Dicyclohexylmethane diisocyanate residue-based compositions and

Details Dicyclohexylmethane diisocyanate residue-based compositions and Dicyclohexylmethane diisocyanate residue-based compositions and

1996-12-27

1998-05-19

Sergent, Rabon

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

Synthetic resins

At least one aryl ring which is part of a fused or bridged...

2521822, 25218221, 25218222, 25218224, 25218227, 25218228, 524196, 524198, 524199, 524366, 524377, 524762, 524765, 524773, 525452, 525453, 525454, 525457, 525458, 525460, 528 49, 528 59, 528 67, 528 76, 528 77, 528 80, 528 81, 528 85, 560115, 560330, 560336, 560354, 521 405, 521 495, C08K 5205, C08K 529, C08K 506, C08K 510, C08L 7504, C08L 7506, C08L 7508, C07C26902

Patent

active

057537496

ABSTRACT:
Urethane-filled compositions are produced by reacting a dicyclohexylmethane diisocyanate residue or a dicyclohexylmethane diisocyanate residue containing mixture with a monofunctional alcohol containing at least one ether group in an amount such that the equivalent ratio isocyanate groups to hydroxyl groups is from about 0.9:1 to about 1:0.9. The diisocyanate residue or residue-containing mixture must contain at least 20% by weight monomeric diisocyanate and have a total NCO content of at least 10%. The diisocyanate residue is produced by phosgenating dicyclohexylmethane diamine in which less than 20% polymeric diamine is present. The urethane filled compositions produced in this manner may then be dissolved in either a polyol or a polyisocyanate and subsequently used to produce polyurethanes in known manner.

REFERENCES:
patent: 4507464 (1985-03-01), Rasshofer

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