Thermoplastic polyurethane molding compound for manufacturing gr

Details Thermoplastic polyurethane molding compound for manufacturing gr Thermoplastic polyurethane molding compound for manufacturing gr

1993-02-08

1996-07-30

Seidleck, James J.

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

Synthetic resins

From silicon reactant having at least one...

528 83, 528 85, 26433119, 428402, 150154, C08G 1842, C08G 1844, C08G 1861, C08J 518

Patent

active

055412777

ABSTRACT:
A thermoplastic sinterable powder for manufacturing grained, sintered plastic sheet is described, which is comprised 100 party by weight of an exclusively linear, aliphatic polyol mixture composed of 60 to 80 parts by weight of polycarbonate diol, having an MW of 2000 and a hydroxyl value of 56 based on adipic acid, hexane diol and neopentyl glycol, having an MW of 2000 and a hydroxyl value of 56. Also included is 1,6-hexamethylene diisocyanate in an equivalence ratio of about 2.8:1.0 to 4.2:1.0, with respect to the total polyol, with the exception of 1,4-butane diol which is added as a chain lengthener. The coefficient of the molding compound, calculated from the quotient of the equivalence ratios of the isocyanate groups multiplied by 100 and the sum of the hydroxyl groups of polyols and chain lengtheners is in the range of about 97 to 99.

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