PRECERAMIC ACETYLENIC POLYSILANES
    53.
    发明专利

    公开(公告)号:CA1336100C

    公开(公告)日:1995-06-27

    申请号:CA616742

    申请日:1993-09-02

    Applicant: DOW CORNING

    Abstract: Preceramic acetylenic polysilanes are described which contain -(CH2)wC?CR' groups attached to silicon where w is an integer from 0 to 3 and where R' is hydrogen, an alkyl radical containing 1 to 6 carbon atoms, a phenyl radical, or an -SiR'''3 radical wherein R''' is an alkyl radical containing 1 to 4 carbon atoms. The acetylenic polysilanes are prepared by reacting chlorine- or bromine-containing polysilanes with either a Grignard reagent of general formula R'C?C(CH2)wMgX' where w is an integer from 0 to 3 and X' is chlorine, bromine, or iodine or an organolithium compound of general formula R'C?C(CH2)wLi where w is an integer from 0 to 3. The acetylenic polysilanes can be converted to ceramic materials by pyrolysis at elevated temperatures under an inert atmosphere.

    PRECERAMIC ACETYLENIC POLYSILANES
    55.
    发明专利

    公开(公告)号:CA1328656C

    公开(公告)日:1994-04-19

    申请号:CA572924

    申请日:1988-07-25

    Applicant: DOW CORNING

    Abstract: PRECERAMIC ACETYLENIC POLYSILANES Preceramic acetylenic polysilanes are described which contain -(CH2)wC?CR' groups attached to silicon where w is an integer from 0 to 3 and where R' is hydrogen, an alkyl radical containing 1 to 6 carbon atoms, a phenyl radical, or an -SiR'''3 radical wherein R''' is an alkyl radical containing 1 to 4 carbon atoms. The acetylenic polysilanes are prepared by reacting chlorine- or bromine-containing polysilanes with either a Grignard reagent of general formula R'C?C(CH2)wMgX' where w is an integer from 0 to 3 and X' is chlorine, bromine, or iodine or an organolithium compound of general formula R'C?C(CH2)wLi where w is an integer from 0 to 3. The acetylenic polysilanes can be converted to ceramic materials by pyrolysis at elevated temperatures under an inert atmosphere.

    58.
    发明专利
    未知

    公开(公告)号:DE3575306D1

    公开(公告)日:1990-02-15

    申请号:DE3575306

    申请日:1985-08-14

    Applicant: DOW CORNING

    Abstract: A simplified method of manufacture for platinum (O) alkyne complexes is disclosed, as well as novel platinum (0) alkyne complexes per se. The complexes are made by reacting platinum-vinylsiloxane complexes with alkynes. The complexes are used in hydrosilylation, hydrogenation, isomerization and oligomerization reactions. Curable silicones using these platinum (0) alkyne complexes as curing catalysts are also disclosed.

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