Stabilized polymer compositions comprising one or more lubricating additives

Abstract

It is herein disclosed a composition comprising a major amount of polymers of carbon monoxide and one or more ethylenically unsaturated compounds and a minor amount of one or more external lubricating additives having an average molecular weight of at least 500. The composition may further comprise an internal lubricating additive. The inventive compositions have and exhibit improved stability properties.

What is claimed is: 
     
       1. A copolymer composition comprising a major amount of polymer of carbon monoxide and one or more ethylenically unsaturated compounds, a minor amount of one or more internal lubricating additives, and a minor amount of one or more external lubricating additives having an average molecular weight of at least 500. 
     
     
       2. A composition as in claim 1 wherein said additives have an average molecular weight of from about 1,000 to 10,000. 
     
     
       3. A composition as in claim 1 wherein said lubricating additive substantially consist of long-chain hydrocarbons, modified with one or more polar groups. 
     
     
       4. A composition as in claim 1 wherein said the lubricating additives substantially consist of polyolefins modified with one or more oxygen-containing moieties. 
     
     
       5. A composition as in claim 4, wherein in said lubricating additive the oxygen content is less than 25% by weight. 
     
     
       6. A composition as in claim 4 wherein said additives comprise an oxidized polyethylene. 
     
     
       7. A composition as in claim 4 wherein said lubricating additive comprises copolymer of ethene with vinylacetate.