中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

24 records (took 0.013 seconds)

    Organomercaptomethyl-silicon compounds and production
    11.
    发明授权
    Organomercaptomethyl-silicon compounds and production 失效
    有机巯基甲基硅化合物和生产

    公开(公告)号：US3345393A

    公开(公告)日：1967-10-03

    申请号：US28690963

    申请日：1963-06-11

    Applicant: BAYER AG

    Inventor： WALTER SIMMLER ,  HANS NIEDERPRUM

    IPC: C07F7/08 ,  C07F7/18 ,  C08G77/00 ,  C08G77/28 ,  C08G77/392

    CPC classification number: C08G77/00 ,  C07F7/0834 ,  C07F7/0856 ,  C07F7/0889 ,  C08G77/392 ,  C10M3/00 ,  C10M2227/04 ,  C10M2229/053 ,  C10N2220/02

    Abstract: 1,054,032. Organomercaptomethyl silicon compounds. FARBENFABRIKEN BAYER A.G. June 18, 1963 [June 30, 1962], No. 24206/63. Headings C3S and C3T. Organomercaptomethyl silicon compounds are prepared by the reaction of (1 )(a) an organopolysiloxane, R n SiO 4-n , where n is 1-3 and at 2 least one of the siloxane units has the formula BrCH 2 -Si(CH 3 ) m O 3-m /2 X 3-m , where m is 1 or 2 and X is chlorine or a hydrolysable alkoxy group, with (2) a mercaptan, which may be substituted by -OH, or a thiophenol, in the presence of at least an equivalent of a tertiarynitrogen base. The invention also comprises the novel compounds 1,3-di-(n-butylmercaptomethyl) - 1,1,3,3 - tetra - methyldisilane, 1,3- di - (phenylmercaptomethyl)- 1,1,3,3 - tetramethyldisilane, α,# - di - (# 1 - hydroxy - ethylmercaptomethyl) - dodeca - (dimethylsilane), 2,2 - dimethyl - 2 - sila - 1,4 - oxathiane, the bromide of 2,2,6,6 - tetramethyl - 2,6 - disila- 4 - (# - hydroxyethyl) - 1,4 - oxathiane and compounds of the formulµ where the value of each of a, b and c approximates to 7, their sum total being 21 and compound II having a refractive index of 1-4491. The reaction is effected, normally with heating, by the addition of the bromomethyl silicon compound to a mixture of the mercaptan and base, or vice versa. Either or both components may be diluted with an inert solvent, e.g. benzene or its homologues. The reaction of a #-hydroxyl substituted mercaptan with a bromomethyl silane of the above formula, where X is alkoxy, proceeds with elimination of the appropriate alcohol and formation of a six-membered heterocyclic ring, e.g. #-hydroxyethylmercaptan and dimethyl-(bromomethyl)- ethoxy silane yield 2,2-dimethyl-2-sila-1,4-oxathiane. If the ethoxy silane is replaced by dimethyl - (bromomethyl) - chloro - silane the reaction yields 1,4-dithiane and a sulphonium salt, the bromide of 2,2,6,6-tetramethyl-2,6- disila - 4 - (# - hydroxyethyl) - 1,4 - oxathiane; this oxthiane derivative can also be obtained, by the present process, from 1,3-di-(bromomethyl)- 1,1,3,3 - tetra - methyldisilane and # - hydroxyethyl mercaptan. If the hydroxyl group of an -OH-substituted mercaptan is further from the S atom than #, the reaction product is a linear polymer. Examples describe the preparation of the novel compounds specified above.

    Process for the production of ethers of hydroxymethyl polymethyl siloxanes
    13.
    发明授权
    Process for the production of ethers of hydroxymethyl polymethyl siloxanes 失效
    制备羟甲基聚甲基硅氧烷的醚的方法

    公开(公告)号：US3297735A

    公开(公告)日：1967-01-10

    申请号：US35155964

    申请日：1964-03-12

    Applicant: BAYER AG

    Inventor： WALTER SIMMLER

    IPC: C07F7/08 ,  C08G77/00 ,  C08G77/38

    CPC classification number: C07F7/0852 ,  C07F7/0889 ,  C08G77/00 ,  C08G77/38

    Abstract: Methyl(organo-oxymethyl)siloxanes are produced by a process which comprises reacting at a temperature above 50 DEG C. an aliphatic or aromatic hydroxy-compound with a bromine-substituted methylpolysiloxane of the general formula:- wherein X stands for a radical R or the radical Br-CH2-and each R stands for methyl or a recurring structural unit of the general formula:- (the siloxane groups recurring as often as desired until the linear or branched chains terminate in R=CH3), and a tertiary nitrogen base, using for each gram-atom of bromine at least 1 gram-equivalent each of the hydroxy-compound and the nitrogen base, and conducting the reaction in such a manner that the nitrogen base is available to the bromine compound only in the presence of the hydroxy-compound. The hydroxy-compounds specified are monohydric or polyhydric alcohols, monohydric or polyhydric phenols, ether alcohols, polyalkylene glycols, polyalkylene glycol monoalkyl ethers, glycol monoesters and esters of aliphatic or aromatic hydroxycarboxylic acids. Many examples are given. The products of the invention are useful as heat resistant surface-active agents and as intermediates for modifying oils, elastomers and resins of organopolysiloxanes.

Patent Agency Ranking