Polyurethane solutions

Details Polyurethane solutions Polyurethane solutions

1975-02-24

1977-05-17

Ziegler, J.

Stock material or miscellaneous articles

Structurally defined web or sheet

Discontinuous or differential coating, impregnation or bond

260 326NR, 260 775MA, 427246, 428290, 428425, 428904, B32B 700, C08K 517

Patent

active

040243079

ABSTRACT:
A process for the production of polyurethane solutions by reaction of a diisocyanate with a mixture of a glycol and a polymer bearing terminal hydroxy groups in a solvent medium under certain prescribed conditions. The resulting polyurethane solutions are especially valuable as impregnants or coating agents for textile substrates, for example in the preparation of a microporous synthetic leather.

REFERENCES:
patent: 3236811 (1966-02-01), Ellegast et al.
patent: 3457326 (1969-07-01), Kienle
patent: 3635907 (1972-01-01), Schulze et al.

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