Thickened Cyanoacrylate Compositions
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Abstract:
The present invention relates to thickened cyanoacrylate compositions, such as those in gel or non-flowable forms. More particularly, the present invention relates to non-flowable cyanoacrylate compositions which can be packaged in a convenient pocket-sized applicator dispenser for use in spreading the cyanoacrylate compositions onto substrates.
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US 20070092481Al
(19) United States
(12) Patent Application Publication (10) Pub. No.: US 2007/0092481 A1
Misiak et al. (43) Pub. Date: Apr. 26, 2007
(54) THICKENED CYANOACRYLATE Publication Classification
COMPOSITIONS
(51) Int. Cl.
(75) Inventors: Hanns R. Misiak, Dublin (IE); Rory A61K 31/785 (2006.01)
B. Barnes, Dublin (IE); Brendan J. C08F 20/00 (2006.01)
Kneafsey, Dublin (IE) (52) U.S. Cl. ....................................... .. 424/78.27; 525/437
Correspondence Address:
LOCTITE CORPORATION
1001 TROUT BROOK CROSSING
ROCKY HILL, CT 06067 (US)
(57) ABSTRACT
The present invention relates to thickened cyanoacrylate
compositions, such as those in gel or non-flowable forms.
(73) Assigneez LOCTITE (R&D) LIMITED More particularly, the presentinvention. relates to non-
flowable cyanoacrylate compositions which can be pack-
(21) App]. No‘; 11/257,049 aged in a convenient pocket-sized applicator dispenser for
use in spreading the cyanoacrylate compositions onto sub-
(22) Filed: Oct. 25, 2005 Strates.
Patent Application Publication Apr. 26, 2007 US 2007/0092481 A1
US 2007/0092481 A1
THICKENED CYANOACRYLATE COMPOSITIONS
BACKGROUND OF THE INVENTION
[0001] 1. Field of the Invention
[0002] This invention relates to thickened cyanoacrylate
compositions.
[0003] 2. Brief Description of Related Technology
[0004] Cyanoacrylate compositions are well known as one
component reactive adhesives, which are quick bonding and
suitable for applications on variety of substrates.
[0005] Because cyanoacrylate compositions are inherently
of a low viscosity, some applications, such as those where a
substrate having large pores is used, are cumbersome. For
that reason, thickened cyanoacrylate compositions were
developed. Reported thickeners include acrylate resins, such
as poly(methyl(meth)acrylate), polymeric alkylcyanoacry-
lates, cellulose esters, such as cellulose acetate and cellulose
butyrate, and polyvinyl ethers, such as polyvinylmethyl
ether. See U.S. Pat. No. 3,742,018.
[0006] However, traditional cyanoacrylate compositions
have been thickened successfully commercially with only a
poly(methylmethacrylate) or poly(vinylacetate), which been
used in higher viscosity versions of cyanoacrylate compo-
sitions, such as those available commercially under the
LOCTITE tradename, bearing for instance the product num-
bers 406, 416, 424 or 431. In addition, in terms of
cyanoacrylate compositions in gel form thixopropic agents
such as fumed silica have been used successfully on a
commercial scale, such as with those products commercially
under the LOCTITE tradename, bearing for instance the
product number 454. See U.S. Pat. Nos. 4,533,422 and Re.
32,889, and 4,837,260. The thixotropic, fumed-silica-con-
taining cyanoacrylate compositions are described as being in
the form of a nonflowable gel which will not substantially
move when placed on a substrate. These cyanoacrylate
compositions may also contain thickeners, such as for the
purpose of preventing the fumed silica from settling in the
composition. Disclosed thickeners include poly(meth)acry-
lates, polycyanoacrylates, and poly(vinyl)acetates.
[0007] It is well known to formulate adhesives in the form
“stick” compositions. The patent literature on adhesives in
“stick” form is extensive and covers a broad range of
adhesive types, describing for instance emulsion adhesives,
solvent based adhesives, and contact adhesives. In addition,
gelling and solidifying additives for the preparation of such
stick adhesives report the use of natural polymers and inert
fillers. An example of one such adhesive stick is sold under
the tradename PRITT STICK by Henkel KGaA. This is an
emulsion-based adhesive.
[0008] A number of patent documents identify adhesive
compositions that have been formulated as soft-solids, and
in some cases sticks. For instance, U.S. Pat. No. 5,433,775
discloses an adhesive stick consisting of a water-based
preparation of starch derivatives and a soap gel as the
shaping gel-forming component. See also U.S. Pat. No.
5,371,131.
[0009] U.S. Pat. No. 3,846,363 relates to an adhesive
crayon composition containing a sorbitol-benzaldehyde
reaction product as an additive. U.S. Pat. No. 4,639,475
discloses an adhesive stick composed of the reaction product
Apr. 26, 2007
of sorbitol and/or xylitol and benzaldehyde as the gel-
forming composition together with an adhesive resin which
is the reaction product of methyl vinyl ether/maleic acid
anhydride copolymers with partially neutralized acid phos-
phate esters of non-ionic wetting agents of the lower alky-
lene oxide adduct type. Room temperature dimensionally
stable cyanoacrylate compositions have also been prepared
with condensation products of aldehydes and ketones with
polyols, such as dibenzylidene sorbital. See International
Patent Publication Nos. WO 00/32709 and WO 01/91915,
and Canadian Patent Application No. CA 2,353,605.
[0010] Japanese Patent Document No. 51-103,939
describes a stick-like epoxy adhesive and a stick-like epoxy
hardening agent which is used therewith. The sticks in JP
’939 patent document seem to be obtained by compounding
a gelling agent and/or water and/or organic solvent with a
liquid or solution type epoxy adhesive and an epoxy hard-
ening agent.
[0011] German Patent Document No. DE 199 57 677 A1
describes a cyanoacrylate adhesive, coating or sealing mate-
rial, which also contains at least one condensation product of
an aldehyde or ketone with a polyol. The adhesive may be
in stick form.
[0012] U.S. Pat. No. 4,497,916 discloses a continuous
liquid phase non-cyanoacrylate adhesive composition to
which is added solid wax-like particles dispersed therein.
These particles may be chosen from polyethylene glycol
materials having 4,000 to 20,000 molecular weight, stearic
acid, acid waxes or stearic esters. The compositions dis-
closed in the ’916 patent are formed by heating this com-
bination of materials in slurry form and applying it, while
heated, to threads. The composition then cools to obtain a
non-mobile coating. This composition requires substantial
preparation in order to obtain the composition and apply it
on parts. U.S. Pat. No. 3,547,851 discloses anaerobic com-
positions, which have been rendered non-flowable through
the inclusion of various waxes.
[0013] U.S. Pat. No. 6,451,927 describes a non-flowable
poly(meth)acrylate adhesive composition having a poly-
meric matrix in sufficient quantity where it is non-flowable
at temperatures up to 180° F. (82° C.) while being dispens-
able at room temperature without the application of heat.
[0014] Recently, Henkel Corporation introduced a line of
adhesive products in the form of a stick. For instance,
LOCTITE QUICK STIK 248, 268, 668, 548, 536 and PST
561 are members of that product line. However, conspicu-
ously absent from this product line is one based on
cyanoacrylates. One reason for this is that cyanoacrylates are
notoriously sensitive to premature polymerization or desta-
bilization, which is because of the cure profile or physical
characteristics of the cyanoacrylate.
[0015] Accordingly, it would be desirable to provide a
thickening agent for use as a constituent in cyanoacrylates
that can be used in a variety of concentrations without
adversely affecting the shelf life of the cyanoacrylate while
having a dramatic impact on the viscosity, permitting the
formulation of cyanoacrylates in a variety of viscosities up
to and including a non-flowable form at room temperature.
SUMMARY OF THE INVENTION
[0016] The present invention is directed to a thickened
cyanoacrylate composition which includes, beyond the
US 2007/0092481 A1
cyanoacrylate component, a polymer component, such as
one constructed from poly(ethylene glycol) and poly(buty-
lene terephthlate) segments. A particularly desirable poly-
mer component for use herein is poly[butyleneterephthalate-
co-poly(ethyleneglycol)terephthalate]. The addition of this
polymer component allows for the formulation of
cyanoacrylate compositions in the form of low viscosity
emulsions, gels and non-flowable forms, depending on the
nature and level of the polymer material used in the com-
position.
[0017] In another aspect, the present invention is directed
to a method of bonding two or more substrates including the
steps of providing at least two substrates; applying, onto at
least a portion of a surface of one or both of the at least two
substrates, a cyanoacrylate composition as noted above;
contacting the surfaces of the at least two substrates having
the cyanoacrylate composition there between; and curing the
cyanoacrylate composition.
[0018] In still another aspect, the present invention is
directed to a bonded assembly including: a first substrate
having a first surface; another substrate having a second
surface; and a cured cyanoacrylate composition disposed
between the first and second surfaces, the composition
having included prior to cure: a cyanoacrylate component
and the polymer component as noted above.
[0019] In yet another aspect, the present invention is
directed to a method of preparing the cyanoacrylate com-
position as noted above.
[0020] In a further aspect, the present invention is directed
to an article of manufacture. In this aspect, there is included
a dispensing container for housing and dispensing a non-
flowable adhesive composition. The container includes a
generally elongate hollow body having first and second
ends, with one of the ends having a dispense opening. The
container houses the room-temperature-flowable polymer-
izable cyanoacrylate composition as noted above.
BRIEF DESCRIPTION OF THE DRAWINGS
[0021] FIG. 1 is a perspective view of a lipstick-type
dispenser container with a dispenser cap.
[0022] FIG. 2 is a perspective view of a lipstick-type
dispenser container showing a non-flowable cyanoacrylate
composition contained therein.
DETAILED DESCRIPTION OF THE
INVENTION
[0023] The present invention is directed to a thickened
cyanoacrylate composition, which includes, beyond the
cyanoacrylate component, a polymer material.
[0024] The cyanoacrylate component includes at least one
ot-cyanoacrylate monomer of the formula:
H2C=C—COOR1
CN
where R1 represents a straight chain or branched chain alkyl
group having 1 to 12 carbon atoms (which may be substi-
tuted with a substituent such as a halogen atom or an alkoxy
Apr. 26, 2007
group), a straight chain or branched chain alkenyl group
having 2 to 12 carbon atoms, a straight chain or branched
chain alkynyl group having 2 to 12 carbon atoms, a
cycloalkyl group, an aralkyl group or any aryl group.
Specific examples of R1 are a methyl group, an ethyl group,
an n-propyl group, an isopropyl group, an n-butyl group, an
isobutyl group, a pentyl group, a hexyl group, an allyl group,
a methallyl group, a crotyl group, a propargyl group, a
cyclohexyl group, a benzyl group, a phenyl group, a cresyl
group, a 2-choroethyl group, a 3-choropropyl group, a
2-chorobutyl group, a trifluoroethyl group, a 2-methoxy-
ethyl group, a 3-methoxybutyl group and a 2-ethoxyethyl
group. Ethyl cyanoacrylate is a particularly desirable choice
for use in the inventive compositions.
[0025] A single ot-cyanoacrylate monomer or a mixture of
two or more of these ot-cyanoacrylate monomers can be
used. Generally, the above ot-cyanoacrylate monomer used
alone as an adhesive, and one or more components such as
those set forth below, are used to formulate a commercial
composition. The additional components includes, but are
not limited to, accelerators; anionic polymerization inhibi-
tors; radical polymerization inhibitors; additives, such as
plasticizers, heat stabilizers and toughening agents; and/or
perfumes, dyes, and pigments.
[0026] A suitable amount of ot-cyanoacrylate monomer
present in the inventive compositions is from about 50 to
99.5% by weight, such as 60 to 90% by weight, desirable
75% by weight, based on the total weight of the composi-
tion.
[0027] The polymer material may be one constructed from
poly(ethylene glycol) and poly(butylene terephthlate) sec-
tions. For instance, one commercially available example of
such a material is sold by Octoplus, Netherlands under the
tradename PolyActive. PolyActive-brand products are
described as biodegradable polymer-based drug delivery
systems. PolyActive-brand products represent a series of
poly(ether ester) and multiblock copolymers based on poly-
(ethylene glycol), PEG, and poly(butylene terephthalate),
PBT. The amount and length of each of the two building
blocks is reported to create a diverse family of polymers
with physical properties such as rate of controlled release,
degradation, swelling and strength that can be precisely
controlled by the approprite combination of the two copoly-
mer segments. The disclosure of PolyActive-brand products
may be shown as
(o—cH2—cH2),—o—c c
II II
X
O O
(o—(cH2)4—o—c c
II II
Y
O O
[0028] OctoPlus has reported that due to the presence of
hydrophilic poly(ethylene glycol) segments, PolyActive-
brand products exhibit a hydrogel character.
US 2007/0092481 A1
[0029] The polymer material should be used in the present
invention in amounts of about 0.5% to about 30%, for
instance about 2.5% to about 20%, such as about 5% to
about 15%, by weight based on the total weight of the
composition. When present in these amounts, the increased
viscosity, gel and non-flowability characteristics of a com-
position can be obtained. Additionally, these materials can
be added directly in solid form, such as in powder or
particulate form, without pre-melting or even heating of the
polymeric matetial.
[0030] An anionic polymerization inhibitor is generally
added to ot-cyanoacrylate compositions in an amount from
about 0.0001 to 10% by weight based on the total weight of
the composition, to increase the stability of the composition
during storage. Examples of useful inhibitors include sulfur
dioxide, sulfur trioxide, nitric oxide, hydrogen fluoride,
organic sultone inhibitors, boron trifluoride and methane
sulfonic acid, aromatic sulfonic acids, aliphatic sulfonic
acids, and sulfones. The amount of inhibitor will suitably be
any convenient amount in order to slow down cure of the
composition. Desirably, inhibitors of anionic polymerization
are present at about 0.0001% to about 0.1% by weight based
on the total weight of the composition.
[0031] A radical polymerization inhibitor is generally
added to ot-cyanoacrylate compositions as well, in an
amount from about 0.001 to 2.0%, particularly 0.03 to 0.5%,
based on the total weight of the composition, for the purpose
of capturing radicals which are formed by light during
storage. Such inhibitors are ordinarily of the phenolic type
include, for example, hydroquinone and hydroquinone
monomethyl ether. Other inhibitors suitable for use herein
include butylated hydroxytoluene and butylated hydroxya-
nisole.
[0032] A thickener may be added to increase the viscosity
of the ot-cyanoacrylate composition; however, with the
recited polymeric material, it may not be as desirable.
Nevertheless, various polymers can be used as thickeners,
and examples include poly(methyl methacrylate), methacry-
late-type copolymers, acrylic rubbers, cellulose derivatives,
polyvinyl acetate and poly(0t-cyanoacrylate). A suitable
amount of thickener is generally about 0.01 to 30% by
weight, preferably 5.0 to 25% by weight based on the total
weight of the cyanoacrylate adhesive composition.
[0033] Phthalic ar1hydride and other plasticizers may also
be added to the cyanoacrylate component to further aid in
durability and impact, heat, and moisture resistance. The
plasticizer is preferably present in an amount of about
0.005% to about 5.0%, more preferably about 0.01% to
about 2.0% by weight based on the total weight of the
composition.
[0034] Perfumes, dyes, pigments, and the like may be
added to the inventive composition depending on use pur-
poses in amounts which do not adversely affect the stability
of the ot-cyanoacrylate monomer. The use of such additives
is within the skill of those practicing in the cyanoacrylate
adhesive art and need not be detailed herein.
[0035] Accelerators that may be useful in the cyanoacry-
late compositions include for example calixarenes, oxacalix-
arenes, and combinations thereof. Of the calixarenes and
oxacalixarenes, many are known, and are reported in the
patent literature. See e.g. U.S. Pat. Nos. 4,556,700, 4,622,
Apr. 26, 2007
414, 4,636,539, 4,695,615, 4,718,966, and 4,855,461, the
disclosures of each of which are hereby expressly incorpo-
rated herein by reference.
[0036] Another potentially useful accelerator component
is a crown ether. A host of crown ethers are known. For
instance, examples which may be used herein either indi-
vidually or in combination, or in combination with the
calixarenes and oxacalixarenes described above include
15-crown-5,18-crown-6, dibenzo-18-crown-6, benzo-15-
crown-5, dibenzo-24-crown-8, dibenzo-30-crown-10,
tribenzo-18-crown-6, asym-dibenzo-22-crown-6, dibenzo-
14-crown-4, dicyclohexyl-18-crown-6, dicyclohexyl-24-
crown-8, cyclohexyl-12-crown-4,1,2-decalyl-15-crown-5,1,
2-naphtho-15 -crown-5 ,3 ,4,5 -naphthyl-16-crown-5,1,2-
methyl-benzo-1 8-crown-6, 1 ,2-methylbenzo-5 ,6-
methylbenzo-18-crown-6,1,2-t-butyl-18-crown-6,1,2-
vinylbenzo-15 -crown-5,1,2-vinylbenzo-18-crown-6,1,2-t-
butyl-cyclohexyl-18-crown-6, asym-dibenzo-22-crown-6
and 1,2-benzo-1,4-benzo-5-oxygen-20-crown-7. See U.S.
Pat. No. 4,837,260 (Sato), the disclosure of which is hereby
expressly incorporated here by reference.
[0037] Other suitable accelerators include those described
in U.S. Pat. No. 5,312,864 (Wenz), which are hydroxyl
group derivatives of an (X-, [3- or y-cyclodextrin which is at
least partly soluble in the cyanoacrylate; in U.S. Pat. No.
4,906,317 (Liu), which are silacrown compounds to accel-
erate fixturing and cure on de-activating substrates such as
wood, examples of which are within the following structure:
I|{4
R3—Si 01
|— (OCH2CH),,
R5
where R3 and R4 are organo groups which do not themselves
cause polymerization of the cyanoacrylate monomer, R3 is H
or CH3 and n is an integer of between 1 and 4. Examples of
suitable R3 and R4 groups are R groups, alkoxy groups such
as methoxy, and aryloxy groups such as phenoxy. The R3
and R4 groups may contain halogen or other substituents, an
example being trifluoropropyl. However, groups not suitable
as R4 and R3 groups are basic groups such as amino,
substituted amino and alkylamino.
[0038] Specific examples of silacrown compounds useful
in the inventive compositions include:
H3C CH3
\ /
Si
O
dimethylsila-1 1-crown-4;
/\
O]
O O
\_/
US 2007/0092481 A1
.605.
E]
o 0
V
/ \
CH3
dimethylsila-14-crown-5; and
H3C CH3
\_/
C“)
LU)
dimethylsila-17-crown-6.
[0039] The accelerator component should be included in
the compositions in an amount within the range of from
about 0.1% to about 10%, with the range of about 0.5% to
about 5% being desirable, and about 0.1% to about 1% by
weight based on the total weight of the composition being
particularly desirable. See e.g. U.S. Pat. Nos. 4,170,585;
4,450,265; 6,294,629; and 6,475,331, the contents of which
are all incorporated herein by reference.
[0040] Preparation of the compositions and products of the
present invention can be achieved by mixing the polymer
material into the cyanoacrylate composition at elevated
temperature. Desirably, these constituents are mixed at about
1000 rpm under elevated temperature conditions, for
example, 80° C. to 140° C. The polymer material may then
be added, while maintaining the temperature at about 80° C.
to 140° C. Or, the polymer material may be preheated to the
above-described temperatures before its addition. The actual
temperature used may vary depending upon the melting
point or the solubility in a cyanoacrylate of the polymer
material. The so-formed composition may then be dispensed
into a dispensing container, such as a lipstick-type dispenser,
while hot. The dispensers are then allowed to cool to create
the composition of the present invention.
[0041] Mixing is performed for a time sufficient to dis-
perse or dissolve the polymer material into the cyanoacrylate
composition, which can vary depending on the batch size.
Generally, only seconds or minutes are required to achieve
the desired blending in of the polymer material. The com-
position will thus become thickened upon returning to room
temperature.
[0042] Reference to FIGS. 1-2 shows the dispenser to be
typically in a generally elongate shape and designed to
Apr. 26, 2007
mechanically advance the composition through a dispense
opening. The dispense opening can be defined as the entire
perimeter of the container wall or it can be smaller apertures
such as slots or holes located on the end surface of the
container. Altematively, the dispense opening can extend
away from the container wall, narrowing or telescoping as it
so extends to form a dispense opening with an intemal
diameter less then that of the container wall itself. It may be
desirable to have the narrowed dispense end include at the
distal end thereof a flow through applicator or brush for
more precise application. A portion of the dispense end of
the container can be concave to accommodate a threaded
member or tubular body which requires application of the
composition. And since the cyanoacrylate adhesive compo-
sition is in a non-flowable form, the mechanic or mainte-
nance worker can readily carry it without fear of spillage.
[0043] The container is generally fitted with a cap, which
fits over and around the container walls.
[0044] At the container end opposite the dispense opening,
i.e., the bottom end of the container is proximally located a
mechanism for mechanically advancing the adhesive. These
mechanisms are generally well known in the art and include
a pusher means which can include a knob located at the
bottom of the container which when tumed in one direction
advances the composition contained therein to the dispense
opening and when turned in the other direction moves the
composition in the opposite direction. This mechanism for
mechanically advancing the cyanoacrylate adhesive compo-
sition creates a friction on the non-flowable cyanoacrylate
compositions, which friction renders the composition free
flowable while it is applied.
[0045] More specifically, reference to FIGS. 1-2 depicts an
article of manufacture in more particular detail. FIG. 1
shows container 10 having a generally elongate tubular
shape defined by wall 20 and having a dispense end defined
by perimeter 21. Cap 50 as shown is designed for closingly
engaging tubular wall 20 by fitting thereover. Desirably, cap
50 engages the tubular wall 20 to provide a barrier against
ambient humidity to prevent premature curing of the
cyanoacrylate adhesive composition disposed within con-
tainer 10. Composition 30 is shown in FIG. 1 within
container 10. FIG. 2 shows composition 30 being advanced
above perimeter 21 using knurled knob 40 which was tumed
to mechanically advance the composition within container
10. In one embodiment, knob 40 may be turned in the
opposition direction to cause composition 30 to descend
back within container 10.
[0046] The container 10 (or for that matter alternative
designs thereof) may be constructed from a material to
which cyanoacrylate materials do not stick, like poyolefins,
e.g., polyethylene, polypropylene, or polymethylpentene.
Desirably, materials that have a low penetrability to gases
and moisture should be used, in order to ensure good shelf
life of the cyanoacrylate. Thus, high density polyethylene
(HDPE), or co-extruded multi layer materials (e.g., inner
layer polyethylene, outer layer a gas barrier plastic) may be
used, examples of such gas barrier plastics include polyvi-
nylidenechloride, co-polymers of vinylidenechloride, poly-
carbonate, co-polymers of vinylacohol and ethyleneglycol).
In addition, metal containers with laquered inner surfaces
may be used.
[0047] The cyanoacrylate compositions of the present
invention are useful in bonding two or more substrates. A
US 2007/0092481 A1
sufficient portion of the composition may be placed on a
surface of one of the two or more substrates. The other
substrate is then positioned adjacent to the cyanoacrylate
composition and the two substrates are placed in contact to
form an assembly, upon curing of the cyanoacrylate.
[0048] The following non-limiting examples are intended
to further illustrate the present invention.
EXAMPLES
[0049] Cyanoacrylate compositions labeled Sample Nos.
1-6 were prepared by incorporating the amount indicated in
Table 1 of poly[butyleneterephthalate-co-poly(alkylenegly-
col)terephthalate], available commercially from Aldrich
Chemical Co., and mixing for about 10 minutes at about
120° C., until the polymer material dissolved in the
cyanoacrylate composition.
TABLE 1
Sample No./Amt. wt %
Component 1 2 3 4 5 6
Ethyl cyanoacrylate monomer Bal. Bal. Bal. Bal. Bal. —
n-Butyl cyanoacrylate — — — — — Bal.
monomer
Polymer Material 1 2.5 5 10 15 10
[0050] Table 2 shows the visual observation of gel forrna-
tion and aspect of Sample Nos. 1-6.
TABLE 2
Sample No. Gel Formation Aspect
1 No semitransparent emulsion
2 Yes semitransparent
3 Yes opaque
4 Yes opaque
5 Yes opaque
6 Yes colorless
[0051] An inventive composition in stick form was pre-
pared from 6.25% by weight polymer material in ethyl
cyanoacrylate. Once mixed, the composition was cast into
an empty container, and after returning to room temperature,
the composition solidified into what appeared to be a non-
flowable mass.
[0052] The so-formed composition in non-flowable form
was used by application first onto paper in the same way as
a conventional PRITT STICK-brand adhesive stick would.
Within 10 seconds, a resulting fixture formed. The so-
formed composition was also used on black acrylonitrile-
butadiene-styrene-terpolymer plastic, and resulted in a fix-
ture time of 8 seconds.
What is claimed is:
1. A cyanoacrylate composition comprising:
a. at least one ot-cyanoacrylate compound; and
b. a polymer material constructed from poly(ethylene
glycol) and poly(butylene terephthalate) sections.
2. The composition of claim 1, wherein said polymer
material is present in an amount sufficient to thicken said
composition.
Apr. 26, 2007
3. The composition of claim 1, wherein said polymer
material is present in an amount sufficient to render said
composition in gel form.
4. The composition of claim 1, wherein said polymer
material is present in an amount sufficient to render said
composition non-flowable at room temperature.
5. The composition of claim 4, wherein said composition
is dispensable at room temperature without application of
heat.
6. The composition of claim 1, wherein the 0t-cyanoacry-
late is represented by compounds of the formula:
H2C=C—COOR1
CN
wherein R1 represents a straight chain or branched chain
substituted or unsubstituted alkyl group having 1 to 12
carbon atoms, a straight chain or branched chain substituted
or unsubstituted alkenyl group having 2 to 12 carbon atoms,
a straight chain or branched chain substituted or unsubsti-
tuted alkynyl group having 2 to 12 carbon atoms, a substi-
tuted or unsubstituted cycloalkyl group, an substituted or
unsubstituted aralkyl group or a substituted or unsubstituted
aryl group.
7. The composition of claim 6, wherein R1 is selected
from the group consisting of a methyl group, an ethyl group,
an n-propyl group, an isopropyl group, an n-butyl group, an
isobutyl group, a pentyl group, a hexyl group, an allyl group,
a methallyl group, a crotyl group, a propargyl group, a
cyclohexyl group, a benzyl group, a phenyl group, a cresyl
group, a 2-choroethyl group, a 3-choropropyl group, a
2-chorobutyl group, a trifluoroethyl group, a 2-methoxy-
ethyl group, a 3-methoxybutyl group, a 2-ethoxyethyl group
and combinations thereof.
8. The composition of claim 1, wherein said 0t-cyanoacry-
late is an ethyl cyanoacrylate monomer.
9. The composition of claim 1, wherein said 0t-cyanoacry-
late compound is present up to about 98% by weight of the
total composition.
10. The composition of claim 1, wherein the polymer
material is present in amounts of about 0.5% to about 30%
by weight of the composition.
11. The composition of claim 1, wherein the polymer
material is poly[butyleneterephthalate-co-poly(alkylenegly-
col)terephthalate].
12. An article of manufacture comprising:
a. a dispensing container for housing and dispensing a
non-flowable adhesive composition, said container
comprising a generally elongate hollow body having
first and second ends, with one of said ends defining a
dispense opening; and
b. a cyanoacrylate composition within said container, said
composition comprising:
(i) at least one cyanoacrylate monomer; and
(ii) a polymer material constructed from poly(ethylene
glycol) and poly(butylene terephthlate) sections.
Coments go here:
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