Method of making a leather-like sheet material by coagulating tw

Details Method of making a leather-like sheet material by coagulating tw Method of making a leather-like sheet material by coagulating tw

1975-12-24

1977-10-11

Smith, Ronald H.

Plastic and nonmetallic article shaping or treating: processes

Pore forming in situ

By treating occluded solids

264103, 264136, 264171, 156 77, 260 25AY, 427246, 427371, 427401, 428315, 428317, 428425, 428904, B29D 2704, B05D 500

Patent

active

040535460

ABSTRACT:
Method of making a leather-like sheet material having a low bounce impact elasticity, which comprises: (a) mixing (i) a solvent solution of a polymer (A) consisting mainly of an elastomer and (ii) a dispersion in a liquid of a polymer (B) consisting mainly of an elastomer, thereby obtaining a composite solution containing fine particles of (B) dispersed in a solution of polymer (A); (b) coating a sheet or impregnating a fibrous mat substrate with the composite solution; (c) immersing the substrate in a coagulation bath to deposit and coagulate both polymers; and (d) drying said sheet or mat.

REFERENCES:
patent: 3544357 (1970-12-01), Noda et al.
patent: 3684556 (1972-08-01), Mahl et al.
patent: 3817820 (1974-06-01), Smith
patent: 3922470 (1975-11-01), Amano et al.
Hackh's Chemical Dictionary, 4th ed., New York, McGraw-Hill Book Co., p. 168.

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