Children's washable paint

Compositions: coating or plastic – Materials or ingredients – Pigment – filler – or aggregate compositions – e.g. – stone,...

Reexamination Certificate

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Details

C106S192100, C106S203200, C106S311000, C106S487000, C106S499000, C524S035000, C524S045000

Reexamination Certificate

active

07153356

ABSTRACT:
The invention relates to a washable paint comprising about 2.5 to 10 weight percent of a high molecular weight polyethylene glycol having a molecular weight between 2,000 and 20,000, a water swellable clay in the amount of 0.5 to 1.5 weight percent; and a high molecular weight cellulosic thickener in the amount of about 1.0 to 2.5 weight percent, wherein the high molecular weight cellulosic thickener has a viscosity between 500 and 15,000 cps tested as a 2% by weight solution in water at 25° C. using a Brookfield DV-II+ viscometer with a number 21 spindle and a speed of 2 rpm, and wherein the paint has a viscosity of between 5,000 and 50,000 cps tested on a Brookfield DV-II+ viscometer with a number 6 spindle at 10 rpm and 52° C.

REFERENCES:
patent: 4504395 (1985-03-01), Harpel et al.
patent: 4677158 (1987-06-01), Tso et al.
patent: 4978390 (1990-12-01), Snedeker
patent: 5043013 (1991-08-01), Kluger et al.
patent: 5059244 (1991-10-01), King et al.
patent: 5116410 (1992-05-01), Miller
patent: 5480480 (1996-01-01), Lynch et al.
patent: 5574081 (1996-11-01), Kroon
patent: 5616635 (1997-04-01), Patel
patent: 6221145 (2001-04-01), McClain
patent: 6235273 (2001-05-01), Mackey

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