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1.发明授权Process for producing polyvinyl chloride in the presence of alkyl thioglycolate as a chain transfer agent 失效在作为链转移剂的烷基酚酯存在下生产聚氯乙烯的方法
公开(公告)号：US3846390A
公开(公告)日：1974-11-05
申请号：US23750272
申请日：1972-03-23
申请人： SUMITOMO CHEMICAL CO
摘要： When vinyl chloride or a monomeric mixture of vinyl chloride and an other ethylenically unsaturated monomer copolymerizable therewith is subjected to polymerization in the presence of a alkyl thioglycolate, vinyl chloride polymers with properly low average degree of polymerization suitable with a processing can be obtained.
摘要翻译： 当氯乙烯或与其可共聚的其它烯属不饱和单体的单体混合物在巯基乙酸烷基酯存在下进行聚合时，可以获得具有合适的低平均聚合度的适合于加工的氯乙烯聚合物。
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公开(公告)号：US3813373A
公开(公告)日：1974-05-28
申请号：US29840472
申请日：1972-10-17
申请人： SUMITOMO CHEMICAL CO
发明人： ITO I , SEKIHARA T , EMURA T
IPC分类号： C08F114/06 , C08F1/11 , C08F3/30
CPC分类号： C08F114/06 , Y10S526/91
摘要： METHOD FOR PRODUCING POLYVINYL CHLORIDE HAING A HIGH BULK DENSITY OF MORE THAN 0.6 G./CC., SUPERIOR FREE FLOW PROPERTY AND SUPERIOR PROCESSABILITY BY SUSPENSION POLYMERIZATION OF VINYL CHLORIDE MONOMER IN AN AQUEOUS MEDIUM IN THE PRESENCE OF A SPECIFIC WATER-SOLUBLE CELLULOSE DERIVATIVE AND A SPECIFIC ALKALI METAL SALT OF AN INORGANIC OR ORGANIC ACID BY USING AN AGITATOR HAING AN AGITATING BLADE IN WHICH THE RATIO (D/D) OF SPAN (D) OF THE AGITATING BLADE TO THE INSIDE DIAMETER (D) OF THE POLYMERIZATION VESSEL IS 0.3 TO 0.8 AND FURTHER THE TIP SPEED OF THE AGITATING BLADE IS NOT MORE THAN 7 M./SEC.
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公开(公告)号：US3812073A
公开(公告)日：1974-05-21
申请号：US33366173
申请日：1973-02-20
申请人： SUMITOMO CHEMICAL CO
发明人： ITO I , UEDA T , SEKIHARA T , EMURA T
摘要： WHEREIN R IS A SATURATED OR UNSATURATED HYDROCARBON RESIDUE HAVING 13 TO 19 CARBON ATOMS, OR 1 TO 5% BY WEIGHT OF THE SAID MONOGLYCERIDE AND 0.01 TO 5% BY WEIGHT OF A PLASTICIZER, BASED ON THE SAID MONOMER OR THE MIXTURE THEREOF. THE VINYL CHLORIDE RESIN THUS OBTAINED IS EXCELLENT IN PROCESSABILITY AND THERMAL STABILITY.
HO-CH2-CH(-OH)-CH2-OOC-R
AN ANTISATIC VINYL CHLORIDE RESIN IS PRODUCED BY SUBJECTING VINYL CHLORIDE, OR A MIXTURE THEREOF WITH A MINOR AMOUNT OF ETHYLENICALLY UNSATURATED MONOMERS COPOLYMERIZABLE THEREWITH, TO AN AQUEOUS SUSPENSION POLYMERIZATION IN THE PRESENCE OF 1 TO 5% BY WEIGHT, BASED ON THE WEIGHT OF SAID MONOMER OR THE MIXTURE THEREOF, OF A MONOGLYCERIDE REPRESENTED BY THE GENERAL FORMULA,
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