Preparation of sulfide chain-bearing organosilicon compounds

Details Preparation of sulfide chain-bearing organosilicon compounds Preparation of sulfide chain-bearing organosilicon compounds

2007-10-30

2007-10-30

Barts, Samuel (Department: 1621)

Organic compounds -- part of the class 532-570 series

Organic compounds

Silicon containing

Reexamination Certificate

active

11529591

ABSTRACT:
A sulfide chain-bearing organosilicon compound having the average compositional formula:in-line-formulae description="In-line Formulae" end="lead"?(R1O)(3-p)(R2)pSi—R3—S—(R4—Sm)q—R4—S—R3—Si(OR1)(3-p)(R2)pin-line-formulae description="In-line Formulae" end="tail"?is prepared at low costs and in high yields by reacting a halogen-terminated organosilicon compound having the formula: (R1O)(3-p)(R2)pSi—R3—S—R4—X, sulfur, and optionally a halide having the formula: X—R4—X with an aqueous solution or dispersion of a sulfide M2S or hydrate thereof in the presence of a phase transfer catalyst. R1and R2are monovalent C1-4hydrocarbon groups, R3and R4are divalent C1-10hydrocarbon groups, m has an average value of 2-6, p is 0, 1 or 2, q is 1, 2 or 3, X is halogen, and M is ammonium or alkali metal.

REFERENCES:
patent: 5405985 (1995-04-01), Parker et al.
patent: 5468893 (1995-11-01), Parker et al.
patent: 5583245 (1996-12-01), Parker et al.
patent: 6384255 (2002-05-01), Backer et al.
patent: 6448426 (2002-09-01), Backer et al.
patent: 2003/0236424 (2003-12-01), Yanagisawa et al.
patent: 2004-18511 (2004-01-01), None
patent: 2004-521945 (2004-07-01), None
patent: 2004-521946 (2004-07-01), None

Affiliated with

Also associated with

Rating

Preparation of sulfide chain-bearing organosilicon compounds does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Preparation of sulfide chain-bearing organosilicon compounds, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Preparation of sulfide chain-bearing organosilicon compounds will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3832880