发明名称 |
PARTIELL VERSEIFTE POLYVINYLACETATE, VERFAHREN ZUR HERSTELLUNG DERSELBEN UND IHRE VERWENDUNG |
摘要 |
This invention relates to novel partially saponified polyvinyl acetates with a degree of hydrolysis of 30 to 65 mole % which might be considered as vinyl alcohol-vinyl acetate block copolymers. The invention relates further to the application of said novel block copolymers as a pore-forming additive used together with at least one known protective colloid in the homo- and copolymerization of vinyl compounds, primarily of vinyl chloride in a pure aqueous medium. |
申请公布号 |
DE2702771(A1) |
申请公布日期 |
1977.08.04 |
申请号 |
DE19772702771 |
申请日期 |
1977.01.24 |
申请人 |
BORSODI VEGYI KOMBINAT |
发明人 |
MARIASI,BELA;MOLNAR,LASZLO;TOTH,JANOS;GULYA,IMRE;NAGY,MIKLOS;WOLFRAM,ERWIN;ZRINYI,MIKLOS;KOVACS,GABOR |
分类号 |
C08F8/00;C08F2/20;C08F8/12;C08F8/28;C08F216/06;C08F218/08;(IPC1-7):C08F8/12;C08F2/18 |
主分类号 |
C08F8/00 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|