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EP0852593A1 - Polyol de polyether acryle et son utilisation pour la production de compositions durcissables par rayonnement - Google Patents

Polyol de polyether acryle et son utilisation pour la production de compositions durcissables par rayonnement

Info

Publication number
EP0852593A1
EP0852593A1 EP96933395A EP96933395A EP0852593A1 EP 0852593 A1 EP0852593 A1 EP 0852593A1 EP 96933395 A EP96933395 A EP 96933395A EP 96933395 A EP96933395 A EP 96933395A EP 0852593 A1 EP0852593 A1 EP 0852593A1
Authority
EP
European Patent Office
Prior art keywords
polyether polyol
weight
acrylated
acrylate
acrylic acid
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP96933395A
Other languages
German (de)
English (en)
Inventor
Wolfgang Kranig
Martin Lobert
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BASF Coatings GmbH
Original Assignee
BASF Coatings GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by BASF Coatings GmbH filed Critical BASF Coatings GmbH
Publication of EP0852593A1 publication Critical patent/EP0852593A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F290/00—Macromolecular compounds obtained by polymerising monomers on to polymers modified by introduction of aliphatic unsaturated end or side groups
    • C08F290/02—Macromolecular compounds obtained by polymerising monomers on to polymers modified by introduction of aliphatic unsaturated end or side groups on to polymers modified by introduction of unsaturated end groups
    • C08F290/06—Polymers provided for in subclass C08G
    • C08F290/062—Polyethers
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G65/00—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule
    • C08G65/02—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule from cyclic ethers by opening of the heterocyclic ring
    • C08G65/32—Polymers modified by chemical after-treatment
    • C08G65/329—Polymers modified by chemical after-treatment with organic compounds
    • C08G65/331—Polymers modified by chemical after-treatment with organic compounds containing oxygen
    • C08G65/332—Polymers modified by chemical after-treatment with organic compounds containing oxygen containing carboxyl groups, or halides, or esters thereof
    • C08G65/3322—Polymers modified by chemical after-treatment with organic compounds containing oxygen containing carboxyl groups, or halides, or esters thereof acyclic

Definitions

  • the present invention relates to a novel acrylated polyether polyol which can be used in particular for radiation-curable coating compositions.
  • photopolymerizable coating compositions which contain amines as reducing agents or chain-transferring compounds.
  • amines as reducing agents or chain-transferring compounds.
  • the use of such a free amine has the disadvantage that it can act as a plasticizer and leads to an undesirable coating on the surface.
  • DE-PS 2 346 424 describes the preparation of radiation-curable compositions, starting from acrylic esters of polyhydric alcohols and secondary, aliphatic monofunctional amines.
  • EP-PS 0586849 are amino acrylates with a viscosity of 2000 to 3000 mPas, a content of olefinic double bonds of 8 to 20% by weight and a nitrogen content of 0.4 to 2.0% by weight Binders can be used for radiation-curable coating compositions.
  • the disadvantage of the products mentioned is the tendency to yellowing, in particular of the amine-modified polyether acrylates.
  • the object of the present invention is to provide an acrylated polyether polyol which can be used in radiation-curable coating formulations and which does not have the disadvantages mentioned above.
  • the acrylated polyether polyol consists of an ethoxylated polyol with a molecular weight of 500 to 1000, preferably 700 to 900, esterified with acrylic acid.
  • the polyether acrylate according to the invention consists of 50 to 75% by weight, preferably 55 to 65% by weight of a polyether polyol, 20 to 50% by weight, preferably 30 to 45% by weight of acrylic acid and 5% by weight. % usual auxiliary substances.
  • the ether alcohols used generally have a degree of ethoxylation of from 10 to 20, preferably from 13 to 17, the degree of ethoxylation indicating the number of moles of ethylene oxide which have been added on average to 1 mole of an alcohol used as starter molecule.
  • Ethoxylated trihydric or tetravalent alcohols with a degree of ethoxylation of 3 to 6 and a molecular weight of 224 to 400 are particularly preferably used.
  • Ethoxylated erythritol with a molecular weight of 500 to 1000, preferably 700 to 900, is preferably used.
  • They are preferably polyether polyols with an OHN of 150 to 350 mg KOH / g, preferably 250 to 320 and a viscosity of 300 to 1000, preferably 400 to 600 mPas.
  • hydroxyl group-containing polyethers which are esterified with acrylic acid and / or methacrylic acid are obtained by reacting the di- and / or polyhydric alcohols with different amounts of ethylene oxide using well-known methods (cf., for example, Houben-Weyl, Vol. XIV, 2. Macromolecular Substances II, (1963) obtained.
  • Alcohols containing ether groups are essentially free of -CH 2 -CH (CH 3 ) -0- propylene oxide units. This means that in addition to ethylene oxide, minor amounts of propylene oxide are used in the alkoxylation reaction (molar ratio of ethylene oxide to propylene oxide at least 5: 1).
  • the present invention also relates to a method for producing an acrylated polyether polyol which is suitable for use in particular in radiation-curable formulations.
  • polyether polyol and acrylic acid are first heated to 70 to 110 ° C, preferably 80 to 100 ° C in the presence of an entrainer. Only substances whose boiling point is between 60 and 110 ° C., preferably between 70 and 90 ° C., are suitable as entraining agents. This temperature is maintained until the acid number falls below 60 to 80, preferably 65 to 75.
  • the proportions of the polyether polyol are usually 50 to 75% by weight, preferably 55 to 65% by weight.
  • the acrylic acid is added in amounts of 20 to 60% by weight, preferably 30 to 45% by weight.
  • the Mixture of polymerization inhibitors for example hydroquinones, catalysts to accelerate the esterification reaction and antioxidants.
  • acrylic acid is again added in an amount of 1.5 to 5, preferably 2 to 3,% by weight until the acid number has dropped below 40, preferably below 35.
  • a vacuum is then applied until the acid number has fallen below 20, preferably below 15, and a viscosity of 1 to 8, preferably 2 to 6, particularly preferably 3 to 4.5 mPas has been established.
  • the reaction is continued until the acid number has dropped below 40, preferably below 35.
  • the acrylated polyether polyol thus produced now still contains residual acrylic acid and entrainer, which are removed together in vacuo at temperatures from 110 to 130 ° C.
  • the acrylated polyether polyol according to the invention is particularly suitable for radiation-curable coating compositions. These can e.g. from 40 to 90% by weight, preferably 50 to 60% by weight urethane acrylate, 0 to 20% by weight, preferably 10 to 15% by weight polyether acrylate, 10 to 50% by weight, preferably 25 to 40% by weight % Reactive diluent, 0 to 10% by weight, preferably 3 to 6% by weight photoinitiator, 0 to 30% by weight pigments and 0 to 10% by weight of other fillers customary in lacquer.
  • the urethane acrylates here preferably consist of 30 to 45% by weight of polyester, very particularly preferably 30 to 40% by weight, 0.01 to 0.1% by weight of catalysts, 0.05 to 0.1% by weight of stabilizers, 10 to 20, preferably 15 to 20% by weight of hydroxyethyl acrylate, 15 to 25, preferably 15 to 20% by weight of reactive diluent and 20 to 35, preferably 25 to 35% by weight of a diisocyanate component.
  • polyesters used consist of 50 to 75% by weight, preferably 55 to 65% by weight of alcohol and 20 to 50, preferably 30 to 45% by weight of acid and 5% by weight of customary auxiliaries.
  • the hydroxyl-containing polyester resins are prepared in a known manner by esterification of polyvalent carboxylic acids with polyhydric alcohols in the presence of suitable catalysts. Instead of the free acid, its ester-forming derivatives can also be used.
  • Alcohols suitable for the preparation of the polyesters are, for example, ethylene glycol, 1,2-propylene glycol, 1,3-propylene glycol, 1,2-butanediol, 1,3-butanediol, 1,4-butanediol, 1,5-pentanediol, neopentyl glycol and diethylene glycol , Triethylene glycol and triols, such as Glycerin, trimethylolethane, trimethylolpropane and tris-2-hydroxyethyl isocyanurate.
  • Cycloaliphatic alcohols such as cyclohexanols and 1,4-bis (hydroxymethyl) cyclohexane, aromatic alcohols such as 1,3-xylylenediol and phenols such as 2,2-bis (4-hydroxyphenyl) propane (bisphenol A) can also be used .
  • trimethylolpropane triethylene glycol and cyclohexanedimethanol are preferably used.
  • dihydric aliphatic alcohols such as 1,4-hexanediol, 1,6, 2-methylpentanediol, 5, 2-ethylbutanediol, 4, dimethylolcyclohexane
  • trihydric alcohols such as trimethylolbutane
  • tetravalent alcohols such as pentaerythritol
  • di- (trimethylolpropane) di- (pentaerythritol) and sorbitol.
  • Suitable carboxylic acids are, for example, phthalic acid, isophthalic acid, terephthalic acid and their esterifiable derivatives, such as e.g. the anhydrides, if they exist, and the lower alkyl esters of the acids mentioned, e.g. Methyl, ethyl, propyl, butyl, amyl, hexyl and octyl phthalates, terephthalates and isophthalates. Both the half esters, the dialkyl esters and mixtures of these compounds can be used. The corresponding acid halides of these compounds can also be used. Mixtures of phthalic anhydride, isophthalic acid and adipic acid are preferred.
  • Suitable for the production of the urethane acrylate are aliphatic and / or cycloaliphatic diisocyanates, such as e.g. 1,3-cyclopentane, 1,4-cyclohexane, 1,2-cyclohexane diisocyanate, 4,4'-methylene bis (cyclohexyl isocyanate) and isophorone diisocyanate, trimethylene, tetra methylene, pentamethylene, hexamethylene and trimethylhexamethylene 1, 6-diisocyanate and the diisocyanates derived from dimer fatty acids described in EP-A-204 161, column 4, lines 42 to 49.
  • Isophorone diisocyanate is preferably added to the hydroxy-functional polyester.
  • hydroxyl group-containing acrylic esters or methacrylic esters such as hydroxyethyl acrylate or hydroxybutyl acrylate
  • the monomers or oligomers containing isocyanate groups are obtained in the polyurethane acrylates or methacrylates. So that no undesired polymerization takes place in the addition reaction, the reaction mixture is generally added to the reaction inhibitors as stabilizers.
  • Suitable polymerization inhibitors include known products, such as substituted phenols, such as 2,6-di-tert-butyl-p.cresol, hydroquinones, such as methyl hydroquinones, and thiol ethers, such as thiodiglycol or phenothiazine.
  • the radiation-curable coating compositions may preferably contain known copolymerizable compounds, for example for use in radiation-curable coating compositions.
  • (Meth) acrylic acid esters especially methyl (meth) acrylate, ethyl (meth) acrylate, propyl (meth) acrylate, butyl (meth) acrylate, isopropyl (meth) acrylate, pentyl (meth) acrylate, isoamyl (meth) acrylate, hexyl (meth) acrylate, cyclohexyl (meth) acrylate, 2-ethylhexyl (meth) acrylate, octyl (meth) acrylate, 3,5,5-
  • Monomers with more than one double bond per moiety e.g. Ethylene glycol diacrylate, diethylene glycol diacrylate, propylene glycol diacrylate, trimethylene glycol diacrylate, neopentyl glycol diacrylate, 1.3
  • Pentaerythite tetraacrylate and the corresponding methacrylates are also suitable.
  • the two acrylate groups can be separated by a polyoxybutylene structure.
  • Isobornyl acrylate, trimethylolpropane triacrylate and acrylic acid esters of ethoxylated pentaerythritol are very particularly preferably used.
  • this ethylenically unsaturated compound controls the viscosity and the rate of curing of the coating compositions and the mechanical properties of the resulting coating, as is known to the person skilled in the art and is described, for example, in EP-A-223 086 and to which reference is made for further details .
  • the photoinitiator usually used in the coating compositions in an amount of 0 to 10% by weight, preferably 3 to 6% by weight, based on the total weight of the coating compositions, varies with the radiation used to harden the coating compositions (UV radiation, electron radiation , visible light).
  • the coating compositions according to the invention are preferably cured by means of UV radiation.
  • ketone-based photoinitiators are usually used, for example acetophenone, benzophenone, Diethoxyacetophenone, 2-hydroxy-2-methyl-1-phenylpropan-1-one,
  • the coating compositions may also contain pigments and customary lacquer fillers, customary auxiliaries and additives.
  • the former are used in amounts of 0 to 30% by weight.
  • the proportion of fillers customary in paint is 0 to 10% by weight.
  • Auxiliaries and additives are usually used in an amount of 0 to 4% by weight, preferably 0.5 to 2.0% by weight, in each case based on the total weight of the coating composition. Examples of such substances are leveling agents, plasticizers (e.g. extenders, such as talc, heavy spar, aluminum silicate, dolomite, defoamers and film-forming aids, e.g. cellulose derivatives, matting agents in customary amounts) and, in particular, adhesion promoters.
  • Alkoxysilanes such as N- ⁇ -aminoethyl
  • Propyltrimethoxysilane eg adhesion promoter DYNASLYAN R , 'type TRIAMO ", commercial product from Dynamit Nobel Chemie
  • adhesion promoter DYNASLYAN R eg adhesion promoter DYNASLYAN R , 'type TRIAMO ", commercial product from Dynamit Nobel Chemie
  • a carboxy-functional (meth) acrylic acid ester can be used as additional adhesion promoter.
  • examples are ß-carboxyethyl acrylate and EBECRYL 169 or 170 available from UCB, SA, Drogenbos, Belgium.
  • the coating films are cured by means of radiation, preferably by means of electron beams. The facilities and conditions for these curing methods are known from the literature (see, for example, R. Holmes, UV and EB Curing Formulations for Printing Inks, Coatings and Paints, SITA Technology, Academic Press, London, United Kingdom 1984) and do not require any further description .
  • the lacquer films harden immediately after application or after the water present has evaporated by means of UV or electron beams.
  • the facilities and conditions for these curing methods are known from the literature (see, for example, R. Holmes, UV and EB Curing Formulations for Printing Inks, Coatings and Paints, SITA-Technology, Academic Press, London, United Kingdom 1984, pages 79-111 ) and need no further description.
  • acrylated polyether polyol leads, in particular in the coating formulations described based on urethane acrylate, to properties which have hitherto not been achieved with other formulations.
  • tensile strength and elongation at break can be controlled over a wide range without the other paint film properties (reactivity, chemical resistance,
  • the acrylated polyether polyol can be water-thinned up to 50% homogeneously and thus enables sprayable water-based paints that can be hardened with electron beams or UV rays after the water has evaporated.
  • the values determined so far here show a significant improvement compared to binders customary in the market up to now.
  • the invention is described in more detail below with reference to the examples:
  • a polyester with an OH number of approximately 210 is produced by weighing 6.40 parts by weight of trimethylolpropane, 19.787 triglycol, 33.381 parts by weight of cyclohexane dimethanol, 13.007 parts by weight of phthalic anhydride, 14.588 parts by weight of isophthalic acid and 12.831 parts by weight of adipic acid.
  • a condensation reaction is carried out at 240 ° C until the following key figures are reached:
  • Plate-cone viscosity at 23 ° C 70% in methoxypropanol 2nd stage 34.139 parts by weight of the polyester produced in stage 1 are weighed together with 0.039 dibutylzindilaurate, 0.078 part by weight of di-tert-butyl-p-cresol, 15 parts by weight of hydroxyethyl acrylate, 21.956 parts by weight of phenoxyethyl acrylate, 30 ppm of phenothiazine and heated to 60 ° C. . 28.707 ppm isophorone diisocyanate and 0.080 ppm ethanol are metered in so that the temperature remains below 65 ° C. It is kept at 60 ° C until the NCO content falls below 1.5%. The mixture is then heated to 90 ° C. until the NCO content has dropped below 0.1%.
  • Example 3 Free paint film 39.8 parts aromatic urethane acrylate, 80% in phenoxyethyl acrylate, 1.0 part acrylated polyether polyol, 14.8 parts isobornyl acrylate, 19.0 parts ethoxylated pentaerythritol ethacrylate SR 494 (Cray Valley) 24.8 parts titanium dioxide, 0.3 part emulsifier ( Tween 80), 0.3 part of dispersing aid.
  • the components are weighed into the containers customary in paint technology and mixed with a dissolver.
  • the tensile strength and elongation at break can be controlled in a wide range with the described acrylated polyether polyol without significantly influencing the other paint film properties (reactivity, chemical resistance, surface smoothness).
  • the varnish has good sprayability at room temperature as well as an excellent pore pattern on wood or veneer.
  • the paint has excellent weathering stability.

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  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Paints Or Removers (AREA)
  • Macromonomer-Based Addition Polymer (AREA)
  • Compositions Of Macromolecular Compounds (AREA)

Abstract

L'invention concerne un polyol de polyéther acrylé constitué d'un polyol éthoxylé ayant un poids moléculaire compris entre 600 et 1000, de préférence entre 700 et 900, estérifié avec de l'acide acrylique.
EP96933395A 1995-09-27 1996-09-26 Polyol de polyether acryle et son utilisation pour la production de compositions durcissables par rayonnement Withdrawn EP0852593A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19535936A DE19535936A1 (de) 1995-09-27 1995-09-27 Acryliertes Polyetherpolyol und dessen Verwendung für strahlenhärtbare Formulierungen
DE19535936 1995-09-27
PCT/EP1996/004199 WO1997011982A1 (fr) 1995-09-27 1996-09-26 Polyol de polyether acryle et son utilisation pour la production de compositions durcissables par rayonnement

Publications (1)

Publication Number Publication Date
EP0852593A1 true EP0852593A1 (fr) 1998-07-15

Family

ID=7773323

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96933395A Withdrawn EP0852593A1 (fr) 1995-09-27 1996-09-26 Polyol de polyether acryle et son utilisation pour la production de compositions durcissables par rayonnement

Country Status (5)

Country Link
US (1) US6090866A (fr)
EP (1) EP0852593A1 (fr)
JP (1) JPH11512757A (fr)
DE (1) DE19535936A1 (fr)
WO (1) WO1997011982A1 (fr)

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CA2345061A1 (fr) * 1999-08-09 2001-02-15 Camille Rechel Rubans de fibres optiques thermopelables
BR0212501A (pt) * 2001-09-12 2004-08-24 Dow Global Technologies Inc ésteres hidróxi-funcionais tendo grupos acrilato-funcionais terminais
US7160975B2 (en) * 2004-08-02 2007-01-09 Bayer Materialscience Llc Methacrylates as stabilizers for polymer polyols
US7371335B2 (en) 2004-10-21 2008-05-13 E.I. Dupont De Nemours And Company Curable thick film compositions for use in moisture control
JP5192373B2 (ja) * 2005-06-20 2013-05-08 ダウ グローバル テクノロジーズ エルエルシー 窓ガラス用保護被覆
US7781493B2 (en) 2005-06-20 2010-08-24 Dow Global Technologies Inc. Protective coating for window glass
US7786183B2 (en) * 2005-06-20 2010-08-31 Dow Global Technologies Inc. Coated glass articles
CN101903483B (zh) 2007-12-18 2014-09-10 陶氏环球技术公司 对玻璃粘合剂具有增强的粘合性的窗玻璃用保护涂层
BRPI0914502A2 (pt) 2008-12-23 2016-01-12 Du Pont "met(acrilato) de politrimetileno éter glicol"
EP3737722B1 (fr) 2018-09-10 2022-03-16 Sun Chemical Corporation Compositions durcissables par énergie comprenant des produits de réaction d'éthers de glycidyle contenant du poly(oxyde d'alkylène) et d'acide acrylique
CN113943521B (zh) * 2020-07-17 2025-04-22 宣伟(广东)新材料有限公司 一种耐黄变的可uv-led固化的涂料组合物
CN117545787A (zh) * 2021-06-29 2024-02-09 陶氏环球技术有限责任公司 多元醇和由其制备的泡沫

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Also Published As

Publication number Publication date
DE19535936A1 (de) 1997-04-03
US6090866A (en) 2000-07-18
JPH11512757A (ja) 1999-11-02
WO1997011982A1 (fr) 1997-04-03

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