摘要:
The present invention relates to aliphatic polyurethanes which contain acryloyl groups, have a viscosity at 23.degree. C. of 1000 to 300,000 mPa.s as an 80% by weight solution in butyl acetate and are based on the reaction product (at an NCO/OH equivalent ratio 0.5:1 to 1:1) ofa) 1.0 mole of a polyisocyanate component containing at least 50 equivalent percent, based on NCO equivalents, of 1,6-diisocyanato-2,2,4-trimethylhexane and/or 1,6-diisocyanato-2,4,4-trimethylhexane withb) 0.7 to 1.5 moles of at least one monohydric alcohol having a molecular weight of 116 to 300 and containing acryloyl groups andc) 0.2 to 0.6 moles of at least one polyhydric alcohol having a molecular weight of 92 to 200.The present invention also relates to a process for the preparation of these aliphatic polyurethanes.
摘要:
The present invention relates to a process for the production of a polyurethane containing acryloyl groups byI) reacting at an NCO:OH equivalent ratio of 1.8:1 to 2.5:1, based on starting components a) and b),a) 0.25 to 0.5 moles of a diisocyanate component comprising one or more organic diisocyanates other than hexamethylene diisocyanate which have a molecular weight below 300 and contain aliphatically and/or cycloaliphatically bound isocyanate groups withb) 0.2 to 0.55 moles of an alcohol component containing acryloyl groups and comprising one or more monohydric alcohols containing acryloyl groups and having a molecular weight of 116 to 144II) mixing the product of step I) withc) 0.5 to 0.75 moles of hexamethylene diisocyanate,III) reacting the resulting mixture withd) 0.1 to 0.65 moles of an alcohol component containing acryloyl groups and comprising one or more monohydric alcohols containing acryloyl groups and having a molecular weight of 116 to 144 ande) 0.15 to 0.45 moles of one or more branched monohydric or dihydric alcohols which have a molecular weight of 132 to 2000 and may contain ether and/or ester groups, wherein components d) and e) may be added in any order or in admixture andIV) reacting the product from step III withf) 0.1 to 1.2 moles of one or more at least trihydric alcohols having a molecular weight of 92 to 2000, wherein the NCO:OH equivalent ratio, based on all of the starting components a) to f), is 0.7:1 to 1:1.
摘要:
The present invention relates to coating compositions, which are curable by radiation and contain I) 0 to 95 parts by weight of at least one binder curable by radiation and containing maleate, fumarate and/or acryloyl groups other than those of component II), II) 5 to 100 parts by weight of a mixture of A) 20 to 80 parts by weight of at least one polyester resin prepared from fatty acids, provided that at least 20 wt. % of component A) is a fatty acid having a number average molecular weight of 112 to 400 and B) 20 to 80 parts by weight of compounds containing (meth)acryloyl groups, having a viscosity at 23.degree. C. of 10 to 1,000 mPa.s and having a number average molecular weight of 170 to 1,000, wherein the sum of the parts by weight of components I) and II) adds up to 100, based on the weight of components I) and II), and the sum of the parts by weight of components A) and B) adds up to 100, based on the weight of components A) and B).
摘要:
The present invention relates to polyurethanes which contain acryloyl groups, have a viscosity at 23.degree. C. of 800 to 100,000 mPa.s, and are prepared by reacting at an NCO/OH equivalent ratio of 0.7:1 to 1:1,I) an organic isocyanate component containinga) 20 to 50 mole % of one or more organic diisocyanates, other than hexamethylene diisocyanate, which have aliphatically and/or cycloaliphatically bound isocyanate groups and a molecular weight of less than 300 andb) 50 to 80 mole % of hexamethylene diisocyanate withII) a hydroxyl component containingc) 43 to 93 hydroxyl equivalent % of an alcohol component which has an average hydroxyl functionality of 0.8 to 1.5 and contains one or more alcohols having acryloyl groups and a molecular weight of 116 to 1000, provided that at least 50 mole % of component c) is made up of ether group-containing esterification products of acrylic acid with ether group-containing alcohols which are at least trihydric, wherein the esterification products have an average molecular weight of 300 to 1000 and an average hydroxyl functionality of 0.8 to 1.5,d) 7 to 50 hydroxyl equivalent % of one or more monohydric or dihydric branched alcohols having a molecular weight of 130 to 300 ande) 0 to 50 hydroxyl equivalent % of one or more monohydric or polyhydric alcohols having a molecular weight of less than 130.The present invention also relates to a method of preparing these polyurethanes and to their use as binders for coating compositions, particularly for those which can be hardened by high-energy radiation.
摘要:
The present invention relates to aliphatic polyurethanes which contain acryloyl groups and are based on the reaction product (at an NCO/OH equivalent ratio of 0.5:1 to 1:1) ofa) 1.0 mole of a diisocyanate component containing at least 50 equivalent percent, based on NCO equivalents, of hexamethylene diisocyanate withb) 0.5 to 0.85 moles of at least one monohydric alcohol having a molecular weight of 116 to 144 and containing acryloyl groups.c) 0.15 to 0.5 moles of a monohydric alcohol having a molecular weight of 154 to 2000 and containing ester groups or a mixture of alcohols having an average molecular weight of 154 to 2000 and an average hydroxyl functionality of 0.8 to 1.5 and containing ester groups andd) 0.3 to 0.5 moles of at least one polyhydric alcohol having a molecular weight of 62 to 2000.The present invention also relates to a process for the preparation of these polyurethanes.
摘要:
A polyurethane is disclosed having improved properties as a reactive emulsifier for radically-curable synthetic resins. The polyurethane is obtained by the reaction of a) a polyisocyanate component; b) an alcohol component; and c) a polyethylene glycol component. The reactive emulsifiers are useful in aqueous coating compositions.
摘要:
The present invention relates to a process for preparing unsaturated esters by azeo-tropically esterifyinga) monohydric or polyhydric alcohols orb) polyesters which contain at least two hydroxyl groups per molecule and are the reaction product of polyhydric alcohols with mono- or dibasis, saturated or aromatically unsaturated carboxylic acids,with ethylenically unsaturated carboxylic acids in the presence of an acid catalyst and subsequently reacting the acid catalyst and any unesterified carboxylic acid groups with ethylenically unsaturated monoepoxy compounds.
摘要:
The present invention relates to a process for the preparation of amine-modified epoxy (meth)acrylates by reacting organic compounds having epoxy groups with a) acrylic and/or methacrylic acid in a carboxyl/epoxide equivalent ratio of 0.8:1 to 0.99:1 and b) basic nitrogen compounds selected from ammonia and (cyclo)aliphatic primary or secondary amines in an NH/epoxide equivalent ratio of 0.01:1 to 0.2:1, such that the epoxy groups originally present are substantially completely reacted and at least 0.01 NH equivalents, per epoxide equivalent, of the basic nitrogen compounds are reacted with the epoxy groups still present after completion of the reaction according to step a). A present invention also relates to the use of the amine-modified epoxy (meth)acrylates obtained from this process as binders in radical-cured coating, putty or sealant compositions or for the preparation of molded articles.
摘要:
The present invention relates epoxy(meth)acrylates which are substantially free from epoxide groups and are the reaction products of organic compounds containing epoxide groups and having a number average molecular weight (M.sub.n) of 130 to 1000 with I) compounds containing carboxyl and ester groups at an equivalent ratio of carboxyl groups to epoxide groups of 0.7:1.0 to 1.0:1.0, wherein compounds I) are reaction products of A) organic dicarboxylic acids or dicarboxylic acid anhydrides having a molecular weight of 98 to 164 with B) reaction products containing alcoholic hydroxyl groups and prepared at a COOH/OH equivalent ratio of 0.6 to 0.95 from a) (meth)acrylic acid and b) tri- or tetrahydric ether alcohols having a molecular weight of 180 to 1000, which contain at least two ethylene oxide units --CH.sub.2 --CH.sub.2 --O-- as part of one or more ether structures and which contain up to 20 mole %, based on the total moles of alkylene oxide units, of propylene oxide units, --CH.sub.2 --CH(CH.sub.3)--O--, and II) basic nitrogen compounds selected from ammonia and (cyclo)aliphatic primary and secondary mines at an NH/epoxide equivalent ratio of 0:1.0 to 0.3:1.0. The present invention also relates to a process for preparing these epoxy(meth)acrylates and to their use in radically hardenable coating, putties or sealing compositions, or for the production of moldings.
摘要:
The present invention relates to compositions which may be cured by radical polymerization at room temperature and containA) 20 to 100 parts by weight of .alpha.,.beta.-ethylenically unsaturated polyesters which are the reaction products ofa) a dicarboxylic acid component containing i) 40 to 100 carboxyl equivalent % of .alpha.,.beta. ethylenically unsaturated dicarboxylic acids and/or their anhydrides and ii) 0 to 60 carboxyl equivalent % of dicarboxylic acids and/or their anhydrides other than those set forth in i) withb) an alcohol component containing i) 25 to 100 hydroxyl equivalent % of alkoxylated 2-butene-1,4-diols having an average molecular weight 130 to 400 and ii) 0 to 75 hydroxyl equivalent % of mono- or poly- hydric alcohols having a molecular weight of 32 to 400 other than those set forth in i) wherein the amounts of a) and b) are chosen such that equivalent ratio of carboxyl groups to hydroxyl groups is no more than 1:1,B) 0 to 80 parts by weight of compounds containing (meth)acryloyl groups and/or vinyl ether groups,wherein the sum of the parts by weight of A) and B) is 100, based on the weight of components A) and B), provided that when components A) and B) are used in a weight ratio exceeding 9:1, component a) contains at least 90 carboxyl equivalent % of component ai) and component b) contains at least 40 hydroxyl equivalent % component bi). The present invention also relates to the use of these compositions as binders for coating, patching or sealing compositions and for the production of molded bodies.