ADHESIVE FOR ARTIFICIAL TOOTH AND ITS PRODUCTION

    公开(公告)号:JPH10218720A

    公开(公告)日:1998-08-18

    申请号:JP2337898

    申请日:1998-02-04

    Applicant: BASF AG

    Abstract: PROBLEM TO BE SOLVED: To obtain the subject adhesive comprising a copolymer producible so as to further increase bonding power and advantageously not to contain a solvent as an acting substance, by including a specific copolymer and a vehicle. SOLUTION: (i) An acrylic ester of the formula CH2 =CR'-COOR (R' is H or methyl; R is a 1-30C alkyl) in an amount of 5-95wt.% is copolymerized with (ii) 95-5wt.% of (meth)acrylic acid, (iii) optionally

    PRODUCTION OF WATER-SOLUBLE COPOLYMER AND WATER-SOLUBLE COPOLYMER

    公开(公告)号:JPH101519A

    公开(公告)日:1998-01-06

    申请号:JP5819097

    申请日:1997-03-13

    Applicant: BASF AG

    Abstract: PROBLEM TO BE SOLVED: To obtain a water-soluble copolymer which can give a clear soln. when dissolved in water by subjecting a water-soluble N-vinyllactam and a hydrophobic comonomer to free-radical copolymn. in an aq. soln. in the presence of an initiator. SOLUTION: A copolymer which can give a clear soln. when dissolved in water is obtd. by subjecting a water-soluble N-vinyllactam represented by the formula (wherein n is 1 or 2) and a hydrophobic comonomer having a water solubility at 20 deg.C of 1-100g/l to free-radical copolymn. in an aq. soln. in the presence of an initiator. The initiator is selected from among an azo initiator, H2 O2 , a hydroperoxide combined with a reducing agent, and a peracid salt and is added in the form of a soln. in water and/or a 1-4C alcohol to the copolymn. mixture.

    35.
    发明专利
    未知

    公开(公告)号:DE59913213D1

    公开(公告)日:2006-05-11

    申请号:DE59913213

    申请日:1999-03-11

    Applicant: BASF AG

    Abstract: The invention relates to the use of copolymers comprising a) 82 to 99.9 mol % of at least one monoethylenically unsaturated C3-C8-carboxylic acid; b) 0.1 to 18 mol % of at least one monomer selected from the group b1) N-C8-C30-alkyl-substituted amides of monoethylenically unsaturated C3-C8-carboxylic acids, b2) N,N-C8-C30-dialkyl-substituted amides of mono-ethylenically unsaturated C3-C8-carboxylic acids, b3) C8-C30-alkyl esters of monoethylenically unsaturated C3-C8-carboxylic acids; c) 0 to 17.9 mol % of at least one monomer selected from the group of c1) vinyl esters of aliphatic C8-C30-carboxylic acids, c2) C8-C30-alkylvinyl ethers, the mol % data for the individual components adding up to 100%, as solubilizer.

    PROCEDIMIENTO PARA LA OBTENCION DE DISPERSIONES ACUOSAS DE POLIMEROS.

    公开(公告)号:ES2224532T3

    公开(公告)日:2005-03-01

    申请号:ES99122893

    申请日:1999-11-18

    Applicant: BASF AG

    Abstract: Procedimiento para la obtención de una dispersión acuosa de polímeros mediante polimerización de al menos un monómero etilénicamente insaturado, polimerizable por medio de radicales del grupo constituido por ésteres de alquilo con 1 a 24 átomos de carbono de ácidos carboxílicos con 3 a 8 átomos de carbono monoetilénicamente insaturados, ésteres de alquilo con 1 a 24 átomos de carbono de ácidos dicarboxílicos con 4 a 8 átomos de carbono monoetilénicamente insaturados, ésteres de vinilo de ácidos carboxílicos con 1 a 24 átomos de carbono alifáticos, amidas de ácidos carboxílicos con 3 a 8 átomos de carbono monoetilénicamente insaturados, alquil-viniléteres con 1 a 24 átomos de carbono, amidas N- alquil-substituidas con 1 a 24 átomos de carbono de ácidos carboxílicos con 3 a 8 átomos de carbono monoetilénicamente insaturados, amidas N, N-dialquil- substituidas con 1 a 24 átomos de carbono de ácidos carboxílicos con 3 a 8 átomos de carbono monoetilénicamente insaturados, N-vinillactamas, N- vinilaminas, estireno y butadieno en un sistema acuoso en presencia de iniciadores de la polimerización, caracterizado porque el valor del pH de la dispersión acuosa se ajusta durante el procedimiento de obtención por adición de, al menos, dos reactivos diferentes, que tienen acción básica, añadiéndose al menos uno de los reactivos con acción básica, en varias etapas, siendo al menos uno de los reactivos con acción básica, un ácido débil y ajustándose la dispersión, tras la conversión completa de los monómeros, a un valor del pH de 6 hasta 10.

    38.
    发明专利
    未知

    公开(公告)号:AT269358T

    公开(公告)日:2004-07-15

    申请号:AT99122893

    申请日:1999-11-18

    Applicant: BASF AG

    Abstract: Preparation of an aqueous polymer dispersion comprises polymerization of at least one radical-polymerizable, ethylenically unsaturated monomer in an aqueous system in the presence of a polymerization initiator where the pH of the aqueous system is set by addition of at least two different basic reagents and where at least one of the basic reagents is added more than once. Independent claims are included for: (1) aqueous polymer dispersions obtained using the process; (2) polymer powders obtained by drying the aqueous dispersions; (3) use of the dispersions as auxiliaries or coating materials for solid pharmaceutical dosage forms; and (4) solid pharmaceutical dosage forms containing polymers prepared using the process.

    40.
    发明专利
    未知

    公开(公告)号:ES2144092T3

    公开(公告)日:2000-06-01

    申请号:ES95119001

    申请日:1995-12-02

    Applicant: BASF AG

    Abstract: Polymers (I), used in hair styling agents, are prepd. by radical-initiated copolymerisation of: (A) 5-50 wt.% (quat.) 1-vinyl imidazole; (B) 20-80 wt.% N-vinyl caprolactam; (C) 10-60 wt.% N-vinyl pyrrolidone; and (D) 0-30 wt.% additional radical copolymerisable monomer which forms a homopolymer with a Tg > 20 degrees C, with the proviso that the polymer is quaternised if (A) is 1-vinyl imidazole. Cosmetic hair and skin formulations contg. (I) as active ingredients are also claimed. Pref. (A) is 3-methyl-1-vinyl imidazolinium chloride or -methyl sulphate, or 3-ethyl-1-vinyl imidazolinium methyl sulphate. (D) is tert.-butyl acrylate. (I) is prepd. by copolymerisation of a mixt. comprising 10-30 wt.% 1-vinyl imidazole quaternised with di(m)ethyl sulphate as component (A), 40-60 wt.% (B), and 30-50 wt.% (C).

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