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    12.
    发明专利
    未知

    公开(公告)号：DE3005035A1

    公开(公告)日：1981-08-20

    申请号：DE3005035

    申请日：1980-02-11

    Applicant: BASF AG

    Inventor： LEHNER AUGUST ING GRAD ,  HARTMANN HEINRICH DIPL CHEM DR ,  HEIL GUENTER DIPL CHEM DR ,  LENZ WERNER DIPL CHEM DR ,  BUETHE INGOLF DIPL CHEM DR ,  BACHMANN RUDOLF DIPL CHEM DR

    IPC: C08G18/00 ,  C08G18/67

    Abstract: A process for the preparation of polymerizable, primarily linear thermoplastic polyurethane elastomers with acrylate side groups comprising reacting an organic polyisocyanate with a mixture of (a) an acrylate diol having a molecular weight of 146 to 3000, (b) an organic polyhydroxyl compound other than those of paragraph (a) having a molecular weight between 400 and 5000, and (c) a chain extender selected from the group consisting of diols, diamines, aminoalcohols, and triols, having molecular weights between 61 and 400, water, and mixtures thereof wherein the ratio of isocyanate to active hydrogen containing groups is from 0.8:1 to 1.2:1 and wherein 1.4 to 1.8 moles of organic polyisocyante, 0 to 15 moles of component (c) and 0.3 to 6 moles of component (a) are used per mole of component (b). The polymerizable polyurethane elastomers may be used for the manufacture of molded parts, laminates, adhesives, coatings, magnetic tapes, and other articles.

    15.
    发明专利
    未知

    公开(公告)号：DE2443786A1

    公开(公告)日：1976-04-01

    申请号：DE2443786

    申请日：1974-09-13

    Applicant: BASF AG

    Inventor： BARZYNSKI HELMUT DIPL CHEM DR ,  LENZ WERNER DIPL CHEM DR ,  WERTHER HEINZ-ULRICH DIPL CHEM ,  HARTMANN HEINRICH DIPL CHEM DR ,  LEHNER AUGUST ING GRAD ,  STUTZ HERBERT DIPL CHEM DR ,  HOFFMANN GERHARD DIPL CHEM DR

    IPC: C08F299/00 ,  C08F2/50 ,  C08F290/00 ,  C08F299/06 ,  C08G18/67 ,  G03F7/032 ,  G03F7/038 ,  G03F7/02

    Abstract: 1519059 Photo-crosslinkable polyurethane composition BASF AG 12 Sept 1975 [13 Sept 1974] 37561/75 Heading C3V A photo-crosslinkable composition comprises a photoinitiator and a mixture of the following materials in the proportions:-(A) from 40 to 80% by weight of an olefinically unsaturated isocyanate group-free polyurethane which has a molecular weight of from 400 to 10,000 and which has been manufactured by reaction of (A1) a polyester having a hydroxyl number of 100 to 300 and derived from a C2 to C8-saturated polyhydric aliphatic alcohol and a C4 to C8- saturated dicarboxylic acid, or an ester forming derivative of such dicarboxylic acid, at least 50 mole per cent of such polyester-forming materials being saturated aliphatic compounds with (A2) a C6 to C36-polyisocyanate and (A3) a monoacrylate or monomethacrylate of a C2 to C10- aliphatic diol and (B) from 60 to 20% by weight of a C6 to C8-N-vinyl lactam-monomer or a mixture of at least 20% by weight thereof with at least one comonomer, or with a reaction product prepared from (A2) and (A3). Examples are given in which (a) an adipic acid/phthalicanhydride/1,2 -propylene glycol/1,1,1-trimethylolpropane polyester is reacted with hexamethylene diisocyanate and 2-hydroxypropyl acrylate, the product being mixed with N- vinylpyrrolidone and benzoin methyl ether, applied to a substrate and exposed image-wise to UV light to form a relief printing plate; (b) as (a) except that a monomer mixture (B) of N - vinylpyrrolidone, 1 - hydroxypropyl acrylate, 2 - hydroxypropyl acrylate and acrylamide is used; (c) a polyester as in (a) is reacted with isophorone diisocyanate, 2-hydroxypropyl acrylate and, optionally, 1 - hydroxypropyl acrylate, mixed with N-vinylpyrrolidone or a mixture thereof with 2-hydroxypropylacrylate and acrylamide, and used as in (a), using benzoin isopropyl, or methyl ether as initiator.

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