Process for improving the water vapor absorption capacity of tex

Details Process for improving the water vapor absorption capacity of tex Process for improving the water vapor absorption capacity of tex

1978-04-24

1981-04-28

Lusignan, Michael R.

Coating processes

Electrical product produced

Welding electrode

427246, 427381, 427386, 427387, 4273899, 428290, 428904, B05D 302, B05D 306, B05D 500, C08G 918

Patent

active

042646456

ABSTRACT:
The present invention is concerned with a method for improving the water storage capacity of textile substrates, particularly fleece based artificial leathers by treatment with a hydrophilizing agent. This agent, once applied to the substrate is insoluble in but swellable in water. The agent in an uncross-linked state is water soluble and has a turbidity point of between about 25.degree. and 95.degree. C. in a 25% aqueous solution. The agent may be applied to the substrate from aqueous solution and then cross-linked or it may be applied to an inert carrier such as kaolin, cross-linked and applied to the substrate from an aqueous suspension. A particularly suitable agent is a polyether with a molecular weight of between 500 and 8500, an ethylene oxide content of about 35 to 80 wt. % and cross-linkable end groups. The end groups may be self cross-linking such as vinyl groups or they may be cross-linkable via a cross-linking promoter such as hexamethylol melamine. These end groups include the hydroxyl groups normally present in polyethers produced from polyalkylene oxides.

REFERENCES:
patent: 3632417 (1972-01-01), Brasen
patent: 3865622 (1975-02-01), Blair
patent: 3940535 (1976-02-01), Gaeth et al.
patent: 3949123 (1976-04-01), Steel
patent: 3985929 (1976-10-01), von Bonin et al.
Gaylord, Norman G., Polyethers, pp. 231-233, 1963.

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