GB2496708A - Solvent-borne scratch resistant coating compositions containing polymetallosiloxanes - Google Patents

Solvent-borne scratch resistant coating compositions containing polymetallosiloxanes Download PDF

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GB2496708A
GB2496708A GB1211240.5A GB201211240A GB2496708A GB 2496708 A GB2496708 A GB 2496708A GB 201211240 A GB201211240 A GB 201211240A GB 2496708 A GB2496708 A GB 2496708A
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silicone resin
metal
thermoplastic
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Nanguo Liu
Gerald Lawrence Witucki
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Dow Silicones Corp
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Dow Corning Corp
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    • C08GMACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G77/00Macromolecular compounds obtained by reactions forming a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon in the main chain of the macromolecule
    • C08G77/02Polysilicates
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    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
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    • C09D183/00Coating compositions based on macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon, with or without sulfur, nitrogen, oxygen, or carbon only; Coating compositions based on derivatives of such polymers
    • C09D183/14Coating compositions based on macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon, with or without sulfur, nitrogen, oxygen, or carbon only; Coating compositions based on derivatives of such polymers in which at least two but not all the silicon atoms are connected by linkages other than oxygen atoms
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    • C08G77/00Macromolecular compounds obtained by reactions forming a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon in the main chain of the macromolecule
    • C08G77/04Polysiloxanes
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    • C08G77/00Macromolecular compounds obtained by reactions forming a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon in the main chain of the macromolecule
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    • C08G77/00Macromolecular compounds obtained by reactions forming a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon in the main chain of the macromolecule
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    • C08JWORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J7/00Chemical treatment or coating of shaped articles made of macromolecular substances
    • C08J7/04Coating
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    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08JWORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J7/00Chemical treatment or coating of shaped articles made of macromolecular substances
    • C08J7/12Chemical modification
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    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L83/00Compositions of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon only; Compositions of derivatives of such polymers
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    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L83/00Compositions of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon only; Compositions of derivatives of such polymers
    • C08L83/04Polysiloxanes
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    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L83/00Compositions of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon only; Compositions of derivatives of such polymers
    • C08L83/04Polysiloxanes
    • C08L83/06Polysiloxanes containing silicon bound to oxygen-containing groups
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    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09DCOATING 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
    • C09D183/00Coating compositions based on macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon, with or without sulfur, nitrogen, oxygen, or carbon only; Coating compositions based on derivatives of such polymers
    • C09D183/02Polysilicates
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    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
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    • C09D183/00Coating compositions based on macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon, with or without sulfur, nitrogen, oxygen, or carbon only; Coating compositions based on derivatives of such polymers
    • C09D183/04Polysiloxanes
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    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09DCOATING 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
    • C09D183/00Coating compositions based on macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon, with or without sulfur, nitrogen, oxygen, or carbon only; Coating compositions based on derivatives of such polymers
    • C09D183/04Polysiloxanes
    • C09D183/06Polysiloxanes containing silicon bound to oxygen-containing groups
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    • C08GMACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G77/00Macromolecular compounds obtained by reactions forming a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon in the main chain of the macromolecule
    • C08G77/48Macromolecular compounds obtained by reactions forming a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon in the main chain of the macromolecule in which at least two but not all the silicon atoms are connected by linkages other than oxygen atoms
    • C08G77/56Boron-containing linkages
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    • C08G77/00Macromolecular compounds obtained by reactions forming a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon in the main chain of the macromolecule
    • C08G77/48Macromolecular compounds obtained by reactions forming a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon in the main chain of the macromolecule in which at least two but not all the silicon atoms are connected by linkages other than oxygen atoms
    • C08G77/58Metal-containing linkages

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Abstract

The invention provides a method for the preparation of a solvent-borne silicone resin containing polymetallosiloxane, wherein a metal containing material is hydrolysed and condensed with a silicon containing reactant in a solvent that the polymetallosiloxane and the silicon containing reactant at least are soluble in. The metal is chosen from Transition Group metals, IIIA Group element, Zr or Sn, and the metal containing material is preferably at least one boron containing material selected from boric acid or an of its salts, boron anhydride, boronic acid, alkoxyborate or a mixture thereof. The silicon containing reactant is preferably an alkoxysilane, hydroxysilan, alkoxysiloxane or hydroxysiloxane, and the solvent is an organic solvent. The solvent-borne silicone resin itself is claimed as well as its use in a thermoplastic or thermosetting organic polymer or rubbers or blends thereof in the enhancement of the scratch and/or abrasion resistance of the composition or coating.

Description

SOLVENT-BORNE SCRATCH RESISTANT COATING COMPOSITIONS CONTAINING
POLYBOROSILOXAN ES
[0001] The invention relates to siUcone resins comprising metallosUoxane which contains Si-S 0-Metal bonds or borosiloxane containing Si-0-B bonds and potentially Si-O-Si and/or B-O-B bonds. It also relates to the preparation of such silicone resins and to their use in thermoplastic or thermosetting organic polymer or rubber or thermoplastic/rubber blends compositions to enhance scratch and/or abrasion resistance of the organic polymer compositions. It further relates to coatings made of such sUicone resins for scratch resistance enhancement.
BACKGROUND
[0002] W02008/018981 discloses silicone polymers containing boron, aluminum and/or titanium, and having silicon-bonded branched alkoxy groups.
(0003] US2O1O!01 91001 discloses a process for performing hydrolysis and condensation of an epoxy-functional silane with boric acid, the condensate formed in the reaction being based on Si-O-B and/or Si-O-Si bonds.
[0004] US4152509 discloses borosiloxane polymers produced by heating at least one of boric acid compound with phenylsilane to effect polycondensation reaction.
(0005] EP141727361 discloses a coating composition formed from linear, reactive polysiloxanes and the reaction with two additional components including a reactant and a boron containing compound.
(0006] US 20100316876 describes a borosiloxane adhesive which is said to have high resistance to moisture, high transparency, and excellent adhesion to various substrates. The borosiloxane adhesive is derived from an alkenyl functional borosiloxane, a silicon-hydride compound and a hydrosilylation catalyst.
SUMMARY OF THE INVENTION
[0007] The invention provides a method for the preparation of a solvent-borne silicone resin containing polymetaUosloxane, wherein
S
a. A Metal containing material whose Metal M is chosen from Transition Group metals, lIlA Group elements, Zr and Sn b. A silicon containing reactant which is an alkoxysilane or hydroxysilane or alkoxysiloxane or hydroxysUoxane are hydrolysed and condensed in the presence of a solvent that dissolves the polymetallosiloxane and the silicon containing reactant to form rnetallosiloxane Si-O-M bonds.
[0008] Metals M as defined herein encompass transition metals (Sc, Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Zn and all elements from Group lIlA (i.e. B, Al, Ga. In and TI), Zr and Sn. This comprises boron, the first element of Group lIlA which is in fact a metalloid instead of a metal.
Nevertheless for the sake of convenience boron is considered to be a Metal M in the rest of the present specification. Preferably the Metal M is chosen from Period 4 of the transition metals.
Preferably the Metal M is chosen from nickel, copper and zinc. In other preferred embodiments, the Metal M is chosen from boron, titanium and aluminum.
[0009] Preferably, the silicone resin contains boron. While borosiloxane structures or other Metal containing structures are known, most rely on in-situ reaction of a siloxane with boron particulates. No prior art suggests a solvent-borne silicone resin specifically able to improve scratch resistance when applied as a coating.
[0010] The silicone resin preferably contains T units; D; M and/orG units. The resin is characterized by a majority of successive Si-O-M units where the Si is selected from R3SiO1 (M' units), R2SiO2, (D units), RSiO3, (T units) and SiO4 (0 units). The resin further contains polyorganosiloxanes, also known as silicones, generally comprising repeating siloxane units selected from R3SiO112 (M' units), R25i0212 (ID units), RSiO3 (1 units) and SO4Q (0 units), in which each R represents an organic group or hydrogen or a hydroxyl group. Branched silicone resins contain I and/or 0 units, optionally in combination with M' and/or D units, are preferred.
In the branched silicone resins of the invention, at least 25% of the siloxane units are preferably T and/orG units. More preferably, at least 75% of the siloxane units in the branched silicone resin are T andfor 0 units.
[0011] Preferably, the Metal containing material is at least one boron containing material selected from (F) boric acid of the formula B(OH)3, any of its salts or boric anhydride, (ii) boronic acid of the formula Ri B(OH)2, (iii) alkoxyborate of formulae B(0R2)3 or Ri B(0R2)2, a mixture containing at least two or more of (I), (ii) or (iii), where Ri and R2 are independently alkyl, alkenyl, aryl or arylakyl substituents. More preferably, the boron containing material is trimethoxyborane or triethoxyborane.
[0012) Preferably, the Metal containing material has general formula M(R3)m where m ri7 depending on the oxidation state of the considered Metal, selected from i alkoxymetals where R3=OR' and R' is an alkyl group, ii metal hydroxyl where R3=OH.
[0013] Preferably, the solvent is an organic solvent. A solvent as defined herein is a liquid substance that dissolves the polymetallosiloxane and the silicon containing reactant (alkoxysilane or hydroxysilane or alkoxysiloxane or hydroxysiloxane). The metal containing reactant might not be soluble in that solvent, such as B(OH)3. The solvent can be either pure substances like ether or ethanol or mixtures, such as the paraffinic solvents such as the various petroleum ethers and white spirits, or the range of pure or mixed aromatic solvents obtained from petroleum or tar fractions. The solvent can be for example methanol, ethanol, propanol, butanol. formic acid, acetic acid, formamide, acetone, tetrahydrofuran, methyl ethyl ketone, ethylacetate, acetonitrile, dimethylformamide, dimethylsulfoxide, hexane. benzene, diethyl ether.
methylene chloride, carbon tetrachloride, butylacetate, etc. [0014) In preferred embodiments, the solvent is ethanol. This is cheap, readily available and able to dissolve the polymetallosiloxane produced as well as the silicon containing reactant.
Preferably, propyl glycol methyl ether acetate (PGMEA) is added during the synthesis as a cosolvent.
[0015] The invention further provides a solvent-borne silicone resin comprising at east one polymetallosiloxane which contains Si-D-M bonds whose Metal M is chosen from Transition Group metals, lIlA Group elements and Sn, at least one solvent that can dissolve the polymetallosiloxane. Preferably, the molar ratio of Metal atom to Si atom ranges from 0.01 to 6, S preferably 0.1 to 2.
(0016] In a possible synthesis approach, alkoxysiloxane or hydroxysiloxane resins can be used as raw material, provided they can be dissolved in a solvent. Monoalkoxysilanes or hydroxysilanes when hydrolysed and condensed will form M' groups in the silicone resin and dialkoxysilanes when hydrolysed and condensed will form D groups in the silicone resin. A monoalkoxysilane or dialkoxysilane can be reacted with trialkoxysilanes and/or tetraalkoxysilanes to form a branched silicone resin.
[0017] The ailcoxysilane or hydroxysilane is preferably selected from i) tetra(alkoxysilane) Si(0R3)4, (ii) trialkoxysilane R6S1(0R3)3, (iii) dialkoxysilane R6RTSi(0R3)2 or (iv) monoalkoxysilane R6R7R8SiOR3, a mixture containing two or more of (i), (ii), (Ui) or (iv), where R3 is aOl to 010 alkyl group and R6, R7 and RB are independently alkyl, alkenyl, aryl, arylalkyl, bearing or not organic functionalities such as but not limited to glycidoxy, methacryloxy, acryloxy, and R is an alkyl group. Example of suitable hydroxysilane is diphenyl(dihydroxy)silane. A tetra(alkoxysilane) readily available and which can be used in the present invention is tetraethyl orthosilicate TEOS. In other preferred embodiments, trialkoxysilane like methyltriethoxysilane or methyltrimethoxysilane is used, which can be mixed or not with tetra(alkoxysilane) like TEOS.
[0018] Addition of water during the synthesis is possible but not required. Water loading is calculated minimum to consume partially the alkoxies and preferably the whole alkoxies present in the system. Preferably, the whole mixture is refluxed at a temperature preferably ranging from to 160°C in the presence or not of an organic solvent. Then the alcohol and organic solvent are stripped and possible remaining water are distilled off from the resin through, for example, azeotropic mixture water! alcohol. The obtained product can be further dried under vacuum at high temperature (ranging from 50 to 100°C) to remove remaining traces of solvents, alcohols or water. These resins can be used as additives in polymers or coatings formulations to improve scratch and/or abrasion resistance.
[0019] The invention keeps to a certain extent the transparency of the host matrix, i.e. the new resin allows to keep the transparency of the polymer it is blended with or the coating made up with the resin is transparent.
S
[0020] The silicone resins of the invention can be blended with a wide range of thermoplastic resins, for example polycarbonates, ABS (acrylonitrile butadiene styrene) resins, polycarbonatelABS blends, polyesters, polystyrene, or polyolefins such as polypropylene or polyethylene. The silicone resins of the invention can also be blended with thermosetting resins, for example epoxy resins of the type used in electronics applications, which are subsequently thermoset, or unsaturated polyester resin.
[0021] The thermoplastic polymer can be chosen from the carbonate family (e.g. Polycarbonate PC), polyamides (e.g. Polyamide 6 and 6.6), polyester (e.g. polyethyleneterephtalate). The thermoplastic polymer can be chosen from the polyoletin family (e.g. polypropylene PP or polyethylene PE).The thermoplastic resin can be a bio-sourced thermoplastic rnatrice such as polylactic acid (PLA) or polyhydroxybutadiene (PHB) or bio-sourced PP or PE. The polymer can be chosen from thermoplastic! rubbers blends from the family of natural rubber or Acrylonitrile / styrene 1 butadiene ABS. The polymer can be chosen from rubber made of a diene, preferably natural rubber. The polymer can be chosen from thermoset from the Novolac family (phenol-formol) or epoxy resin.
[0022] These above polymers can optionally be reinforced with, for example, glass fibres.
Applications include but are not limited to transportation vehicles, construction, electrical application, printed circuits boards and textiles. Unsaturated polyester resins, or epoxy are moulded for use in, for example, the nacelle of wind turbine devices. Normally, they are reinforced with glass (or carbon) fibre cloth.
[0023] The silicone resins of the invention frequently have further advantages including but not limited to transparency, higher impact strength, toughness, increased adhesion between two surfaces, increased surface adhesion, scratch and/or abrasion resistance and improved tensile and flexural mechanical properties. The resins can be added to polymer compositions to improve mechanical properties such as impact strength, toughness and tensile, flexural mechanical properties and scratch and/or abrasion resistance. The resins can be used to treat reinforcing fibres used in polymer matrices to improve adhesion at the fibre polymer interface.
The resins can be used at the surface of polymer compositions to improve adhesion to paints.
The resins can be used to form coatings on a substrate.
S
[0024] The silicone resins of the invention can for example be present in thermoplastic or thermoset or rubber or thermoplasticlrubber blends organic polymer compositions or in blend of thermoplastic or blend of thermoset in amounts ranging from 0.1 or 0.5% by weight up to 50 or 75%. Preferred amounts may range from 0.1 to 25% by weight silicone resin in thermoplastic compositions such as polycarbonates, and from 0.2 to 75% by weight in thermosetting compositions such as epoxy resins.
[0025] The invention also provides the use of a silicone resin as defined herein above as a fire-or scratch-andlor abrasion resistant coating on a substrate. The substrate can be for example, a polymer like polycarbonate or an inorganic substrate like glass.
(0026] The invention further provides a thermoplastic or thermoset or rubber or thermoplastic!rubber blends organic polymer composition comprising a thermoplastic or thermoset organic polymer and a silicone resin as defined herein above.
EXAMPLES
[0027] Scratch resistance test is non-standard. Steel wool (000') was pressed against the substrate (-1.5Kg force) and scratch back and forth for 200 cycles. Make visual observation of the coating surface. Rating: excellent means no scratch, good means a few scratch (hardly seen), poor means many scratches (surface hazy).
Example I
[0028] 106.6g tetraethyl orthosilicate (TEOS) was mixed with 108.7g ethanol and 23.Og 0.03 M HCI. H20/Si = 2.5. The whole was stirred at Room Temperature for 65 hours. This mixture solution was denoted as solution A and used as a stock solution.
Example 2
[0029] Drop-casted solution A on glass substrate. A clear hard coating was formed after dry at ST for 24hrs. The coating was heat treated at 120°C for 10-20 minutes. Scratch resistance was poor.
Example 3
[0030] 11.9g solution A and 0.90g B(OMe)3 i.e. B(OCH3)3 were mixed at RI. BISF-1/3. The mixture was aged 24 hrs at RT. Drop casted a coating on glass substrate. A clear hard coating was formed after dry at RI for 24hrs. The coating was heat treated at 120°C for 10-20 minutes.
Scratch resistance was excellent.
Example 4
[0031] 11.9g solution A and 0.53g B(OMe)3 were mixed at PT. BlSh---115. The mixture was aged 24 hrs at RT. Drop casted a coating on glass substrate, A clear hard coating was formed after dry at RT for 24hrs. The coating was heat treated at 120°C for 10-20 minutes. Scratch resistance was excellent.
Example 5
[0032] 1 05.4g methyltrimethoxysilane was mixed with 111.4g ethanol, 20.9g H20, and 2.Og acetic acid. H20/Si = 1.5. the whole was stirred at RI for 71 hours. This mixture solution was denoted as solution B and used as a stock solution.
Example 6
[0033] Solution B was drop-casted on glass substrate. A clear hard coating was formed after dry at ST for 24hrs. The coating was heat treated at 120°C for 10-20 minutes. Scratch resistance was poor.
Example 7
[0034] 12.Og solution B and 4.Og B(CMe)3 were mixed at RT. B1Si---1/3. The mixture was aged 1-24 hrs at RT. Drop casted coatings on glass substrate. Clear hard coating was formed after thy at RT for 24hrs. The coating was heat treated at 120°C for 10-20 minutes. Scratch resistance was good.
Example B
(0035] 12.Og solution Band 2.42g B(OMe)3 were mixed at RT. B(Si=-1/5. The mixture was aged 1-24 hrs at RT. Drop casted coatings on glass substrate. A clear hard coating was formed after dry at RT for 24hrs. The coating was heat treated at 120°C for 10-20 minutes. Scratch resistance was good.
Example 9
[0036] 207.89 tetraethyl orthosilicate was mixed with 108.Og ethanol, 9.Og 0.1 M HCI, and 27.Og H20. H2OtSi =2.0. The whole was stirred at RT for 17 hours. Then added 25.88g B(OMe)3. B/Si = %. Then it was stirred at RI for 5 his. 50 g propyl glycol methyl ether acetate (PGMEA) was added, the solution was drop-casted on polycarbonate and glass substrates.
Clear hard coatings were formed after dry at RI for 24hrs. The coatings were heat treated at 120°C for 10-20 minutes. Scratch resistance was excellent for both coatings on PC and glass substrates.
Example 10
(0037] 156.25 g tetraethyl orthosilicate and I 33.73g methyltriethoxysilane were mixed with 144.99g ethanol, 13.5g 0.1 M HCI, and 40.5g H20. H20/Si = 2.0. It was stirred at RT for 6 hours. Then 38.97g B(OMe)3 were added. B/Si = 1A. The whole was stirred at RT for 17 hrs. 40 g propyl glycol methyl ethei acetate (PGMEA) was added, the solution was drop-casted on polycarbonate and glass substrates. Clear hard coatings were formed after dry at RI for 24hrs.
The coatings were heat treated at 120°C for 10-20 minutes. Scratch resistance was excellent for bath coatings on PC and glass substrates.
Example 11
[0038] 12.Og DC 2403 resin (methyl T)was mixed with 12.09 ethanol, 050g 0.025 MHCI, and 1.7g B(OH)3, stir at RI for 24 hrs, formed a clear solution. Ihe solution was drop-casted on polycarbonate and glass substrates. Clear hard coatings were formed after dry at RI tor 24hrs.
The coating was heat treated at 120°C for 10-20 minutes. Scratch resistance was excellent for both coatings on PC and glass substrates.

Claims (2)

  1. <claim-text>CLAIMS1. Method for the preparation of a solvent-borne silicone resin containing polymetallosiloxane, wherein a. A Metal containing material whose Metal M is chosen from Transition Group metals, lilA Group elements, Zr and Sn b. A silicon containing reactant which is an alkoxysilane or hydroxysilane or alkoxysiloxane or hydroxysiloxane are hydrolysed and condensed in the presence of a solvent that dissolves the polymetallosiloxane and the silicon containing reactant to form metallosiloxane Si-O-M bonds.</claim-text> <claim-text>2. Method according to claim 1 wherein the Metal containing material is at least one boron containing material selected from (i) boric acid of the formula B(OH)3, any of its salts or boric anhydride, (H) boronic acid of the formula Si B(OH)2, (Vi) aikoxyborate of formula B(0R2)3 or R1B(0R2)2, a mixture containing at least two or more of (I), (ii) or (Hi), where Si and 52 are independently alkyl, alkenyl, aryl or arylalkyl substituents.</claim-text> <claim-text>3. Method according to claim 1 wherein the Metal containing material has the general formula M(R3)m where m =17 depending on the oxidation state of the considered Metal, selected from alkoxymetals where R3OR' and R' is an alkyl group, ii metal hydroxyl where R30H.</claim-text> <claim-text>4. The method according to any of claims 1 to 3 wherein an alkoxysilane is used.</claim-text> <claim-text>5. The method according to claim 4 wherein the alkoxysilane is tetraethyl orthosilicate, methyltriethoxysilane or methyltrimethoxysilane or a mixture of them.</claim-text> <claim-text>6. The method according to any of claims Ito 5 wherein the solvent is an organic solvent.</claim-text> <claim-text>7. A solvent-borne silicone resin comprising a. at least one polymetaflosiloxane which contains Si-O-M bonds whose Metal M is chosen from Transition Group metals, lIlA Group elements, Zr and Sn, b. at least one solvent that can dissolve the polymetallosiloxane.</claim-text> <claim-text>8. The silicone resin according to claim 7 which contains T units; D; M' and/or Q units.</claim-text> <claim-text>9. The silicone resin according to claim 7 or 8 wherein the Metal M is boron.</claim-text> <claim-text>10. The silicone resin according to any of claims 7 to 9 wherein the molar ratio of Metal atom to Si atom ranges from 0.01 to 6, preferably 0.1 to
  2. 2.</claim-text> <claim-text>11. The silicone resin according to any of claims ito 10 wherein the solvent is an organic solvent.</claim-text> <claim-text>12. Use of the silicone resin as claimed in any of claims 7 to 11 in a thermoplastic or thermosetting organic polymer or rubbers or thermoplastic! rubbers blends composition to enhance scratch and/or abrasion resistance of the composition.</claim-text> <claim-text>13. Use of a silicone resin as claimed in any of claims 7 to 11 as a scratch resistant coating on a substrate.</claim-text> <claim-text>14. A thermoplastic or thermoset organic polymer or rubbers or thermoplastic / rubbers blends composition comprising a thermoplastic or thermoset organic polymer or rubbers or thermoplastic / rubbers blends and a silicone resin as claimed in any of claims 7to II.</claim-text> <claim-text>15. A scratch and!or abrasion resistant coating on a substrate wherein the coating comprises a silicone resin according to any of claims 7 to 11.</claim-text> <claim-text>16. A scratch and/or abrasion resistant coating according to claim 15 wherein the coating is transparent.</claim-text>
GB1211240.5A 2011-11-17 2012-06-25 Solvent-borne scratch resistant coating compositions containing polymetallosiloxanes Withdrawn GB2496708A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113845684A (en) * 2021-09-15 2021-12-28 安徽坤涂新材料科技有限公司 Production process of wear-resistant PC glass plate
CN118460104A (en) * 2024-05-08 2024-08-09 常州市武进虹灵化工有限公司 Boron modified organic silicon resin high-temperature-resistant coating and preparation method thereof

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4152509A (en) * 1976-09-30 1979-05-01 The Foundation: The Research Institute For Special Inorganic Materials Borosiloxane polymers and a method for producing the same
EP0327311A2 (en) * 1988-02-02 1989-08-09 Hitachi Chemical Co., Ltd. A coating fluid for forming an oxide coating
WO2008018981A2 (en) * 2006-08-04 2008-02-14 Dow Corning Corporation Silicone resin and silicone composition
US20100125123A1 (en) * 1999-08-04 2010-05-20 Lichtenhan Joseph D Metallized nanostructured chemicals as cure promoters

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4152509A (en) * 1976-09-30 1979-05-01 The Foundation: The Research Institute For Special Inorganic Materials Borosiloxane polymers and a method for producing the same
EP0327311A2 (en) * 1988-02-02 1989-08-09 Hitachi Chemical Co., Ltd. A coating fluid for forming an oxide coating
US20100125123A1 (en) * 1999-08-04 2010-05-20 Lichtenhan Joseph D Metallized nanostructured chemicals as cure promoters
WO2008018981A2 (en) * 2006-08-04 2008-02-14 Dow Corning Corporation Silicone resin and silicone composition

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113845684A (en) * 2021-09-15 2021-12-28 安徽坤涂新材料科技有限公司 Production process of wear-resistant PC glass plate
CN113845684B (en) * 2021-09-15 2022-11-29 安徽坤涂新材料科技有限公司 Production process of wear-resistant PC glass plate
CN118460104A (en) * 2024-05-08 2024-08-09 常州市武进虹灵化工有限公司 Boron modified organic silicon resin high-temperature-resistant coating and preparation method thereof

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