Process for producing a flame-resistant elastic soft polyurethan

Details Process for producing a flame-resistant elastic soft polyurethan Process for producing a flame-resistant elastic soft polyurethan

1990-11-19

1992-12-08

Kight, III, John

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

Synthetic resins

Cellular products or processes of preparing a cellular...

521107, 521170, C08G 1806

Patent

active

051698765

ABSTRACT:
A process for producing a flame-resistant elastic soft polyurethane foam from a foam reaction component mixture of a polyol, a polyisocyanate, and a proportion of expanded graphite in the form of flakes as a flame retardant, includes initially admixing the flakes having a size on the order of magnitude of resultant foam cell walls with the polyol component. The flakes are incorporated to form at least part of the cell walls upon expansion of the foam.

REFERENCES:
patent: 4148781 (1979-04-01), Narakawa et al.
patent: 4529742 (1985-07-01), von Bonin et al.
patent: 4843105 (1989-06-01), Reischl et al.
patent: 4992481 (1991-02-01), von Bonin et al.

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