Patent GB-1174159-A (GB)
Title: Caulking and sealing compounds
IPC: C09J123/22
Filed: 1967-03-31
Abstract: 1,174,159. Polymer composition. BADISCHE ANILIN- & SODA-FABRIK A.G. 31 March, 1967 [2 April, 1966], No. 14720/67. Heading C3P. A caulking and sealing compound contains (a) 1 part by weight of an emulsion polymer A of an ester of an ethylenically unsaturated carboxylic acid having 3 to 5 carbon atoms and a monohydric aliphatic alcohol having 1 to 12 carbon atoms, said polymer being in the form of an at least 50% aqueous dispersion, (b) 0À25 to 2À5 parts of a practically anhydrous and solvent free emulsifiable polymer B which (b<SP>1</SP>) has a K value of 10 to 70 and is a polymer of an ester of acrylic and/or methacrylic acid and a monohydric alphatic alcohol having 2 to 8 carbon atoms and/or of a vinyl alkyl ether having 1 to 4 carbon atoms in the alkyl radical and/or of butadiene or (b<SP>2</SP>) has a K value of 5 to 40 and is a polymer of isobutylene and/or isoprene, (c) 0À5 to 2À5 times the weight of the polymers of conventional inorganic fillers and (d) 8 to 18% by weight of the composition of water. The composition may also contain an emulsifier, a protective colloid and 0À5 to 10% by weight of A and B of a urea-formaldehyde resin, which is preferably modified with a bisulphite. Suitable polymers A include copolymers of (i) nbutyl acrylate and acrylonitrile or methyl acrylate, (ii) decyl acrylate, methyl methacrylate and acrylic acid, (iii) 2-ethylhexyl acrylate, styrene and acrylic acid, (iv) 2-ethylhexyl acrylate and vinyl chloride, (v) 2-ethylhexyl acrylate, acrylonitrile, and/or methacrylonitrile, and acrylic acid and/or methacrylic acid and (vi) n-butyl acrylate, methyl acrylate and acrylic acid. Polymer B is, e.g. a copolymer of one of the specified esters with acrylonitrile and/or methacrylonitrile and/or acrylic or methacrylic acid, polyvinyl isobutyl ether, polyvinyl methyl ether, an oily butadiene homopolymer or copolymer with styrene and/or alpha-methyl styrene and/or isobutylene, polyisobutylene or an isobutylene-styrene copolymer. In Examples 1 to 10 polymer A is a 2- ethylhexylacrylate/acrylonitrile/acrylic acid terpolymer, which is compounded with (1) to (3) polyisobutylene or poly-(n-butyl acrylate), a sperm oil fatty alcohol-ethylene oxide condensate, asbestos and chalk; (4) polyisobutylene, the said condensate, quartz, talc and carbon black; (5) and (6) poly-(vinyl isobutyl ether) and (5) an isooctyl phenol-ethylene oxide condensate, chalk and quartz or (6) ethylene glycol, quartz, chalk, carbon black, talc and heavy spar; (7) and (8) a polybutadiene oil modified with maleic anhydride, the said sperm oil condensate, a lead drier and quartz; (9) and (10) a polybutadiene oil isomerized in the presence of iron carbonyl, the sperm oil condensate and (9) chalk and quartz or (10) chalk alone. The compositions in the other examples comprise (11) A-a vinyl propionate t.-butyl acrylate/ acrylamide copolymer and B-a copolymer of n-butyl acrylate and vinyl isobutyl ether; (12) A-an n-butyl acrylate/styrene/acrylic acid copolymer and B-a 2-ethylhexyl acrylate/ acrylonitrile/butanediol monoacrylate copolymer; (13) A-an ethyl acrylate/acrylic acid copolymer and B-poly-(n-butyl acrylate); (14) A-an n-butyl acrylate/acrylonitrile/butanediol monoacrylate / N - methylol methacrylamide/ acrylic acid copolymer and B-poly-(vinyl iso. butyl ether); (15) A-an n-butyl acrylate/ methyl acrylate/acrylic acid copolymer and B-poly-(n-butyl acrylate) and (16)A-an nbutyl acrylate/vinylidene chloride/acrylic acid copolymer and B-poly-(vinyl isobutyl ether). The other ingredients of Examples 11 to 16 are one of the aforesaid ethylene oxide condensates, chalk, and in some cases, quartz.