Polyurethane-forming binder systems containing a polyphosphoryl

Details Polyurethane-forming binder systems containing a polyphosphoryl Polyurethane-forming binder systems containing a polyphosphoryl

1992-07-15

1994-08-16

Michl, Paul R.

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

Synthetic resins

Processes of preparing a desired or intentional composition...

523141, 523142, 524121, 524136, 524149, C08K 551, C08G 1808, C08G 1854, B22C 902

Patent

active

053387740

ABSTRACT:
Polyphosphoryl chlorides are used in polyurethane-forming foundry binder systems to extend the bench life of foundry mixes prepared by mixing the binder systems with sand. The foundry mixes are particularly useful for preparing molds and cores used for making metal castings.

REFERENCES:
patent: 4436881 (1984-03-01), Laitar
patent: 4540724 (1985-09-01), Dunnavant et al.
patent: 4602069 (1986-07-01), Dunnavant et al.
patent: 4683252 (1987-07-01), Dunnavant et al.

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