Rubber pellets comprising silicatic and oxidic fillers

Details Rubber pellets comprising silicatic and oxidic fillers Rubber pellets comprising silicatic and oxidic fillers

2005-04-12

2005-04-12

Robertson, Jeffrey B. (Department: 1712)

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

Synthetic resins

Processes of preparing a desired or intentional composition...

C523S205000, C523S209000, C524S424000, C524S588000

Reexamination Certificate

active

06878759

ABSTRACT:
The present invention provides a process, which includes:a) suspending:at least one filler selected from the group including silicatic filler, oxidic filler, and a mixture thereof,0.5 to 7% by weight, based on the weight of the filler, of at least one polysiloxane hydrophobicizing agent, and0.1 to 2% by weight, based on the weight of the filler, of at least one non-ionic surfactant,in water at a temperature of 10 to 60° C.,to prepare a suspension having a solids content of 0.5 to 15% by weight, based on the weight of the suspension;b) contacting a rubber latex emulsion and the suspension, to prepare a mixture;c) contacting the mixture with at least one acid to lower the pH of the mixture to 2.5-7, to prepare a filled rubber powder precipitate and a liquid;d) separating at least a portion of the liquid from the filled rubber powder precipitate, to form a filtercake comprising the filled rubber powder precipitate;e) optionally shaping, comminuting, or pelletizing the filtercake, andf) drying to a moisture level of 3% by weight.

REFERENCES:
patent: 5486551 (1996-01-01), Polmanteer
patent: 5674935 (1997-10-01), Evans et al.
patent: 5846506 (1998-12-01), Esch et al.
patent: 5859117 (1999-01-01), Goerl et al.
patent: 5925708 (1999-07-01), Esch et al.
patent: 6277902 (2001-08-01), Scholl
patent: 6329449 (2001-12-01), Goerl et al.
patent: 6340724 (2002-01-01), Goerl et al.
patent: 6391944 (2002-05-01), Canpont et al.
patent: 6433064 (2002-08-01), Goerl et al.
patent: 6437042 (2002-08-01), Kobayashi et al.
patent: 6548584 (2003-04-01), Goerl et al.
patent: 0 900 829 (1999-03-01), None
patent: 0 955 344 (1999-11-01), None
patent: 1 209 193 (2002-05-01), None
U.S. Appl. No. 09/580,526, Ernst, et al. filed May 30, 2000.
U.S. Appl. No. 09/576,179.
U.S. Appl. No. 08/870,591, Esch et al..
U.S. Appl. No. 10/273,304, Goerl et al., Oct. 18, 2002.

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