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    55.
    发明专利
    未知

    公开(公告)号：SE304377B

    公开(公告)日：1968-09-23

    申请号：SE867162

    申请日：1962-08-08

    Applicant: BAYER AG

    Inventor： SUELING C ,  LOGEMANN H ,  ROOS E

    IPC: C08K5/37 ,  C08F45/60

    Abstract: Solutions in organic solvents of polymers containing at least 80% by weight of combined acrylonitrile are stabilized by means of mercaptotriazoles of the formula: in which R is a hydrogen atom or an alkyl, aryl or heterocyclic radical, e.g. 3-mercapto-1, 2, 4-triazole and derivatives thereof substituted in the 5-position by methyl, ethyl, phenyl and furoyl groups. The acrylonitrile polymers may be homopolymers or copolymers with acrylic and methacrylic acids and their esters and amides, vinyl acetate, styrene, styrene sulphonic acid, vinyl pyridine and methyl vinyl ketone. As solvents for the polymers there are specified dimethyl formamide, dimethyl acetamide and ethylene glycol carbonate.

    57.
    发明专利
    未知

    公开(公告)号：BR8102367A

    公开(公告)日：1981-12-22

    申请号：BR8102367

    申请日：1981-04-15

    Applicant: BAYER AG

    Inventor： EHOLZER U ,  SCHUBART R ,  ROOS E ,  KEMPERMANN T

    IPC: C08L7/00 ,  C08K3/06 ,  C08K5/14 ,  C08K5/36 ,  C08K5/38 ,  C08K5/41 ,  C08K5/47 ,  C08L21/00 ,  C08L33/00 ,  C08L33/02 ,  C08C19/20

    Abstract: A vulcanization system consisting of (a) 20-50 parts by weight of sulphur or 20-50 parts by weight of a sulphur donor, (b) 20-50 parts by weight of an accelerator of the mercapto or sulphenamide group, (c) 0-10 parts by weight of a conventional accelerator additive, and (d) 20-50 parts by weight of a compound corresponding to the general formula (i): (I) wherein R1 to R5 are identical or different and denote hydrogen, halogen, nitro, cyano, CF3, CCl3, carboxyl, an alkoxy group containing 1-4 C-atoms in the alkyl part, or a C1-C4 alkyl group but the groups R1-R5 must not all be hydrogen; x represents 1-4, preferably 2-3, y represents 0 or 1, and Z denotes divalent groups such as C1-C12 alkylene, C4-C12 cycloalkylene, C6-C10 arylene or C8-C12 arylalkylene, and R6 denotes the group corresponding to the formula: wherein R1-R5 have the meaning indicated above and may all be hydrogen; C1-C12 alkyl or a C4-C12 cycloalkylene optionally substituted by OH and/or alkoxy with 1-4 C-atoms in the alkoxy group; benzyl or trichloromethyl, whereby the sum of the components (a)-(d) is 100 can be used for vulcanizing natural or synthetic rubber.

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