Pattern material for making foundry patterns for use in investme

Details Pattern material for making foundry patterns for use in investme Pattern material for making foundry patterns for use in investme

1988-11-22

1990-07-03

Schofer, Joseph L.

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

Synthetic resins

Processes of preparing a desired or intentional composition...

524165, 524211, 524557, 524238, 524321, 524482, B22C 122

Patent

active

049391879

ABSTRACT:
A pattern material for making foundry patterns for use in investment casting process, comprising urea, polyvinyl alcohol and a substance, said substance being capable of forming an eutectic mixture with polyvinyl alcohol to reduce the melting temperature of urea.

REFERENCES:
patent: 3250748 (1966-05-01), Suzumura

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