EP2912042A1 - Compositions à base d'isocyanates contenant des alcoxysilanes et des stabilisateurs acides - Google Patents

Compositions à base d'isocyanates contenant des alcoxysilanes et des stabilisateurs acides

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Publication number
EP2912042A1
EP2912042A1 EP13770445.8A EP13770445A EP2912042A1 EP 2912042 A1 EP2912042 A1 EP 2912042A1 EP 13770445 A EP13770445 A EP 13770445A EP 2912042 A1 EP2912042 A1 EP 2912042A1
Authority
EP
European Patent Office
Prior art keywords
halogen
lewis acid
formula
acid
bronstedt
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Withdrawn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
EP13770445.8A
Other languages
German (de)
English (en)
Inventor
Emmanouil Spyrou
Manfred Kreczinski
Holger Loesch
Andrea THESING
Lars Hellkuhl
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 EP2912042A1 publication Critical patent/EP2912042A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07F—ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
    • C07F7/00—Compounds containing elements of Groups 4 or 14 of the Periodic Table
    • C07F7/02—Silicon compounds
    • C07F7/08—Compounds having one or more C—Si linkages
    • C07F7/18—Compounds having one or more C—Si linkages as well as one or more C—O—Si linkages
    • C07F7/1804—Compounds having Si-O-C linkages
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07F—ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
    • C07F7/00—Compounds containing elements of Groups 4 or 14 of the Periodic Table
    • C07F7/02—Silicon compounds
    • C07F7/08—Compounds having one or more C—Si linkages
    • C07F7/18—Compounds having one or more C—Si linkages as well as one or more C—O—Si linkages
    • C07F7/1804—Compounds having Si-O-C linkages
    • C07F7/1872—Preparation; Treatments not provided for in C07F7/20
    • C07F7/1892—Preparation; Treatments not provided for in C07F7/20 by reactions not provided for in C07F7/1876 - C07F7/1888
    • 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
    • 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
    • C08G18/34—Carboxylic acids; Esters thereof with monohydroxyl compounds
    • 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
    • C08G18/38—Low-molecular-weight compounds having heteroatoms other than oxygen
    • C08G18/3819—Low-molecular-weight compounds having heteroatoms other than oxygen having nitrogen
    • 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
    • C08G18/38—Low-molecular-weight compounds having heteroatoms other than oxygen
    • C08G18/3855—Low-molecular-weight compounds having heteroatoms other than oxygen having sulfur
    • C08G18/3876—Low-molecular-weight compounds having heteroatoms other than oxygen having sulfur containing mercapto 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
    • C08G18/70—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the isocyanates or isothiocyanates used
    • C08G18/71—Monoisocyanates or monoisothiocyanates
    • C08G18/718—Monoisocyanates or monoisothiocyanates containing silicon

Definitions

  • compositions comprising alkoxysilane-containing isocyanates
  • the present invention relates to a composition
  • a composition comprising (A) an isocyanate of the formula (I) OCN-A-SiR 1 R 2 R 3 (I), wherein A is a straight-chain, branched, substituted and / or unsubstituted aliphatic hydrocarbon radical having 1 to 12 Carbon atoms or a substituted or unsubstituted cycloaliphatic hydrocarbon radical having from 4 to 18 carbon atoms, wherein R 1 is selected from the group consisting of -O-R A k wherein R 2 and R 3 are each and independently selected from the group of substituents which comprise -RAII ⁇ and -O-R A i k , wherein -RAII ⁇ represents a hydrocarbon radical having 1 to 6 carbon atoms, and B) a Bronstedt or Lewis acid or a Bronstedt or Lewis acid releasing at room temperature Connection; as well as one
  • a process for producing a stabilized alkoxysilane-containing isocyanate comprising the step of adding a Lewis or Bronsted acid or one at room temperature
  • Alkoxysilane-containing isocyanates are valuable chemical compounds which permit the targeted formation of polymers which find versatile industrial use as silane-containing polycarbamates or silane-containing polyureas in foams, elastomers, thermoplastics, fibers, light-resistant polycarbamate coatings or adhesives.
  • Synthetic access to isocyanates can be via a number of different routes.
  • Dialkyl carbonate used (EP 18 586, EP 355 443, US 4,268,683, EP 990 644).
  • urea route is the urea-mediated transfer of amines to isocyanates via a two-stage process.
  • an amine is reacted with alcohol in the presence of urea or urea equivalents (eg, alkyl carbonates, alkyl carbamates) to form a biscarbamate, which is usually a
  • the thermal cleavage of carbamates can be carried out in the gas or in the liquid phase, with or without solvent and with or without catalysts.
  • Isophorone diisocyanate by cleavage of the corresponding biscarbamates in the gas phase in the tubular reactor in the presence of metallic packing at 410 ° C described.
  • the preparation of carbamates in a one-pot reaction of amine, urea and alcohol with simultaneous removal of ammonia is known from EP 18 568.
  • the teaching of EP 18 568 has been developed further and is described in EP 126 299, EP 126 300, EP 355 443, EP 566 925 and EP 568 782. More recent processes for the preparation of isocyanates are known from EP1512681, EP1512682, EP1512680, EP1593669, EP1602643, EP1634868, EP 209191 1.
  • the reaction via the urea route leads to the formation of undesired by-products, for example in one-stage, two-stage and also alternatively multi-stage processes for the preparation of carbamates and in the subsequent thermal cleavage of the carbamates to isocyanates.
  • a further object of the invention is to provide a process for the phosgene-free preparation of stabilized compositions comprising alkoxysilane-containing isocyanates, in particular to minimize the loss of reactive NCO groups and / or the formation of interfering byproducts such as isocyanate oligomers.
  • composition comprising
  • Substituents are selected which include -R A i k and -O-R A i k , wherein R A i k represents a hydrocarbon radical having 1 to 6 carbon atoms, and
  • the problem is solved by a composition wherein B) is selected from the group comprising carboxylic acids, preferably dicarboxylic acids, mineral acids, preferably phosphoric acid, acid halides and alkyl or aryl halides.
  • the problem is solved by a composition wherein the Bronsted or Lewis acid or the room temperature Bronsted or Lewis acid releasing compound is a compound of the formula (II)
  • R 5 is selected from the group consisting of halogen
  • R 6 is selected from the group comprising hydrogen, halogen, -CH 2 -halogen and -CO-halogen and preferably R 5 is -CH 2 -CI or -CO -CI and R 6 is hydrogen.
  • the problem is solved by a composition wherein the proportion of the Bronstedt or Lewis acid or the room temperature Bronsted or Lewis acid releasing compound based on the mass of the isocyanate in the Composition 0.0001 to 1 weight percent, preferably 0.001 to 0.9 weight percent, most preferably 0.002 to 0.5 weight percent.
  • the problem is solved by a composition wherein the isocyanate has the formula OCN- (CH 2 ) n -Si (OR 7 ) 3 and n 1 to 12, preferably 2 to 4 and R 7 is either methyl or ethyl.
  • composition further comprising
  • the problem is solved by a composition wherein the stoichiometric ratio between the total of the NCO-reactive hydroxy, thiol, -NH-, CH-acide and / or amine groups of C) to the total of the NCO groups of A) 2: 1 to 1: 2, preferably 1, 8: 1 to 1: 1, 8, most preferably 1, 6: 1 to 1: 1, 6.
  • the problem underlying the invention is solved by a method for producing a polymer comprising the step of curing the
  • composition according to the first aspect or an embodiment thereof.
  • the problem is solved by a process for preparing a stabilized alkoxysilane-containing isocyanate comprising the step e) adding a Lewis or Bronsted acid or a Bronsted or Lewis acid-releasing compound at room temperature.
  • the problem is solved by a method, further comprising the steps a1) reacting an alkoxysilanealkylamine of the formula (III)
  • step a2) c) separating the alcohol of the formula R -OH after step b1) or a2) to form a reaction mixture separated from the alcohol, and d) thermal cracking of the reaction mixture separated off from the alcohol at temperatures of 180 to 280 ° C at a pressure of 0.1 to 200 mbar, wherein A is a straight-chain, branched, substituted and / or unsubstituted aliphatic hydrocarbon radical having 1 to 12
  • the problem is solved by a method wherein the Bronstedt or Lewis acid or the room temperature Bronstedt or Lewis acid releasing compound of Group is selected which comprises carboxylic acids, preferably dicarboxylic acids, mineral acids, acid halides and alkyl and aryl halides.
  • the problem is solved by a method wherein the Bronsted or Lewis acid or at room temperature
  • R 5 is selected from the group consisting of halogen
  • R 6 is selected from the group consisting of hydrogen, -CH 2 -halogen, halogen and
  • R 5 is -CH 2 -CI or -CO-CI and R 6
  • the problem is solved by a method wherein the proportion of the Bronstedt or Lewis acid or the Bronsted or Lewis acid releasing compound at room temperature based on the sum of the acid and the isocyanate 0.0001 to 1 weight percent, preferably 0.001 to 0.9 weight percent, most preferably 0.002 to 0.5 weight percent.
  • the problem is solved by a method wherein the isocyanate has the formula OCN- (CH 2 ) n -Si (OMe) 3 and n 1 to 12, preferably 2 to 4.
  • a seventh embodiment of the second aspect which is also an embodiment of the first to sixth embodiments, the problem is solved by a method wherein step b1) or step a) are carried out in a pressure distillation reactor with separation of generated ammonia.
  • the problem underlying the invention is solved by using a Bronstedt or Lewis acid or a Bronstedt or Lewis acid-releasing compound at room temperature to stabilize an isocyanate of the formula (I)
  • Substituents are selected which include R A i k and -O-R A i k k , wherein -RAII ⁇ is a hydrocarbon radical having 1 to 6 carbon atoms, and wherein the composition further comprises a Bronstedt or Lewis acid or a room temperature Bronsted or Lewis acid releasing compound.
  • the problem is solved by a use wherein the Bronsted or Lewis acid or the room temperature Bronsted or Lewis acid releasing compound is selected from the group consisting of carboxylic acids, preferably dicarboxylic acids, mineral acids, Acid halides and alkyl and aryl halides.
  • the problem is solved by use wherein the Bronsted or Lewis acid or the room temperature Bronsted or Lewis acid releasing compound is a compound of the formula (II)
  • R 5 is selected from the group comprising halogen, -CO-halogen and -CH 2 -halogen, and wherein R 6 is selected from the group consisting of
  • -CH 2 comprises -halogen, halogen and -CO-halogen is hydrogen and preferably R 5 is -CH 2 -Cl or -CO-CI and R 6 is hydrogen.
  • Room temperature Bronstedt or Lewis acid releasing compound based on the sum of the acid and the isocyanate 0.0001 to 1 weight percent, preferably 0.001 to 0.9 weight percent, most preferably 0.002 to 0.5 weight percent.
  • the problem is solved by use wherein the isocyanate has the formula OCN- (CH 2 ) n -Si (OR 7 ) 3 and n 1 to 12, preferably 2 to 4, and R 7 is either methyl or ethyl.
  • the inventors of the present invention have discovered that acidic stabilizers improve the storage stability of alkoxysilane-containing products prepared by a phosgene-free process
  • the inventors of the present invention have further found that the formation of undesirable by-products such as oligomers of the isocyanates in the presence of acid
  • Stabilizers is surprisingly reduced.
  • the invention relates to the stabilization of alkoxysilane-containing isocyanates by acid
  • Stabilizers which constitute component B) of the composition according to the invention.
  • a Bronsted or Lewis acid is used as component B) or substances which can release Bronstedt or Lewis acids at room temperature, for example carboxylic acids, mineral acids or halogen-containing substances such as acid halides or alkyl halides.
  • Suitable compounds are still Benzyl halides such as benzyl chloride or benzyl bromide, furthermore benzoyl halides such as benzoyl chloride or benzoyl bromide, phthaloyl chloride, isophthalic acid dichloride,
  • Terephthalic acid dichloride Terephthalic acid dichloride, toluic acid dichloride, oxalic acid, succinic acid or phosphoric acid.
  • Particularly preferred are benzyl chloride and benzoyl chloride.
  • the alkoxysilane-containing isocyanate is prepared according to the invention via a phosgene-free process.
  • an acidic stabilizer more specifically, a Lewis or Bronsted acid, or a compound releasing such an acid at room temperature
  • a Lewis or Bronsted acid or a compound releasing such an acid at room temperature
  • the stabilizer is added to a precursor of the alkoxysilane-containing isocyanate during production, unless the stabilizer is removed or deactivated by the following synthesis steps.
  • a single stabilizer may be used as well as a mixture comprising two or more stabilizers.
  • Starting compounds for the process are diamines of the abovementioned formula (II), alcohols of the abovementioned formula (III) and also urea and / or urea equivalents prepared from urea.
  • Suitable alkoxysilane-containing amines of the formula (II) are, for example
  • Suitable alcohols of the formula R -OH are any primary and secondary aliphatic or cycloaliphatic alcohols which have a boiling point below 190 ° C. under atmospheric pressure.
  • R 8 is a substituted or unsubstituted alkyl, cycloalkyl, aryl or aralkyl radical.
  • C1 -C6 alkanols such as methanol, ethanol, 1-propanol, 1-butanol, 2-butanol, 1-hexanol or cyclohexanol.
  • 1-butanol is used as the alcohol.
  • Component A) may also contain additional di- and polyisocyanates.
  • the di- and polyisocyanates used can consist of any desired aromatic, aliphatic, and / or cycloaliphatic di- and / or polyisocyanates.
  • compositions of the invention may be solid, viscous, liquid and also
  • compositions may also contain adjuvants and additives selected from inhibitors, organic solvents optionally containing unsaturated moieties, surfactants, oxygen and / or radical scavengers, catalysts,
  • Sunscreens color whiteners, photoinitiators, photosensitizers, thixotropic agents, skin preventatives, defoamers, dyes, pigments, fillers and
  • Matting agent included. The amount varies greatly from the field of application and type of auxiliary and additive.
  • Suitable organic solvents are all liquid substances which do not react with other ingredients, eg. Acetone, ethyl acetate, butyl acetate, xylene, Solvesso 100, Solvesso 150, methoxypropyl acetate and dibasic ester.
  • composition according to the invention may be the usual additives, such as leveling agents, for. As polysilicones or acrylates, light stabilizers, for. As sterically hindered amines, or other auxiliaries, such as. As described in EP 0 669 353, in a total amount of 0.05 to 5 wt .-% are added. Fillers and pigments such. Titanium dioxide may be added in an amount of up to 50% by weight of the total composition.
  • the preparation of the composition according to the invention is preferably carried out by
  • Room temperature and 220 ° C preferably between room temperature and 120 ° C and takes depending on the temperature and reaction components A) and B) between a few seconds and several hours.
  • composition of the invention may be a
  • Main component basic component or additive component of coating materials (eg textile, paper and leather coating), adhesives, paints, paints, powder coatings,
  • thermoplastic elastomers in particular thermoplastic polyurethanes, thermosetting elastomers, foams (eg.
  • Foams foams
  • integral foams eg soft integral and rigid integral foams
  • thermal insulation materials eg soft integral and rigid integral foams
  • RIM materials materials for medical and hygienic
  • composition of the invention may further comprise a main component
  • composition according to the invention can be a main component
  • Base component or additional component of coating compositions in particular primers, interlayers, topcoats, clearcoats, adhesives or sealing materials, particularly preferably with compounds of component C) represent.
  • the composition according to the invention may be a main component, base component or additional component of liquid and pulverulent
  • composition according to the invention can be a main component
  • Base component or additive component of adhesive compositions for bonding metal, plastic, glass, wood, textile, paper, MDF (Medium Density Fiber Boards) or leather substrates represent.
  • composition according to the invention can be a main component
  • Basic component or additive component of metal coating compositions in particular for automobile bodies, motorcycles and bicycles, building parts and components
  • the coating can either be used alone or be part of a layer of a multi-layer construction. It can be applied, for example, as a primer, as an intermediate layer or as a topcoat or clearcoat. The above or below the coating
  • the composition according to the invention further comprises C) a compound having at least one, preferably two to four, NCO-reactive hydroxyl, thiol, -NH, CH-acid and / or amine groups.
  • C) is an alcohol
  • curing of the composition comprising A), B) and C) results in a polyurethane compound.
  • Components A) and C) can be used in a mass ratio such that the OH: NCO ratio is between 2.0: 1, 0 and 1, 0: 2.0, preferably between 1, 8: 1, 0 and 1, 0: 1, 8 and more preferably between 1, 6: 1, 0 and 1, 0: 1, 6 is located.
  • polymers and prepolymers can be obtained, preferably with an NCO number of 0-30% by weight and an OH number of 500-0 mg KOH / g and an acid number of 0-50 mg KOH / g) as well as thermoset or thermoplastic elastomers.
  • compounds C in principle all compounds are suitable which have at least one, preferably at least two NCO groups reactive functional groups.
  • Suitable as functional groups z For example, OH, NH 2 , NH, SH, CH-acidic groups.
  • the compounds C) preferably contain 2 to 4 functional groups. Particularly preferred are alcohol groups and / or amino groups.
  • Suitable diamines and polyamines are: 1,2-ethylenediamine, 1,2-propylenediamine, 1,3-propylenediamine, 1,2-butylenediamine, 1,3-butylenediamine, 1,4-butylenediamine, 2- (ethylamino) ethylamine, 3- (methylamino) propylamine, 3- (cyclohexylamino) propylamine, 4,4'-diaminodicyclohexylmethane, isophoronediamine, 4,7-dioxadecane-1,10-diamine, N- (2-aminoethyl) -1,2-ethanediamine, N - (3-aminopropyl) -1, 3-propanediamine, N, N "-1, 2-ethanediylbis (1,3-propanediamine), adipic
  • Tetraethylenepentamine pentaethylenehexamine, dipropylenetriamine, hydrazine, 1, 3- and 1, 4-phenylenediamine, 4,4'-diphenylmethanediamine, amino-functional polyethylene oxides or
  • disecondary or primary / secondary diamines, as described, for. B. in a known manner from the corresponding diprimary diamines by reaction with a carbonyl compound, such as.
  • a carbonyl compound such as.
  • a ketone or aldehyde and subsequent hydrogenation or by addition of diprimary diamines to acrylic acid esters or maleic acid derivatives can be used.
  • suitable amino alcohols are monoethanolamine, 3-amino-1-propanol, isopropanolamine, aminoethoxyethanol, N- (2-aminoethyl) ethanolamine, N-ethyl-ethanolamine, N-butylethanolamine, Diethanolamine, 3- (hydroxyethylamino) -1-propanol and diisopropanolamine also called mixtures.
  • Examples of suitable compounds C) having SH groups are trimethylolpropane tri-3-mercaptopropionate, pentaerythritol tetra-3-mercaptopropionate, trimethylolpropane trimercaptoacetate and pentaerythritol tetramercaptoacetate.
  • CH-acidic compounds for example, derivatives of malonic acid esters, acetylacetone and / or acetoacetic ester are suitable.
  • Particularly suitable compounds C) are all in PU chemistry
  • diols and polyols z.
  • ethylene glycol 1, 2, 1, 3-propanediol, diethylene, dipropylene, triethylene, tetraethylene glycol, 1, 2, 1, 4-butanediol, 1, 3-Butylethylpropandiol, 1, 3-methylpropanediol, 1 , 5-pentanediol, bis (1,4-hydroxymethyl) cyclohexane (cyclohexanedimethanol), glycerol, hexanediol, neopentyl glycol, trimethylolethane, trimethylolpropane, pentaerythritol, bisphenol A, B, C, F, norbornylene glycol, 1,4-benzyldimethanol, ethanol , 2,4-dimethyl-2-ethylhexane-1,3-diol, 1,4-and 2,3-butylene glycol, di- ⁇ -hydroxyethyl
  • Suitable compounds C) are also diols and polyols which contain further functional groups contain. These are the linear or slightly branched hydroxyl-containing polyesters, polycarbonates, polycaprolactones, polyethers, polythioethers, polyesteramides, polyacrylates, polyvinyl alcohols, polyurethanes or polyacetals which are known per se. They preferably have a number-average molecular weight of from 134 to 20 000 g / mol, more preferably from 134 to 4000 g / mol. In the hydroxyl-containing polymers are preferably polyesters, polyethers, polyacrylates, polyurethanes, polyvinyl alcohols and / or
  • Polycarbonates having an OH number of 5 - used 500 in mg KOH / gram).
  • Dicarboxylic anhydrides corresponding dicarboxylic acid esters of lower alcohols, lactones or hydroxycarboxylic acids are prepared.
  • Suitable diols and polyols for the preparation of the preferred polyester polyols are, in addition to the abovementioned diols and polyols, 2-methylpropanediol, 2,2-dimethylpropanediol, diethylene glycol, dodecanediol 1, 12, 1, 4-cyclohexanedimethanol and 1, 2 and 1, 4 -Cyclohexandiol.
  • Dicarboxylic acids or derivatives suitable for preparing the polyester polyols may be aliphatic, cycloaliphatic, aromatic and / or heteroaromatic in nature and optionally substituted, e.g. B with halogen atoms, and / or unsaturated.
  • Preferred dicarboxylic acids or derivatives include succinic, adipic, corkic, azelaic and sebacic acids, 2,2,4 (2,4,4) -trimethyladipic acid, phthalic acid, phthalic anhydride, isophthalic acid, terephthalic acid, terephthalic acid dimethyl ester, tetrahydrophthalic acid, Maleic acid, maleic anhydride and dimer fatty acids.
  • Suitable polyester polyols are also those which are in a known manner by ring opening from lactones such as caprolactone and simple diols as starter molecules.
  • lactones such as caprolactone and simple diols as starter molecules.
  • mono- and polyesters from lactones eg. B. ⁇ -caprolactone or hydroxycarboxylic acids, eg. B. hydroxypivalic acid, ⁇ -hydroxydecanoic acid, ⁇ -hydroxycaproic acid, thioglycolic acid, can be used as starting materials for the preparation of polymers according to the invention.
  • Polyesters of the polycarboxylic acids or their derivatives and polyphenols mentioned in this application the hydroquinone, bisphenol-A, 4,4'-dihydroxybiphenyl or bis (4-hydroxyphenyl) sulfone; Polyester of carbonic acid, which consists of hydroquinone, diphenylolpropane, p-xylylene glycol, ethylene glycol, butanediol or hexanediol-1, 6 and other polyols by conventional condensation reactions, eg. B.
  • Polyphenols of the above type Polyester of boric acid; Polysiloxanes, such as.
  • the products obtained by hydrolysis of dialkyldichlorosilanes with water and subsequent treatment with polyalcohols, the products obtainable by addition of polysiloxane dihydrides to olefins, such as allyl alcohol or acrylic acid, are suitable as starting materials for the preparation of the compounds C).
  • the polyesters can be prepared in a conventional manner by condensation in one
  • Method of organic chemistry Houben-Weyl; Vol. 14/2, pages 1 to 5, 21 to 23, 40 to 44, Georg Thieme Verlag, Stuttgart, 1963, or by C.R. Martens, Alkyd Resins, pages 51 to 59, Reinhold Plastics Appl. Series, Reinhold Publishing Comp., New York, 1961.
  • OH-containing (meth) acrylates are also preferably used.
  • Poly (meth) acrylates Be prepared by the co-polymerization of (meth) acrylates, with individual components carry OH groups, others not. Thus, a randomly distributed OH-containing polymer is generated which carries no, one or many OH groups.
  • Such polymers are described under High solids hydroxyacrylics with tightly controlled molecular weight. van Leeuwen, Ben. SC Johnson Polymer, Neth.
  • the diols and dicarboxylic acids or derivatives thereof used to prepare the polyesterpolyols can be used in any desired mixtures. It is also possible to use mixtures of polyester polyols and diols.
  • Suitable compounds C) are also the reaction products of polycarboxylic acids and glycidic compounds, as z. B. in DE-OS 24 10 513 are described.
  • glycidyl compounds that can be used are esters of 2,3-epoxy-1-propanol with monobasic acids having from 4 to 18 carbon atoms, such as
  • Carbon atoms such as butylene oxide, and glycidyl ethers such as octyl glycidyl ether.
  • Compounds C) may also be those compounds which carry at least one further functional group in addition to an epoxide group, such as.
  • an epoxide group such as.
  • carboxyl, hydroxyl, mercapto or amino groups which is capable of reacting with an isocyanate group.
  • Particularly preferred are 2,3-epoxy-1-propanol and epoxidized soybean oil.
  • Example 1 Preparation of the alkoxysilane-containing isocyanates according to the urea route
  • IPMS isocyanatopropyltrimethoxysilane
  • AMMO aminopropyltrimethoxysilane
  • urea urea
  • Tin dichloride of 50 ppm was performed.
  • the fission gases IPMS and methanol were condensed out in two cascaded capacitors at 85 ° C and -25 ° C.
  • the recovered, about 93% crude IPMS was fed to a purifying distillation, with 330 g / h IPMS were obtained with a purity of> 98.5%, which corresponds to a yield of 92%.
  • 44 g / h of methanol were obtained as the top product of the cleavage and rectification.

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Health & Medical Sciences (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Polyurethanes Or Polyureas (AREA)

Abstract

La présente invention concerne une composition comprenant (A) un isocyanate de formule (I) OCN-A-SiR1R2R3 (I), et B) un acide de Bronstedt ou de Lewis ou un composé libérant un acide de Bronstedt ou de Lewis à la température ambiante. Dans un mode de réalisation particulier, le composant B) est décrit par la formule (II) : où R5 est halogène, ‑CO‑halogène ou ‑CH2‑halogène, R6 est hydrogène, ‑CH2‑halogène, halogène et ‑CO‑halogène. Les composants acides servent de stabilisateurs afin d'accroître la durée de conservation d'isocyanates alcoxylés obtenus par des procédés n'utilisant pas de phosgène. L'invention concerne en outre un procédé de production d'un isocyanate stabilisé contenant de l'alcoxysilane, comprenant l'ajout d'un acide de Bronstedt ou de Lewis ou d'un composé libérant un acide de Bronstedt ou de Lewis à la température ambiante à un isocyanate contenant de l'alcoxysilane.
EP13770445.8A 2012-10-23 2013-09-25 Compositions à base d'isocyanates contenant des alcoxysilanes et des stabilisateurs acides Withdrawn EP2912042A1 (fr)

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DE102012219324.3A DE102012219324A1 (de) 2012-10-23 2012-10-23 Zusammensetzungen umfassend alkoxysilanhaltige Isocyanateund saure Stabilisatoren
PCT/EP2013/069929 WO2014063895A1 (fr) 2012-10-23 2013-09-25 Compositions à base d'isocyanates contenant des alcoxysilanes et des stabilisateurs acides

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WO2016010900A1 (fr) * 2014-07-14 2016-01-21 Momentive Performance Materials Inc. Procédé de production d'isocyanato-organosilanes peu colorés et de couleur stable et produits dérivés de ces derniers
EP2979851A1 (fr) * 2014-07-28 2016-02-03 Evonik Degussa GmbH Fabrication efficace de demi-produits et composants composites dans le cadre du procédé de pressage à froid utilisant des (méth)acrylates hydroxyfonctionnalisés réticulés par duroplastie à l'aide d'isocyanates ou d'uretdions
EP3263616B8 (fr) 2016-06-27 2020-01-15 Evonik Operations GmbH Moyens de revêtement fonctionnalisés par un alkoxysilane et contenant un allophanate
CN109642009B (zh) 2016-08-09 2021-12-10 科思创德国股份有限公司 硅烷官能的聚合聚氨酯
KR101842254B1 (ko) * 2017-05-17 2018-03-27 에스케이씨 주식회사 안정성 및 반응성이 개선된 자이릴렌디이소시아네이트 조성물, 및 이를 이용한 광학 렌즈
EP3501642A1 (fr) 2017-12-22 2019-06-26 Covestro Deutschland AG Procédé de préparation de polymères à terminaison silane mélangés
KR101954346B1 (ko) 2017-12-27 2019-03-05 에스케이씨 주식회사 안정성 및 반응성이 개선된 이소시아네이트 조성물, 및 이를 이용한 광학 렌즈
EP3546465B1 (fr) * 2018-03-28 2020-09-09 Evonik Operations GmbH Procédé de production d'isocyanates contenant des groupes alcoxysilane
ES2820280T3 (es) * 2018-03-28 2021-04-20 Evonik Operations Gmbh Procedimiento para la producción de isocianatos que contienen grupos alcoxisilano
EP3546466B1 (fr) * 2018-03-28 2020-12-02 Evonik Operations GmbH Procédé de production d'isocyanates contenant des groupes alcoxysilane
CN110872238B (zh) * 2018-08-31 2022-07-12 万华化学集团股份有限公司 一种异氰酸酯稳定剂及其制备方法
WO2020089019A1 (fr) 2018-10-30 2020-05-07 Covestro Deutschland Ag Procédé de fabrication d'une structure de peinture multicouche à couche de recouvrement en prépolymères contenant des groupes silane
JP2022505990A (ja) 2018-10-30 2022-01-14 コベストロ・インテレクチュアル・プロパティ・ゲゼルシャフト・ミット・ベシュレンクテル・ハフツング・アンド・コー・カーゲー 層接着が改善された複層ペイント構造
EP3744748A1 (fr) 2019-05-27 2020-12-02 Covestro Deutschland AG Procédé de production d'un polymère à terminaison silane mélangé
CN112062786A (zh) * 2020-09-15 2020-12-11 江苏华盛锂电材料股份有限公司 异氰酸酯硅烷偶联剂的提纯方法及异氰酸酯硅烷偶联剂
EP4606829A1 (fr) 2024-02-23 2025-08-27 Covestro Deutschland AG Procédé de préparation de polyuréthanes et polyuréthane-urées à fonction alcoxysilane

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US9593135B2 (en) 2017-03-14
CN104718215A (zh) 2015-06-17
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JP2015533842A (ja) 2015-11-26
US20150274760A1 (en) 2015-10-01

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