Hot melt composition and process for forming the same

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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524292, 528 44, 528 80, 521130, C08K 509, C08G 512, C08G 1842

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active

046084185

ABSTRACT:
Thermoplastic hot melt compositions and process for forming such compositions are disclosed. The compositions comprise a polyurethane having at least one plasticizer reacted therein formed by heating a reaction mixture comprising at least one isocyanate having a functionality less than about 2, at least one long chain polyol, at least one chain extender and the at least one plasticizer at a temperature of at least about 330.degree. F. where the components are present in an amount as defined in the specification. The process is adequately reflected by the above language.

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patent: 3813380 (1974-05-01), Bock et al.
patent: 3931077 (1976-01-01), Uchigaki et al.
patent: 4153594 (1979-05-01), Wilson
patent: 4316832 (1982-02-01), Walkden
patent: 4395530 (1983-07-01), Hammond

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