公开(公告)号：US3862066A

公开(公告)日：1975-01-21

申请号：US22179972

申请日：1972-01-28

申请人： UNIVERSAL PVC RESINS

发明人： REITER WILLIAM M ,  COOPER JAMES E ,  LILLEY WALTER J

IPC分类号： C08F14/06 ,  C08F19/14 ,  C08F21/04

CPC分类号： C08F14/06 ,  C08F2/44

摘要： An improved method for making rigid vinyl chloride polymer compounds based on polyvinyl chloride suspension resin involves polymerizing vinyl chloride monomer in aqueous suspension in the presence, as additives, of dissolved or dispersed lubricant and stabilizer and at least one other additive selected from the group consisting of dispersed pigment and dispersed polymeric polymer modifier, which additives have been added to the polymerization vessel prior to or after initiation but before termination of the polymerization in amount calculated to incorporate each additive in the polymer in predetermined proportion with respect to the polymer, based on the amount of polymer formed at predetermined level of monomer conversion in the range of between 50 percent and 92 percent, and then shortstopping the polymerization at that predetermined level of conversion by adding a short-stopping agent, so that the lubricant, stabilizer and other additive are homogeneously incorporated into the polymer in controlled, predetermined proportions with respect to the polymeric polymer.

摘要翻译： 用于制备基于聚氯乙烯悬浮树脂的刚性氯乙烯聚合物化合物的改进方法包括在作为添加剂的溶解或分散的润滑剂和稳定剂以及至少一种其它添加剂的情况下将乙烯基氯单体聚合在水性悬浮液中，所述添加剂选自 分散的颜料和分散的聚合物聚合物改性剂，其添加剂已经在引发之前或之后但在聚合终止之前加入到聚合容器中，其数量被计算为相对于聚合物以预定比例将聚合物中的每种添加剂掺入聚合物中，基于 以预定水平的单体转化率在50％至92％的范围内形成的聚合物的量，然后通过添加短暂停止剂将聚合反应短暂停止在该预定转化水平，使润滑剂，稳定剂等 添加剂均匀地结合到聚合物中 相对于聚合物聚合物具有受控的预定比例。

公开(公告)号：US3825512A

公开(公告)日：1974-07-23

申请号：US28817672

申请日：1972-09-11

申请人： SUMITOMO CHEMICAL CO ,  UNIVERSAL PVC RESINS

发明人： REITER W ,  COOPER J ,  SHETH K

IPC分类号： C08F14/00 ,  B01J19/00 ,  B01J19/26 ,  C08F2/00 ,  C08F6/00 ,  C08F6/06 ,  C08F14/06 ,  C08F1/11

CPC分类号： B01J19/26 ,  B01J19/0013 ,  B01J2219/00101 ,  B01J2219/00108 ,  C08F14/06 ,  C08F2/16

摘要： FFIG-01 THIS INVENTION PROVIDE AN IMPROVED PROCESS FOR POLYMERIZING VINYL CHLORIDE IN AN AQUEOUS MEDIUM USING A REFLUX CONDENSER. THE IMPROVEMENT COMPRISES (1) DURING THE CONDENSATION PERIOD SPRAYING A COATING OF WATER ON THE INNER SURFACES OF THE COMDENSER TO INHIBIT THE FORMATION THEREON OF POLYMERIZED VINYL CHLORIDE PARTICLES, AND (2) SPRAYING WATER IN THE PATHOF AND IN A DIRECTION COUNTER-CURRENT TO THE FLOW OF VINYL CHLORIDE VAPORR AS IT PROGRESSES FROM THE REACTOR TO WITHIN THE CONDENSER THEREBY TO ASSIST IN CONDENSING THE VINYL CHLORIDE FOR RETURN TO THE REACTOR. THE SPRAY MAY INCLUDE A DEFOAMER TO REDUCER THE TENDENCY OF CARRYOVER OF POLYMER INTO THE CONDENSER TUBES.

公开(公告)号：US3808184A

公开(公告)日：1974-04-30

申请号：US26285072

申请日：1972-06-14

申请人： UNIVERSAL PVC RESINS

发明人： REITER W ,  SHETH K ,  STALLINGS J

IPC分类号： C08J11/02 ,  C08F1/88

CPC分类号： C08J11/02

摘要： IN THE POLYMERIZATION OF VINYL CHLORIDE, UNREACTED MONOMER RECOVERED AFTER POLYMERIZATION IS PREVENTED FROM POLYMERIZING IN THE RECOVERY SYSTEM BY A NONTOXIC, WATER-MISCIBLE, VINYL CHLORIDE-IMMISCIBLE POLYMERIZATION INHIBITOR HAVING A HIGH BOILING POINT, SUCH AS TRIETHANOL AMINE, ADDED TO THE UNREACTED MONOMER IN THE RECOVERY SYSTEM.

公开(公告)号：US3778423A

公开(公告)日：1973-12-11

申请号：US3778423D

申请日：1971-06-28

申请人： UNIVERSAL PVC RESINS

发明人： REITER W

IPC分类号： C08F14/00 ,  C08F2/00 ,  C08F2/42 ,  C08F3/22

CPC分类号： C08F2/004

摘要： IN THE POLYMERIZATION OF VINYL CHLORIDE IN THE PRESENCE OF AN OIL-SOLUBLE POLYMERIZATION INITIATOR, ADHESION OF VINYL CHLORIDE POLYMER TO THE INTERIOR SURFACE OF THE POLYMERIZATION VESSEL IS SUBSTANTIALLY REDUCED BY COATING THE SURFACE, PRIOR TO POLYMERIZATION, WITH A FREE RADICAL INHIBITOR.