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

1982-04-06

Albrecht, Dennis L.

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

Synthetic resins

Cellular products or processes of preparing a cellular...

1510493, 15244C, 252 91, 252 92, 252134, 252174, 252DIG16, 521122, 521125, A47L 1317, C08G 1816, C08J 514, C11D 1704

Patent

active

043236561

ABSTRACT:
This disclosure teaches synthetic polyurethane sponges manufactured with at least 5% 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: 3252775 (1966-05-01), Tocci-Guilbert
patent: 3293684 (1966-12-01), Tundermann
patent: 3570036 (1971-03-01), Gilchrist
patent: 3810841 (1974-05-01), Richter
Vierling et al.; "Formulating Chemical Specialties with Silicones", Soap & Chemical Specialties, May 1967, pp. 96, 98 and 100.

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