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1. 发明授权

US4345043A Vinyl chloride resin composition 失效
标题翻译：氯乙烯树脂组合物
公开(公告)号：US4345043A
公开(公告)日：1982-08-17
申请号：US183833
申请日：1980-09-03
申请人： Haruhiko Yusa , Masanori Oota , Haruki Isaka
发明人： Haruhiko Yusa , Masanori Oota , Haruki Isaka
IPC分类号： C08L27/00 , C08F2/00 , C08F2/44 , C08K3/22 , C08K9/00 , C08K9/04 , C08K9/08 , C08L1/00 , C08L33/00 , C08L33/02 , C08L51/00 , C08L51/02
CPC分类号： C08K3/22 , C08K9/08
摘要： Modified titanium oxide is prepared by polymerizing a mixture of vinyl chloride and a carboxylic monomer such as 10-undecenoic acid in the presence of titanium oxide. The thus obtained, modified titanium oxide is mixed with a vinyl chloride resin, typically, polyvinyl chloride to give a vinyl chloride resin composition having an improved weatherability and being substantially free of serious drawbacks accompanying the addition of conventional titanium oxide such as plating out during extrusion and decrease in extrusion throughput.
摘要翻译：通过在二氧化钛的存在下聚合氯乙烯和羧酸单体如10-十一碳烯酸的混合物来制备改性氧化钛。将如此获得的改性氧化钛与氯乙烯树脂（通常为聚氯乙烯）混合，得到具有改善的耐候性的氯乙烯树脂组合物，并且基本上没有伴随常规氧化钛的添加的严重缺点，例如在挤出期间电镀并降低挤出产量。

2. 发明授权

US4897462A Process for producing rubber-based graft copolymers 失效
标题翻译：生产橡胶基接枝共聚物的方法
公开(公告)号：US4897462A
公开(公告)日：1990-01-30
申请号：US364496
申请日：1989-06-09
申请人： Haruhiko Yusa , Mitsuru Hoshino , Haruki Isaka
发明人： Haruhiko Yusa , Mitsuru Hoshino , Haruki Isaka
IPC分类号： C08F291/00 , C08F6/22 , C08F279/02 , C08F291/02 , C08J3/16
CPC分类号： C08J3/16 , C08F279/02 , C08F6/22
摘要： In a process for producing a rubber-containing graft copolymer, which comprises bringing a latex of a graft copolymer comprising 60% to 90% by weight of a rubbery polymer and 40% to 10% by weight of a hard polymer, said graft copolymer latex being obtained by emulsion polymerizing a hard polymer-forming monomer in a latex of said rubbery polymer and having a minimum film-forming temperature of 75.degree. C. or less, into contact with an aqueous electrolyte solution under stirring, thereby to coagulate the latex, and recovering the precipitated graft copolymer, the improvement is disclosed such that the graft copolymer latex is subjected to slow coagulation so as to allow the graft copolymer to precipitate as substantially spherical particles, wherein the term "slow coagulation" refers to coagulation which proceeds at a milder rate than that of coagulation in which the aqueous electrolyte solution is hydrochloric acid and the pH of the latex during coagulation is 1.8 or less.
摘要翻译：在制备含橡胶接枝共聚物的方法中，其包括将包含60重量％至90重量％的橡胶状聚合物和40重量％至10重量％的硬质聚合物的接枝共聚物的胶乳，所述接枝共聚物胶乳通过将所述橡胶状聚合物的胶乳中的硬聚合物形成性单体乳液聚合并且最低成膜温度为75℃以下，在搅拌下与含水电解质溶液接触而使胶乳凝聚而得到，回收沉淀的接枝共聚物时，公开了使接枝共聚物胶乳缓慢凝固以使接枝共聚物沉淀为基本上球形的颗粒的改进，其中术语“缓慢凝固”是指在其中电解质溶液为盐酸，凝固时的胶乳pH为1.8以下。

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