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1. 发明专利

DE59607985D1 未知
公开(公告)号：DE59607985D1
公开(公告)日：2001-11-29
申请号：DE59607985
申请日：1996-07-25
申请人： BAYER AG
发明人： BLUM DR , SICKERT ARMIN , HOVESTADT DR
IPC分类号： C08F2/44 , C08F283/06 , C08G18/48 , C08G18/62 , C08G18/80 , C09D151/08 , C09D161/20 , C09D175/00 , C09D175/04 , C09D175/08
摘要： Aq., crosslinkable binder dispersions (A) with a low solvent content, an acid no. of 8-45 mg KOH/g solid, an OH no. of 25-200 and a solids content of more than 35%, contg. (w.r.t. solids) (A1) 2-30 wt% OH-functional polyether(s) with a functionality of 1.8-6.0, a mol. wt. of 152-4000 and an OH no. of 50-700 mg KOH/g, (A2) 35-90 wt% OH-functional copolymer with an OH no. of 20-220 and an acid no. of 0-50, derived from (b1) (meth)acrylate esters and/or vinylaromatics, (b2) OH-functional monomers, (b3) other monomers and opt. (b4) acid-functional monomers, and (A3) 5-60 wt% OH- and COOH-functional copolymer with an OH no. of 30-220 and an acid no. of 25-200, derived from monomers (b1)-(b4) as above, in which the acid no. of (A3) is higher than that of (A2). Also claimed are (i) aq. binder combinations contg. 55-97 wt% dispersion (A) and 3-45 wt% amino resin and/or blocked polyisocyanate as crosslinker, esp. 2-component binders contg. 55-97 wt% (A) and 3-45 wt% polyisocyanate(s) with free NCO gps. and opt. hydrophilic gps., and (ii) a process for the prodn. of (A), by polymerising monomers (b1)-(b4) in presence of (A1) in amts. as above to form copolymer (A2), polymerising (b1)-(b4) to form (A3), converting 40-100% of the COOH gps. into carboxylate by adding a neutralising agent, and dispersing in water to give (A) with a solids content of more than 35 wt% and an organic solvent content of less than 6 wt%..

2. 发明专利

DE59710754D1 未知
公开(公告)号：DE59710754D1
公开(公告)日：2003-10-23
申请号：DE59710754
申请日：1997-10-31
申请人： BAYER AG
发明人： HOVESTADT DR , PROBST DR , BLUM DR , IRLE DR , SONNTAG DR , NOBLE DR , SCHELLE DR
IPC分类号： C08F2/12 , C08F220/28 , C08F246/00 , C09D133/14
摘要： Production of polyacrylate secondary dispersions having an OH number of 15-200 mgKOH/ solid and an acid number of 5-55 mg KOH/g solid comprises polymerising (A) 45-90 wt% of a mixture of ethylenically unsaturated monomers with (B) 0.5-5 wt% of an initiator soluble in organic solvent (C) in a mixture of (C) 2.5-20 wt% of an organic solvent (mixture) and (D) 5-45 wt% water. The polyacrylate resin obtained is partially neutralised and optionally dispersed in water.

3. 发明专利

DE59605011D1 未知
公开(公告)号：DE59605011D1
公开(公告)日：2000-05-31
申请号：DE59605011
申请日：1996-01-11
申请人： BAYER AG
发明人： SCHNEIDER DR , BLUM DR , SICKERT ARMIN
IPC分类号： C08G18/00 , C08G18/08 , C08G18/40 , C08G18/42 , C08G18/62 , C09D175/04
摘要： The prodn. of aq. binders (I) for aq. coating materials comprises reacting a mixt. of (A) 9.9-85 wt.% OH- and acid-functional poly(meth)acrylate component, and (B) 14.9-90 wt.% OH-functional, fatty acid-modified polyester component, with (C) 0.1-20 wt.% of a di-isocyanate component contg. at least one di-isocyanate with a mol. wt. of 140-318, to form a urethane and then dissolving and/or dispersing the prod. in water with simultaneous or prior neutralisation of at least some of the COOH gps. Also claimed are aq. binders (I) obtd. by this process.

4. 发明专利

DE59710872D1 未知
公开(公告)号：DE59710872D1
公开(公告)日：2003-11-27
申请号：DE59710872
申请日：1997-02-26
申请人： BAYER AG
发明人： BLUM DR , NAUJOKS DIPL-CHEM-ING , REIFF DR , WILMES DR , MEIER-WESTHUES DR , AUDENAERT DR
IPC分类号： C08L75/04 , C03C25/10 , C08G18/00 , C08G18/08 , C08G18/12 , C08G18/28 , C08G18/42 , C08G18/48 , C08G18/50 , C08G18/65 , C08G18/66 , C08G18/72 , C08G18/75 , C09D175/00 , C09D175/02 , C09D175/04
摘要： Aqueous polyurethane-urea (PUU) dispersions which show film-forming temperatures (MFT) of not more than 20 degrees C without using film-forming additives, and which dry at room temperature to give films with a pendulum hardness (DIN 53157) of at least 100 seconds, in which the solid material has urethane and urea group contents of 7-20 and 5-18 wt.% respectively and contains 15-70 wt.% of structural units of formula (I) and/or (II), X = -O- and/or -NA-, with A = H or -(CH2)n-B- (with B = H or X and n = 2). Also claimed are: (i) a process for the production of these PUU dispersions; and (ii) paint containing these dispersions.

5. 发明专利

DE59805396D1 未知
公开(公告)号：DE59805396D1
公开(公告)日：2002-10-10
申请号：DE59805396
申请日：1998-11-18
申请人： BAYER AG
发明人： IRLE DR , BLUM DR , KREMER WOLFGANG , ROSCHU ROLF
IPC分类号： C08F220/10 , C08F283/00 , C08G18/08 , C08G18/12 , C08K5/17 , C08G18/44 , C08G18/48 , C08G18/65 , C08G18/75 , C08G18/83 , C08L33/08 , C08L33/14 , C08L75/04 , C09D175/04
摘要： A storage stable polyurethane-polyacrylate hybrid dispersion (I) that is self crosslinking after application comprises: (A) a polyurethane comprising polyisocyanates; polymeric polyols; monoalcohols; and polyols, aminopolyols or polyamines; (B) a polymer of a mixture of radically polymerizable monomers containing a compound containing acetoacetoxy groups; and (C) an at least difunctional primary or secondary amine. A storage stable polyurethane-polyacrylate hybrid dispersion (I) that is self crosslinking after application comprises: (A) 10-95 wt.% of a polyurethane comprising (1) polyisocyanates; (2) polymeric polyols having an average molecular weight of 400-6000; (3) monoalcohols; and (4) polyols, aminopolyols or polyamines having a molecular weight of less than 400 whereby at least one of the polyols and/or polyamines contains or may form an anionic group; (B) 5-90 wt.% of a polymer of a mixture of radically polymerizable monomers containing 0.5-20 wt.% (w.r.t. total solids content) of a compound containing acetoacetoxy groups; and (C) an at least difunctional primary or secondary amine in an equivalent ratio with respect to acetoacetoxy groups of 0.5:1-1.1:1. Components (A) and (B) are dispersible in water or a mixture of water and co-solvent.

6. 发明专利

DE59606836D1 未知
公开(公告)号：DE59606836D1
公开(公告)日：2001-06-07
申请号：DE59606836
申请日：1996-02-13
申请人： BAYER AG
发明人： BLUM DR , PEDAIN DR
IPC分类号： C08G18/00 , C08G18/08 , C08G18/42 , C08G18/66 , C08G18/73 , C08G18/75 , C09D5/00 , C09D175/06
摘要： A 20-60 wt.% aq. dispersion of a polyester-polyurethane (I) with a viscosity of 10-20000 mPa.s at 23 degrees C and pH of 5.5-10 is claimed. (I) has a Mw of 1500-100000, OH number of 20-300 mg KOH/g, acid number of 7-70 mg KOH/g, corresp. to 20-100% COOH gps. neutralised as carboxylate gps. and a urethane (-NH-CO-O-) content of 2.5-15 wt.%. (I) is a salt obtd. by (partial) neutralisation of a reaction prod. (II) with a base. (II) is prepd. from (a) 50-91 wt.% polyester component, comprising polyester-polyol(s) (III) with an OH no. of 25-350; (b) 7-45 wt.% polyisocyanate component (IV), comprising at least 50 wt.% 1-methyl-2,4- and/or 2,6-diisocyanatocyclohexane (IVA), rest organic polyisocyanates (IVB) of molecular wt. 140-1500; (c) 2-12 wt.% (potential) anionic component (V), comprising cpd(s). with NCO-reactive gp(s). and opt. (partly) neutralised salt-forming gps., opt. (d) 0.10 wt.% nonionic-hydrophilic component (VI), comprising a mono- or di-functional cpd. with hydrophilic polyether chain(s); and/or opt. (e) 0-30 wt.% other components (VII) with NCO-reactive H atoms and a molecular wt. of 62-2500. Also claimed is an aq. binder combination of an aq. (I) dispersion and a hardener.

7. 发明专利

DE59609676D1 未知
公开(公告)号：DE59609676D1
公开(公告)日：2002-10-24
申请号：DE59609676
申请日：1996-06-13
申请人： BAYER AG
发明人： BLUM DR , ARNING EBERHARD , ROSCHU ROLF , PEDAIN DR
IPC分类号： C08L75/04 , C08G18/00 , C08G18/08 , C08G18/42 , C08G18/46 , C08G18/64 , C08L75/00 , C09D175/00 , C09D175/04 , C09D175/06
摘要： An aq. binder comprises a combination of: (A) 65-97 wt.% aq. polyol of 23 degrees C viscosity of 25-15,000 mPa.s; and (B) 3-35 wt.% polyisocyanate component of 23 degrees C viscosity of 50-10,000 mPa.s contg. at least one organic polyisocyanate. The equiv. ratio of NCO gps. in (A):OH gps. in (B) = 0.3-2:1. The novel feature is that component: (A) comprises a mixt. of: (A1) an OH contg. aq. polyester dispersion or soln. comprising an OH-, carboxylate- and/or sulphonate-gp.-contg. polyester resin of ave. mol.wt. (Mw) 1,000-40,000, OH No. 15-100 mg KOH/g dispersion or soln. and acid no. (COOH or COOH + SO3H) 2-30 mg KOH/g, this polyester being the reaction prod. of components (a1)-(a4) as listed below; and (A2) a physically-drying aq. dispersion of a polyurethane contg. carboxylate and/or sulphonate gps. Reaction components (a1)-(a4) are as follows: (a1) 65-100 wt.% polyester pre-condensate from (i) 0-40 wt.% monocarboxylic acids, (ii) 20-65 wt.% di-, tri- and/or tetra-functional alcohols, (iii) 20-60 wt.% di- and/or tri-functional carboxylic acids or anhydrides and (iv) 0-10 wt.% sulphonate-, carboxyl- and/or OH-contg. component; (a2) 0-15 wt.% carboxylic acid anhydride or hydroxycarboxylic acid; (a3) 0-22 wt.% of an at least difunctional isocyanate component; and (a4) 0-8 wt.% mono-, di- and/or tri-functional substance with OH and/or amino gps. Also claimed is the prodn. which involves introducing the various auxiliaries or additives for (A) prior to polyisocyanate (B), such introduction being by simple stirring such that rather special appts. nor a further viscosity adjustment is required.

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