BIOLOGICALLY DEGRADABLE POLYMERS, PROCESSES FOR MANUFACTURING THE SAME AND THE USE THEREOF FOR PRODUCING BIODEGRADABLE MOULDED ARTICLES

    公开(公告)号:CA2209495A1

    公开(公告)日:1996-07-18

    申请号:CA2209495

    申请日:1995-06-27

    Applicant: BASF AG

    Abstract: The invention concerns biologically degradable polyester amides P1 obtainable through reaction of a mixture consisting essentially of the following: (a1) a mixture consisting essentially of: 35-95 mol % adipic acid or ester-forming derivatives thereof or mixtures thereof, 5-65 mol % terephthalic acid or esterforming derivatives thereof or mixtures thereof, and 0-5 mol % a compound containing sulphonate groups (the sum of the individual molar percentages is 100); (a2) a mixture consisting essentially of: (a21) 99.5-0.5 mol % a dihydroxy compound chosen from the group comprising C2-C6 alkane diols and C5C10 cycloalkane diols, (a22) 0.5-99.5 mol % an amino C2-C12 alkanol or an amino-C5-C10 cycloalkanol, (a23) 0-50 mol % a diamino C1-C8 alkane; and (a24) 0-50 mol % a 2,2'-bisoxazoline of general formula (I), in which R1 is a single bond, a (CH2)q-alkylene group in which q = 2, 3 or 4, or a phenylene group (the sum of the individual molar percentages is 100 and the molar ratio of a1 to a2 is in the range 0.4:1 - 1.5:1). The polyester amides P1 will have a molecular weight (Mn) in the range 4000-40,000 g/mol, a viscosity number in the range 30-350 g/ml (measured in o-dichlorobenzene/phenol (weight ratio 50/50) at a concentration of 0.5 wt.% polyester amide P1 at a temperature of 25 ~C) and a melting point in the range 50-220 ~C; and a quantity of a compound D equivalent to 0-5 mol % of the molar quantity of components (a1) must also be used for the production of the polyester amides P1, said compound D having at least three groups capable of ester formation. The invention also concerns other biologically degradable polymers and thermoplastic moulding materials, processes for manufacturing the same, the use thereof for producing biologically degradable moulded articles and adhesives, and biologically degradable moulded articles, foams and blends with starch which can be obtained from the polymers or moulding materials according to the invention.

    DRY FILM RESIST AND PRODUCTION OF RESIST IMAGES

    公开(公告)号:CA1259218A

    公开(公告)日:1989-09-12

    申请号:CA498088

    申请日:1985-12-19

    Applicant: BASF AG

    Abstract: In dry film resists possessing a solid photopolymerizable resist layer, which is applied on a temporary base and can be developed with aqueous, in particular aqueous alkaline, media, and, if required, a cover sheet on the resist layer, the said resist layer is built from a homogeneous mixture of a) not less than 40% by weight of one or more oligomers which contain free carboxyl groups and more than two acryloyl and/or methacryloyl groups and are soluble or dispersible in aqueous alkaline solutions, b) from 1 to 35% by weight of one or more film-forming compatible polymers which are soluble in aqueous media, c) from 1 to 30% by weight of one or more compatible photopolymerizable monomers, d) from 0.001 to 10% by weight of one or more photoinitiators and e) from 0 to 30% by weight of further additives and/or assistants. Resist images are produced on a substrate by a process employing photopolymerizable resist layers of the type stated above.

    216.
    发明专利
    未知

    公开(公告)号:FI870614A

    公开(公告)日:1987-08-15

    申请号:FI870614

    申请日:1987-02-13

    Applicant: BASF AG

    Abstract: Mixtures which are curable by heating or irradiation with actinic light contain one or more cationically curable compounds, such as an epoxy, an olefinically unsaturated monomer, amino resin or phenolic resin, and as a cationically active curing catalyst one or more N-sulfonylamino-sulfonium salts of the formula such as N-p-toluenesulfonyl-N-methylaminodiphenylsulfonium hexafluorophosphate with or without quinones or peroxides are suitable, inter alia, for producing moldings, coatings, relief images and resist patterns.

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