Method and apparatus for controlling the number of cells in poly

Details Method and apparatus for controlling the number of cells in poly Method and apparatus for controlling the number of cells in poly

1995-05-30

1996-05-28

Foelak, Morton

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

Synthetic resins

Cellular products or processes of preparing a cellular...

422133, 422135, 422136, 521917, C08J 900, C08F 200

Patent

active

055212247

ABSTRACT:
The invention relates to a method and an apparatus for producing polyurethane foam with a controlled number of cells, in which a gas is dispersed in one of the components, i.e. the polyol or the isocyanate, in a dispersing device arranged between the mixing head and the metering pump for the respective component.

REFERENCES:
patent: 4204977 (1980-05-01), Zwirlein
patent: 4764536 (1988-08-01), Proksa et al.
patent: 4933115 (1990-06-01), Krippl et al.
patent: 5055272 (1991-10-01), Wheeler et al.
patent: 5270014 (1993-12-01), Bauer et al.
patent: 5296517 (1994-03-01), Wetzig et al.
patent: 5451376 (1995-09-01), Proksa et al.

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