Modified sulphur and product comprising modified sulphur as...

Details Modified sulphur and product comprising modified sulphur as... Modified sulphur and product comprising modified sulphur as...

2008-06-04

2010-11-16

Green, Anthony J (Department: 1793)

Compositions: coating or plastic

Coating or plastic compositions

Silicon containing other than solely as silicon dioxide or...

C106S287130, C106S287140, C106S481000, C106S725000, C106S806000

Reexamination Certificate

active

07833341

ABSTRACT:
The invention provides modified sulphur comprising sulphur and a polysulphide-containing organosilane in an amount of in the range of from 0.3 to 25 wt % based on the weight of sulphur, in which modified sulphur the combined amount of sulphur and polysulphide-containing organosilane make up in the range of from 90 to 100 wt % of the obtained modified sulphur and wherein the polysulphide-containing organosilane is of the general molecular formula (1): (X3Si)mH(2n+1−m)Cn-Sa-Cn′H(2n′+1−m′)(SiX′3)m′; wherein a is an integer in the range of from 2 to 8, X and X′ each are, independently, a hydrolysable group, n and n′ each are, independently, an integer in the range of from 1 to 4, and m and m′ each are, independently, an integer in the range of from 1 to (2n+1). The invention further provides a process for preparing such modified sulphur, a sulphur cement product comprising the modified sulphur and a process for preparing such.

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U.S. Appl. No. 11/608,062, Van Trier et al (Aug. 16, 2007).
International Search Report dated Dec. 11, 2008 International Application No. PCT/EP2008/056932.

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