Hexamethylene diisocyanate residue-based compositions as fillers

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...

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2521822, 524196, 525457, 528 49, 528 59, 528 76, 528 80, 528 85, 560157, 560158, 560330, 560355, 521 405, 521 495, C08K 5205, C08K 529, C08L 7504, C08G 1872

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057392072

ABSTRACT:
Urethane-filled polyisocyanates are produced by (a) reacting a hexamethylene diisocyanate-containing residue having less than 10% by weight monomeric hexamethylene diisocyanate and a total NCO content of at least 25% with an alcohol containing at least one ether linkage in an equivalent ratio of isocyanate to hydroxyl groups of from about 0.9:1 to about 1.0:0.9 and (b) dissolving the product of (a) in a polyisocyanate. These urethane-filled polyisocyanates are particularly useful in the production of polyurethanes.

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

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