发明名称 METHOD OF PREPARING SPARSELY CROSS-LINKED ACRYLIC ACID COPOLYMERS
摘要 FIELD: organic chemistry, more particularly stabilization of natural and synthetic latexes, preparation of cosmetics and pharmaceuticals, surgical gels, and cintments. SUBSTANCE: method comprises polymerizing acrylic acid in solvent in the presence of cross-linking agent and initiator. Cross-linking agent is polybutadiene in amount of 1-3% based on acrylic acid weight and in the presence of modifying perfluoroacid additive of general formula: <EMI ID=0.438 HE=12 WI=42 TI=CHI> wherein n is 7-32 in amount of 0.1-0.5% based on acrylic acid weight. Method makes it possible to remove technological difficulties of polymerization process, e.g. adhesion of product onto apparatus walls, caking, formation of aggregates which result in longer drying time and deteriorated quality of the desired product. EFFECT: improved properties of the resulting copolymer. 1 tbl
申请公布号 RU2131891(C1) 申请公布日期 1999.06.20
申请号 RU19970121570 申请日期 1997.12.25
申请人 " 发明人 ALEKSEEV K.V.
分类号 C08F220/06;C08F2/44;C08F236/06;C08L101/14;(IPC1-7):C08F220/06 主分类号 C08F220/06
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