Polyurethane sponges manufactured with additive dispersed therei

Details Polyurethane sponges manufactured with additive dispersed therei Polyurethane sponges manufactured with additive dispersed therei

1978-10-30

1981-06-02

Cockeram, H. S.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Cellular products or processes of preparing a cellular...

521109, 521121, 521125, 521129, 521130, 521132, 521905, C08G 1814, C08G 1816

Patent

active

042712726

ABSTRACT:
This disclosure teaches synthetic polyurethane sponges manufactured with at least 4% of one or more additives dispersed therein. The additives may be soap, lotions, detergents, pesticides, lanolin, scouring particles, silicone oils, bath oils, or the like or combinations thereof. The sponges' skeletons are developed by reaction of a polyether or a polyester with a suitable isocyanate in the presence of a catalyst with the additives entrapped in voids of the sponges. An additive bearing material, i.e. a carrier material containing the additive is prepared. The carrier material is then mixed into a foam forming reaction mass. By this expedient the additive does not impair desired foam formation. The sponges are provided with high liquid absorbency and fine "hand" by virtue of manufacturing methods and specific catalysts employed.

REFERENCES:
patent: 3002937 (1961-10-01), Parker et al.
patent: 3262450 (1966-07-01), Elias
patent: 3706681 (1972-12-01), Bachura
patent: 3810841 (1974-05-01), Richter
patent: 3816610 (1974-06-01), Lusby
patent: 3939260 (1976-02-01), Lafon
patent: 3975350 (1976-08-01), Hudgin et al.
patent: 4094970 (1978-06-01), Behrenz et al.

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