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    URETHANE-MODIFIED NOVOLAK FOR IMPROVING ADHESIVITY OF STEEL CORD AND RIGIDITY OF VULCANIZED RUBBER BLEND
    2.
    发明专利
    URETHANE-MODIFIED NOVOLAK FOR IMPROVING ADHESIVITY OF STEEL CORD AND RIGIDITY OF VULCANIZED RUBBER BLEND 失效

    公开(公告)号：JPH10120748A

    公开(公告)日：1998-05-12

    申请号：JP24131497

    申请日：1997-09-05

    Applicant: HOECHST AG

    Inventor： BURKHART THOMAS ,  WALLENWEIN SIEGFRIED ,  BRINDOEPKE GERHARD ,  WALZ GERD

    IPC: C08G8/12 ,  C08G14/067 ,  C08G16/00 ,  C08G18/06 ,  C08J5/12

    Abstract: PROBLEM TO BE SOLVED: To obtain a urethane-modified novolak capable of improving the bonding strength between a rubber and a reinforcing material and giving a reinforced material having improved rigidity without deteriorating the health of worker by reacting a phenol with an oxo compound and a urethane in the presence of an acidic catalyst under specific condition. SOLUTION: This urethane-modified novolak free from free phenol used as a raw material is produced by reacting (A) a monohydric or polyhydric phenol such as phenol with (B) an oxo compound (aldehyde or ketone) such as formaldehyde together with (C) a urethane such as a 1-20C alkyl or alkylaryl urethane derived from an alcohol in the presence of (D) an acidic catalyst such as sulfuric acid at a high temperature (60-200 deg.C). Preferably, the compounding ratio of A/B is 1/(0.3-0.95) and that of A/C is 1/(0.005-1).

    PROCESS FOR THE PREPARATION OF 2-OXO-1,3-DIOXOLANES
    9.
    发明专利
    PROCESS FOR THE PREPARATION OF 2-OXO-1,3-DIOXOLANES 未知

    公开(公告)号：CA1335736C

    公开(公告)日：1995-05-30

    申请号：CA527001

    申请日：1987-01-09

    Applicant: HOECHST AG

    Inventor： BRINDOEPKE GERHARD

    IPC: B05D7/24 ,  B01J27/08 ,  B01J31/06 ,  C07B61/00 ,  C07D317/36 ,  C08G18/65 ,  C08G71/00 ,  C07C317/36 ,  C08G18/44

    Abstract: A process for the preparation of 2-oxo-1,3-dioxolanes by reaction of epoxides with carbon dioxide in the presence of alkali iodides wherein at least one epoxy compound is reacted in the presence or absence of inert solvent either with a combination of A) at least one alkali iodide and B) at least one compound of the group a) polyol and b) an ether or polyether or, if the epoxy compound already has the structural features of the compounds Ba) and Bb), with the alkali iodide A) alone, at temperatures from 40 to 180.degree.C while introducing carbon dioxide at normal pressure or at slightly increased pressure, to form the corresponding organic carbonates. The 2-oxo-1,3-dioxol-anes obtained are used for the preparation of synthetic resins, containing urethane groups, in the form of coatings or molded bodies.

    PROCESS FOR THE PREPARATION OF 2-OXO-1,3-DIOXOLANES
    10.
    发明专利
    PROCESS FOR THE PREPARATION OF 2-OXO-1,3-DIOXOLANES 未知

    公开(公告)号：CA1334851C

    公开(公告)日：1995-03-21

    申请号：CA516014

    申请日：1986-08-15

    Applicant: HOECHST AG

    Inventor： BRINDOEPKE GERHARD ,  MARTEN MANFRED

    IPC: C07D317/36 ,  C07D317/38 ,  C08G59/00

    Abstract: Process for the preparation of 2-oxo-1,3-dioxolanes by reaction of epoxides with carbon dioxide in the presence of a catalyst, wherein at least one epoxy compound is mixed with at least one catalyst in the presence or absence of an inert solvent and is reacted at temperatures from 40 to 180.degree.C while introducing carbon dioxide at normal pressure or slightly increased pressure to form the corresponding organic carbonates. The 2-oxo-1,3-dioxo-lanes obtained are used to prepare synthetic resins containing urethane groups in the form of coatings and molded bodies.

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