Chain extenders for polyurethanes

Details Chain extenders for polyurethanes Chain extenders for polyurethanes

1988-03-04

1990-06-05

Kight, III, John

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

Synthetic resins

Cellular products or processes of preparing a cellular...

521159, 528 61, 528 62, 528 63, 528 64, 528 68, 528 73, 528 76, 528 80, 528 81, 528 83, 528 84, 528 85, 25218215, 25218217, 25218223, 25218224, 25214228, C08G 1800, C08G 1814

Patent

active

049314874

ABSTRACT:
Polyurethanes are produced from compositions comprising at least one relatively high equivalent weight component and at least one chain extender selected from the group consisting of heterocyclic diamines, diaromatic disulfides, alkyl ethers of halogen-substituted aromatic diamines, polysubstituted alkyl diamines and alkyl acid esters of halogen-substituted diamino phenols of designated structures. Polyurethanes having high thermal stability, high tear strength and high modulus are produced.

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