Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From reactant having at least one -n=c=x group as well as...
Patent
1980-03-26
1981-03-24
Woodberry, Edward M.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
From reactant having at least one -n=c=x group as well as...
260 9, 264109, 264122, 528 51, 528 75, C08G 1828
Patent
active
042581699
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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patent: 3919017 (1975-11-01), Shoemaker et al.
patent: 3943075 (1976-03-01), Fishbein et al.
patent: 4005034 (1977-01-01), Weil
patent: 4024088 (1977-05-01), Godlewski
patent: 4100328 (1978-07-01), Gallagher
Partin Robert M.
Prather Richard A.
Rabourn Warren J.
Williams David L.
Firth Denis A.
Kekich John
The Upjohn Company
Woodberry Edward M.
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