72.
    发明专利
    未知

    公开(公告)号:DE3869799D1

    公开(公告)日:1992-05-14

    申请号:DE3869799

    申请日:1988-01-22

    Applicant: BASF AG

    Abstract: New copolymers (I) contain: (a) 5-50 (mole)% alpha-(o-nitro(het)aryl)-(ar)alkyl unsatd. carboxylate ester(s) of formula (II), where A = an opt. substd. 5-14 membered aromatic or hetero-aromatic ring system; X = H, 1-8C alkyl, opt. substd. aryl or aralkyl; Y = a 2-6C ethylenically unsatd. gp.; (b) 95-50% copolymerisable olefinically unsatd. organic cpd(s). (III) contg. Si; (c) 0-20% copolymerisable 3-6C olefinically unsatd. carboxylic acid(s) (IV) and (d) 0-25% other olefinically unsatd. organic comonomer(s) (V) forming homopolymers transparent at 250-400 nm, so that (I) have a Si content of over 6 wt.%. (II) can be prepd. by reacting the acid chloride with o-nitrocarbinols or by direct acid-catalysed esterification (see e.g. DE 2150691)

    76.
    发明专利
    未知

    公开(公告)号:DE3827567A1

    公开(公告)日:1990-02-22

    申请号:DE3827567

    申请日:1988-08-13

    Applicant: BASF AG

    Abstract: The invention relates to an aqueous developer solution for positively acting photoresists and also to a development process. The water-soluble basic compound contained in the developer solution is a compound of the general formula (I): … … where R to R are mutually identical or different and are H, OH, hydroxyalkyl, alkoxy or alkyl. … They are suitable for the development of positively acting photoresists.

    77.
    发明专利
    未知

    公开(公告)号:DE3725134A1

    公开(公告)日:1989-02-09

    申请号:DE3725134

    申请日:1987-07-29

    Applicant: BASF AG

    Abstract: A recording material which has… a) a dimensionally stable, optically transparent substrate which is composed of plastics and has a structured surface,… b) an intermediate layer which is present thereon, is insoluble in organic solvents and acts as a diffusion barrier with respect to the latter and, on said intermediate layer,… c) an amorphous, thermally alterable recording layer which can be produced by application from a solution and drying and contains dyes, and the intermediate layer (b) of which… b1) is 5 to 95 nm thick and, based in each case on (b), consists of… b2) 88 to 99.5% by weight of oxides and/or hydrated oxides of one or more of the elements from the group consisting of titanium, zirconium, hafnium, thorium, vanadium, niobium, tantalum, tungsten, aluminium, gallium, indium, silicon, germanium and tin and of… b3) 0.5 to 12% by weight of hydrocarbon radicals, and… b4) can be produced by dissolving an alkoxide or several alkoxides of one or more of the above-mentioned elements in a polar liquid medium essentially containing C1- to C6-alkanols, applying this solution to the surface of the substrate (a) and heating the moist layer obtained in this manner in the presence of water at 50 to 120 DEG C for 5 minutes to 2 hours, and a process for the production of the recording material.

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