Patent GB-839377-A (GB)
Title: New polymerisation products and their manufacture and use
IPC: C08F8/00
Filed: 1956-08-16
Abstract: In examples, glass plates are coated by applying thereto the following polymeric compositions and then drying; (3) an aqueous solution of a partial hydrazide of polybutyl acrylate; (15) an aqueous dispersion containing a partial hydrazide of polybutyl acrylate, a copolymer of isobutyl acrylate, acrylonitrile and acrylamide and dimethylol urea, the resulting film being heated at 140 DEG  C. to insolubilize it; (16) an aqueous dispersion containing a partial hydrazide of polybutyl acrylate, a copolymer of isobutylacrylate, acrylonitrile, acrylic acid and acrylamide and dimethylol urea; and (18) a solution in a butanol-acetone mixture of methylol-melamine butyl ether and the reaction product of acetone with a partial hydrazide of polybutyl acrylate.ALSO:Fibres and fabrics, e.g. those of cotton, viscose, polyamides, polyesters and polyacrylonitrile, are treated with aqueous dispersions of polymers containing hydrazide groups or derivatives thereof made by reacting hydrazine or its hydrate with a polymer containing carboxylic ester groups (see Group IV (a)).  Polymers specified are those of acrylic and methacrylic esters and copolymers of such esters.  The polymer may be used in conjunction with an agent which, on drying and heating, renders the resultant finish water- and solvent-resistant; alternatively the material which has been treated with the polymer may be further treated with an agent which renders the finish water - and solvent - resistant.  Anti - static finishes may be applied to artificial fibres by using polymers containing quaternary ammonium or amine salt groups.ALSO:Polymers containing hydrazide groups or derivatives thereof are made by reacting hydrazine or its hydrate with a polymer which contains carboxylic acid ester groups as the sole groups capable of reacting with hydrazine, whereby at least a part of the ester groups is replaced by hydrazide groups and the final product contains, besides hydrazide groups, unreacted ester groups or groups incapable of reacting with hydrazine, and, if desired, reacting the hydrazide groups with compounds capable of doing so. Polymers specified are those of acrylic and methacrylic esters, e.g. the methyl, ethyl, propyl, isopropyl, n-butyl, sec.-butyl and isobutyl esters and copolymers of such esters with one or more copolymerizable monomers, such as vinyl formate, acetate, butyrate and benzoate, vinyl fluoride, vinyl and vinylidene chlorides, styrene, isobutylene, butadiene, 2-chlorobutadiene, octadecyl vinyl ether, and vinyl pyrrolidones.  The resulting products may be further reacted in particular with aldehydes and ketones, including polymeric aldehydes and ketones, condensation products of formaldehyde with urea or melamine, di- or poly-isocyanates, acrylamides, triacrylformal, oxalic acid esters, epoxide resins, unsaturated polyester resins, polyacrylic acid, divinyl benzene and copolymers of isobutyl acrylate, acrylonitrile and acrylamide which may also contain acrylic acid.  The products may be used for treating textiles and leather and as additions to melamine-formaldehyde or urea-formaldehyde lacquer resins.