Polyurethane-forming foundry binders containing a polyester poly

Details Polyurethane-forming foundry binders containing a polyester poly Polyurethane-forming foundry binders containing a polyester poly

1988-10-31

1990-08-07

Welsh, Maurice J.

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

Synthetic resins

Processes of preparing a desired or intentional composition...

26433119, 525456, C08L 7504

Patent

active

049468766

ABSTRACT:
Certain polyester polyols are used in polyurethane-forming binders to improve the shakeout of molds and cores, made by a cold-box process, used to make low melting metal castings.

REFERENCES:
patent: 3904559 (1975-09-01), Furness et al.
patent: 4079031 (1978-03-01), Sardessai et al.
patent: 4293480 (1981-10-01), Martin et al.
patent: 4692479 (1987-09-01), Schneider et al.

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