Polyurethane foam from cellulosic products

Details Polyurethane foam from cellulosic products Polyurethane foam from cellulosic products

1983-02-24

1985-06-04

Kight, John

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

Synthetic resins

Cellular products or processes of preparing a cellular...

521108, 521109, 521110, 521119, 521123, 521128, 521131, C08L 100, C08J 900

Patent

active

045215448

ABSTRACT:
A polyurethane foam can be made from waste cellulosic products such as papermill sludge, wood chips, wood particles, sawdust, waste paper or cardboard scraps. The polyurethane foam is made by reacting together a polyisocyanate, a catalyst, and a cellulosic material.

REFERENCES:
patent: 4230822 (1980-10-01), Murch et al.
patent: 4400475 (1983-08-01), Kennedy

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