Vinyl chloride resin composition

Abstract

The present invention provides a vinyl chloride resin composition having excellent mechanical properties. The vinyl chloride resin composition comprises a chlorinated polyolefin and a resin composition containing a vinyl chloride resin and a polyolefin resin, in which 1 to 30 parts by weight of the chlorinated polyolefin is included relative to 100 parts by weight of the resin composition including 50 to 99 parts by weight of the vinyl chloride resin containing 0 to 50% by weight of a plasticizer and 1 to 50 parts by weight of the polyolefin resin, and in which the chlorinated polyolefin has a heat of fusion of 10 to 100 J/g, which is measured in accordance with a DSC method, and includes 35 to 60% by weight of chlorine in amorphous portions thereof.

What is claimed is:  
     
         1 . A compatibilizer comprising a chlorinated polyolefin having a heat of fusion of 10 to 100 J/g, which is measured by a DSC method, and containing 35 to 60% by weight of chlorine in amorphous portions thereof.  
     
     
         2 . A compatibilizer according to  claim 1 , wherein the chlorinated polyolefin is a chlorinated homopolymer of ethylene, propylene, 1-butene, 1-pentene, 1-hexene, or 4-methyl-1-pentene.  
     
     
         3 . A compatibilizer according to  claim 1 , wherein the chlorinated polyolefin is a chlorinated copolymer of ethylene with an α-olefin selected from the group consisting of propylene, 1-butene, 1-hexene, 1-octene, and 4-methyl-1-pentene.  
     
     
         4 . A compatibilizer according to  claim 1 , wherein the chlorinated polyolefin is a chlorinated copolymer of two or more α-olefins.  
     
     
         5 . A compatibilizer according to  claim 1 , wherein the chlorinated polyolefin is a chlorinated polyethylene.  
     
     
         6 . A compatibilizer according to  claim 1 , wherein the chlorinated polyolefin has a heat of fusion of 15 to 80 J/g, which is measured by a DSC method.  
     
     
         7 . A compatibilizer according to  claim 1 , wherein the chlorinated polyolefin contains 40 to 55% by weight of chlorine in amorphous portions thereof.  
     
     
         8 . A compatibilizer according to  claim 1  which is capable of forming a homogeneous mixture of a vinyl chloride resin and a polyolefin resin.