Organic compounds -- part of the class 532-570 series – Organic compounds – Isocyanate esters
Patent
1993-06-30
1994-02-22
Prescott, Arthur C.
Organic compounds -- part of the class 532-570 series
Organic compounds
Isocyanate esters
560331, C07C24900
Patent
active
052888991
ABSTRACT:
The present invention relates to a liquid, storage-stable isocyanate having a viscosity of less than 100,000 mPa.s at 25.degree. C. and an isocyanate content of from about 10 to 29% by weight, and is prepared by reacting a solid or semi-solid diphenylmethane diisocyanate with a blocking agent. More generally, the liquid isocyanate is prepared by reacting the solid or semi-solid diphenylmethane diisocyanate with the blocking agent in quantities such that from 7 to 55% of the isocyanate groups are blocked. Preferred blocking agents are the ketoximes, and mixtures thereof.
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Kane Scott A.
Rosthauser James W.
Seneker Stephen D.
Brown N. Denise
Gil Joseph C.
Miles Inc.
Prescott Arthur C.
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