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    5.
    发明专利
    未知

    公开(公告)号：DE2848559A1

    公开(公告)日：1980-05-14

    申请号：DE2848559

    申请日：1978-11-09

    Applicant: DEGUSSA

    Inventor： WOLFF SIEGFRIED DIPL CHEM ,  TAN EWE-HONG

    IPC: C08J3/24 ,  B29C33/02 ,  B29C35/00 ,  C08K3/00 ,  C08K3/04 ,  C08K3/06 ,  C08K3/34 ,  C08K5/548 ,  C08K13/02 ,  C08L1/00 ,  C08L7/00 ,  C08L9/00 ,  C08L21/00 ,  C08L23/00 ,  C08L27/00 ,  C08L33/00 ,  C08L33/02 ,  C08L101/00 ,  C08K5/44

    Abstract: Mouldable and vulcanisable rubber mixtures are made containing a rubber (A) which still contains double bonds and which is cross-linkable by means of sulphur and a vulcanization accelerator or a mixture of rubber (A) with a different rubber (B), 0.2 to 10 parts of sulphur, 0.2 to 10 parts of a vulcanization accelerator and 1.0 to 10 parts of a bis-(alkoxysilylalkyl)polysulfide. There can also be present a silicate filler and/or a carbon black filler of rubber. The rubber mixtures have the silane, vulcanization accelerator and sulphur, calculated as S8 present in a molar ratio which causes the rubber mixture to have a reversion R=O (+/-5%) resulting from the cross-linking isotherm at the vulcanization temperature where the reversion R is calculated according to Formula II in which Dmax is the maximum vulcameter moment of rotation Dmin is the minimum vulcameter moment of rotation D(max+60 min) is the vulcameter moment of rotation measured 60 minutes after the appearance of the maximum moment of rotation. There is also disclosed the process of vulcanizing the above-mentioned rubber mixtures or moulding compositions and forming vehicle tires using the rubber mixtures.

    6.
    发明专利
    未知

    公开(公告)号：DE2401056A1

    公开(公告)日：1975-07-31

    申请号：DE2401056

    申请日：1974-01-10

    Applicant: DEGUSSA

    Inventor： WOLFF SIEGFRIED DIPL CHEM ,  POCHERT JOHANNES ,  THURN FRIEDRICH DR ,  BURMESTER KURT

    IPC: C08L7/00 ,  B29C35/00 ,  B29C55/00 ,  B29C65/00 ,  B29C65/70 ,  C08J5/10 ,  C08K3/00 ,  C08K5/00 ,  C08K5/548 ,  C08K7/00 ,  C08L21/00 ,  C08L61/10 ,  C08L67/00 ,  C08L77/00 ,  C08J5/04

    Abstract: Silica containing mixtures for the improvement of the adhesion of vulcanizable mixtures of natural and/or synthetic rubber to reinforcing fillers or supports of textile and/or metallic fabrics after the vulcanization are prepared that substantially consist of (A) active synthetically produced silica or silicates having a specific surface area according to the BET procedure of about 50 to 500 m2/g and an average primary particle size of from about 5 to 100 and at least one of (B) phenolic resin or aminoplast forming components, namely on the one hand phenols and/or amines and on the other hand aldehydes or aldehyde donors, and/or at least (C) one organosilane which can be a bisalkoxysilylalkyl-oligosulfide of the formula I. Z-Alk-Sn-Alk-Z, in which Z stands for the group R1 R1 R2 ¦ ¦ ¦ (a)-Si-R1, (b)-Si-R2 or (c)-Si-R2 ¦ ¦ ¦ R

    8.
    发明专利
    未知

    公开(公告)号：DE2935454A1

    公开(公告)日：1981-03-19

    申请号：DE2935454

    申请日：1979-09-01

    Applicant: DEGUSSA

    Inventor： BUDER WOLFGANG DIPL CHEM DR ,  WOLFF SIEGFRIED DIPL CHEM ,  KLEINSCHMIT PETER DR

    IPC: C07F7/18

    Abstract: There are prepared nitrogen containing alkoxysilanes of the formula (RO)3-n(CH3)nSi(CH2)mNHCON3 in which R is an alkyl group having 1 to 3 carbon atoms, n is 0, 1 or 2 and m is 1, 2 or 3 by a process comprising dissolving in an inert solvent an isocyanate group containing silane of the formula (RO)3-n(CH3)nSi(CH2)mN=C=O in which R, n and m are as defined above and reacting the silane with a water free hydrogen nitride or with hydrogen halide and an alkali metal-alkaline earth metal-, or ammonium azide at a temperature between 0 DEG C. and the boiling point of the inert solvent. The compounds are useful in making phosphinimines.

    9.
    发明专利
    未知

    公开(公告)号：DE2933346A1

    公开(公告)日：1981-02-26

    申请号：DE2933346

    申请日：1979-08-17

    Applicant: DEGUSSA

    Inventor： WOLFF SIEGFRIED DIPL CHEM ,  ROTHBUEHR LOTHAR DIPL ING DR ,  GREWATTA HEINZ

    IPC: C08K3/00 ,  C04B20/10 ,  C08K5/00 ,  C08K5/5419 ,  C08K9/06 ,  C08L1/00 ,  C08L7/00 ,  C08L21/00 ,  C08L23/00 ,  C08L27/00 ,  C08L33/00 ,  C08L33/02 ,  C08L101/00 ,  C08K3/04 ,  C08K3/26 ,  C08K3/34 ,  C08K5/54 ,  C08L9/00

    Abstract: The invention relates to a silane/filler preparation, consisting essentially of from 5 to 70% by weight of at least one silane corresponding to the following formula Xp-CmH2m+1-pSiRn1(OR)3-n, I in which X=a halogen atom, preferably chlorine or bromine, p=1 or 2, m=1 to 5, R1=a C1-C5 alkyl group, C5-C8-cycloalkyl group or a phenyl group, R=a C1-C5-alkyl group, a C5-C8-cycloalkyl group, a phenyl group, a benzyl group or a C1-C5-alkoxy-C1-C5-alkyl group, and n=0, 1 or 2, and-respectively balanced to 100%-from 95 to 30% by weight of at lesat one inorganic filler, preferably carbon black and silicate fillers as, e.g., silica. There is also disclosed a process for the production of the silane/filler preparation and its use in optionally cross-linkable polymeric moulding compositions or vulcanizable or cross-linkable rubber moulding compositions such as sulphur-vulcanizable moulding compositions based on natural rubber and/or synthetic rubber.

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