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1. 发明授权

US3661867A Method for producing chloride by suspension polymerization 失效
标题翻译：通过悬浮聚合制备氯化物的方法
公开(公告)号：US3661867A
公开(公告)日：1972-05-09
申请号：US3661867D
申请日：1970-12-10
申请人： SHINETSU CHEMICAL CO
发明人： KOYANAGI SHUNICHI , KITAMURA HAJIME , OGAWA KINYA , TAJIMA SHIGENOBU
IPC分类号： C08F14/00 , C08F2/00 , C08F2/18 , C08F4/00 , C08F4/28 , C08F14/06 , C08F1/11 , C08F3/30
CPC分类号： C08F14/06 , Y10S526/909 , C08F2/18
摘要： A DIALKYL PEROXYDICARBONATE WHOSE ALKYL RADICAL HAS 1-8 CARBON ATOMS, AN ACETYL CYCLOHEXYL SULFONYL PEROXIDE OR A MIXTURE THEREOF IS ADDED TO VINYL CHLORIDE OR A MIXTURE OF VINYL MONOMERS HAVING VINYL CHLORIDE AS ITS MAIN COMPONENT, 0.001-0.5% BY WEIGHT, BASED ON THE WEIGHT OF THE MONOMERS(S), OF THE DIALKYL PEROXYDICARBONATE, ACETYLCYCLOHEXYL SULFONYL PEROXIDE OR MIXTURE THEREOF IS ADDED. THE RESULTANT MIXTURE IS MAINTAINED AT A TEMPERATURE NOT EXCEEDING 35*C. FOR 0.5 TO 2 HOURS. THE PH IS ADJUSTED TO 8-11. THE RESULTANT MIXTURE IS HEATED AT 4070*C. IN THE PRESENCE OF A POLYMERIZATION INITIATOR TO SUBSTANIALLY COMPLETE THE POLYMERIZATION. THE INITIATOR IS SELECTED FROM THE GROUP CONSISTING OF AZOBIS-2,4-DIMETHYLVALERONITRILE, AZOBISMETHOXYVALERONITRILE, AZOBISTRIMETHYLVALERONITRILE, TER-BUTYLPEROXYPIVALATE AND MIXTURES THEREOF. THE METHOD SUBSTANTIALLY PREVENTS POLYMER SCALE DEPOSITION ON THE INTERIOR WALLS OF THE POLYMERIZATION VESSEL. THE POLYMERIZATION INDUCTION PERIOD IS ELIMINATED. THE POLYVINYL CHLORIDE PRODUCED HAS LITTLE COLOR AND HAS SUPERIOR THERMAL STABILITY.

2. 发明授权

US3706705A Method for suspension-polymerizing vinyl chloride 失效
标题翻译：悬浮聚合氯乙烯的方法
公开(公告)号：US3706705A
公开(公告)日：1972-12-19
申请号：US3706705D
申请日：1971-08-26
申请人： SHINETSU CHEMICAL CO
发明人： KOYANAGI SHUNICHI , KITAMURA HAJIME , SHIMIZU TOSHIHIDE
IPC分类号： C08F14/06 , C08F1/11 , C08F3/30
CPC分类号： C08F14/06 , C08F2/18
摘要： Vinyl chloride or a mixture of vinyl monomers containing vinyl chloride as its main component, and an aqueous medium containing a protective colloidal substance and an anionic surface active agent are subjected to an initial stirring, in the presence of an oil-soluble catalyst. Before the rate degree of conversion reaches 30 percent, an inorganic polyvalent metal salt and/or an amine hydrochloride is added to the polymerization system. The anionic surface active agent is thereby rendered water-insoluble. The polymerization is then completed. A polymer having uniform particle size distribution, superior porosity and a high rate of plasticizer absorption is produced.
摘要翻译：在油溶性催化剂的存在下，将氯乙烯或含有氯乙烯作为主要成分的乙烯基单体的混合物和含有保护性胶态物质和阴离子表面活性剂的水性介质进行初始搅拌。在转化率达到30％之前，向聚合体系中加入无机多价金属盐和/或胺盐酸盐。阴离子表面活性剂由此变得不溶于水。然后完成聚合。产生具有均匀的粒度分布，优异的孔隙率和高增塑剂吸收率的聚合物。

3. 发明授权

US3671508A Method for preparing polyvinyl chloride 失效
标题翻译：制备聚氯乙烯的方法
公开(公告)号：US3671508A
公开(公告)日：1972-06-20
申请号：US3671508D
申请日：1971-03-01
申请人： SHINETSU CHEMICAL CO
发明人： KOYANAGI SHUNICHI , KITAMURA HAJIME , TAJIMA SHIGENOBU
IPC分类号： C08F14/00 , C08F2/00 , C08F2/18 , C08F4/00 , C08F4/04 , C08F4/40 , C08F14/06 , C08F1/11 , C08F3/30 , C08F15/02
CPC分类号： C08F14/06 , Y10S526/909 , C08F2/18
摘要： Vinyl chloride is suspension polymerized in the presence of a catalyst selected from the group consisting of dialkyl peroxy dicarbonate, azo-bis-2,4-dimethyl valeronitrile, azo-bis-2,4,4trimethyl valero nitrile, azo-bis-4-methoxy-2,4-dimethyl valeronitrile, and acetyl cyclohexyl sulfonyl peroxide, a suspending agent, a fatty alcohol having from eight to 18 carbon atoms and sorbitan oleate. When the rate of conversion reaches at least 50 percent, an organic reducing agent is added to the polymerization system. A polyvinyl chloride having superior particle size distribution, plasticizer absorption, fish eye, initial color and thermal stability is produced.
摘要翻译：氯化烯在选自二烷基过氧化二碳酸酯，偶氮双-2,4-二甲基戊腈，偶氮双-2,4,4-三甲基戊腈，偶氮双 - 4-甲氧基-2,4-二甲基戊腈和乙酰基环己基磺酰基过氧化物，悬浮剂，具有8至18个碳原子的脂肪醇和脱水山梨醇油酸酯。当转化率达到至少50％时，向聚合体系中加入有机还原剂。产生具有优异的粒度分布，增塑剂吸收，鱼眼，初始颜色和热稳定性的聚氯乙烯。

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