Stable particulate dispersions

Details Stable particulate dispersions Stable particulate dispersions

1997-02-05

1997-11-25

Foelak, Morton

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

Synthetic resins

Cellular products or processes of preparing a cellular...

521114, 521116, 521117, 521122, 521130, C08G 1800

Patent

active

056913923

ABSTRACT:
A composition comprising a particulate dispersion of from 50% to 98.9% by weight of a siloxane-polyoxyalkylene copolymer surfactant, from 1% to 49.9% by weight of a nonionic organic surfactant other than the siloxane-polyoxyalkylene copolymer surfactant and from 0.1% to 25% by weight, based on the total weight of the composition, of a particulate material having a particle size of less than 20 microns, is described. A method of preparing such a composition, and polyurethane and polyisocyanurate foams containing such a composition are also described. The nonionic organic surfactant is preferably an ethoxylated nonylphenol. The particulate material is preferably a hydrophobic precipitated silica. The composition of the invention is useful as an additive in the preparation of rigid polyurethane and polyisocyanurate foams.

REFERENCES:
patent: 3001973 (1961-09-01), Plepenbrink et al.
patent: 3124605 (1964-03-01), Wagner
patent: 3152162 (1964-10-01), Fischer et al.
patent: 3394164 (1968-07-01), McClellan et al.
patent: 3401180 (1968-09-01), Pan et al.
patent: 3454606 (1969-07-01), Brotherton et al.
patent: 3492330 (1970-01-01), Trecker et al.
patent: 4065410 (1977-12-01), Schafer et al.
patent: 4217422 (1980-08-01), Wasilczyk
patent: 4751251 (1988-06-01), Thornsberry
patent: 4795763 (1989-01-01), Gluck et al.
patent: 5137927 (1992-08-01), Wolff et al.
patent: 5308881 (1994-05-01), Londrigan et al.
patent: 5308883 (1994-05-01), Londrigan et al.
patent: 5312848 (1994-05-01), Klapper et al.
M. Okoroafor, et al "Rigid Polyurethane Foams With Enhanced Thermal Insulation Performance", Polyurethanes 1995, Proceedings of the Polyurethanes 1995 Conference, pp. 303-309.

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