Process for mixing polytetrafluoroethylene molding powder and or

Details Process for mixing polytetrafluoroethylene molding powder and or Process for mixing polytetrafluoroethylene molding powder and or

1990-08-01

1993-11-23

Marquis, Melvyn I.

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

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

525104, 525151, 525149, 525146, 525153, 525165, 525178, 525181, 525189, 525276, 524364, 523213, 523210, 523204, 523205, C08L 8300

Patent

active

052645231

ABSTRACT:
A uniform mixture of a polytetrafluoroethylene molding powder and an organic filler, which can provide moldings having improved properties without lowering the appearance and mechanical property, is obtained without sticking the filler to the wall of a mixer by mixing the molding powder and the filler in the presence of a silane coupling agent and a polar solvent, or by previously treating the organic filler with the silane coupling agent and mixing the treated filler with the molding powder.

REFERENCES:
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patent: 3992347 (1976-11-01), Vary
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patent: 4960827 (1990-10-01), Miyazaki et al.
patent: 4985483 (1991-01-01), Saito et al.
Derwent Abstract, No. 89-042687 [06], of JP-A 63-314291, Dec. 22, 1988 (Arai Pump Mfg Co.).
Derwent Abstract, No. 86-192294 [30], of JP-A 61-123655, Dec. 11, 1986 (Hitachi Chem. Co.).

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