WO2005087831A1 - 重合性不飽和結合を有するアクリル系重合体の製造方法 - Google Patents
重合性不飽和結合を有するアクリル系重合体の製造方法 Download PDFInfo
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- WO2005087831A1 WO2005087831A1 PCT/JP2005/003372 JP2005003372W WO2005087831A1 WO 2005087831 A1 WO2005087831 A1 WO 2005087831A1 JP 2005003372 W JP2005003372 W JP 2005003372W WO 2005087831 A1 WO2005087831 A1 WO 2005087831A1
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- Prior art keywords
- polymerizable unsaturated
- acrylic polymer
- unsaturated bond
- carboxylic acid
- polymer
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Classifications
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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
- C08G59/00—Polycondensates containing more than one epoxy group per molecule; Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups
- C08G59/14—Polycondensates modified by chemical after-treatment
- C08G59/1433—Polycondensates modified by chemical after-treatment with organic low-molecular-weight compounds
- C08G59/1438—Polycondensates modified by chemical after-treatment with organic low-molecular-weight compounds containing oxygen
- C08G59/1455—Monocarboxylic acids, anhydrides, halides, or low-molecular-weight esters thereof
Definitions
- the present invention relates to a novel and useful method for producing an active energy ray-curable resin and an active energy ray-curable resin composition using the same. More specifically, the present invention provides a cured coating film having a tack-free surface after volatilization of a solvent, a good surface condition without adhesion of dust and dust, excellent curability, and excellent chemical resistance and flexibility.
- the present invention relates to an active energy ray-curable resin suitable for an active energy linear curable resin composition used as a top tall layer of metal products and plastic products.
- Molded products such as metal parts, plastic products, and woodwork products, are often coated with a paint on the surface of the molded product in order to impart durability and design.
- a paint on the surface of the molded product in order to impart durability and design.
- the molded product to be painted (hereinafter referred to as an object to be coated) is made of a wide variety of materials and shapes, a spray painting-dip painting method, which can relatively easily paint them, is often used.
- the laminated film used in the above-described film decorating method includes film characteristics such as hardness, non-adhesion, and solvent resistance of the film, which are realized by a film forming method such as spray coating, and the like. Workability is required to favorably decorate the film to be coated. However, it is difficult for the above-mentioned conventional laminated film to secure the above-mentioned coating film characteristics and processability at the same time. It was. In other words, there is a problem that when the characteristics of the coating film are emphasized, the processability is reduced, and it is difficult to secure the characteristics of the coating film when the processability is emphasized.
- the present invention has been made to solve the above-mentioned conventional problems, and an object of the present invention is to ensure excellent design properties and coating film properties equal to or higher than those of a conventional spray coating method and the like. It has excellent processability such that suitable decoration can be performed following the shape of the object to be coated, and is suitable for an active energy ray-curable resin composition used as a top tally layer of a laminated film. Another object of the present invention is to provide a method for producing an acrylic polymer having a polymerizable unsaturated bond.
- the inventors of the present invention have conducted intensive studies on the above problem, and as a result, introduced an unsaturated double bond, which is cured by an active energy ray, into an acrylic polymer as a side chain. By controlling the bond length, it is possible to achieve both the properties of various coatings and the processability, which were difficult with the conventional technology, and the polymerizable unsaturated bond is suitable for active energy ray-curable resin compositions.
- the present inventors have found a method for producing an acrylic polymer having the above formula, and have completed the present invention.
- the present invention is characterized by the following items (1) to (7).
- the short-chain unsaturated carboxylic acid (dl) and the long-chain unsaturated carboxylic acid (d2) are each 20 mol% or more and 80 mol based on the total molar amount (dl + d 2). %.
- the reactive unsaturated double bond group power contained in the acrylic polymer (A) is in the range of 0.67 mol Zkg or more and 3.3 mol Zkg or less.
- the epoxy group-containing copolymer (c) has a glass transition temperature of 50 ° C. or more and 130 ° C. or less, wherein The method for producing an acrylic polymer (A) having a polymerizable unsaturated bond according to the above.
- the acrylic polymer (A) having a polymerizable unsaturated bond produced by the present invention ensures the tackiness of the coating film before curing, the hardness and chemical resistance of the coating film after curing, and is excellent. Since it has excellent workability, it is suitable for an active energy ray-curable resin composition. Particularly, it is suitable for the active energy ray-curable resin composition used for the top tall layer of the laminated film in the film decoration method.
- the present application is accompanied by a priority claim based on Japanese Patent Application No. 2004-068170 (filing date: March 10, 2004) filed earlier by the same applicant, and Incorporated here for reference.
- the method for producing an acrylic polymer (A) having a polymerizable unsaturated bond comprises a polymerizable unsaturated compound having at least one epoxy group and one polymerizable unsaturated bond in the molecule ( (c) an epoxy group-containing copolymer obtained by copolymerization of (a) and a polymerizable unsaturated compound having one polymerizable unsaturated bond in the molecule other than the component (a);
- the acrylic polymer (A) is synthesized by reacting a short-chain unsaturated carboxylic acid (dl) with a molecular weight of less than 150 with a long-chain unsaturated carboxylic acid (d2) with a molecular weight of 150 or more.
- the feature is that.
- the acrylic polymer (A) obtained by the present invention has acrylic acid or methacrylic acid in its main chain structure (hereinafter, both are collectively referred to as (meth) acrylic acid or (meth) acrylate). ) Containing one or more polymerizable short-side unsaturated double bond groups and one long-side unsaturated double bond group in the side chain that contains the acrylic resin structure obtained by polymerizing the derivative. Have more.
- these polymerizable unsaturated double bond groups mean substituents which are cross-linked by intramolecular or intermolecular reaction, each of which contains an epoxy group which is a precursor of the acrylic polymer (A).
- the copolymer (c) is introduced by reacting the above-mentioned short-chain unsaturated carboxylic acid (dl) and the above-mentioned long-chain unsaturated force rubonic acid (d2).
- An epoxy group-containing copolymer (c) is synthesized by copolymerizing a polymerizable unsaturated compound (b) having one polymerizable unsaturated bond therein.
- the component (a) is not particularly limited as long as it is a polysynthetic unsaturated compound having at least one epoxy group and one polymerizable unsaturated bond in the molecule, and is not particularly limited, but may be acrylic acid or methacrylic acid. It is preferable that the compound be a compound of an acid derivative and an epoxy group-containing compound, for example, glycidyl (meth) acrylate, 3,4-epoxycyclohexyl (meth) acrylate, and the like. Epoxy group-containing (meth) acrylates may be used, and these may be used alone or in combination of two or more.
- the component (b) is not particularly limited as long as it is an unsaturated compound having one polymerizable unsaturated bond in the molecule other than the component (a), and is not particularly limited.
- Preferred are various esters ofizic acid.
- methyl (meth) acrylate ((meth) atalylate refers to atalylate and methacrylate.
- Alkoxyalkoxyalkyl (meth) acrylates such as hydroxyalkyl (meth) acrylates, 2-methoxyethoxyxetyl (meth) atalylate, 2-ethoxyethoxyxyl (meth) atalylate, and methoxydiethylene glycol (meth) Alkoxy (poly) alkylenes such as atalylate, ethoxydiethylene glycol (meth) atalylate, methoxytriethylene glycol (meth) atalylate, butoxytriethylene glycol (meth) atalylate, and methoxydipropylene glycol (meth) atalylate Glycol (meth) atalylate, pyrenoxide adduct
- Dialkylaminoalkyl such as (meth) acrylate, octafluoropentyl (meth) acrylate, N, N-dimethylaminoethyl (meth) acrylate, N, N- acetylaminoethyl (meth) acrylate
- Examples thereof include a mixture having one or more combinations such as (meth) atarylate.
- the component (a) and the component (b) are copolymerized by a known method such as a solution polymerization method in the presence of a radical polymerization initiator to obtain an epoxy group-containing copolymer (c).
- these compounding amounts are based on 100 parts by weight of the total amount of the component (a) and the component (b) ⁇ (a) + (b) ⁇ .
- the component (a) is preferably 10 to 60 parts by weight, more preferably 20 to 45 parts by weight, and the component (b) is preferably 40 to 90 parts by weight, more preferably 55 to 80 parts by weight.
- the amount of the component (a) is less than 10 parts by weight, the curability and the performance of the cured film obtained as an active energy ray-curable coating material tend to decrease overall, and the amount exceeds 60 parts by weight. And the tackiness of the coating film tends to decrease.
- the weight average molecular weight (gel permeation 'chromatography method, standard polystyrene conversion value) of the epoxy group-containing copolymer (c) thus obtained is preferably from 30,000 to 200,000. More preferably, it is 50,000-150,000.
- the weight-average molecular weight of the epoxy group-containing copolymer (c) is less than 30,000, the tackiness of the coating film obtained when the acrylic polymer (A) is used as an active energy ray-curable coating is reduced.
- the abrasion resistance of the coating film after curing tends to be inferior.
- the weight average molecular weight exceeds 200,000, the compatibility with other resin compositions (such as active energy ray-curable resin oligomers) decreases, and the viscosity increases. When diluted to the coating viscosity, the solid content is significantly reduced and the coating properties tend to be reduced.
- the glass transition temperature of the epoxy group-containing copolymer (c) is preferably from 50 to 130 ° C., more preferably from 60 to 110 ° C.
- the glass transition temperature of the epoxy group-containing copolymer (c) is less than 50 ° C, non-stickiness of a coating film obtained when the acrylic polymer (A) is used as an active energy ray-curable coating material.
- the temperature exceeds 130 ° C, the appearance, curability and coatability of the resulting coating film tend to decrease.
- the side chain of the epoxy group-containing copolymer (c) is unsaturated dicarboxylic acid.
- a heavy bond group is introduced to obtain an acrylic polymer (A).
- a short-chain unsaturated carboxylic acid (dl) having a molecular weight of less than 150 (more preferably, a molecular weight of 72 or more and less than 100), and a molecular weight of 150 or more (more preferably) Use at least one long-chain unsaturated carboxylic acid (d2) with a molecular weight of 200 to less than 1000).
- Examples of the short-chain unsaturated carboxylic acid (dl) include (meth) acrylic acid and a dimer thereof (ALONIX M5600). Further, the long-chain unsaturated carboxylic acid (d Examples of 2) include, for example, modified force-pro-rataton (meth) acrylic acid ( ⁇ -carboxy-poly-pro-pro-ratatone mono-atalylate: Aronics # 5300 manufactured by Toagosei Co., Ltd.), hydroxyl-containing (meth) acrylate and carboxylic anhydride.
- This reaction can be performed by a known method in the presence of a basic catalyst, a phosphorus-based catalyst, and the like.
- the content of the short-chain unsaturated carboxylic acid (dl) preferably has a lower limit of 20 mol% or more.
- the upper limit which is more preferably 33 mol% or more, is preferably 80 mol% or less, and more preferably 67 mol% or less.
- the content of the long-chain unsaturated carboxylic acid (d2) is preferably 20 mol% or more, more preferably 33 mol% or more, and the upper limit is more preferably 80 mol% or less. More preferably, it is 67 mol% or less.
- the coating film tends to have poor chemical resistance and coating film hardness, which is not preferable.
- the content of the short-chain unsaturated carboxylic acid (dl) exceeds 80 mol% or the content of the long-chain unsaturated carboxylic acid (d2) is less than 20 mol%, the active energy ray-curable paint was obtained.
- the flexibility of the coating film after curing tends to be inferior, which is not preferable.
- the hydroxyl group contained in the acrylic polymer (A) obtained above has one isocyanato group and one or more polymerizable unsaturated bonds in the molecule.
- An isocyanato group-containing polymerizable unsaturated compound (e) may be subjected to an addition reaction.
- Examples of the isocyanato group-containing polymerizable unsaturated compound (e) include methacryloyloxyshethyl isocyanate (trade name MOI manufactured by Showa Denko KK) and 1 mole of 2-hydroxyethyl acrylate.
- Hexamethylene diisocyanate Obtained by reacting a (meth) atalylate ligated product having one hydroxyl group in the molecule with a diisocyanated ligated product, such as 1 mol of hexamethylene diisocyanate. And an isocyanato group-containing (meth) atalyle having one isocyanato group in the molecule.
- the compounding amount of the isocyanato group-containing polymerizable unsaturated compound (e) is from 0.1 equivalent to 0.8 equivalent to the hydroxyl group contained in the acrylic polymer (A) obtained above. It is more preferable to add so that the amount becomes 0.2 to 0.7 equivalents. If the compounding amount of the isocyanato group-containing polymerizable unsaturated compound (e) is less than 0.1 equivalent to the above hydroxyl group, after the acrylic polymer (A) is cured as an active energy ray-curable coating, Is unfavorable because the film properties tend to decrease overall.
- the acrylic polymer (A) will be cured when it is used as an active energy ray-curable coating. This is not preferable because the properties of the coating film such as the appearance of the coating film afterwards tend to decrease.
- the weight-average molecular weight (gel permeation 'chromatography method, standard polystyrene equivalent value) of the acrylic polymer (A) having a polymerizable unsaturated bond obtained as described above is 50,000-500 , 000, more preferably 80,000-400,000. If the weight average molecular weight of the acrylic polymer (A) is less than 50,000, the tackiness of the coating film obtained when the acrylic polymer (A) is used as an active energy ray-curable coating tends to decrease. And the hardness of the cured coating film tends to be inferior.
- the weight average molecular weight of the acrylic polymer (A) exceeds 500,000, the compatibility with other resin compositions (such as active energy ray-cured resin oligomers) decreases, and the viscosity increases.
- the solid content tends to decrease significantly and the coating properties tend to decrease.
- the reactive unsaturated double bond group contained in the acrylic polymer (A) has a lower limit of It is preferable that the value is 0.67 mol / kg or more. 1. More preferably 1 mol / kg or more. The upper limit is 3.3 mol or less. More preferably, it is not more than mol Zkg.
- the reactive unsaturated double bond group contained in the acrylic polymer (A) is less than 0.67 mol Zkg, curing when the acrylic polymer (A) is used as an active energy ray-curable coating material. Film properties such as hardness and solvent resistance of the film tend to decrease, which is not preferable.
- the amount of the reactive unsaturated double bond group exceeds 3.3 mol Zkg
- the acryl-based polymer (A) when used as an active energy ray-curable coating material, it becomes incompatible with other polymerizable oligomers and the like. The solubility tends to decrease, the appearance of the coating film tends to decrease, and the flexibility after curing tends to decrease, which is not preferred.
- the hydroxyl value of the acrylic polymer (A) is preferably from 30 to 125, more preferably from 50 to 100. If the hydroxyl value of the acrylic polymer (A) is less than 30, the compatibility with other resin compositions (such as active energy ray-cured resin oligomers) is reduced, and the coating film tends to become turbid. If it exceeds 125, the water resistance of the Taliya coating film tends to decrease, which is not preferable.
- the epoxy group-containing copolymers (c) of Examples 15 and Comparative Examples 1 and 2 were produced according to the formulations shown in Table 1 below. That is, (I) was charged into a reaction vessel, and heated to 110 ° C. while stirring under a nitrogen gas atmosphere. At 110 ° C, ( ⁇ ) (a mixed solution of the above polymerizable monomer component and perbutyl O (trade name, t-butylperoxy 2-ethylhexanoate, manufactured by NOF Corporation) as a polymerization initiator) was added dropwise over 2 hours. . After completion of the dropwise addition, the reaction was further performed at 110 ° C. for 1 hour, and then (III) was added dropwise over 1 hour.
- ⁇ a mixed solution of the above polymerizable monomer component and perbutyl O (trade name, t-butylperoxy 2-ethylhexanoate, manufactured by NOF Corporation) as a polymerization initiator
- Tg Tg of homopolymer of each component
- a polymerizable unsaturated bond was introduced into the epoxy group-containing copolymer (c) of each of the Examples and Comparative Examples obtained above according to the formulation shown in Table 2 below, and an acrylic polymer having a polymerizable unsaturated bond was introduced.
- Polymer (A) was obtained. That is, (V) was charged into a reaction vessel, and heated to 90 ° C. with stirring while blowing air. Add (VI) at 90 ° C, perform reaction at 90 ° C for 1 hour, then heat to 105 ° C, and react at 105 ° C until the acid value of the resin solids is 8 or less. I did it. After adding (VII), raise the temperature to 75 ° C, add (VIII) (Showa Denko Co., Ltd.
- A1 Parts by weight of short-chain unsaturated carboxylic acid compound
- A2 parts by weight of long chain unsaturated carboxylic acid compound
- P1 parts by weight of components excluding isocyanato group-containing compound
- the sample was titrated with a 0.1N potassium hydroxide solution according to JIS K5601-2--1, and the acid value was calculated by the following formula.
- Irgacure 184 (Ciba Specialty Chemicals) was used as a photopolymerization initiator with respect to the solid weight lOOg of the acrylic polymer (A) having a polymerizable unsaturated bond in each of the examples and comparative examples obtained above. Co., Ltd .; solid content weight 100%) and paint solid content 35% Toluene was mixed and stirred and mixed to obtain an active energy ray-curable tarry coating.
- the above-mentioned Talia coating was applied to a glass plate and a tin plate (0.5 mm thick) with a bar coater # 60, and dried at 80 ° C for 10 minutes. Then, the test plate was irradiated with an ultraviolet (UV) irradiator UV
- UV irradiation was performed using 8408 (manufactured by Nippon Battery Co., Ltd.) with an integrated light amount of 2, OOOmjZcm 2 to prepare a cured coating film.
- test plate was evaluated for tackiness, hardness, chemical resistance, and flexibility.
- the test method and test results (Table 3) are described below.
- test plates before and after the UV curing were dried at 80 ° C for 10 minutes, and then left at 25 ° C for 5 minutes, and the tackiness of the tarry coating film was determined by finger touch according to the following criteria.
- Pencil hardness was measured in accordance with JIS K5699-5-4, and it was judged as pass ( ⁇ ) when it was HB or more, and was judged as reject (X) when it was less than HB.
- the coating was rubbed 100 times with gauze containing methyl ethyl ketone, and the appearance of the coating was evaluated.
- test plate of the tinplate base material was evaluated according to JIS K5600-5-1, using a mandrel with a diameter of 32 mm.
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Priority Applications (1)
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JP2006510909A JP5125100B2 (ja) | 2004-03-10 | 2005-03-01 | 重合性不飽和結合を有するアクリル系重合体の製造方法 |
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JP2004-068170 | 2004-03-10 | ||
JP2004068170 | 2004-03-10 |
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2008274209A (ja) * | 2007-05-04 | 2008-11-13 | Chang Chun Plastic Co Ltd | 紫外線硬化樹脂、その製造方法と該樹脂を含有する組成物 |
WO2017175430A1 (ja) * | 2016-04-06 | 2017-10-12 | 三菱ケミカル株式会社 | 熱硬化性樹脂組成物、シートモールディングコンパウンド及びその製造方法、並びに繊維強化複合材料 |
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JPH06161108A (ja) * | 1992-11-17 | 1994-06-07 | Hitachi Chem Co Ltd | 感光性樹脂組成物及びこれを用いた感光性エレメント |
JP2001059005A (ja) * | 1999-08-24 | 2001-03-06 | Hitachi Chem Co Ltd | 光硬化性樹脂組成物及び塗料 |
JP2003336004A (ja) * | 2002-05-21 | 2003-11-28 | Mitsui Chemicals Inc | アクリル系熱硬化性粉体塗料組成物 |
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JP3413893B2 (ja) * | 1993-09-01 | 2003-06-09 | 株式会社日本触媒 | 感光性樹脂組成物 |
JP3718295B2 (ja) * | 1995-08-11 | 2005-11-24 | ジャパンコンポジット株式会社 | ビニルエステル樹脂組成物及び硬化物 |
JPH0987346A (ja) * | 1995-09-19 | 1997-03-31 | Dainippon Ink & Chem Inc | エネルギ−線硬化型エポキシアクリレ−ト樹脂組成物 |
JPH10306138A (ja) * | 1997-03-03 | 1998-11-17 | Hitachi Chem Co Ltd | 感光性樹脂組成物及びこれを用いたプリント配線板の製造方法 |
JP2000292921A (ja) * | 1999-04-12 | 2000-10-20 | Hitachi Chem Co Ltd | 感光性樹脂組成物、これを用いたレジストパターンの製造法及び電気回路板の製造法 |
JP4363077B2 (ja) * | 2002-07-12 | 2009-11-11 | 三菱化学株式会社 | 活性エネルギー線硬化性組成物及びハードコートフィルム |
-
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- 2005-03-01 JP JP2006510909A patent/JP5125100B2/ja not_active Expired - Fee Related
- 2005-03-01 WO PCT/JP2005/003372 patent/WO2005087831A1/ja active Application Filing
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
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JPH06161108A (ja) * | 1992-11-17 | 1994-06-07 | Hitachi Chem Co Ltd | 感光性樹脂組成物及びこれを用いた感光性エレメント |
JP2001059005A (ja) * | 1999-08-24 | 2001-03-06 | Hitachi Chem Co Ltd | 光硬化性樹脂組成物及び塗料 |
JP2003336004A (ja) * | 2002-05-21 | 2003-11-28 | Mitsui Chemicals Inc | アクリル系熱硬化性粉体塗料組成物 |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2008274209A (ja) * | 2007-05-04 | 2008-11-13 | Chang Chun Plastic Co Ltd | 紫外線硬化樹脂、その製造方法と該樹脂を含有する組成物 |
WO2017175430A1 (ja) * | 2016-04-06 | 2017-10-12 | 三菱ケミカル株式会社 | 熱硬化性樹脂組成物、シートモールディングコンパウンド及びその製造方法、並びに繊維強化複合材料 |
US10920009B2 (en) | 2016-04-06 | 2021-02-16 | Mitsubishi Chemical Corporation | Thermosetting resin composition, sheet-molding compound and production method therefor, and fiber-reinforced composite material |
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