Reaction injection molded elastomer using a methylene bis(phenyl

Details Reaction injection molded elastomer using a methylene bis(phenyl Reaction injection molded elastomer using a methylene bis(phenyl

1983-06-08

1984-05-15

Welsh, Maurice J.

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

Synthetic resins

Cellular products or processes of preparing a cellular...

521163, 521167, 528 67, 528 68, 528 76, 528 77, C08G 1814

Patent

active

044489048

ABSTRACT:
The invention is a method of making a molded reaction injection molded elastomer. The reaction injection molded (RIM) elastomer is made by injecting via a RIM machine into a mold cavity of the desired configuration, a formulation comprising in the first stream amine terminated polyethers of greater than 1,500 molecular weight, a chain extender, and in the second stream methylene bis(phenylisocyanate) with a 2,4' isomer of greater than about 10%. RIM elastomers are useful, for example, for automobile body parts.

REFERENCES:
patent: 3394164 (1968-07-01), McClellan et al.
patent: 4246363 (1981-01-01), Turner et al.
patent: 4269945 (1981-05-01), Vanderhider et al.

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