Flame-resistant intumescent mixtures

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

C524S401000, C524S430000, C523S179000

Reexamination Certificate

active

07087670

ABSTRACT:
The invention relates to mixtures containinga) a polymer which may be produced from ethylene, vinyl acetate and optionally further monomers having a vinyl acetate content in the range of 40 to 85 wt. %,b) at least one expandable graphite which may be acidic or neutralised,c) at least one mineral filler,d) optionally further additives,a process for producing them, their use for the production of shaped articles of any type, and flame-retardant intumescent mixtures containing a mixture according to the invention and, furthermore, shaped articles containing a mixture according to the invention.

REFERENCES:
patent: 3574644 (1971-04-01), Olstowski et al.
patent: 5719199 (1998-02-01), Wallace et al.
patent: 6410122 (2002-06-01), Tono et al.
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patent: 03041163 (1991-02-01), None
patent: 03041164 (1991-02-01), None
patent: 07068362 (1995-07-01), None
patent: 95103948 (1995-11-01), None
patent: 9-176579 (1997-07-01), None
patent: 10-36572 (1998-02-01), None
**Database WPI Section Ch, Week 199114 Derwent Publications Ltd., London, GB; AN 1991-097794 XP002180730 & JP 03 041164 A (Nippon Kasei KK), Feb. 21, 1991 Zusammenfassung.
**Database WPI Section Ch, Week 199737 Derwent Publications Ltd., London, GB; AN 1997-399689 XP002180731 & JP 09 176404 A (Sekisui Chem Ind Co Ltd), Jul. 8, 1997 Zusammenfassung.

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