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    Aq. polymer dispersion for UV-cured, dirt-resistant coating prepn. - contain a mixt. of hydrophilic and hydrophobic photoinitiator of the aromatic ketone type
    81.
    发明专利
    Aq. polymer dispersion for UV-cured, dirt-resistant coating prepn. - contain a mixt. of hydrophilic and hydrophobic photoinitiator of the aromatic ketone type 未知

    公开(公告)号：DE4318083A1

    公开(公告)日：1994-05-11

    申请号：DE4318083

    申请日：1993-06-01

    Applicant: BASF AG

    Inventor： BECHERT BERTOLD ,  SCHWARTZ MANFRED DR ,  DOTZAUER BERNHARD DR ,  GLOECKNER MARTIN

    IPC: C04B41/48 ,  C04B41/63 ,  C08F2/22 ,  C08J3/03 ,  C08L71/02 ,  C09D133/06 ,  C08L33/06 ,  C08F212/00 ,  C08F220/12 ,  C08K5/07 ,  C08L25/00 ,  C09D5/02 ,  C09D7/12 ,  C09D125/00

    Abstract: Aq. polymer dispersions (PD) contain (A) a copolymer of (a) 0.5-5 wt.% 3-8C mono-unsatd. carboxylic acid, anhydride and/or amide, (c) 95-99.5 wt.% 1-18C alkyl ester(s) of 3-6C alpha,beta-unsatd. acid(s) and/or vinylaromatic monomer(s) and (c) 0-4 wt.% other comonomers, (B) 0.1-7 wt.% (w.r.t. A) aromatic ketone(s) of formula R-CO-R1 (I), and (C) 0.1-7 wt.% (w.r.t. A) aromatic ketone(s) of formula (II), (III), (IV) or 2,4,6-trimethylbenzophenone; the total amt. of (B+C) = 0.1-7 wt.% w.r.t. (A); R is linear 1-4C alkyl, branched opt. substd. 3-4C alkyl, 6-20C aryl or the gp. R1; R1 of a gp. of formula (V). R2-R6 are each H, 1-4C alkyl or Ph, but with 1-3 of these gps. having the formula -OCOO-Ak-B1-Cq-O-Z; A, B, C are each -(CHRa-CHRb-O)y- (with Ra, Rb = H, OH, aryl, COOH, COOMe, COOEt or 1-4C alkyl; y = 1-80), -(CH2)n-O-(CH2)p- (with n, p = 1-5), polyoxa-alkylene with 2-20C O atoms linked with CH2 or -CH2CHMe- gp(s)., a gp. of formula -(CH2)m-OCOO-(CH2)n-, -(CH2)n-OCONH-(CH2)m-, -(CH2)nNHCOO(CH2)m-, -(CH2)m-COO-(CH2)n- or -(CH2)m-OCO-(CH2)n- (with m, n = 1-10), opt. substd. 5-10C cycloalkylene, 6-12C bis-methylenecycloalkylene or opt. substd. o-, m- or p-phenylene; Ak and Cq can also = a single bond, and at least one of the gps. Ak, B1 and Cq contains at least two O atoms; k, l, q are each 1-80; z is H, 1-6C alkyl, Ph (opt. substd. with 1-20C alkyl), -COO-alkyl, -COO-aryl, -arylene-OCOO-arylene-, -COO-(p-phenylene)-COR1 or a gp. of formula. R7 is H, 4-Me, 4-NH2, 4-Cl, 4-COOH, 4-COOMe, 2-COOH, 2-COOMe, 3-NO2, 3-COOH or 3-COOMe; if R is aryl, R2 or R6 is S, through which the aryl gp. is attached to R1 in the ortho position. Also claimed is a process for the prodn. of PD, by radical emulsion polymerisation of a mixt. of monomers (a), (b) and opt. (c), followed by addn. of components (B) and (C). USE/ADVANTAGE - Used for the prodn. of paint and coating systems (claimed). Also claimed are paint and coating prepns. contg. PD, and concrete roof tiles coated with PD. The invention provides aq. polymer dispersions contg. a mixt. of hydrophilic and hydrophobic photo-initiators, which enable the prodn. of coating systems with increased UV sensitivity, even after exposure to rain, and a low tendency to soiling, esp. soiling caused by efflorescence of mineral substrates.

    82.
    发明专利
    未知

    公开(公告)号：NO915072D0

    公开(公告)日：1991-12-20

    申请号：NO915072

    申请日：1991-12-20

    Applicant: BASF AG

    Inventor： DOTZAUER BERNHARD ,  WISTUBA ECKEHARDT ,  SCHWARTZ MANFRED ,  PETRI ROLF ,  BECHERT BERTOLD ,  DENU HANS-JUERGEN

    IPC: C04B41/48 ,  C04B41/62 ,  C04B41/63 ,  C09D133/06 ,  C09D133/00

    Abstract: A concrete tile (I) is claimed, which is coated with a copolymer (A) with Tg -25 to +30 deg.C, derived from (a) 0.1-10 wt.% monomer of formula R1CH=CR2-CO-X-R3-Z-CHR4R5 (III), (b) 85-99.9 wt.% at least 2 monomers of the type (1-24C alkyl) (meth)acrylates, vinyl esters of 1-20C carboxylic acids, up to 20C vinylaromatics, 3-6C unsatd. nitriles, vinyl halides and/or 2-8C non-aromatic hydrocarbons with olefinic double bond(s), and (c) 0-10 wt.% other Sn-free comonomers; R1, R2 = H or 1-4C alkyl; R3 = 1-20C bridging gp.; R4 = -COR6, -COOR6 or CN; R5 = H, -COR9, -COOR9 or CN; X = O or NR7; Z = single bond, CH2, O, NR8 or -OCO-; (with R6-R9 = H, or 1-12C alkyl, aryl, alkaryl or aralkyl). Also claimed is a process for the prodn. of (I), by application of an aq. prepn. contg. (A) to at least one surface of the green concrete, and drying the prepn. by hardening the concrete. More specifically, monomer (a) is acetylacetoxyethyl (meth)acrylate, acetylacetoxybutyl (meth)acrylate, cyanoacetoxyethyl (meth)acrylate, 1,1-dibenzoyl-2-(meth)acrylamidoethane, 1-benzoyl-1-acetyl-2- (meth)acrylamidoethane, or ethyl alpha-benzoyl-beta-(meth) acrylamidopropionate, and (b) are vinylaromatics or (1-8C alkyl) (meth)acrylates; (I) is coated with a prepn. contg. copolymer (A) and up to 450 wt.% mineral additives (B) and/or colour pigments (C) (w.r.t. amt. of A); another layer of the aq. prepn. is applied to the hardened tile and dried; the amt. of prepn. used is such that the total amt. of dry coating is 50-500 g/m2.

    87.
    发明专利
    未知

    公开(公告)号：DE50103345D1

    公开(公告)日：2004-09-23

    申请号：DE50103345

    申请日：2001-09-03

    Applicant: BASF AG

    Inventor： SANDOR MARIO ,  SCHWARTZ MANFRED ,  BECHERT BERTOLD ,  WIESE HARM

    IPC: C04B41/48 ,  C04B41/50 ,  C04B41/52 ,  C04B41/68 ,  C04B41/70

    Abstract: Moldings comprise a base element consisting of a cement-bound mineral material, which may be modified with polymers, and a mineral coating present on at least one of the main surfaces of the base element and comprising a polymer-modified mineral material which contains at least one clay mineral as the main component and at least one film-forming, hydrophobic polymer distributed in the mineral material.

    88.
    发明专利
    未知

    公开(公告)号：AT273942T

    公开(公告)日：2004-09-15

    申请号：AT01971995

    申请日：2001-09-03

    Applicant: BASF AG

    Inventor： SANDOR MARIO ,  SCHWARTZ MANFRED ,  BECHERT BERTOLD ,  WIESE HARM

    IPC: C04B41/48 ,  C04B41/50 ,  C04B41/52 ,  C04B41/68 ,  C04B41/70

    Abstract: Moldings comprise a base element consisting of a cement-bound mineral material, which may be modified with polymers, and a mineral coating present on at least one of the main surfaces of the base element and comprising a polymer-modified mineral material which contains at least one clay mineral as the main component and at least one film-forming, hydrophobic polymer distributed in the mineral material.

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