| 摘要 |
PCT No. PCT/GB83/00211 Sec. 371 Date Apr. 26, 1984 Sec. 102(e) Date Apr. 26, 1984 PCT Filed Aug. 26, 1983 PCT Pub. No. W084/00973 PCT Pub. Date Mar. 15, 1984.The invention is a rust proofing composition containing a copolymer in latex form derived from: (i) vinylidene chloride (ii) vinyl chloride; and (iii) one or more alkyl acrylates and/or alkyl metharcylates having from 1 to 12 carbon atoms is the alkyl group; and a chelating agent comprising pyrogallol, said pyrogallol being present in an amount between 0.5 and 5.0 percent by weight of said aqueous emulsion. |
