Use of monohydroxylated polybutadiene as a reactive plasticizer

Details Use of monohydroxylated polybutadiene as a reactive plasticizer Use of monohydroxylated polybutadiene as a reactive plasticizer

1979-08-23

1980-12-30

Welsh, Maurice J.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Cellular products or processes of preparing a cellular...

528 49, C08G 1862

Patent

active

042424682

ABSTRACT:
The use is described of monohydroxy-terminated polybutadienes as reactive or internal plasticizers for polyurethanes. The polyurethanes are made in conventional manner by reacting at least one polyisocyanate with at least one polyol under polyurethane-forming conditions, which may include the presence of a catalyst. In accordance with the invention this reaction is carried out in the presence of a monohydroxy-terminated polybutadiene which may have a molecular weight of 500 to 100,000, preferably 900 to 20,000. As a monohydroxy-terminated polybutadiene is a constituent of the resulting polyurethane, the use of a polybutadiene diol as the polyol is excluded. Short chain polyols and conventional additives may be present and the resulting polyurethane may be in the form of a solid or a foam.

REFERENCES:
patent: 3674743 (1972-07-01), Verdol et al.
patent: 4021383 (1977-05-01), Cuscurida et al.
patent: 4133723 (1979-01-01), Howard
patent: 4174307 (1979-11-01), Rowe

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