Apparatus for blending and dispensing foamable, curable organosi

Details Apparatus for blending and dispensing foamable, curable organosi Apparatus for blending and dispensing foamable, curable organosi

1993-04-21

1994-07-19

Warden, Robert J.

Chemical apparatus and process disinfecting, deodorizing, preser

Chemical reactor

Organic polymerization

422134, 422135, 422225, 422137, 366177, 521 91, C08F 200, B01F 1502, C08J 900

Patent

active

053307240

ABSTRACT:
An apparatus for preparing foams exhibiting a uniformly small cell size, a minimum number of ruptured cell walls and a smooth surface from foamable curable compositions comprises means to transport the ingredients of a foamable, curable composition to the input of a static mixer in which the ingredients of the composition are blended to homogeneity prior to being extruded into an exit zone and through an exit orifice. The length to diameter ratio of the mixing zone and the diameter of the exit orifice are within specified ranges.

REFERENCES:
patent: 3554408 (1971-01-01), Fremstad
patent: 3923705 (1975-12-01), Smith
patent: 4438072 (1984-03-01), Nothnagel
patent: 4599367 (1986-07-01), Bauman et al.
patent: 4753391 (1988-06-01), Rogers
patent: 4771919 (1988-09-01), Ernst
patent: 4778631 (1988-10-01), Cobbs, Jr. et al.
patent: 4888217 (1989-12-01), Jones
patent: 5079292 (1992-01-01), Hoffman et al.
patent: 5082142 (1992-01-01), Saidman et al.
patent: 5225168 (1993-07-01), Knosla
"A Guide To Static Mixers" (Plastics World, May 1992, pp. 63-66).

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