Crosslinked and branched organopolysilanes

Details Crosslinked and branched organopolysilanes Crosslinked and branched organopolysilanes

2008-05-06

2008-05-06

Zimmer, Marc S. (Department: 1796)

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

From silicon reactant having at least one...

Reexamination Certificate

active

11176787

ABSTRACT:
The invention relates to a process for preparing crosslinked or branched organopolysilanes which contain at least one unit of the general formulae 1 and/or 2in-line-formulae description="In-line Formulae" end="lead"?RSi═,  (1)in-line-formulae description="In-line Formulae" end="tail"?in-line-formulae description="In-line Formulae" end="lead"?═Si═,  (2)in-line-formulae description="In-line Formulae" end="tail"?at least one unit of the general formula 3in-line-formulae description="In-line Formulae" end="lead"?R2Si═,  (3)in-line-formulae description="In-line Formulae" end="tail"?and optionally units of the general formula 4in-line-formulae description="In-line Formulae" end="lead"?R3Si—  (4)in-line-formulae description="In-line Formulae" end="tail"?in which silane(s) of the general formulae 1a and 2ain-line-formulae description="In-line Formulae" end="lead"?RSiX3,  (1a)in-line-formulae description="In-line Formulae" end="tail"?in-line-formulae description="In-line Formulae" end="lead"?SiX4,  (2a)in-line-formulae description="In-line Formulae" end="tail"?and 3ain-line-formulae description="In-line Formulae" end="lead"?R2SiX2,  (3a)in-line-formulae description="In-line Formulae" end="tail"?and optionally silane of the general formula 4ain-line-formulae description="In-line Formulae" end="lead"?R3SiX,  (4a)in-line-formulae description="In-line Formulae" end="tail"?where R is hydrocarbyl and X is halo,are reacted with elemental metal, the addition of the reactants being such that the silane of the general formula 3a in the reaction with elemental metal contains at most 2 mol % of silane which is selected from silanes of the general formulae 1a and 2a, and to the organopolysilanes obtainable by the process.

REFERENCES:
patent: 4921321 (1990-05-01), Weidman
patent: 5641849 (1997-06-01), Nishida et al.
patent: 5905139 (1999-05-01), Mori et al.
patent: 2002/0177660 (2002-11-01), Imoto et al.
patent: 2004/0005109 (2004-01-01), Tsushima et al.
patent: 0 949 289 (1999-10-01), None
patent: 5-25282 (1993-02-01), None
patent: 7-113010 (1995-05-01), None
patent: 2003-277507 (2003-10-01), None
Translation of paragraph 54 of JP 2003-277507 prepared by USPTO translation office.
Patent Abstract of Japan corresponding to JP 10237177, Sep. 8, 1998.
Patent Abstract of Japan corresponding to JP 07113010, May 2, 1995.

Affiliated with

Also associated with

Rating

Crosslinked and branched organopolysilanes does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Crosslinked and branched organopolysilanes, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Crosslinked and branched organopolysilanes will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3904489