公开(公告)号：US3726946A

公开(公告)日：1973-04-10

申请号：US3726946D

申请日：1971-02-23

申请人： MONTEDISON SPA

发明人： PAGLIARI A ,  SEVERINI F ,  VALVASSORI A

IPC分类号： C08F283/14 ,  C08L27/06 ,  C08L51/06 ,  C08F39/00

CPC分类号： C08F283/14 ,  C08L27/06 ,  C08L51/06 ,  C08L51/08 ,  C08L25/06 ,  C08F214/06 ,  C08L2666/24

摘要： There are disclosed new, high-impact resistant compositions based on polyvinylchloride and comprising graft copolymers of vinyl monomers and certain rubbery polyalkenamers having a narrow molecular weight distribution. Unexpectedly, the graft copolymers function to improve the mechanical properties, more particularly the impact resistance, of the compositions, as compared to polyvinylchloride, per se. That polyvinylchloride tends to be brittle and to have relatively low impact resistance is well known. In the past, it has been attempted to overcome the brittleness of polyvinylchloride, and its relatively low impact resistance by incorporating various plasticizers with it. A problem has been the tendency of the plasticizers to ''''bleed,'''' a result of a basic incompatibility of the polyvinylchloride and the plasticizers available.

摘要翻译： 公开了基于聚氯乙烯的新的高抗冲击组合物，并且包括乙烯基单体和具有窄分子量分布的某些橡胶状多烯烃的接枝共聚物。 出乎意料地，与聚氯乙烯本身相比，接枝共聚物的作用是改善组合物的机械性能，更具体地说是改善耐冲击性。

公开(公告)号：US3812204A

公开(公告)日：1974-05-21

申请号：US24859272

申请日：1972-04-28

申请人： MONTEDISON SPA

发明人： SEVERINI F ,  TOFFANO S ,  NATTA G ,  BEATI E

IPC分类号： C08L23/16 ,  C08L27/06 ,  C08L51/06 ,  C08F15/00

CPC分类号： C08L27/06 ,  C08L23/16 ,  C08L51/06 ,  C08L2666/02

摘要： POLYMERIC COMPOSITIONS COMPRISING GRAFT COPOLYMERS OF VINYL CHLORIDE AND FROM 2% TO 25% BY WEIGHT OF AN AMORPHOUS ETHYLENE COPOLYMER, WHICH COMPOSITIONS ARE DIRECTLY USEABLE AS PRODUCED, WITHOUT SOLVENT EXTRACTION, IN THE MANUFACTURE OF SHAPED ARTICLES HAVING COMMERCIALLY ACCEPTABLE MECHANICAL PROPERTIES INCLUDING IMPACT STRENGTH, ARE PROVIDED. THE COMPOSITIONS ARE OBTAINED BY POLYMERIZING VINYL CHLORIDE IN CONTACT WITH THE AMORPHOUS ETHYLENE COPOLYMER AND AN INITIATOR OF THE VINYL CHLORIDE POLYMERIZATION.

公开(公告)号：US3849518A

公开(公告)日：1974-11-19

申请号：US31587972

申请日：1972-12-18

申请人： MONTEDISON SPA ,  SEVERINI F ,  VALVASSORI A ,  TAVAZZANI C ,  PAGLIARI A

发明人： MONTECATINI EDISON SPA ,  SEVERINI F ,  VALVASSORI A ,  TAVAZZANI C ,  PAGLIARI A

IPC分类号： C08F255/00 ,  C08F255/02 ,  C08F255/04 ,  C08F15/00

CPC分类号： C08F255/02

摘要： 1. A PROCESS FOR PREPARING IMPACT-RESISTANT POLYMERIC COMPOSITIONS COMPRISING GRAFT POLYMERIZING AT LEAST ONE ETHYLENICALLY UNSATURATED MONOMER SELECTED FROM THE GOUP CONSISTING OF STYRENES, ACRYLONITRILE, METHACRYLONITRILE, STYRENE/ACRYLONITRILE MIXTURES, ALKYL ACRYLATES, ALKYL METHACRYALTES, VINYL CHLORIDE AND VINYL ACETATE ONTO AN ELASTOMER SELECTED FROM THE GROUP CONSISTING OF SATURATED COPOLYMERS OF ETHYLENE AND AN A-OLEFIN AND LOW UNSATURATION COPOLYMERS OF ETHYLENE, AND A-OLEFIN AND A DIENE OR POLYENE HYDROCARBON, WHEREIN SAID ELASTOMER IS DISSOLVED IN A SOLVENT SELECTED FROM THE GROUP CONSISTING OF N-BUTANE, PROPANE AND MIXTURES THEREOF.