Paperboard impregnated with polyurethane resin

Details Paperboard impregnated with polyurethane resin Paperboard impregnated with polyurethane resin

1974-09-05

1976-04-27

Lusignan, Michael R.

Bleaching and dyeing; fluid treatment and chemical modification

Chemical modification of textiles or fibers or products thereof

Cellulose fibers

8DIG11, 428425, 428537, 260 775NC, 260 775AP, D06M 1334, D21H 140

Patent

active

039531694

ABSTRACT:
A paperboard impregnated with polyurethane resin having specific NCO content and average molecular weight at the rate of 0.05 to 5.0 weight percent relative to the paperboard has excellent mechanical properties such as compressive strength, tensile strength, tearing strength, folding endurance, etc., even in wet state.

REFERENCES:
patent: 3178310 (1965-04-01), Berger et al.
patent: 3413144 (1968-11-01), LaCombe et al.

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