32.
    发明专利
    未知

    公开(公告)号:DE2528288A1

    公开(公告)日:1976-01-08

    申请号:DE2528288

    申请日:1975-06-25

    Applicant: IBM

    Abstract: Electron beam positive resists are formed from terpolymers of (a) an alpha olefin, (b) sulfur dioxide, and (c) a compound selected from the group consisting of cyclopentene, bicycloheptene and methyl methacrylate. The terpolymers have the particular unexpected advantage of being resistant to cracking of the films.

    36.
    发明专利
    未知

    公开(公告)号:DE1906831A1

    公开(公告)日:1969-11-06

    申请号:DE1906831

    申请日:1969-02-12

    Applicant: IBM

    Abstract: 1,269,385. Electrophotographic element. INTERNATIONAL BUSINESS MACHINES CORP. 8 April, 1969 [8 April, 1968], No. 17992/69. Heading H1K. [Also in Divisions C2 and C3] An electrophotographic element includes a polymeric material of the formula wherein n >40 or wherein one of R 1 and R 2 is hydrogen, the other is C 1-4 alkyl and n>10. The polymers may be applied to a substrate of aluminium glass, paper, or plastics as an organic solvent solution or by melting the polymers and applying in the liquid state. Activators or electron acceptors, which increase the photoconductivity of the polymers, may be incorporated into the polymers.

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