Shell Oil Comapny

Cesar O Castro

Robert W Lee

Jennifer L Engle

Meredith S Ott

It is herein disclosed a method for controlling the shrinkage of parts formed from semi-crystalline polyolefin involving the addition of a suitable nucleant(s), in a suitable amount. This method results in reduced processing costs primarily due to reduced processing cycle time and to greater flexibility in the use of processing equipment.

Method for controlling polymer shrinkage

A coated object is produced by flame spraying the object with a substantially molten polymeric material which comprises a blend containing polybutylene homopolymer or copolymer, an adhesion promoter and a nucleating agent.

Coating process

It is herein provided a polymer blend comprising of polybutylene and a functionalized polyolefin such as maleated polypropylene. The blend has and exhibits an unexpectedly high degree of adhesion to polar polymers and metal surfaces, and enhances the use of polybutylene in applications for which adhesion to polar surfaces is required.

Polyolefin compositions

A coated object is produced by flame spraying the object with a substantially molten polymeric material which comprises a blend containing polybutylene homopolymer or copolymer and an adhesion promoter.

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Houston, TX, United States of America

Cesar O Castro