13.
    发明专利
    未知

    公开(公告)号:DE2300371A1

    公开(公告)日:1974-07-25

    申请号:DE2300371

    申请日:1973-01-05

    Applicant: BASF AG

    Abstract: Laminates for the production of relief plates for flexographic printing, by imagewise exposure and washing out with a developer solution have, on a base optionally provided with an elastomeric layer, a photo-crosslinkable layer containing a photoinitiator and consisting of a polyurethane elastomer which has been prepared in a special manner from an aliphatic saturated polyesterglycol, an aliphatic diisocyanate, but-1-ene-3,4-diol and, if desired, another diol and which has a Shore A hardness of 30 to 90 DEG in the photo-crosslinked state, the elastomer being optionally mixed with a photo-crosslinked monomer.

    16.
    发明专利
    未知

    公开(公告)号:DE3604872A1

    公开(公告)日:1987-08-20

    申请号:DE3604872

    申请日:1986-02-15

    Applicant: BASF AG

    Abstract: In the process, a mixture of bismaleimide and aminophenol is heated in the presence of an amine as addition catalyst and in the presence of an inhibitor, vinyl or allyl monomers and, if desired, epoxy resins and peroxide initiators are added, and the mixture, as a melt, is applied to reinforcing fibres. The prepregs and semifinished products can be cured to form composite materials for the automotive and aerospace industries.

    20.
    发明专利
    未知

    公开(公告)号:DE3812323A1

    公开(公告)日:1989-10-26

    申请号:DE3812323

    申请日:1988-04-14

    Applicant: BASF AG

    Abstract: The invention relates to fibre composites consisting of prepreg layers which are bonded to one another by intermediate layers. The prepreg layers consist of laid webs impregnated with curable resins. The intermediate layers contain regions of flexible polymer films which cover 10 to 90% of the surface of the prepreg layers. The polymer films are applied as an aqueous dispersion to the prepreg layers, and the layers are pressed after removal of the water. The composites are suitable as structural components for the aerospace industry and in the automotive industry.

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