METHOD OF PREPARING PARTIALLY HYDROLYZED POLYVINYLACETATE
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
SU795489(A3)
申请公布日期
1981.01.07
申请号
SU19772444852
申请日期
1977.01.28
申请人
BORSHODI VEDI KOMBINAT (FIRMA)
发明人
BELA MARIASHI,HU;LASLO MOLNAR,HU;YANOSH TOT,HU;IMRE GULYA,HU;MIKLOSH NAD,HU;ERVIN VOLFRAM,HU;MIKLOSH TSRINI,HU;GABOR KOVACH,HU;LASLO YAKTSIT,HU