EP3055339A1 - Polyfunctional urethane(meth)acrylates consisting of low-monomer diisocyanate monoadducts - Google Patents

Polyfunctional urethane(meth)acrylates consisting of low-monomer diisocyanate monoadducts

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Publication number
EP3055339A1
EP3055339A1 EP14777320.4A EP14777320A EP3055339A1 EP 3055339 A1 EP3055339 A1 EP 3055339A1 EP 14777320 A EP14777320 A EP 14777320A EP 3055339 A1 EP3055339 A1 EP 3055339A1
Authority
EP
European Patent Office
Prior art keywords
diisocyanate
meth
urethane
hexahydro
acrylates
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Withdrawn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
EP14777320.4A
Other languages
German (de)
French (fr)
Inventor
Emmanouil Spyrou
Holger Loesch
Marion EWALD
Laura RAMON-GIMENEZ
Andrea THESING
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.)
Evonik Operations GmbH
Original Assignee
Evonik Degussa 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 Evonik Degussa GmbH filed Critical Evonik Degussa GmbH
Publication of EP3055339A1 publication Critical patent/EP3055339A1/en
Withdrawn legal-status Critical Current

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    • 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
    • C08G18/00—Polymeric products of isocyanates or isothiocyanates
    • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/70—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the isocyanates or isothiocyanates used
    • C08G18/72—Polyisocyanates or polyisothiocyanates
    • C08G18/74—Polyisocyanates or polyisothiocyanates cyclic
    • C08G18/75—Polyisocyanates or polyisothiocyanates cyclic cycloaliphatic
    • C08G18/751—Polyisocyanates or polyisothiocyanates cyclic cycloaliphatic containing only one cycloaliphatic ring
    • C08G18/752—Polyisocyanates or polyisothiocyanates cyclic cycloaliphatic containing only one cycloaliphatic ring containing at least one isocyanate or isothiocyanate group linked to the cycloaliphatic ring by means of an aliphatic group
    • C08G18/753—Polyisocyanates or polyisothiocyanates cyclic cycloaliphatic containing only one cycloaliphatic ring containing at least one isocyanate or isothiocyanate group linked to the cycloaliphatic ring by means of an aliphatic group containing one isocyanate or isothiocyanate group linked to the cycloaliphatic ring by means of an aliphatic group having a primary carbon atom next to the isocyanate or isothiocyanate group
    • C08G18/755—Polyisocyanates or polyisothiocyanates cyclic cycloaliphatic containing only one cycloaliphatic ring containing at least one isocyanate or isothiocyanate group linked to the cycloaliphatic ring by means of an aliphatic group containing one isocyanate or isothiocyanate group linked to the cycloaliphatic ring by means of an aliphatic group having a primary carbon atom next to the isocyanate or isothiocyanate group and at least one isocyanate or isothiocyanate group linked to a secondary carbon atom of the cycloaliphatic ring, e.g. isophorone diisocyanate
    • 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
    • C08G18/00—Polymeric products of isocyanates or isothiocyanates
    • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/08—Processes
    • C08G18/16—Catalysts
    • C08G18/18—Catalysts containing secondary or tertiary amines or salts thereof
    • C08G18/1808—Catalysts containing secondary or tertiary amines or salts thereof having alkylene polyamine groups
    • 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
    • C08G18/00—Polymeric products of isocyanates or isothiocyanates
    • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/08—Processes
    • C08G18/16—Catalysts
    • C08G18/22—Catalysts containing metal compounds
    • C08G18/227—Catalysts containing metal compounds of antimony, bismuth or arsenic
    • 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
    • C08G18/00—Polymeric products of isocyanates or isothiocyanates
    • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/08—Processes
    • C08G18/16—Catalysts
    • C08G18/22—Catalysts containing metal compounds
    • C08G18/24—Catalysts containing metal compounds of tin
    • C08G18/244—Catalysts containing metal compounds of tin tin salts of carboxylic acids
    • 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
    • C08G18/00—Polymeric products of isocyanates or isothiocyanates
    • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/08—Processes
    • C08G18/16—Catalysts
    • C08G18/22—Catalysts containing metal compounds
    • C08G18/24—Catalysts containing metal compounds of tin
    • C08G18/244—Catalysts containing metal compounds of tin tin salts of carboxylic acids
    • C08G18/246—Catalysts containing metal compounds of tin tin salts of carboxylic acids containing also tin-carbon bonds
    • 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
    • C08G18/00—Polymeric products of isocyanates or isothiocyanates
    • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
    • C08G18/30—Low-molecular-weight compounds
    • C08G18/32—Polyhydroxy compounds; Polyamines; Hydroxyamines
    • C08G18/3203—Polyhydroxy compounds
    • C08G18/3206—Polyhydroxy compounds aliphatic
    • 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
    • C08G18/00—Polymeric products of isocyanates or isothiocyanates
    • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
    • C08G18/40—High-molecular-weight compounds
    • C08G18/42—Polycondensates having carboxylic or carbonic ester groups in the main chain
    • 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
    • C08G18/00—Polymeric products of isocyanates or isothiocyanates
    • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
    • C08G18/40—High-molecular-weight compounds
    • C08G18/42—Polycondensates having carboxylic or carbonic ester groups in the main chain
    • C08G18/4266—Polycondensates having carboxylic or carbonic ester groups in the main chain prepared from hydroxycarboxylic acids and/or lactones
    • C08G18/4269—Lactones
    • C08G18/4277—Caprolactone and/or substituted caprolactone
    • 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
    • C08G18/00—Polymeric products of isocyanates or isothiocyanates
    • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
    • C08G18/40—High-molecular-weight compounds
    • C08G18/48—Polyethers
    • C08G18/4829—Polyethers containing at least three hydroxy groups
    • 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
    • C08G18/00—Polymeric products of isocyanates or isothiocyanates
    • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
    • C08G18/67—Unsaturated compounds having active hydrogen
    • C08G18/671—Unsaturated compounds having only one group containing active hydrogen
    • C08G18/672—Esters of acrylic or alkyl acrylic acid having only one group containing active hydrogen
    • 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
    • C08G18/00—Polymeric products of isocyanates or isothiocyanates
    • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/70—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the isocyanates or isothiocyanates used
    • C08G18/81—Unsaturated isocyanates or isothiocyanates
    • C08G18/8141—Unsaturated isocyanates or isothiocyanates masked
    • C08G18/815—Polyisocyanates or polyisothiocyanates masked with unsaturated compounds having active hydrogen
    • C08G18/8158—Polyisocyanates or polyisothiocyanates masked with unsaturated compounds having active hydrogen with unsaturated compounds having only one group containing active hydrogen
    • C08G18/8175—Polyisocyanates or polyisothiocyanates masked with unsaturated compounds having active hydrogen with unsaturated compounds having only one group containing active hydrogen with esters of acrylic or alkylacrylic acid having only one group containing active hydrogen
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D175/00—Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
    • C09D175/04—Polyurethanes
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J175/00—Adhesives based on polyureas or polyurethanes; Adhesives based on derivatives of such polymers
    • C09J175/04—Polyurethanes

Definitions

  • the invention relates to polyfunctional urethane (meth) acrylates from monomer poor
  • polymerizable resins usually consist of hydroxyl-containing resins, diisocyanates and compounds containing both an alcohol group and an activated double bond, eg. B. hydroxyethyl acrylate (HEA).
  • HOA hydroxyethyl acrylate
  • Urethane (meth) acrylates are characterized in the cured coating by an excellent balance between hardness and flexibility.
  • urethane acrylates A major disadvantage of such urethane acrylates is their high viscosity, especially if they are based on higher functionality alcohols (functionality> 3). Due to the high viscosity, the application in radically polymerizable coating systems,
  • the object of the present invention was to find higher-functionality urethane (meth) acrylates which have at least 30% lower viscosity than conventional products. Both the intrinsic viscosity and the viscosity in solution are important.
  • the object has been achieved by the use of monomer-poor adducts of diisocyanates and compounds containing both an alcohol group and an activated double bond in the urethane (meth) acrylate preparation.
  • Tg glass transition points
  • these Tg can range from temperatures well below 0 ° C to well over 100 ° C (eg for powder coating applications). If one tries to modify such a hydroxy-functional resin in a radiation-curable resin, for. As by the reaction with diisocyanates and HEA, the viscosity of the final product depends primarily on the Tg of the starting resin. But if you try based on one certain OH resin to achieve the lowest possible viscosity, the inventive method offers significant advantages over the prior art.
  • the invention relates to urethane (meth) acrylates, from the reaction product of
  • component B) at least one resin component having at least three OH groups per molecule; wherein on each OH group of component B) 0.2 to 1, 1 NCO equivalents of component A) is omitted.
  • Alcohol group as well as an activated double bond contained have already been described in EP 2 367 864 and in EP 1 179 555. They are usually prepared so that an excess of diisocyanate with a compound containing both an alcohol group and an activated double bond, for. As hydroxyethyl, completely at temperatures between 40 - 80 ° C is reacted. Thereafter, the excess diisocyanate is separated by distillation, usually in a thin-layer or a short-path evaporator. Frequently, special inhibitors must be used for this purpose and, in addition, special distillation conditions must be maintained so that the residue does not polymerize.
  • isocyanates a1) are aliphatic, cycloaliphatic and araliphatic, d. H.
  • aryl-substituted aliphatic diisocyanates as used, for example, in Houben-Weyl, Methods of Organic Chemistry, Volume 14/2, pages 61-70 and in the article by W. Siefken,
  • TMDI Trimethyl-1,6-hexamethylene diisocyanate
  • TMDI 2,4,4-trimethyl-1,6-hexamethylene diisocyanate
  • TMDI 1,9-diisocyanato-5-methylnonane
  • 1,8-diisocyanato-2,4 dimethyloctane 1,1-dodecane diisocyanate
  • ⁇ , ⁇ '-diisocyanatodipropyl ether cyclobutene-1,3-diisocyanate
  • cyclohexane-1,3-diisocyanate cyclohexane-1,4-diisocyanate
  • the enumerated diisocyanates can be used alone or in any desired mixtures.
  • Aliphatic and cycloaliphatic diisocyanates are particularly preferably used, selected from IPDI, HDI, TMDI, and H 12 MDI (pure H 12 MDI isomers or their
  • Suitable preferred reactive olefinic compounds a2) are all compounds which carry both at least one methacrylate or acrylate function or vinyl ether group, as well as exactly one hydroxyl group.
  • Other ingredients may include aliphatic,
  • Hydroxyhexyl Of course, mixtures can also be used. Hydroxyethyl acrylate is particularly preferably used.
  • reaction of polyisocyanates with reactive olefinic compounds involves the reaction of the free NCO groups with hydroxyl groups and has become common
  • organometallic compounds such as. Dibutyltin dilaurate (DBTL)
  • DBTL Dibutyltin dilaurate
  • the NCO / OH ratio is 2: 1 to 40: 1, preferably 2: 1 to 9.8: 1 and more preferably 3: 1 to 8: 1. This corresponds to a reaction of 1 to 20 mol, preferably 1 to 4.9 mol, more preferably 1 to 5 mol of diisocyanate A), with 1 mol of a reactive olefinic compound a2).
  • the content of free diisocyanate of less than 5 wt .-%, preferably less than 1 wt .-% and particularly preferably less than 0.5 wt .-%, on.
  • Compounds containing both an alcohol group and an activated double bond have a content of free diisocyanate of less than 5 wt .-%, preferably less than 1 wt .-% and particularly preferably less than 0.5 wt .-%, on.
  • Monoadducts a content of free NCO of 10.4 - 16.4 wt .-% to.
  • Suitable resin components having at least three OH groups per molecule B) are polyesters, polycaprolactones, polyethers, poly (meth) acrylates, polycarbonates and polyurethanes, and also monomeric polyols having an OH functionality> 3 and an OH number from 5 to 2000 mg KOH / gram and an average molecular weight of 92 to 30,000 g / mol. Preference is given to using polyols having an OH number of 30 to 200 mg KOH / gram and an average molecular weight of 840 to 5600 g / mol. Particularly preferred polyols are polyesters and / or polyethers.
  • the amount of resin component B) containing OH groups is selected so that 0.2 to 1.1 NCO equivalents of component A) are eliminated for each OH group of component B).
  • the invention also provides a process for the preparation of
  • component A) involves the reaction of the free NCO groups with hydroxyl groups and has been described frequently
  • Reaction can take place either with solvent, but also preferably without solvent. It is usually carried out in a temperature range between 40 and 80 ° C and can be advantageously by conventional catalysts known in urethane, such.
  • Suitable reaction units are all customary apparatus, boilers, static mixers, extruders, etc., preferably
  • the viscosity in substance is measured at a suitable temperature between RT and 100 ° C according to DIN EN ISO 3219.
  • the viscosity in solution is in a suitable
  • Solvents e.g. B. in a reactive diluent, measured at 23 ° C according to DIN EN ISO 3219.
  • Suitable reactive diluents are all common liquid components which carry at least one polymerizable group, for. Acrylates, methacrylates, vinyl ethers, etc. Examples of such reactive diluents are hexanediol diacrylate,
  • the invention also provides the use of the urethane acrylates described in radiation-curing formulations of all kinds.
  • the mixture is then saturated with dry air and the unreacted diisocyanate by short path distillation (KDL 4, UIC GmbH, Alzenau -Hoerstein) with 200 g / h at 150 ° C and 2 mbar separated, with a steady influx of dry air in countercurrent passed through the apparatus.
  • KDL 4 UIC GmbH, Alzenau -Hoerstein
  • the product has an NCO content of 12.0 wt .-% and a monomer content of 0.3 wt .-%.
  • the solvent is completely removed in vacuo.
  • the viscosity at 100 ° C is 57 Pas.
  • the viscosity 30% in HDDA is 0.07 Pas.
  • trifunctional polyols is significantly lower when low-monomer IPDI-HEA is used, it is now shown that the viscosity of difunctional polyols is about the same.

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Polyurethanes Or Polyureas (AREA)
  • Macromonomer-Based Addition Polymer (AREA)

Abstract

The invention relates to polyfunctional urethane(meth)acrylates consisting of low-monomer diisocyanate monoadducts.

Description

Polyfunktionelle Urethan(meth)acrylate aus Monomer armen Diisocyanat- Monoaddukten  Polyfunctional urethane (meth) acrylates from monomer poor diisocyanate monoadducts
Die Erfindung betrifft polyfunktionelle Urethan(meth)acrylate aus Monomer armen The invention relates to polyfunctional urethane (meth) acrylates from monomer poor
Diisocyanat-Monoaddukten. Diisocyanate monoadduct.
Urethan(meth)acrylate nehmen einen wichtigen Platz innerhalb der radikalisch Urethane (meth) acrylates occupy an important place within the radical
polymerisierbaren Harze ein. Sie bestehen in der Regel aus hydroxylgruppenhaltigen Harzen, Diisocyanaten und Verbindungen, die sowohl ein Alkoholgruppe als auch eine aktivierte Doppelbindung enthalten, z. B. Hydroxyethylacrylat (HEA). Solche polymerizable resins. They usually consist of hydroxyl-containing resins, diisocyanates and compounds containing both an alcohol group and an activated double bond, eg. B. hydroxyethyl acrylate (HEA). Such
Urethan(meth)acrylate (Sammelbezeichnung sowohl für Urethanacrylate, als auch für Urethanmethacrylate) zeichnen sich in der ausgehärteten Beschichtung durch eine hervorragende Balance zwischen Härte und Flexibilität aus. Urethane (meth) acrylates (collective term for both urethane acrylates and urethane methacrylates) are characterized in the cured coating by an excellent balance between hardness and flexibility.
Ein wesentlicher Nachteil solcher Urethanacrylate besteht in Ihrer hohen Viskosität, vor allem wenn Sie auf höherfunktionellen Alkoholen (Funktionalität > 3) beruhen. Durch die hohe Viskosität wird die Anwendung in radikalisch polymerisierbaren Lacksystemen, A major disadvantage of such urethane acrylates is their high viscosity, especially if they are based on higher functionality alcohols (functionality> 3). Due to the high viscosity, the application in radically polymerizable coating systems,
Klebstoffsystemen und Dichtstoffsystemen erschwert. Adhesive systems and sealant systems difficult.
Aufgabe der vorliegenden Erfindung war es, höherfunktionelle Urethan(meth)acrylate zu finden, die eine mindestens 30 % geringere Viskosität als herkömmliche Produkte aufweisen. Dabei ist sowohl die eigene Viskosität in Substanz als auch die Viskosität in Lösung von Bedeutung. The object of the present invention was to find higher-functionality urethane (meth) acrylates which have at least 30% lower viscosity than conventional products. Both the intrinsic viscosity and the viscosity in solution are important.
Die Aufgabe wurde gelöst, durch die Verwendung von Monomer armen Addukten aus Diisocyanaten und Verbindungen, die sowohl ein Alkoholgruppe als auch eine aktivierte Doppelbindung enthalten, bei der Urethan(meth)acrylat Herstellung. The object has been achieved by the use of monomer-poor adducts of diisocyanates and compounds containing both an alcohol group and an activated double bond in the urethane (meth) acrylate preparation.
Die Eigenschaften von Lack-, Klebstoff- und Dichtstoffsystemen hängen in der Regel in hohem Masse von den verwendeten Harzen ab. Je nach Einsatzgebiet können diese unterschiedliche chemische Zusammensetzungen, sowie physikalischen Kenndaten, z. B. Glasübergangspunkte, Tg, haben. Diese Tg können von Temperaturen deutlich unter 0 °C bis weit über 100 °C reichen (z.B. für Pulverlackanwendungen). Versucht man ein solches hydroxyfunktionelles Harz in ein strahlenhärtbares Harz zu modifizieren, z. B. durch die Reaktion mit Diisocyanaten und HEA, so hängt die Viskosität des Endproduktes in erster Linie von dem Tg des Ausgangsharzes ab. Versucht man aber basierend auf einem bestimmten OH-Harz eine möglichst geringe Viskosität zu erzielen bietet das erfindungsgemäße Verfahren signifikante Vorteile gegenüber dem Stand der Technik. The properties of paint, adhesive and sealant systems generally depend largely on the resins used. Depending on the application, these different chemical compositions, as well as physical characteristics, eg. B. glass transition points, Tg, have. These Tg can range from temperatures well below 0 ° C to well over 100 ° C (eg for powder coating applications). If one tries to modify such a hydroxy-functional resin in a radiation-curable resin, for. As by the reaction with diisocyanates and HEA, the viscosity of the final product depends primarily on the Tg of the starting resin. But if you try based on one certain OH resin to achieve the lowest possible viscosity, the inventive method offers significant advantages over the prior art.
Überraschend hat es sich gezeigt, dass in der Reaktion Monomer armer Addukte mit hydroxylgruppenhaltigen Harzen vor allem dann eine verringerte Viskosität auftritt, wenn die OH-Funktionalität dieser Harze mindestens 3 oder höher ist. Surprisingly, it has been found that in the reaction of monomer poor adducts with hydroxyl-containing resins, especially a reduced viscosity occurs when the OH functionality of these resins is at least 3 or higher.
Gegenstand der Erfindung sind Urethan(meth)acrylate, aus dem Reaktionprodukt von The invention relates to urethane (meth) acrylates, from the reaction product of
A) Monomer armen 1 : 1 Monoaddukten aus a1 ) Diisocyanaten A) Monomer poor 1: 1 monoadducts from a1) diisocyanates
und  and
a2) Verbindungen, die sowohl eine Alkoholgruppe als auch eine aktivierte  a2) Compounds that have both an alcohol group and one activated
Doppelbindung enthalten, mit einem Gehalt an freiem Diisocyanat von unter 5 Gew.-%, mit  Containing double bond, with a content of free diisocyanate of less than 5 wt .-%, with
B) mindestens einer Harzkomponente mit mindestens drei OH-Gruppen pro Molekül; wobei auf jede OH-Gruppe der Komponente B) 0,2 bis 1 ,1 NCO- Äquivalente der Komponente A) entfällt.  B) at least one resin component having at least three OH groups per molecule; wherein on each OH group of component B) 0.2 to 1, 1 NCO equivalents of component A) is omitted.
Monomer arme Addukte A) aus Diisocyanaten und Verbindungen, die sowohl eine Monomer poor adducts A) from diisocyanates and compounds containing both a
Alkoholgruppe als auch eine aktivierte Doppelbindung enthalten, wurden bereits in der EP 2 367 864 sowie in der EP 1 179 555 beschrieben. Sie werden in der Regel so hergestellt, dass ein Überschuss an Diisocyanat mit einer Verbindung, das sowohl ein Alkoholgruppe als auch eine aktivierte Doppelbindung enthält, z. B. Hydroxyethylacrylat, vollständig bei Temperaturen zwischen 40 - 80 °C umgesetzt wird. Danach wird das überschüssige Diisocyanat destillativ abgetrennt, in der Regel in einem Dünnschicht- oder einem Kurzwegverdampfer. Häufig müssen dazu spezielle Inhibitoren eingesetzt werden und zusätzlich besondere Destillationsbedingungen eingehalten werden, damit der Rückstand nicht polymerisiert. Als Isocyanate a1 ) eignen sich aliphatische, cycloaliphatische und araliphatische, d. h. Alcohol group as well as an activated double bond contained have already been described in EP 2 367 864 and in EP 1 179 555. They are usually prepared so that an excess of diisocyanate with a compound containing both an alcohol group and an activated double bond, for. As hydroxyethyl, completely at temperatures between 40 - 80 ° C is reacted. Thereafter, the excess diisocyanate is separated by distillation, usually in a thin-layer or a short-path evaporator. Frequently, special inhibitors must be used for this purpose and, in addition, special distillation conditions must be maintained so that the residue does not polymerize. As isocyanates a1) are aliphatic, cycloaliphatic and araliphatic, d. H.
arylsubstituierte aliphatische Diisocyanate, wie sie beispielsweise im Houben-Weyl, Methoden der organischen Chemie, Band 14/2, Seiten 61 - 70 und im Artikel von W. Siefken,aryl-substituted aliphatic diisocyanates, as used, for example, in Houben-Weyl, Methods of Organic Chemistry, Volume 14/2, pages 61-70 and in the article by W. Siefken,
Justus Liebigs Annalen der Chemie 562, 75 - 136, beschrieben werden, wie z. B. Justus Liebigs Annalen der Chemie 562, 75-136, be described as. B.
1 ,2-Ethylendiisocyanat, 1 ,4-Tetramethylendiisocyanat, 1 ,6-Hexamethylendiisocyanat (HDI), 1, 2-ethylene diisocyanate, 1, 4-tetramethylene diisocyanate, 1, 6-hexamethylene diisocyanate (HDI),
2.2.4- Trimethyl-1 ,6-hexamethylendiisocyanat (TMDI), 2,4,4-Trimethyl-1 ,6- hexamethylendiisocyanat (TMDI)1 ,9-Diisocyanato-5-methylnonan, 1 ,8-Diisocyanato-2,4- dimethyloctan, 1 ,12-Dodecandiisocyanat, ω,ω'-Diisocyanatodipropylether, Cyclobuten-1 ,3- diisocyanat, Cyclohexan-1 ,3-diisocyanat, Cyclohexan-1 ,4-diisocyanat, 3-lsocyanatomethyl-2.2.4- Trimethyl-1,6-hexamethylene diisocyanate (TMDI), 2,4,4-trimethyl-1,6-hexamethylene diisocyanate (TMDI) 1,9-diisocyanato-5-methylnonane, 1,8-diisocyanato-2,4 dimethyloctane, 1,1-dodecane diisocyanate, ω, ω'-diisocyanatodipropyl ether, cyclobutene-1,3-diisocyanate, cyclohexane-1,3-diisocyanate, cyclohexane-1,4-diisocyanate, 3-isocyanatomethyl-
3.5.5- trimethyl-cyclohexylisocyanat (Isophorondiisocyanat, IPDI), 1 ,4-Diisocyanatomethyl- 2,3,5,6-tetramethyl-cyclohexan, Decahydro-8-methyl-(1 ,4-methanol-naphthalin-2,5- ylendimethylendiisocyanat, , Decahydro-8-methyl-(1 ,4-methanol-naphthalin-3,5- ylendimethylendiisocyanat, Hexahydro-4,7-methano-indan-1 ,5- ylendimethylendiisocyanat, Hexahydro-4,7-methano-indan-2,5- ylendimethylendiisocyanat, Hexahydro-4,7-methano- indan-1 ,6- ylendimethylendiisocyanat, Hexahydro-4,7-methano-indan-2,5- ylendimethylendiisocyanat, Hexahydro-4,7-methanoindan-1 ,5-ylendiisocyanat, Hexahydro- 4,7-methanoindan-2,5-ylendiisocyanat, Hexahydro-4,7-methanoindan-1 ,6-ylendiisocyanat, Hexahydro-4,7-methanoindan-2,6-ylendiisocyanat, 2,4-Hexahydrotoluylendiisocyanat, 2,6- Hexahydrotoluylendiisocyanat, 4,4'-Methylendicyclohexyldiisocyanat (4,4'-H12MDI), 2,2'- Methylendicyclohexyl-diisocyanat (2,2'-H12MDI), 2,4-Methylendicyclohexyldiisocyanat (2,4- H12MDI) oder auch Mischungen dieser Isomeren, 4,4'-Diisocyanato-3,3',5,5'- tetramethyldicyclohexylmethan, 4,4'-Diisocyanato-2,2',3,3',5,5',6,6'- octamethyldicyclohexylmethan, ω,ω'-Diisocyanato-l ,4-diethylbenzol, 1 ,4- Diisocyanatomethyl-2,3,5,6-tetramethylbenzol, 2-Methyl-1 ,5-diisocyanatopentan (MPDI), 2- Ethyl-1 ,4-diisocyanatobutan, 1 ,10-Diisocyanatodecan, 1 ,5-Diisocyanatohexan, 1 ,3- Diisocyanatomethylcyclohexan, 1 ,4-Diisocyanatomethylcyclohexan sowie beliebige 3.5.5- trimethylcyclohexyl isocyanate (isophorone diisocyanate, IPDI), 1,4-diisocyanatomethyl-2,3,5,6-tetramethylcyclohexane, decahydro-8-methyl- (1,4-methanol-naphthalene-2,5-) ylene dimethylene diisocyanate, decahydro-8-methyl- (1,4-methanol-naphthalene-3,5-ylene dimethylene diisocyanate, hexahydro-4,7-methanoindan-1, 5-ylene diisocyanate, hexahydro-4,7-methano-indane 2,5-yl-dimethyl-diisocyanate, hexahydro-4,7-methano-indan-1, 6-yl-dimethyl-diisocyanate, hexahydro-4,7-methano-indan-2,5-yl-dimethyl-diisocyanate, hexahydro-4,7-methanoindan-1, 5 ylene diisocyanate, hexahydro-4,7-methanoindan-2,5-ylene diisocyanate, hexahydro-4,7-methanoindan-1, 6-ylene diisocyanate, hexahydro-4,7-methanoindan-2,6-ylene diisocyanate, 2,4-hexahydrotoluylene diisocyanate, 2,6-hexahydrotoluylene diisocyanate, 4,4'-methylenedicyclohexyl diisocyanate (4,4'-H 12 MDI), 2,2'-methylenedicyclohexyl diisocyanate (2,2'-H 12 MDI), 2,4-methylenedicyclohexyl diisocyanate (2, 4-H 12 MDI) or mixtures of these isomers, 4,4'-diisocyanate nato-3,3 ', 5,5'-tetramethyldicyclohexylmethane, 4,4'-diisocyanato-2,2', 3,3 ', 5,5', 6,6'-octamethyldicyclohexylmethane, ω, ω'-diisocyanato l, 4-diethylbenzene, 1, 4-diisocyanatomethyl-2,3,5,6-tetramethylbenzene, 2-methyl-1,5-diisocyanatopentane (MPDI), 2-ethyl-1,4-diisocyanatobutane, 1, 10-diisocyanatodecane , 1, 5-diisocyanatohexane, 1, 3-diisocyanatomethylcyclohexane, 1, 4-diisocyanatomethylcyclohexane and any
Gemische dieser Verbindungen. Weitere geeignete Isocyanate werden in dem genannten Artikel in den Annalen auf Seite 122 f. beschrieben. Auch 2,5- Bis(isocyanatomethyl)bicyclo[2.2.1 ]heptan (NBDI)und/oder (2,6)- Bis(isocyanatomethyl)bicyclo[2.2.1]heptan (NBDI) sind in Reinsubstanz oder als Mixtures of these compounds. Further suitable isocyanates are mentioned in the said article in the annals on page 122 f. described. Also 2,5-bis (isocyanatomethyl) bicyclo [2.2.1] heptane (NBDI) and / or (2,6) - bis (isocyanatomethyl) bicyclo [2.2.1] heptane (NBDI) are in the pure substance or as
Mischkomponente geeignet. Die Herstellung dieser Diisocyanate wird heutzutage in der Regel entweder über die Phosgenroute oder über das Harnstoffverfahren durchgeführt. Die Produkte beider Methoden sind gleichermaßen für die Verwendung im erfindungsgemäßen Verfahren geeignet. Mixed component suitable. The preparation of these diisocyanates is nowadays usually carried out either via the phosgene route or via the urea process. The products of both methods are equally suitable for use in the process according to the invention.
Es können die aufgezählten Diisocyanate allein oder in beliebigen Mischungen eingesetzt werden. Besonders bevorzugt werden aliphatische und cycloaliphatische Diisocyanate eingesetzt, ausgewählt aus IPDI, HDI, TMDI, und H12MDI (reine H12MDI-lsomere oder deren The enumerated diisocyanates can be used alone or in any desired mixtures. Aliphatic and cycloaliphatic diisocyanates are particularly preferably used, selected from IPDI, HDI, TMDI, and H 12 MDI (pure H 12 MDI isomers or their
Isomerengemische), allein oder in beliebigen Mischungen. Als Verbindungen a2), die sowohl eine Alkoholgruppe als auch eine aktivierte Doppelbindung enthalten, sind prinzipiell alle derartige Verbindungen geeignet. Isomer mixtures), alone or in any mixtures. As compounds a2) which contain both an alcohol group and an activated double bond, in principle all such compounds are suitable.
Geeignete bevorzugte reaktive olefinische Verbindungen a2) sind alle Verbindungen, die sowohl mindestens eine Methacrylat- oder Acrylatfunktion oder Vinylethergruppe tragen, als auch genau eine Hydroxylgruppe. Weitere Bestandteile können aliphatische, Suitable preferred reactive olefinic compounds a2) are all compounds which carry both at least one methacrylate or acrylate function or vinyl ether group, as well as exactly one hydroxyl group. Other ingredients may include aliphatic,
cycloaliphatische, aromatische oder heterocyclische Alkylgruppen sein. Auch Oligomere oder Polymere sind denkbar. cycloaliphatic, aromatic or heterocyclic alkyl groups. Oligomers or polymers are also conceivable.
Bevorzugt eingesetzt werden Hydroxyethylacrylat, Hydroxypropylacrylat, Hydroxybutylacrylat und Hydroxyethylmethacrylat, Hydroxypropylmethacrylat, Hydroxybutylmethacrylat,  Preference is given to using hydroxyethyl acrylate, hydroxypropyl acrylate, hydroxybutyl acrylate and hydroxyethyl methacrylate, hydroxypropyl methacrylate, hydroxybutyl methacrylate,
Glycerindiacrylat, Pentaerythroltriacrylat, Trimethylolpropandiacrylat, Glycerindimethacrylat, Pentaerythroltrimethacrylat und Trimethylolpropandimethacrylat, Hydroxyethylvinylether, Hydroxypropylvinylether, Hydroxybutylvinylether Hydroxypentylvinylether und/oder Glycerol diacrylate, pentaerythritol triacrylate, trimethylolpropane diacrylate, glycerol dimethacrylate, pentaerythritol trimethacrylate and trimethylolpropane dimethacrylate, hydroxyethyl vinyl ether, hydroxypropyl vinyl ether, hydroxybutyl vinyl ether, hydroxypentyl vinyl ether and / or
Hydroxyhexylvinylether. Auch Mischungen können selbstverständlich eingesetzt werden. Besonders bevorzugt wird Hydroxyethylacrylat eingesetzt. Hydroxyhexyl. Of course, mixtures can also be used. Hydroxyethyl acrylate is particularly preferably used.
Die Umsetzung von Polyisocyanaten mit reaktiven olefinischen Verbindungen beinhaltet die Reaktion der freien NCO-Gruppen mit Hydroxylgruppen und wurde schon häufig The reaction of polyisocyanates with reactive olefinic compounds involves the reaction of the free NCO groups with hydroxyl groups and has become common
beschrieben (EP 0 669 353, EP 0 669 354, DE 30 30 572, EP 0 639 598 oder (EP 0 669 353, EP 0 669 354, DE 30 30 572, EP 0 639 598 or US Pat
EP 0 803 524). Diese Reaktion kann entweder mit aber auch ohne Lösemittel stattfinden. Sie wird in der Regel in einem Temperaturbereich zwischen 40 und 80 °C durchgeführt und lässt sich vorteilhaft durch gängige in der Urethanchemie bekannte Katalysatoren, wie z. B. EP 0 803 524). This reaction can take place either with but also without solvent. It is usually carried out in a temperature range between 40 and 80 ° C and can be advantageously by conventional catalysts known in urethane, such. B.
metallorganische Verbindungen, wie z. B. Dibutylzinndilaurat (DBTL), organometallic compounds, such as. Dibutyltin dilaurate (DBTL),
Dibutylzinndineodecanoat, Zinkoctoat, oder Bismuthneodecanoat; aber auch tertiäre Amine, z. B. Triethylamin oder Diazabicyclooctan, katalysieren.. Als Reaktionsaggregate eignen sich alle üblichen Apparaturen, Kessel, Statik-Mischer, Extruder usw., vorzugsweise Aggregate, die über eine Misch- oder Rührfunktion verfügen. Das NCO/OH Verhältnis beträgt 2 : 1 bis 40 : 1 bevorzugt 2 : 1 bis 9,8 : 1 und besonders bevorzugt 3 : 1 bis 8 : 1 . Dies entspricht einer Umsetzung von 1 - 20 mol, bevorzugt 1 - 4,9 mol, besonders bevorzugt 1 ,5 - 4 mol Diisocyanat A), mit 1 mol einer reaktiven olefinischen Verbindung a2). Dibutyltin dineodecanoate, zinc octoate, or bismuth neodecanoate; but also tertiary amines, eg. Suitable reaction units are all customary apparatuses, boilers, static mixers, extruders, etc., preferably aggregates which have a mixing or stirring function. The NCO / OH ratio is 2: 1 to 40: 1, preferably 2: 1 to 9.8: 1 and more preferably 3: 1 to 8: 1. This corresponds to a reaction of 1 to 20 mol, preferably 1 to 4.9 mol, more preferably 1 to 5 mol of diisocyanate A), with 1 mol of a reactive olefinic compound a2).
Die erfindungsgemäßen Monomer armen 1 : 1 Monoaddukten A) aus a1 ) Diisocyanaten und a2) Verbindungen, die sowohl eine Alkoholgruppe als auch eine aktivierte Doppelbindung enthalten, weisen einen Gehalt an freien Diisocyanat von unter 5 Gew.-%, bevorzugt unter 1 Gew.-% und besonders bevorzugt unter 0,5 Gew.-%, auf. Bevorzugt weisen die The monomers according to the invention poor 1: 1 monoadducts A) from a1) diisocyanates and a2) Compounds containing both an alcohol group and an activated double bond have a content of free diisocyanate of less than 5 wt .-%, preferably less than 1 wt .-% and particularly preferably less than 0.5 wt .-%, on. Preferably, the
Monoaddukte einen Gehalt an freiem NCO von 10,4 - 16,4 Gew.-% auf. Monoadducts a content of free NCO of 10.4 - 16.4 wt .-% to.
Als Harzkomponente mit mindestens drei OH-Gruppen pro Molekül B) (Polyole) kommen in Frage Polyester, Polycaprolactone, Polyether, Poly(meth)acrylate, Polycarbonate und Polyurethane, sowie monomere Polyole, mit einer OH-Funktionalität > 3 und einer OH-Zahl von 5 bis 2000 mg KOH/Gramm und einer mittleren Molmasse von 92 bis 30000 g/Mol. Bevorzugt werden Polyole mit einer OH-Zahl von 30 bis 200 mg KOH/Gramm und einer mittleren Molmasse von 840 bis 5600 g/Mol eingesetzt. Bevorzugte Polyole sind vor allem Polyester und/oder Polyether. Suitable resin components having at least three OH groups per molecule B) (polyols) are polyesters, polycaprolactones, polyethers, poly (meth) acrylates, polycarbonates and polyurethanes, and also monomeric polyols having an OH functionality> 3 and an OH number from 5 to 2000 mg KOH / gram and an average molecular weight of 92 to 30,000 g / mol. Preference is given to using polyols having an OH number of 30 to 200 mg KOH / gram and an average molecular weight of 840 to 5600 g / mol. Particularly preferred polyols are polyesters and / or polyethers.
Selbstverständlich können auch Mischungen solcher Harzkomponenten B) eingesetzt werden. Of course, mixtures of such resin components B) can be used.
Die Menge an der OH-Gruppen aufweisenden Harzkomponente B) wird so gewählt, dass auf jede OH-Gruppe der Komponente B) 0,2 bis 1 ,1 NCO- Äquivalente der Komponente A) entfällt. The amount of resin component B) containing OH groups is selected so that 0.2 to 1.1 NCO equivalents of component A) are eliminated for each OH group of component B).
Gegenstand der Erfindung ist auch ein Verfahren zur Herstellung von The invention also provides a process for the preparation of
Urethan(meth)acrylaten, erhältlich durch Umsetzung von Urethane (meth) acrylates, obtainable by reaction of
A) Monomer armen 1 : 1 Monoaddukten aus a1 ) Diisocyanaten A) Monomer poor 1: 1 monoadducts from a1) diisocyanates
und  and
a2) Verbindungen, die sowohl eine Alkoholgruppe als auch eine aktivierte  a2) Compounds that have both an alcohol group and one activated
Doppelbindung enthalten, mit einem Gehalt an freiem Diisocyanat von unter 5 Gew.-%,  Containing double bond, containing less than 5% by weight of free diisocyanate,
mit  With
B) mindestens einer Harzkomponente mit mindestens drei OH-Gruppen pro Molekül; wobei auf jede OH-Gruppe der Komponente B) 0,2 bis 1 ,1 NCO- Äquivalente der Komponente A) entfällt. B) at least one resin component having at least three OH groups per molecule; wherein each OH group of component B) 0.2 to 1, 1 NCO equivalents of Component A) is omitted.
Die Umsetzung der Komponente A) mit der Komponente B) beinhaltet die Reaktion der freien NCO-Gruppen mit Hydroxylgruppen und wurde schon häufig beschrieben The reaction of component A) with component B) involves the reaction of the free NCO groups with hydroxyl groups and has been described frequently
(EP 0 669 353, EP 0 669 354, DE 30 30 572, EP 0 639 598 oder EP 0 803 524). Diese(EP 0 669 353, EP 0 669 354, DE 30 30 572, EP 0 639 598 or EP 0 803 524). These
Reaktion kann entweder mit Lösemittel, aber auch vorzugsweise ohne Lösemittel stattfinden. Sie wird in der Regel in einem Temperaturbereich zwischen 40 und 80 °C durchgeführt und lässt sich vorteilhaft durch gängige in der Urethanchemie bekannte Katalysatoren, wie z. B. metallorganische Verbindungen, wie z. B. Dibutylzinndilaurat (DBTL), Reaction can take place either with solvent, but also preferably without solvent. It is usually carried out in a temperature range between 40 and 80 ° C and can be advantageously by conventional catalysts known in urethane, such. B. organometallic compounds, such as. Dibutyltin dilaurate (DBTL),
Dibutylzinndineodecanoat, Zinkoctoat, oder Bismuthneodecanoat; aber auch tertiäre Amine, z. B. Triethylamin oder Diazabicyclooctan usw., katalysieren. Als Reaktionsaggregate eignen sich alle üblichen Apparaturen, Kessel, Statik-Mischer, Extruder usw., vorzugsweise Dibutyltin dineodecanoate, zinc octoate, or bismuth neodecanoate; but also tertiary amines, eg. As triethylamine or diazabicyclooctane, etc., catalyze. Suitable reaction units are all customary apparatus, boilers, static mixers, extruders, etc., preferably
Aggregate, die über eine Misch- oder Rührfunktion verfügen. Die Viskosität in Substanz wird bei geeigneter Temperatur zwischen RT und 100 °C gemäß der DIN EN ISO 3219 gemessen. Die Viskosität in Lösung wird in einem geeigneten Aggregates that have a mixing or stirring function. The viscosity in substance is measured at a suitable temperature between RT and 100 ° C according to DIN EN ISO 3219. The viscosity in solution is in a suitable
Lösemittel, z. B. in einem Reaktivverdünner, bei 23 °C gemäß der DIN EN ISO 3219 gemessen. Als Reaktivverdünner kommen alle gängigen flüssigen Komponenten in Frage, die mindestens eine polymerisationsfähige Gruppe tragen, z. B. Acrylate, Methacrylate, Vinylether usw. Beispiele für solche Reaktivverdünner sind Hexandioldiacrylat, Solvents, e.g. B. in a reactive diluent, measured at 23 ° C according to DIN EN ISO 3219. Suitable reactive diluents are all common liquid components which carry at least one polymerizable group, for. Acrylates, methacrylates, vinyl ethers, etc. Examples of such reactive diluents are hexanediol diacrylate,
Isobornylacrylat, Hydroxypropylmethacrylat, Dipropylenglycoldiacrylat, Tripropylen- glycoldiacrylat, Trimethylolpropanformalmonoacrylat, Trimethylenpropantriacrylat,  Isobornyl acrylate, hydroxypropyl methacrylate, dipropylene glycol diacrylate, tripropylene glycol diacrylate, trimethylolpropane formal monoacrylate, trimethylene propane triacrylate,
Tetrahydrofufurylacrylat, Phenoxyethylacrylat, Laurylacrylat, Pentaerythrittetraacrylat, aber auch urethanisierte Reaktivverdünner wie Ebecryl 1039 (Cytec) und andere. Hersteller solcher Produkte sind z. B. Cytec, Sartomer, BASF, Rahn, Akzo und andere. Geeignete Konzentration der erfindungsgemäßen Urethan(meth)acrylate in Reaktivverdünnern liegen zwischen 5 und 95 Gew.-% insbesondere 10 bis 50 Gew.-%. Tetrahydrofurfuryl acrylate, phenoxyethyl acrylate, lauryl acrylate, pentaerythritol tetraacrylate, but also urethanized reactive diluents such as Ebecryl 1039 (Cytec) and others. Manufacturers of such products are z. Cytec, Sartomer, BASF, Rahn, Akzo and others. Suitable concentration of the urethane (meth) acrylates according to the invention in reactive diluents are between 5 and 95% by weight, in particular 10 to 50% by weight.
Gegenstand der Erfindung ist auch die Verwendung der beschriebenen Urethanacrylate in strahlenhärtenden Formulierungen aller Art. The invention also provides the use of the urethane acrylates described in radiation-curing formulations of all kinds.
Die folgenden Beispiele sollen die Erfindung und die Ausführbarkeit näher erläutern. Beispiele The following examples are intended to explain the invention and the feasibility in more detail. Examples
A) Herstellung von Monomer armen IPDI-HEA 1 :1 Monoaddukten A) nach EP2 367 864 Eine intensiv gerührte Mischung aus 555 g (2,5 Mol) IPDI, 0,05 g DBTL, 2,2 g DBHBA und 4,4 g BHT wird tropfenweise mit 1 16 g (1 Mol) Hydroxyethylacrylat versetzt, wobei trockene Luft über die Lösung geleitet wird. Nach Beendigung der Zugabe wird bei 80 °C so lange weitergerührt, bis ein vollständiger Umsatz der Alkoholkomponente Hydroxyethylacrylat erfolgt ist (ca. 2,5 h). Auch während dieser Reaktionszeit wird trockene Luft übergeleitet. Im Anschluss wird der Ansatz mit trockener Luft gesättigt und das nicht umgesetzte Diisocyanat mittels Kurzwegdestillation (KDL 4, UIC GmbH, Alzenau-Hörstein) mit 200 g/h bei 150 °C und 2 mbar abgetrennt, wobei ein steter Zustrom an trockener Luft im Gegenstrom durch die Apparatur geleitet wird. Das Produkt hat einen NCO-Gehalt von 12,0 Gew.-% und einen Monomergehalt von 0,3 Gew.-%. A) Preparation of low-monomer IPDI-HEA 1: 1 monoadducts A) according to EP2 367 864 A vigorously stirred mixture of 555 g (2.5 mol) of IPDI, 0.05 g DBTL, 2.2 g DBHBA and 4.4 g BHT is added dropwise with 1 16 g (1 mol) of hydroxyethyl acrylate, with dry air is passed through the solution. After completion of the addition, stirring is continued at 80 ° C. until a complete conversion of the alcohol component hydroxyethyl acrylate has taken place (about 2.5 h). Also during this reaction time dry air is transferred. The mixture is then saturated with dry air and the unreacted diisocyanate by short path distillation (KDL 4, UIC GmbH, Alzenau -Hoerstein) with 200 g / h at 150 ° C and 2 mbar separated, with a steady influx of dry air in countercurrent passed through the apparatus. The product has an NCO content of 12.0 wt .-% and a monomer content of 0.3 wt .-%.
B1 ) Herstellung von erfindungsgemäßen Urethanacrylaten auf Basis von tetrafunktionellen Alkoholen B1) Preparation of urethane acrylates based on tetrafunctional alcohols according to the invention
53,8 g Monomer armes IPDI-HEA aus Versuch 1 wird mit 0,2 g BHT und 0,2 g DBTL vorgelegt und auf 50 °C erwärmt. 38,4 g CAPA 4101 werden innerhalb von 1 h bei max. 80 °C zugetropft. Nach weiteren 2 h bei 80 °C liegt der NCO Gehalt bei <0,1 Gew.-% Die Viskosität bei 80 °C liegt bei 17,9 Pas. Die Viskosität 30-%ig in HDDA liegt bei 0,09 Pas. B2) Vergleichsbeispiel zu B1 , kein 1 : 1 Monoaddukt, nicht erfindungsgemäß 53.8 g monomer poor IPDI-HEA from experiment 1 is charged with 0.2 g BHT and 0.2 g DBTL and heated to 50 ° C. 38.4 g CAPA 4101 are heated within 1 h at max. 80 ° C added dropwise. After a further 2 h at 80 ° C, the NCO content is <0.1 wt .-% The viscosity at 80 ° C is 17.9 Pas. The viscosity 30% in HDDA is 0.09 Pas. B2) Comparative example to B1, no 1: 1 monoadduct, not according to the invention
35,0 g IPDI wird mit 0,2 g BHT und 0,2 g DBTL vorgelegt und auf 50 °C erwärmt. 38,3 g CAPA 4101 und 18,4 g HEA werden innerhalb von 1 h bei max. 80 °C zugetropft. Nach weiteren 2 h bei 80°C liegt der NCO Gehalt bei <0,1 Gew.-%. Die Viskosität bei 80 °C liegt bei 47,5 Pas. Die Viskosität 30-%ig in HDDA liegt bei 0,20 Pas. 35.0 g IPDI is charged with 0.2 g BHT and 0.2 g DBTL and heated to 50 ° C. 38.3 g CAPA 4101 and 18.4 g HEA are heated within 1 h at max. 80 ° C added dropwise. After a further 2 h at 80 ° C, the NCO content is <0.1 wt .-%. The viscosity at 80 ° C is 47.5 Pas. The viscosity 30% in HDDA is 0.20 Pas.
C1 ) Herstellung von erfindungsgemäßen Urethanacrylaten auf Basis von trifunktionellen Alkoholen C1) Preparation of Urethane Acrylates Based on Trifunctional Alcohols According to the Invention
3,7 g Trimethylolpropan (Aldrich) wird in 35 ml Aceton mit 0,1 g BHT und 0,1 g DBTL vorgelegt und auf 50 °C erwärmt. 29,1 g Monomer armes IPDI-HEA aus Versuch 1 werden innerhalb von 1 h unter Rückfluss zugetropft. Nach weiteren 8 h Rückfluss liegt der NCO Gehalt bei <0,1 Gew.-% 3.7 g of trimethylolpropane (Aldrich) are initially charged in 35 ml of acetone with 0.1 g of BHT and 0.1 g of DBTL and heated to 50.degree. 29.1 g of monomer poor IPDI-HEA from experiment 1 are added dropwise within 1 h under reflux. After a further 8 h reflux, the NCO content is <0.1% by weight.
Das Lösemittel wird im Vakuum vollständig abgezogen. Die Viskosität bei 100 °C liegt bei 57 Pas. Die Viskosität 30-%ig in HDDA liegt bei 0,07 Pas. The solvent is completely removed in vacuo. The viscosity at 100 ° C is 57 Pas. The viscosity 30% in HDDA is 0.07 Pas.
C2) Vergleichsbeispiel zu C1 , kein 1 : 1 Monoaddukt, nicht erfindungsgemäß 3,7 g Trimethylolpropan (Aldrich) wird in 35 ml Aceton mit 0,1 g BHT und 0,1 g DBTL vorgelegt und auf 50 °C erwärmt. 19,1 g IPDI werden innerhalb von 1 h unter Rückfluß zugetropft. Dann werden 10,0 g HEA bei der gleichen Temperatur zugetropft. Nach weiteren 8 h Rückfluß liegt der NCO Gehalt bei <0,1 Gew.-%. Das Lösemittel wird im Vakuum vollständig abgezogen. Die Viskosität bei 100 °C liegt bei 317 Pas. Die Viskosität 30-%ig in HDDA liegt bei 0,16 Pas. C2) Comparative example to C1, no 1: 1 monoadduct, not according to the invention 3.7 g of trimethylolpropane (Aldrich) are initially charged in 35 ml of acetone with 0.1 g of BHT and 0.1 g of DBTL and heated to 50.degree. 19.1 g of IPDI are added dropwise within 1 h under reflux. Then 10.0 g of HEA are added dropwise at the same temperature. After a further 8 h reflux, the NCO content is <0.1 wt .-%. The solvent is completely removed in vacuo. The viscosity at 100 ° C is 317 Pas. The viscosity 30% in HDDA is 0.16 Pas.
D) Vergleichsbeispiele von Urethanacrylaten auf Basis difunktioneller Alkohole, nicht erfindungsgemäß D) Comparative examples of urethane acrylates based on difunctional alcohols, not according to the invention
Nachdem gezeigt wurde, dass die Viskosität der Urethanacrylate auf Basis der  After it has been shown that the viscosity of the urethane acrylates based on
trifunktionellen Polyole deutlich niedriger ist, wenn man monomerarmes IPDI-HEA einsetzt, wird nun gezeigt, dass die Viskosität bei difunktionellen Polyolen in etwa gleich ist. trifunctional polyols is significantly lower when low-monomer IPDI-HEA is used, it is now shown that the viscosity of difunctional polyols is about the same.
D1 ) Vergeich Produkt aus monomer armen IPDI-HEA und Oxyester T1 136 D1) Compound product of monomer poor IPDI-HEA and oxyester T1 136
48,5 g Monomer armes IPDI-HEA aus Versuch 1 wird mit 0,2 g BHT und 0,2 g DBTL vorgelegt und auf 50 °C erwärmt. 71 ,4 g Oxyester T1 136 werden innerhalb von 1 h bei max. 80°C zugetropft. Nach weiteren 2 h bei 80 °C liegt der NCO-Gehalt bei <0,1 %. Die Viskosität bei 80 °C liegt bei 3,3 Pas. Die Viskosität 30-%ig in HDDA liegt bei 0,08 Pas. 48.5 g of monomer poor IPDI-HEA from experiment 1 is charged with 0.2 g of BHT and 0.2 g of DBTL and heated to 50 ° C. 71, 4 g of Oxyester T1 136 are within 1 h at max. 80 ° C added dropwise. After a further 2 h at 80 ° C, the NCO content is <0.1%. The viscosity at 80 ° C is 3.3 Pas. The viscosity 30% in HDDA is 0.08 Pas.
D2) Vergleich Produkt aus IPDI HEA Mischung und Oxyester T1 136 D2) Comparison product of IPDI HEA blend and Oxyester T1 136
32,8 g IPDI wird mit 0,2 g BHT und 0,2 g DBTL vorgelegt und auf 50 °C erwärmt. 74,6 g Oxyester T1 136 und 17,2 g HEA werden innerhalb von 1 h bei max. 80°C zugetropft. Nach weiteren 2 h bei 80 °C liegt der NCO Gehalt bei <0,1 %. Die Viskosität bei 80 °C liegt bei 3,3 Pas. Die Viskosität 30-%ig in HDDA liegt bei 0,08 Pas. 32.8 g IPDI is charged with 0.2 g BHT and 0.2 g DBTL and heated to 50 ° C. 74.6 g of Oxyester T1 136 and 17.2 g of HEA are within 1 h at max. 80 ° C added dropwise. After a further 2 h at 80 ° C, the NCO content is <0.1%. The viscosity at 80 ° C is 3.3 Pas. The viscosity 30% in HDDA is 0.08 Pas.
Wie experimentell belegt, führt Monomer armes IPDI-HEA Addukt in Urethanacrylaten immer dann zu deutlich niedrigeren Viskositäten als die herkömmliche Mischung aus IPDI und HEA, wenn die OH-Funktionalität der Harzkomponente mindestens 3 beträgt. As proven experimentally, monomer poor IPDI-HEA adduct in urethane acrylates always leads to significantly lower viscosities than the conventional mixture of IPDI and HEA, when the OH functionality of the resin component is at least 3.

Claims

Patentansprüche Patent claims
1 . Urethan(meth)acrylate, aus dem Reaktionprodukt von 1 . Urethane (meth)acrylates, from the reaction product of
A) Monomer armen 1 :1 Monoaddukten aus A) Monomer-poor 1:1 monoadducts
a1 ) Diisocyanaten a1) Diisocyanates
und and
a2) Verbindungen, die sowohl eine Alkoholgruppe als auch eine aktivierte a2) Compounds that have both an alcohol group and an activated one
Doppelbindung enthalten, contain double bond,
mit einem Gehalt an freiem Diisocyanat von unter 5 Gew.-%, with a free diisocyanate content of less than 5% by weight,
mit with
B) mindestens einer Harzkomponente mit mindestens drei OH-Gruppen pro Molekül; wobei auf jede OH-Gruppe der Komponente B) 0,2 bis 1 ,1 NCO- Äquivalente der Komponente A) entfällt. B) at least one resin component with at least three OH groups per molecule; whereby each OH group of component B) accounts for 0.2 to 1.1 NCO equivalents of component A).
2. Urethan(meth)acrylate nach Anspruch 1 , dadurch gekennzeichnet, dass Diisocyanate a) ausgewählt aus 1 ,2-Ethylendiisocyanat, 1 ,4-Tetramethylendiisocyanat, 1 ,6- Hexamethylendiisocyanat (HDI), 2,2,4-Trimethyl-1 ,6-hexamethylendiisocyanat (TMDI), 2,4,4-Trimethyl-1 ,6-hexamethylendiisocyanat (TMDI)1 ,9-Diisocyanato-5-methylnonan,2. Urethane (meth)acrylates according to claim 1, characterized in that diisocyanates a) selected from 1,2-ethylene diisocyanate, 1,4-tetramethylene diisocyanate, 1,6-hexamethylene diisocyanate (HDI), 2,2,4-trimethyl-1 ,6-hexamethylene diisocyanate (TMDI), 2,4,4-trimethyl-1,6-hexamethylene diisocyanate (TMDI)1,9-diisocyanato-5-methylnonane,
1 ,8-Diisocyanato-2,4-dimethyloctan, 1 ,12-Dodecandiisocyanat, ω,ω'- Diisocyanatodipropylether, Cyclobuten-1 ,3-diisocyanat, Cyclohexan-1 ,3-diisocyanat, Cyclohexan-1 ,4-diisocyanat, 3-lsocyanatomethyl-3,5,5-trimethyl-cyclohexylisocyanat (Isophorondiisocyanat, IPDI), 1 ,4-Diisocyanatomethyl-2,1,8-Diisocyanato-2,4-dimethyloctane, 1,12-dodecane diisocyanate, ω,ω'-diisocyanatodipropyl ether, cyclobutene-1,3-diisocyanate, cyclohexane-1,3-diisocyanate, cyclohexane-1,4-diisocyanate, 3 -isocyanatomethyl-3,5,5-trimethylcyclohexyl isocyanate (isophorone diisocyanate, IPDI), 1,4-diisocyanatomethyl-2,
3,5,6-tetramethyl-cyclohexan, Decahydro-8-methyl-(1 ,4-methanol-naphthalin-2,5-ylendimethylendiisocyanat, , 3,5,6-tetramethylcyclohexane, decahydro-8-methyl-(1,4-methanol-naphthalene-2,5-ylenedimethylene diisocyanate, ,
Decahydro-8-methyl-(1 ,4-methanol-naphthalin-3,5-ylendimethylendiisocyanat, Decahydro-8-methyl-(1,4-methanol-naphthalene-3,5-ylenedimethylene diisocyanate,
Hexahydro-4,7-methano-indan-1 ,5- ylendimethylendiisocyanat, Hexahydro-4,7-methano- indan-2,5- ylendimethylendiisocyanat, Hexahydro-4,7-methano-indan-1 ,6- ylendimethylendiisocyanat, Hexahydro-4,7-methano-indan-2,5- ylendimethylendiisocyanat, Hexahydro-4,7-methanoindan-1 ,5-ylendiisocyanat, Hexahydro-4,7-methano-indan-1,5-ylenedimethylene diisocyanate, Hexahydro-4,7-methano-indan-2,5-ylenedimethylene diisocyanate, Hexahydro-4,7-methano-indan-1,6-ylenedimethylene diisocyanate, Hexahydro- 4,7-methano-indan-2,5-ylenedimethylene diisocyanate, hexahydro-4,7-methanoindan-1,5-ylene diisocyanate,
Hexahydro-4,7-methanoindan-2,5-ylendiisocyanat, Hexahydro-4,7-methanoindan-1 ,6- ylendiisocyanat, Hexahydro-4,7-methanoindan-2,6-ylendiisocyanat, Hexahydro-4,7-methanoindan-2,5-ylene diisocyanate, Hexahydro-4,7-methanoindan-1,6-ylene diisocyanate, Hexahydro-4,7-methanoindan-2,6-ylene diisocyanate,
2,4-Hexahydrotoluylendiisocyanat, 2,6-Hexahydrotoluylendiisocyanat, 2,4-hexahydrotoluene diisocyanate, 2,6-hexahydrotoluene diisocyanate,
4,4'-Methylendicyclohexyldiisocyanat (4,4'-H12MDI), 2,2'-Methylendicyclohexyl- diisocyanat (2,2'-H12MDI), 2,4-Methylendicyclohexyldiisocyanat (2,4-H12MDI) oder auch Mischungen dieser Isomeren, 4,4'-Diisocyanato-3,3',5,5'-tetramethyldicyclohexylmethan, 4,4'-Diisocyanato-2,2',3,3',5,5',6,6'-octamethyldicyclohexylmethan, ω,ω'-Diisocyanato- 1 ,4-diethylbenzol, 1 ,4-Diisocyanatomethyl-2,3,5,6-tetramethylbenzol, 2-Methyl-1 ,5- diisocyanatopentan (MPDI), 2-Ethyl-1 ,4-diisocyanatobutan, 1 ,10-Diisocyanatodecan, 1 ,5-Diisocyanatohexan, 1 ,3-Diisocyanatomethylcyclohexan, 1 ,4- 4,4'-methylenedicyclohexyl diisocyanate (4,4'-H 12 MDI), 2,2'-methylenedicyclohexyl diisocyanate (2,2'-H 12 MDI), 2,4-methylenedicyclohexyl diisocyanate (2,4-H 12 MDI) or Mixtures of these isomers, 4,4'-diisocyanato-3,3',5,5'-tetramethyldicyclohexylmethane, 4,4'-diisocyanato-2,2',3,3',5,5',6,6'- octamethyldicyclohexylmethane, ω,ω'-diisocyanato-1,4-diethylbenzene, 1,4-diisocyanatomethyl-2,3,5,6-tetramethylbenzene, 2-methyl-1,5-diisocyanatopentane (MPDI), 2-ethyl-1, 4-diisocyanatobutane, 1,10-diisocyanatodecane, 1,5-diisocyanatohexane, 1,3-diisocyanatomethylcyclohexane, 1,4-
Diisocyanatomethylcyclohexan, 2,5-Bis(isocyanatomethyl)bicyclo[2.2.1 ]heptan (NBDI), (2,6)-Bis(isocyanatomethyl)bicyclo[2.2.1 ]heptan (NBDI), sowie beliebige Gemische dieser Verbindungen, eingesetzt werden. Diisocyanatomethylcyclohexane, 2,5-bis(isocyanatomethyl)bicyclo[2.2.1]heptane (NBDI), (2,6)-bis(isocyanatomethyl)bicyclo[2.2.1]heptane (NBDI), and any mixtures of these compounds can be used .
Urethan(meth)acrylate nach Anspruch 1 oder 2, dadurch gekenzeichnet, dass Urethane (meth)acrylates according to claim 1 or 2, characterized in that
Diisocyanate a) ausgewählt aus IPDI, HDI, TMDI, und H12MDI als reine H12MDI-I oder deren Isomerengemische, sowie beliebige Gemische dieser Diisocyanate eingesetzt werden. Diisocyanates a) selected from IPDI, HDI, TMDI, and H 12 MDI can be used as pure H 12 MDI-I or their isomer mixtures, as well as any mixtures of these diisocyanates.
Urethan(meth)acrylate nach mindestens einem der vorherigen Ansprüche, dadurch gekennzeichnet, dass Verbindungen a2) ausgewählt aus olefinische Verbindungen, die sowohl mindestens eine Methacrylat- oder Acrylatfunktion oder Vinylethergruppe tragen, als auch genau eine Hydroxylgruppe aufweisen, eingesetzt werden. Urethane (meth)acrylates according to at least one of the preceding claims, characterized in that compounds a2) selected from olefinic compounds which carry at least one methacrylate or acrylate function or vinyl ether group and also have exactly one hydroxyl group are used.
5. Urethan(meth)acrylate nach mindestens einem der vorherigen Ansprüche, dadurch 5. Urethane (meth)acrylates according to at least one of the preceding claims, characterized
gekennzeichnet, dass Verbindungen a2) ausgewählt aus Hydroxyethylacrylat, characterized in that compounds a2) selected from hydroxyethyl acrylate,
Hydroxypropylacrylat, Hydroxybutylacrylat und Hydroxyethylmethacrylat, Hydroxypropyl acrylate, hydroxybutyl acrylate and hydroxyethyl methacrylate,
Hydroxypropyl methacrylat, Hydroxybutylmethacrylat, Glycerindiacrylat, Hydroxypropyl methacrylate, hydroxybutyl methacrylate, glycerine diacrylate,
Pentaerythroltriacrylat, Trimethylolpropandiacrylat, Glycerindimethacrylat, Pentaerythrol triacrylate, trimethylolpropane diacrylate, glycerine dimethacrylate,
Pentaerythroltrimethacrylat und Trimethylolpropandimethacrylat, Hydroxyethylvinylether, Pentaerythrol trimethacrylate and trimethylolpropane dimethacrylate, hydroxyethyl vinyl ether,
Hydroxypropylvinylether, Hydroxybutylvinylether Hydroxypentylvinylether Hydroxypropyl vinyl ether, hydroxybutyl vinyl ether, hydroxypentyl vinyl ether
Hydroxyhexylvinylether, sowie beliebige Gemische dieser Verbindungen eingesetzt werden. Hydroxyhexyl vinyl ether, and any mixtures of these compounds can be used.
6. Urethan(meth)acrylate nach mindestens einem der vorherigen Ansprüche, dadurch 6. Urethane (meth)acrylates according to at least one of the preceding claims, characterized
gekennzeichnet, dass als Harzkomponente mit mindestens drei OH-Gruppen pro Molekül B) Polyester, Polycaprolactone, Polyether, Poly(meth)acrylate, Polycarbonate, Polyurethane, monomere Polyole, mit einer OH-Funktionalität > 3 und einer OH-Zahl von 5 bis 2000 mg KOH/Gramm und einer mittleren Molmasse von 92 bis 30000 g/Mol, allein oder in Mischungen, eingesetzt werden. characterized in that as a resin component with at least three OH groups per molecule B) polyester, polycaprolactones, polyethers, poly (meth) acrylates, polycarbonates, polyurethanes, monomeric polyols, with an OH functionality > 3 and an OH number of 5 to 2000 mg KOH/gram and an average molecular weight of 92 to 30,000 g/mol, alone or in mixtures.
7. Urethan(meth)acrylate nach mindestens einem der vorherigen Ansprüche, dadurch gekennzeichnet, dass als Harzkomponente mit mindestens drei OH-Gruppen pro Molekül B) Polyole mit einer OH-Zahl von 30 bis 200 mg KOH/Gramm und einer mittleren Molmasse von 840 bis 5600 g/Mol eingesetzt werden. 7. Urethane (meth)acrylates according to at least one of the preceding claims, characterized in that the resin component with at least three OH groups per molecule B) is polyols with an OH number of 30 to 200 mg KOH/gram and an average molecular weight of 840 up to 5600 g/mol can be used.
8. Urethan(meth)acrylate nach mindestens einem der vorherigen Ansprüche, dadurch gekennzeichnet, dass als Harzkomponente mit mindestens drei OH-Gruppen pro Molekül B) Polyester und/oder Polyether eingesetzt werden. 8. Urethane (meth)acrylates according to at least one of the preceding claims, characterized in that polyester and/or polyether are used as the resin component with at least three OH groups per molecule B).
9. Verfahren zur Herstellung von Urethan(meth)acrylate nach mindestens einem der vorherigen Ansprüche, erhältlich durch Umsetzung von 9. A process for producing urethane (meth)acrylates according to at least one of the preceding claims, obtainable by implementing
A) Monomer armen 1 : 1 Monoaddukten aus A) Monomer-poor 1:1 monoadducts
a1 ) Diisocyanaten a1) Diisocyanates
und and
a2) Verbindungen, die sowohl eine Alkoholgruppe als auch eine aktivierte a2) Compounds that have both an alcohol group and an activated one
Doppelbindung enthalten, contain double bond,
mit einem Gehalt an freiem Diisocyanat von unter 5 Gew.-%, mit with a free diisocyanate content of less than 5% by weight, with
B) mindestens einer Harzkomponente mit mindestens drei OH-Gruppen pro Molekül; wobei auf jede OH-Gruppe der Komponente B) 0,2 bis 1 ,1 NCO- Äquivalente der Komponente A) entfällt. B) at least one resin component with at least three OH groups per molecule; whereby each OH group of component B) accounts for 0.2 to 1.1 NCO equivalents of component A).
10. Verfahren zur Herstellung von Urethan(meth)acrylate nach Anspruch 9, dadurch 10. A process for producing urethane (meth)acrylates according to claim 9, characterized in that
gekennzeichnet, dass Kalysatoren ausgewählt aus Dibutylzinndilaurat (DBTL), Dibutylzinndineodecanoat, Zinkoctoat, Bismuthneodecanoat, Triethylamin und/oder Diazabicyclooctan, eingesetzt werden. characterized in that catalysts selected from dibutyltin dilaurate (DBTL), dibutyltin dineodecanoate, zinc octoate, bismuth neodecanoate, triethylamine and / or diazabicyclooctane are used.
1 1 . Verwendung der Urethanacrylate nach mindestens einem der vorherigen Ansprüche in strahlenhärtenden Formulierungen. 1 1 . Use of the urethane acrylates according to at least one of the preceding claims in radiation-curing formulations.
EP14777320.4A 2013-10-08 2014-09-30 Polyfunctional urethane(meth)acrylates consisting of low-monomer diisocyanate monoadducts Withdrawn EP3055339A1 (en)

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