Polymeric compositions and their production and uses

Details Polymeric compositions and their production and uses Polymeric compositions and their production and uses

2003-07-31

2009-02-24

Sanders, Kriellion A (Department: 1796)

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

Synthetic resins

Processes of preparing a desired or intentional composition...

C523S223000, C524S379000, C524S551000, C524S556000

Reexamination Certificate

active

07495036

ABSTRACT:
A clear personal care or other aqueous gel is formed from dry polymer particles which are free of materials which render the gel cloudy and which are made by reverse phase emulsion polymerisation. The polymerisation process involves distilling water from the emulsion in the presence of sufficient non-aqueous liquid to prevent breakage of the emulsion and then washing the polymer particles with isopropanol or other suitable solvent and evaporating the solvent.

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patent: 5171781 (1992-12-01), Farrar et al.
patent: 5603926 (1997-02-01), Matsumoto et al.
patent: 6833406 (2004-12-01), Green et al.
patent: 0202780 (1986-04-01), None
patent: 0824914 (1997-08-01), None
patent: 0872491 (1998-04-01), None
patent: WO97/34945 (1997-03-01), None
patent: WO00/01757 (1999-06-01), None
patent: WO02/057322 (2002-01-01), None

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