公开(公告)号：US20140024755A1

公开(公告)日：2014-01-23

申请号：US14031922

申请日：2013-09-19

Applicant: LG CHEM, LTD.

Inventor： Yong Jin KIM ,  Kun Ji KIM

IPC: C08K5/5419 ,  C08L31/04 ,  C08K5/524

CPC classification number: C08L31/04 ,  C08F6/003 ,  C08F14/06 ,  C08K5/524 ,  C08K5/5419 ,  C08L27/06

Abstract: Disclosed is a method for defoaming a vinyl chloride resin slurry. The agent of the present invention may prevent generation of Fish eyes and deteriorate in production efficiency caused by slurry foams without inhibiting inherent transparency of vinyl chloride resins, in the process of preparing the vinyl chloride resins by polymerizing a monomer mixture containing vinyl chloride as a main component in a polymerization reactor.

Abstract translation: 公开了一种氯乙烯树脂浆料的消泡方法。 本发明的试剂在通过聚合含有氯乙烯作为主要成分的单体混合物制备氯乙烯树脂的过程中可以防止鱼眼的产生并且在不抑制氯乙烯树脂的固有透明性的情况下由浆料泡沫引起的生产效率劣化 聚合反应器中的组分。

公开(公告)号：US20160340452A1

公开(公告)日：2016-11-24

申请号：US15111407

申请日：2015-09-14

Applicant: LG CHEM, LTD.

Inventor： Kyung Seog YOUK ,  Kyung Hyun KIM ,  Hyun Min LEE ,  Yong Jin KIM ,  Heung Kwon BAE ,  Jung Rae LEE

IPC: C08F114/06

CPC classification number: C08F114/06 ,  C08F2/18 ,  C08F2/20 ,  C08F2/44 ,  C08F4/34 ,  C08F6/003 ,  C08F6/24 ,  C08F14/06 ,  C08L27/06

Abstract: The present invention relates to a method of preparing a vinyl chloride polymer having good thermal stability due to the restraint of dehydrochlorination by heat or ultraviolet rays, and a vinyl chloride polymer prepared thereby. In the preparation method, a modifier is introduced at the end of a polymerization process to impart the vinyl chloride polymer with high thermal stability without inducing modification. Therefore, the generation of dehydrochlorination due to heat or ultraviolet rays may be markedly restrained, thermal stability may be improved, and discoloration or the modification of physical properties may be prevented in the vinyl chloride polymer thus prepared.

Abstract translation: 本发明涉及由于通过热或紫外线的脱氯化氢的限制以及由此制备的氯乙烯聚合物制备具有良好的热稳定性的氯乙烯聚合物的方法。 在制备方法中，在聚合过程结束时引入改性剂以使氯乙烯聚合物具有高热稳定性而不引起改性。 因此，可以显着抑制由于热或紫外线引起的脱氯化氢的产生，可以提高热稳定性，并且在由此制备的氯乙烯聚合物中可以防止变色或物理性质的改变。