| 摘要 |
<p>1,229,510. Coating. DOW CHEMICAL CO. 26 June, 1969 [8 Nov., 1968], No. 32236/ 69. Heading B2E. [Also in Division C3] A latex for coating contains a terpolymer obtained by the continuous addition polymerisation in aqueous dispersion of (1) 66.5-95% (based on total monomers) of a hydrophobic, ethylenically unsaturated monomer, (2) 0.5- 30% (based on (1) and (2) only) of a more hydrophilic monomer having a solubility in both water and oil phases of at least 1% at polymerisation temperature and (3) 0.1-5% (based on total monomers) of a monomer RZQSO 3 -M+ in which R is vinyl or alphasubstituted vinyl, Z is a group which activates the double bond, Q is a divalent hydrocarbon radical having its bonds on different carbons and M is hydrogen, alkali metal, ammonium, amine, sulphonium or quaternary ammonium. In the examples (1) is vinylidene chloride, optionally with ethyl or butyl acrylate, (2) is methacrylic acid, acrylonitrile or methyl methacrylate and (3) is sodium sulphoethyl methacrylate. The latices are used to coat films of or woven or non-woven sheets of polymers or cellulose products wood products or metals, e.g. paper, polypropylene film polyethylene terephthalate, PVC, nylon, cellulose nitrate or aluminium foil.</p> |
