PROCESS FOR PREPARING COPOLYMERS AND USE OF THE PRODUCTS OBTAINED

    公开(公告)号:CA1227595A

    公开(公告)日:1987-09-29

    申请号:CA394636

    申请日:1982-01-21

    Applicant: HOECHST AG

    Inventor: PLUM HELMUT

    Abstract: Process for preparing copolymers from esters of an unsaturated carboxylic acid with at least one other unsaturated monomer, characterized in that the following components are copolymerized in radical substance polymerization: A) 5 to 60 parts by weight of at least one diester of an .alpha.,.beta.-olefinically unsaturated dicarboxylic acid having 1 to 8 carbon atoms in the ester group, B) 10 to 70 parts by weight of at least one vinyl aromatic hydrocarbon having one vinyl group, C) 0 to 30 parts by weight of at least one glycidyl ester of an aliphatic saturated monocarboxylic acid branched in the .alpha.-position, D) 0 to 51 parts by weight of at least one ester or amide of an .alpha.,.beta.-olefinically unsaturated monocarboxylic acid or an anhydride of at least one .alpha.,.beta.-olefinically unsaturated dicarboxylic acid, E) 0 to 40 parts by weight of at least one .alpha.,.beta.-olefinically unsaturated monocarboxylic acid, the sum of components A) to E) being 100 parts by weight, whilst at least a part of component A) is at first introduced into the reaction vessel alone or in combination with at least a part of component C) and a mixture of component B) with at least one of components D) and E) being present and any remaining parts of components A) and/or C) is added in portions referred to hereinabove at a temperature range of between 140 and 200.degree.C together with a radical initiator, alone. or in conjunction with a regulator, and if component C) is present, at least an equimolar quantity of component E) is used; and the use of the products thus obtained as binders for the preparation of coating compositions.

    COPOLYMERISATION PROCESS
    14.
    发明专利

    公开(公告)号:AU7967282A

    公开(公告)日:1982-07-29

    申请号:AU7967282

    申请日:1982-01-20

    Applicant: HOECHST AG

    Inventor: PLUM HELMUT

    Abstract: Process for preparing copolymers from esters of an unsaturated carboxylic acid with at least one other unsaturated monomer, characterized in that the following components are copolymerized in radical substance polymerization: (A) 5 to 60 parts by weight of at least one diester of an alpha , beta -olefinically unsaturated dicarboxylic acid having 1 to 8 carbon atoms in the ester group, (B) 10 to 70 parts by weight of at least one vinyl aromatic hydrocarbon having one vinyl group, (C) 0 to 30 parts by weight of at least one glycidyl ester of an aliphatic saturated monocarboxylic acid branched in the alpha -position, (D) 0 to 50 parts by weight of at least one ester, amide and/or anhydride of an alpha , beta -olefinically unsaturated mono- and/or dicarboxylic acid, (E) 0 to 40 parts by weight of at least one alpha , beta -olefinically unsaturated monocarboxylic acid, the sum of components (A) to (E) being 100 parts by weight, whilst at least a part of component (A) is at first introduced into the reaction vessel alone or in combination with at least a part of component (C) and a mixture of component (B) with at least one of components (D) and (E) and any remaining parts of components (A) and/or (C) is added in batches at 140 DEG to 200 DEG C. together with a radical initiator, alone or in conjunction with a regulator, and if component (C) is present, at least an equimolar quantity of component (E) is used; and the use of the products thus obtained as binders for the preparation of coating compositions.

    AQUEOUS ELECTROPHORETIC ENAMEL COATING MATERIALS, WHICH CAN BE DEPOSITED AT THE CATHODE

    公开(公告)号:CA1327859C

    公开(公告)日:1994-03-15

    申请号:CA578680

    申请日:1988-09-28

    Abstract: An aqueous electrophoretic coating material, which can be deposited at the cathode and contains (A) 90 to 50% by weight, based on the total portion of synthetic resin vehicle, of one or several polycondensation, polymerization and/or polyaddition resins, the resin or, in the event that several resins are present, their mixture a) having a number average molecular weight (Mn) of 700 to 10,000 b) having 1.2 x 1023 to 21.7 x 1023 lateral or terminal double bonds per 1,000 g. corresponding to a hydrogenation iodine number of 5 to 90. c) optionally containing primary and/or secondary hydroxyl groups, corresponding to a hydroxyl number of 0 to 450 mg KOH/g of resin, and d) tertiary amino groups corresponding to an amine number of 30 to 450 mg KOH/g of resin. (B) 10 to 50% by weight of one or several cross linking agents, which are compounds with methane tricarboxylic acid amide units of the formula which contain, on the average, at least 2 groups with reactive hydrogens per molecule and are derived from a reaction product of a monoisocyanate or polyisocyanate with a malonic acid derivative, and C) 0 to 10% by weight of one or several capped diisocyanates and/or polyisocyanates, as well as its use.

    ELECTRODEPOSITABLE PREPARATIONS HAVING LOW ORGANIC SOLVENT CONTENT, AND PROCESSES FOR THE PREPARATION THEREOF

    公开(公告)号:CA1313283C

    公开(公告)日:1993-01-26

    申请号:CA528559

    申请日:1987-01-30

    Applicant: HOECHST AG

    Inventor: PLUM HELMUT

    Abstract: - 1 - HOE 86/F 025 of the disclosure: Electrodepositable stable coating preparation essentially comprising a synthetic resin A), which contains amino groups and, if appropriate, hydroxyl groups, a hardener a) which is capable of transesterification and/ or transamidation, water as diluent C), if appropriate, organic solvents D), and also the conventional coating additives and, if appropriate, hardening catalysts E), wherein the organic solvents content is a maximum of 10% by weight, relative to the solids content. The invention furthermore relates to a process for the preparation of this coating preparation, which is distinguished by a low organic solvents content with good storage stability.

    COATING COMPOSITIONS IN POWDER FORM

    公开(公告)号:CA2064290A1

    公开(公告)日:1992-10-19

    申请号:CA2064290

    申请日:1992-03-27

    Applicant: HOECHST AG

    Abstract: HOECHST AKTIENGESELLSCHAFT - Werk KALLE-ALBERT 91/F 113 16 April 1991 WL-Dr.Ot.-ui Coating compositions in powder form A coating composition in powder form which is composed of (A) a copolymer containing glycidyl groups, (B) an aliphatic or cycloaliphatic dibasic acid, its anhydride or a polyol-modified anhydride of a dibasic acid, (C) optionally, pigments and other additives. The copolymer (A) has a molecular weight (Mn) of 1,000-10,000 and a glass transition temperature of 30-90.degree.C and is a mixed polymer composed of a) at least 10% by weight of glycidyl acrylate or glycidyl methacrylate, b) 5-50% by weight of tert.-butyl acrylate or tert. butyl methacrylate, c) 20-60% by weight of one or more alkyl esters of aliphatic unsaturated monocarboxylic or dicarboxylic acids and d) 0-50% by weight of one or more other olefinically unsaturated monomers.

    HARDENING COMPONENT FOR SYNTHETIC RESINS WHICH CONTAIN GROUPS WHICH ARE CAPABLE OF FORMING AMIDES OR ESTERS WITH CARBOXYLIC ACIDS

    公开(公告)号:CA1303776C

    公开(公告)日:1992-06-16

    申请号:CA528535

    申请日:1987-01-30

    Applicant: HOECHST AG

    Abstract: HOE 86/F 024 of the disclosure: Hardening component for synthetic resins which contain groups which are capable of forming amides or esters with carboxylic acids Hardeners are described for synthetic resins which contain groups which are capable of ester or amide formation and, if appropriate, polymerizable double bonds. The new hardeners, which allow lower crosslinking temperatures, are products A) of the Michael addition of compounds B), containing Michael addition-capable ester groups, to compounds C) which contain at least two Michael addition-capable double bonds, the products A) having an average of at least one polymerization-capable double bond and at least two transesterification- or transamidation-capable ester groups per molecule and the compound B) representing products of the reaction of b1) CH-active alkyl esters and b2) polyisocyanates.

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