Thickener prepn. by monomer mixt. copolymerisation in organic solvent - contg. ethylene!-propylene! non-conjugated diene! copolymer elastomer as protective colloid

    公开(公告)号:DE2833468A1

    公开(公告)日:1980-02-07

    申请号:DE2833468

    申请日:1978-07-29

    Applicant: BASF AG

    Abstract: Thickeners are prepd. by copolymerising monomer mixts. contg., by wt., (a) 20-70% (meth)acrylic acid and/or maleic-, fumaric- and/or itaconic acid mono-esters, (b) 30-80% (meth)acrylates and/or vinyl esters of 2-4C monocarboxylic acids, (c) 0-10% (meth)accrylonitrile and/or (meth)acrylamide, (d) 0-30% opt. substd. styrene and (e) 0-2% of >=1 monomer contg. >=2 ethylenically unsatd. double bonds, in an inert solvent, by pptn. polymerisation, using polymerisation initiators. Polymerisation is at 100-150(105-125) degrees C in the presence of 2-10wt.%, w.r.t. monomers, of a C2H4-C3H6 elastomer contg. 10wt.% inter-polymerised no(-conjugated diene. The elastomer has I2-index 1-15 and Mooney viscosity (100 degrees C, ML 1+4), 30-55. The thickeners can be used inthe prepn. of printing pastes, paper coating mixts. and aq. coating compsns. Elastomer presence prevents formation of highly crosslinked copolymers which do not dissolve in aq. alkali solns. In polymerisation, the elastomers act as protective colloids and are built into the copolymer.

    Aq. polymer dispersions by polymerising in aq. solvents - in presence of water-sol. polymers, as coatings, impregnants, adhesives

    公开(公告)号:DE2410822A1

    公开(公告)日:1975-09-11

    申请号:DE2410822

    申请日:1974-03-07

    Applicant: BASF AG

    Abstract: Aq. dispersions of polymers are prepd. by polymerising a mono-olefinically unsatd. monomer in a mixt. of water, a water-miscible organic solvent and a high-mol. water-sol. cpd. with OH, COOH, carboxamide and/or ether gps., with pptn. of the polymer formed; the solvent is then at least partly sepd. The catalysts does not need to be water-sol; water-dispersable catalysts are suitable. The dispersions have high pigment-binding capacity. The dispersions are lacquers, coating compsns. impregnants and adhesives, opt. with addn. of other binders. Alternatively, the polymer can be isolated.

    Thermosetting carboxylate resin coating compsn - contg N,N'-di-glycidyl-urea (deriv) as hardener, improving discoloration resistance

    公开(公告)号:DE2406996A1

    公开(公告)日:1975-08-28

    申请号:DE2406996

    申请日:1974-02-14

    Applicant: BASF AG

    Abstract: Thermosetting coating compsn. contains a binder (I) consisting of a mixt. of a copolymer contg. carboxyl gps. and an epoxide cpd. and opt. the usual additives e.g. flow aids, catalysts, pigments and/or fillers, (I) consisting of a mixt. of (A) 92-60 pref. 9 0-70 (wt)pts. copolymer of (a) 25-70, pref. 45-65% vinyl-aromatic, CH2:CMe. COOMe, CH2:CHCN and/or CH2:MECN, (b) 20-60, pref. 30-55% polymerisable ester(s) of a 3-5C olefinically unsatd. carboxylic acid with 1-18C alkanol and (c) 3-25 pref. 5-15% alpha, beta-ethylenically unsatd. mono- or di-carboxylic acid, with a melt viscosity of 500-10,000 Pas at 120 degrees C and (B) 8-40, pref. 10-30 pts. epoxide cpd(s) of formula:- (in which R is H, alkyl, cycloalkyl, aryl, acyl n = 0-10). Compsn. is used as soln. or pref. powder lacquer for coating domestic appliances, pipes, wire netting, window frames, sheet metal for facades and car bodies. Compsn. is free from discolouration and very resistant to weathering. The brittleness at room temp. allows grinding.

    Thermosetting carboxylate resin coating compsn - contg di-glycidyl-N,N'-alkylene-urea as hardener, improving discoloration resistance

    公开(公告)号:DE2406995A1

    公开(公告)日:1975-08-28

    申请号:DE2406995

    申请日:1974-02-14

    Applicant: BASF AG

    Abstract: Thermosetting coating compsn. contains a binder consisting of a mixt. of (A) 92-60, pref. 70-90 (wt)pts. copolymer, contg. carboxyl gps. of (a) 25-70, pref. 40-65% vinyl-aromatic, Ch2:CMe. COOMe, CH2:CHCN and/or CH2:MECN, (b) 20-60 pref. 30-50% ester(s) of 3-5C olefinically unsatd. polymerisable carboxylic acid with 1-18C alkanol and (c) 3-25, pref. 5-15%, alpha, beta-ethylenically unsatd. mono- or di-carboxylic acid, with a melt viscosity of 500-10,000 Pas as 120 degrees C, and (B) 8-40, pref. 10-35 pts. epoxide cpd(s). of formula: (in which R and R' independently are H, alkyl, cycloalkyl or aromatic gps. n = 2 or 3; m 10). The compsn. can also contain the usual additives, e.g. flow aids, catalysts, pigments and/or fillers. Compsn. is used as soln. or pref. powder lacquers for coating domestic appliances, pipes wire netting, window frames, sheet metal for facades and car bodies. The compsn. is free from discolouration and very resistant to weathering. The brittleness at room temp. allows grinding.

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