Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From reactant having at least one -n=c=x group as well as...
Patent
1989-01-17
1990-12-25
Welsh, Maurice J.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
From reactant having at least one -n=c=x group as well as...
C08G 1842, C08G 1848
Patent
active
049804456
ABSTRACT:
The present invention concerns a thermoplastic polyurethane material which is the reaction product of (1) a mixture of (a) 0.86 to 0.98 mole equivalent of a polyester diol having the molecular weight of from 650 to 5,000 and (b) 0.02 to 0.14 mole equivalent of a polyether diol having the molecular weight of from 2,000 to 5,000, and (2) a difunctional chain extender with (3) an organic diisocyanate. These polyurethane materials exhibit high resistance to severe abrasion forces while retaining desirable mechanical properties and are useful for the manufacture of shoe soles, ski boots, ski bindings, conveyor belts and screens used by mining industry and the like.
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Bonk Henry W.
Penfold John
van der Wal Hanno R.
Fifield David H.
Karadzic Dragan J.
Sergent Rabon
The Dow Chemical Company
Welsh Maurice J.
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