| 摘要 |
PCT No. PCT/IE96/00060 Sec. 371 Date Mar. 6, 1998 Sec. 102(e) Date Mar. 6, 1998 PCT Filed Sep. 6, 1996 PCT Pub. No. WO97/09379 PCT Pub. Date Mar. 13, 1997A process of preparing biodegradable plastics material comprising 1) mixing a stabilizer such as an amide or metal salt with a partially hydrolyzed, water-soluble polyvinyl alcohol (PVA) copolymer, 2) adding a plasticizer to the mixture, 3) mixing said materials in the temperature range of between 106 and 140 C. and 4) compounding the blend by known processes. |
