Polyurethane syntactic foam modeling stock

Details Polyurethane syntactic foam modeling stock Polyurethane syntactic foam modeling stock

1988-05-06

1990-04-10

Foelak, Morton

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

Synthetic resins

Processes of preparing a desired or intentional composition...

521 54, 523218, 528 77, C08J 932

Patent

active

049161733

ABSTRACT:
Polyurethane syntactic foam compositions having high glass transition temperatures and low coefficients of thermal expansion suitable for use in tooling applications as modeling stock are prepared from polymeric isocyanate, an amine-based polyol, a polyether triol, molecular sieve material and hollow microspheres.

REFERENCES:
patent: 3993608 (1976-11-01), Wells
patent: 4038238 (1977-07-01), Cravens
patent: 4075151 (1978-02-01), Olstowski
patent: 4082702 (1978-04-01), Harper
patent: 4303729 (1981-12-01), Torobin
patent: 4303730 (1981-12-01), Torobin
patent: 4476258 (1984-10-01), Hiles
patent: 4518718 (1985-05-01), Frost
patent: 4526906 (1985-07-01), Wegner
patent: 4528305 (1985-07-01), Henry

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