Patent

This invention is directed to a fast curing polymer composition which does not require baking or thermosetting to provide a cross-linked coating binder. The composition comprises a polymer which is a homopolymer or copolymer of alpha, beta unsaturated monomers having pendent acetylenic groups which cross-link upon air drying to provide a coating binder.

Phenolic materials containing propargyl groups are prepared by reacting a polyhydric, phenolic material with propargyl bromide, the reaction being conducted in an aqueous sodium hydroxide solution. The products can be thermally polymerized to polymers which are useful as adhesives and as matrix resins in the fabrication of composites

Crosslinked polymers which are produced from monomers containing glycerol carbonate groups, crosslinking monomers and, where appropriate, other monoethylenically unsaturated monomers are composed of principally spherical porous particles and are very suitable as carrier materials for the immobilization of biologically active substances.

The invention relates to a method for producing glycerol carbonate methacrylate in the presence of metal-chelate catalysts of the metal ion-1,3-diketonate type.

The invention relates to new industrial products of the general formula ##STR1## a process for the manufacture of these products and their application in hydrometallurgy.

2-Cyanoacrylate represented by the formula: ##STR1## wherein R.sup.1 is a 1,2-alkylene group having 2-4 carbon atoms; R.sup.2 is an alkylene group having 2-4 carbon atoms and R.sup.3 is an alkyl group having 1-6 carbon atoms, said 2-cyanoarylates can be anion-polymerized with a slight quantity of water similarly to hitherto known 2-cyanoacrylates, and the resulting cured product is richer in flexibility than the hitherto known ones.

A novel neopentyl alpha-cyanoacrylate is provided. It has superior adhesive properties even at high temperatures and whitening-preventing property.

A novel neopentyl alpha -cyanoacrylate is provided. It has superior adhesive properties even at high temperatures and whitening-preventing property.