Foundary binder systems which contain alcohol modified polyisocy

Details Foundary binder systems which contain alcohol modified polyisocy Foundary binder systems which contain alcohol modified polyisocy

1996-11-07

1999-02-23

Michl, Paul R.

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

Synthetic resins

Processes of preparing a desired or intentional composition...

B22C 122

Patent

active

058744878

ABSTRACT:
The invention relates to foundry binder systems which use modified polyisocyanates. The modified polyisocyanates are prepared by reacting a polyisocyanate with an aliphatic alcohol having one active hydrogen atom. These modified polyisocyanates, along with a phenolic resole resin, are added to a foundry aggregate to form a foundry mix which is shaped and cured with a gaseous amine curing catalyst.

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