Defoamer compositions

Details Defoamer compositions Defoamer compositions

1990-11-16

1993-09-14

Stoll, Robert L.

Compositions

Preservative agents

Anti-corrosion

252321, B01D 1904, C09K 300

Patent

active

052445992

ABSTRACT:
A defoamer composition comprising (A) an organopolysiloxane containing an oxyalkylene group having an appropriate hydrophilic-hydrophobic balance, (B) another organopolysiloxane containing an oxyalkylene group serving as a surface active agent for component (C), (C) a dimethylpolysiloxane for retaining defoaming power, and (D) a silica filler can maintain defoaming power for a long time, for example, when it is added to a developer for exposed photosensitive resin which is subject to shearing stresses in the wash-out step.

REFERENCES:
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Derwent Abstract, AN 81-86118D/47 (corresponding to J56-129013).
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Patent Abstracts of Japan, JP 57-180470, vol. 7, No. 22, pp. 113 C 148.
Patent Abstracts of Japan, JP 56-139107, vol. 6, No. 15, pp. 54 C 89.
Patent Abstracts of Japan, JP 55-161850, vol. 5, No. 35, pp. 120 C 46.
Patent Abstracts of Japan, JP 53-34853, vol. 2, No. 76.

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