Preformed compositions in shaped form

Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From sulfur-containing reactant

Reexamination Certificate

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C528S374000, C528S378000, C525S263000, C525S261000, C525S328500, C525S330900, C525S535000

Reexamination Certificate

active

07067612

ABSTRACT:
Preformed compositions comprising sulfur-containing polymers in shaped form and the use of preformed compositions in shaped form to seal apertures. In certain embodiments, the preformed compositions comprise a sulfur-containing polymer and a blend of fillers wherein the blend comprises substantially equal amounts of mica and polyamide.

REFERENCES:
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patent: 2466963 (1949-04-01), Patrick et al.
patent: 3499863 (1970-03-01), Kulch
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patent: 6372849 (2002-04-01), DeMoss et al.
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patent: 6485806 (2002-11-01), Tateyama et al.
patent: 6486297 (2002-11-01), Zook et al.
patent: 02227476 (1990-09-01), None
patent: 09235463 (1996-03-01), None
Encyclopedia of Chemical Technology, (Kirk-Othmer), vol. 13, John Wiley & Sons, 1967, pp. 398-424.
Fettes et al., “Polysulfide Polymers,”Industrial and Engineering Chemistry, vol. 42, No. 11, Nov. 1950, pp. 2217-2223.

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