Leathery sheet material and process for the preparation thereof

Details Leathery sheet material and process for the preparation thereof Leathery sheet material and process for the preparation thereof

1978-11-08

1980-11-11

McCamish, Marion

Stock material or miscellaneous articles

Structurally defined web or sheet

Discontinuous or differential coating, impregnation or bond

427245, 4273899, 428264, 428265, 428267, 428290, 4284235, 4284237, 4284251, 428904, B32B 2740

Patent

active

042333598

ABSTRACT:
A leathery sheet material which comprises a fibrous mat and a polyurethane composition applied all over the mat in an amount of 10 to 80% by weight based on the total weight of the mat and the polyurethane composition. The polyurethane composition contains 0.1 to 5.0% by weight of a surface active agent having a molecular weight of 2,500 to 30,000 which comprises a hydrophilic component and a hydrophobic component being combined by a urethane bond and/or an amide bond. The hydrophilic component is polyethylene oxides comprising 30 to 80% by weight of the surface active agent and the hydrophobic component is a member selected from the group consisting of a polyalkylene oxides excepting polyethylene oxides, aliphatic polyesters and mixtures thereof. The leathery sheet material has excellent flexibility, excellent antistatic properties and excellent soil resistance.

REFERENCES:
patent: 3985929 (1976-10-01), von Bonin et al.
patent: 4053546 (1977-10-01), Yamasaki et al.
patent: 4068035 (1978-01-01), Violland et al.
patent: 4092286 (1978-05-01), Nou et al.

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