Conductive polyurethane foam and process of contacting a polyure

Details Conductive polyurethane foam and process of contacting a polyure Conductive polyurethane foam and process of contacting a polyure

1984-12-20

1986-03-25

Welsh, Maurice J.

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

Synthetic resins

Cellular products or processes of preparing a cellular...

244 1A, 244135R, 280 5A, 521 54, 521 55, C08G 1814

Patent

active

045784060

ABSTRACT:
Polyurethane foam is modified by a post-treatment process comprising the steps of contacting the polyurethane foam with a swelling agent for the polyurethane foam and interpenetrating the swollen foam with a chemical additive, then shrinking the interpenetrated foam by removing the swelling agent under conditions where the chemical additive remains trapped in the polymeric structure of the foam.

REFERENCES:
patent: 3442692 (1969-05-01), Gaiser
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patent: 3635652 (1972-01-01), Streck
patent: 3696034 (1972-10-01), Hewitt et al.
patent: 3787279 (1974-01-01), Winchester
patent: 3799898 (1974-03-01), Lamplugh et al.
patent: 3843395 (1974-10-01), Morton et al.
patent: 3870145 (1975-03-01), Mizuno
patent: 3944694 (1976-03-01), McQueary
patent: 4012540 (1977-03-01), McQueary
patent: 4301040 (1981-11-01), Berbeco
patent: 4303755 (1981-12-01), Yukuta et al.
patent: 4522889 (1985-06-01), Ebneth et al.

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