Storage-stable silicone compositions

Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – At least one aryl ring which is part of a fused or bridged...

Reexamination Certificate

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Details

C524S492000, C524S493000, C525S477000, C525S478000

Reexamination Certificate

active

07371797

ABSTRACT:
Silicone compositions containing:(A) 100 parts by weight of organopolysiloxane(s) having an OH content, based on Si-bonded OH groups, of 1 to 100 weight ppm; and(B) 1-200 parts by weight of filler(s) having a specific surface area of at least 50 m2/g,exhibit surprising stability and are useful for preparing numerous compositions where a stable viscosity is desirable.

REFERENCES:
patent: 3839388 (1974-10-01), Nitzsche et al.
patent: 3996188 (1976-12-01), Laur
patent: 4008198 (1977-02-01), Krohberger et al.
patent: 4013611 (1977-03-01), Hechtl et al.
patent: 4104351 (1978-08-01), Blizzard et al.
patent: 4725643 (1988-02-01), Burkhardt
patent: 4835237 (1989-05-01), Burkhardt et al.
patent: 4975510 (1990-12-01), Wegehaupt et al.
patent: 5198171 (1993-03-01), Kasahara et al.
patent: 5408025 (1995-04-01), Thompson et al.
patent: 5457220 (1995-10-01), Razzano
patent: 5534608 (1996-07-01), Thompson et al.
patent: 2003/0114571 (2003-06-01), Pan
patent: 3 839 900 (1990-05-01), None
patent: 0 285 091 (1988-10-01), None
patent: 0 319 977 (1989-06-01), None
patent: 0 208 285 (1993-04-01), None
patent: 0 798 342 (1997-10-01), None
patent: 0 994 159 (2000-04-01), None
patent: 1 077 226 (2001-02-01), None
patent: 2002-338812 (2000-11-01), None
Abstract for the article entitled “The Influence of Filler Morpohology and Surface Hydroxyls on Crepe-Hardening of Uncured Silicone Elastomers” authored by Osaheni et al., and published in Macromolecular Symposia, 2001, 169(1), 261-268.
English Derwent Abstract AN 1990-172169[23] corresp. to DE 3 839 900, May 1990.
English Abstract corresponding to EP 1 077 226 A1, Feb. 2001.
English Derwent Abstract AN 2000-319924[28] corresp. to EP 0 994 159 A1, Apr. 2000.

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