Plastic and nonmetallic article shaping or treating: processes – Forming articles by uniting randomly associated particles
Patent
1982-08-02
1984-10-09
Cockeram, H. S.
Plastic and nonmetallic article shaping or treating: processes
Forming articles by uniting randomly associated particles
264122, 264123, 528 44, 528 51, 528 72, B29J 500, C08G 1838, C08G 1877
Patent
active
RE0317039
ABSTRACT:
A process is disclosed for the preparation of liquid, storage-stable, polyisocyanate compositions containing a release agent formed in situ which compositions are useful, for example, as binder resins in the formation of particle boards which latter, because of the presence of the release agent, show no tendency to adhere to the face of metal platens used in their formation. The process comprises heating an organic polyisocyanate (polymethylene polyphenyl polyisocyanate preferred) with an acid phosphate (e.g. a mixture of mono- and di-alkyl acid phosphates) under conditions controlled as to time and temperature so as to yield a product which is storage stable and shows no tendency to deposit solid or to separate into two liquid phases.
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Partin Robert M.
Prather Richard A.
Rabourn, deceased Warren J.
Williams David L.
Cockeram H. S.
Firth Denis A.
Kekich John
The Upjohn Company
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