WO2022107483A1 - 結合剤、固化体、及び固化体の製造方法 - Google Patents
結合剤、固化体、及び固化体の製造方法 Download PDFInfo
- Publication number
- WO2022107483A1 WO2022107483A1 PCT/JP2021/037227 JP2021037227W WO2022107483A1 WO 2022107483 A1 WO2022107483 A1 WO 2022107483A1 JP 2021037227 W JP2021037227 W JP 2021037227W WO 2022107483 A1 WO2022107483 A1 WO 2022107483A1
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- WO
- WIPO (PCT)
- Prior art keywords
- polyhydric alcohol
- group
- binder
- containing polymer
- carboxyl group
- Prior art date
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- 150000001805 chlorine compounds Chemical class 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- LDHQCZJRKDOVOX-NSCUHMNNSA-N crotonic acid Chemical compound C\C=C\C(O)=O LDHQCZJRKDOVOX-NSCUHMNNSA-N 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 125000000113 cyclohexyl group Chemical group [H]C1([H])C([H])([H])C([H])([H])C([H])(*)C([H])([H])C1([H])[H] 0.000 description 1
- HPNMFZURTQLUMO-UHFFFAOYSA-N diethylamine Chemical class CCNCC HPNMFZURTQLUMO-UHFFFAOYSA-N 0.000 description 1
- WHGNXNCOTZPEEK-UHFFFAOYSA-N dimethoxy-methyl-[3-(oxiran-2-ylmethoxy)propyl]silane Chemical compound CO[Si](C)(OC)CCCOCC1CO1 WHGNXNCOTZPEEK-UHFFFAOYSA-N 0.000 description 1
- 235000011180 diphosphates Nutrition 0.000 description 1
- KDQPSPMLNJTZAL-UHFFFAOYSA-L disodium hydrogenphosphate dihydrate Chemical compound O.O.[Na+].[Na+].OP([O-])([O-])=O KDQPSPMLNJTZAL-UHFFFAOYSA-L 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 125000003438 dodecyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
- 239000003480 eluent Substances 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 150000002169 ethanolamines Chemical class 0.000 description 1
- 125000000816 ethylene group Chemical group [H]C([H])([*:1])C([H])([H])[*:2] 0.000 description 1
- 239000012765 fibrous filler Substances 0.000 description 1
- 238000010528 free radical solution polymerization reaction Methods 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 125000000524 functional group Chemical group 0.000 description 1
- 230000014509 gene expression Effects 0.000 description 1
- 239000011491 glass wool Substances 0.000 description 1
- 239000011487 hemp Substances 0.000 description 1
- XXMIOPMDWAUFGU-UHFFFAOYSA-N hexane-1,6-diol Chemical compound OCCCCCCO XXMIOPMDWAUFGU-UHFFFAOYSA-N 0.000 description 1
- 229920001519 homopolymer Polymers 0.000 description 1
- 150000004677 hydrates Chemical class 0.000 description 1
- 150000004679 hydroxides Chemical class 0.000 description 1
- TVZISJTYELEYPI-UHFFFAOYSA-N hypodiphosphoric acid Chemical compound OP(O)(=O)P(O)(O)=O TVZISJTYELEYPI-UHFFFAOYSA-N 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 239000010954 inorganic particle Substances 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 125000001449 isopropyl group Chemical group [H]C([H])([H])C([H])(*)C([H])([H])[H] 0.000 description 1
- 150000004715 keto acids Chemical class 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 229910003002 lithium salt Inorganic materials 0.000 description 1
- 159000000002 lithium salts Chemical class 0.000 description 1
- 159000000003 magnesium salts Chemical class 0.000 description 1
- FPYJFEHAWHCUMM-UHFFFAOYSA-N maleic anhydride Chemical compound O=C1OC(=O)C=C1 FPYJFEHAWHCUMM-UHFFFAOYSA-N 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 239000011490 mineral wool Substances 0.000 description 1
- 150000002762 monocarboxylic acid derivatives Chemical class 0.000 description 1
- QNILTEGFHQSKFF-UHFFFAOYSA-N n-propan-2-ylprop-2-enamide Chemical compound CC(C)NC(=O)C=C QNILTEGFHQSKFF-UHFFFAOYSA-N 0.000 description 1
- 125000001624 naphthyl group Chemical group 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- 125000002560 nitrile group Chemical group 0.000 description 1
- 125000004433 nitrogen atom Chemical group N* 0.000 description 1
- 125000000962 organic group Chemical group 0.000 description 1
- 239000011146 organic particle Substances 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 150000002903 organophosphorus compounds Chemical class 0.000 description 1
- 238000001139 pH measurement Methods 0.000 description 1
- WCVRQHFDJLLWFE-UHFFFAOYSA-N pentane-1,2-diol Chemical compound CCCC(O)CO WCVRQHFDJLLWFE-UHFFFAOYSA-N 0.000 description 1
- 125000000843 phenylene group Chemical group C1(=C(C=CC=C1)*)* 0.000 description 1
- ACVYVLVWPXVTIT-UHFFFAOYSA-M phosphinate Chemical compound [O-][PH2]=O ACVYVLVWPXVTIT-UHFFFAOYSA-M 0.000 description 1
- OJMIONKXNSYLSR-UHFFFAOYSA-N phosphorous acid Chemical compound OP(O)O OJMIONKXNSYLSR-UHFFFAOYSA-N 0.000 description 1
- 229920001495 poly(sodium acrylate) polymer Polymers 0.000 description 1
- 239000004584 polyacrylic acid Substances 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 230000000379 polymerizing effect Effects 0.000 description 1
- XAEFZNCEHLXOMS-UHFFFAOYSA-M potassium benzoate Chemical compound [K+].[O-]C(=O)C1=CC=CC=C1 XAEFZNCEHLXOMS-UHFFFAOYSA-M 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000003449 preventive effect Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 description 1
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 description 1
- MWWATHDPGQKSAR-UHFFFAOYSA-N propyne Chemical group CC#C MWWATHDPGQKSAR-UHFFFAOYSA-N 0.000 description 1
- 230000005588 protonation Effects 0.000 description 1
- 229940048084 pyrophosphate Drugs 0.000 description 1
- 229940005657 pyrophosphoric acid Drugs 0.000 description 1
- 229920005604 random copolymer Polymers 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 159000000000 sodium salts Chemical class 0.000 description 1
- 229910052938 sodium sulfate Inorganic materials 0.000 description 1
- 235000011152 sodium sulphate Nutrition 0.000 description 1
- TYCZGOVEQKRYGI-UHFFFAOYSA-M sodium;dihydrogen phosphate;dodecahydrate Chemical compound O.O.O.O.O.O.O.O.O.O.O.O.[Na+].OP(O)([O-])=O TYCZGOVEQKRYGI-UHFFFAOYSA-M 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 125000000542 sulfonic acid group Chemical group 0.000 description 1
- 230000002194 synthesizing effect Effects 0.000 description 1
- LDHQCZJRKDOVOX-UHFFFAOYSA-N trans-crotonic acid Natural products CC=CC(O)=O LDHQCZJRKDOVOX-UHFFFAOYSA-N 0.000 description 1
- 229910052723 transition metal Inorganic materials 0.000 description 1
- 150000003624 transition metals Chemical class 0.000 description 1
- ZIBGPFATKBEMQZ-UHFFFAOYSA-N triethylene glycol Chemical compound OCCOCCOCCO ZIBGPFATKBEMQZ-UHFFFAOYSA-N 0.000 description 1
- GETQZCLCWQTVFV-UHFFFAOYSA-N trimethylamine Chemical class CN(C)C GETQZCLCWQTVFV-UHFFFAOYSA-N 0.000 description 1
- FIQMHBFVRAXMOP-UHFFFAOYSA-N triphenylphosphane oxide Chemical compound C=1C=CC=CC=1P(C=1C=CC=CC=1)(=O)C1=CC=CC=C1 FIQMHBFVRAXMOP-UHFFFAOYSA-N 0.000 description 1
- 229930195735 unsaturated hydrocarbon Natural products 0.000 description 1
- 229920001567 vinyl ester resin Polymers 0.000 description 1
- NLVXSWCKKBEXTG-UHFFFAOYSA-N vinylsulfonic acid Chemical compound OS(=O)(=O)C=C NLVXSWCKKBEXTG-UHFFFAOYSA-N 0.000 description 1
- 210000002268 wool Anatomy 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/04—Oxygen-containing compounds
- C08K5/05—Alcohols; Metal alcoholates
- C08K5/053—Polyhydroxylic alcohols
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L101/00—Compositions of unspecified macromolecular compounds
- C08L101/02—Compositions of unspecified macromolecular compounds characterised by the presence of specified groups, e.g. terminal or pendant functional groups
- C08L101/06—Compositions of unspecified macromolecular compounds characterised by the presence of specified groups, e.g. terminal or pendant functional groups containing oxygen atoms
- C08L101/08—Carboxyl groups
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F120/00—Homopolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride, ester, amide, imide or nitrile thereof
- C08F120/02—Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
- C08F120/04—Acids; Metal salts or ammonium salts thereof
- C08F120/06—Acrylic acid; Methacrylic acid; Metal salts or ammonium salts thereof
-
- 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
- C08G63/00—Macromolecular compounds obtained by reactions forming a carboxylic ester link in the main chain of the macromolecule
- C08G63/02—Polyesters derived from hydroxycarboxylic acids or from polycarboxylic acids and polyhydroxy compounds
- C08G63/12—Polyesters derived from hydroxycarboxylic acids or from polycarboxylic acids and polyhydroxy compounds derived from polycarboxylic acids and polyhydroxy compounds
- C08G63/52—Polycarboxylic acids or polyhydroxy compounds in which at least one of the two components contains aliphatic unsaturation
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J3/00—Processes of treating or compounding macromolecular substances
- C08J3/02—Making solutions, dispersions, lattices or gels by other methods than by solution, emulsion or suspension polymerisation techniques
- C08J3/03—Making solutions, dispersions, lattices or gels by other methods than by solution, emulsion or suspension polymerisation techniques in aqueous media
- C08J3/07—Making solutions, dispersions, lattices or gels by other methods than by solution, emulsion or suspension polymerisation techniques in aqueous media from polymer solutions
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/16—Nitrogen-containing compounds
- C08K5/17—Amines; Quaternary ammonium compounds
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/54—Silicon-containing compounds
- C08K5/541—Silicon-containing compounds containing oxygen
- C08K5/5415—Silicon-containing compounds containing oxygen containing at least one Si—O bond
- C08K5/5419—Silicon-containing compounds containing oxygen containing at least one Si—O bond containing at least one Si—C bond
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/54—Silicon-containing compounds
- C08K5/544—Silicon-containing compounds containing nitrogen
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2333/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Derivatives of such polymers
- C08J2333/02—Homopolymers or copolymers of acids; Metal or ammonium salts thereof
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/01—Magnetic additives
Definitions
- the present disclosure relates to a binder, a solidified body, and a method for producing the solidified body.
- a heat-resistant molded body formed into a mat by attaching a binder to a filler such as glass fiber is widely used as a heat insulating material for houses, warehouses, appliances and equipment.
- a binder a phenol-formaldehyde binder is widely used.
- the phenol-formaldehyde binder has a problem that unreacted formaldehyde remains in the molded product and formaldehyde is released after the construction of a house or the like. Therefore, a binder that does not emit formaldehyde has been studied.
- Patent Documents 1 to 3 a reaction between a carboxyl group-containing polymer such as a polyacrylic acid-based polymer and a hydroxyl group of itself or a polyhydric alcohol as a cross-linking agent as a binder that does not emit formaldehyde. Binders that cure with formaldehyde have been proposed.
- the binder of the present disclosure contains a carboxyl group-containing polymer having a weight average molecular weight of 2000 to 6000 g / mol and a polyhydric alcohol, and the carboxylic acid group of the carboxyl group-containing polymer and the polyhydric alcohol.
- the molar ratio is 79:21 to 35:65
- the polyhydric alcohol contains a polyhydric alcohol having a viscosity of 900 mPa ⁇ s or less at 20 ° C.
- the binder of the present disclosure contains a carboxyl group-containing polymer having a weight average molecular weight of 2000 to 6000 g / mol and a polyhydric alcohol, and the carboxylic acid group of the carboxyl group-containing polymer and the polyhydric alcohol.
- the molar ratio of the polyhydric alcohol is 79:21 to 35:65, and the polyhydric alcohol contains at least one compound selected from the group consisting of a hydrocarbon compound substituted with 2 to 10 hydroxyl groups and a polyalkylene glycol. It may be a thing.
- the hydrocarbon compounds substituted with the hydroxyl groups are ethylene glycol, propylene glycol, 1,3-propanediol, 1,3-butylene glycol, 1,4-butanediol, 1,5-pentanediol, and 1,6-hexane. It is preferably at least one selected from the group consisting of diol, glycerin, trimethylolpropane, trimethylolethane, erythritol, xylitol, and sorbitol.
- the carboxyl group-containing polymer contains a phosphorus element.
- the carboxyl group-containing polymer contains a residue derived from phosphorus oxoacid.
- the binder further contains a polyamine.
- the binder further contains a silane coupling agent.
- the binder further contains a polyamine and a silane coupling agent.
- the binder has a viscosity of 200 mPa ⁇ s or less at 25 ° C.
- the binder may be a fiber binder.
- the solidified body of the present disclosure includes a solidified product of the above-mentioned binder and a filler bonded by the solidified product. Further, the solidified body of the present disclosure was formed by solidifying a filler and a precursor containing a carboxyl group-containing polymer having a weight average molecular weight of 2000 to 6000 g / mol and a polyhydric alcohol in contact with the filler.
- the molar ratio of the carboxylic acid group of the carboxyl group-containing polymer in the precursor to the polyhydric alcohol is 79:21 to 35:65, and the polyhydric alcohol is described in (1) below and At least one of the conditions (2) is satisfied.
- the polyhydric alcohol contains a polyhydric alcohol having a viscosity of 900 mPa ⁇ s or less at 20 ° C.
- the polyhydric alcohol contains at least one compound selected from the group consisting of a hydrocarbon compound substituted with 2 to 10 hydroxyl groups and a polyalkylene glycol.
- the method for producing a solidified body of the present disclosure is a step of bringing a carboxyl group-containing polymer having a weight average molecular weight of 2000 to 6000 g / mol and a polyhydric alcohol into contact with a filler to obtain a precursor.
- the polyhydric alcohol comprises a step in which the molar ratio of the carboxylic acid group to the polyhydric alcohol of the carboxyl group-containing polymer in the body is 79:21 to 35:65 and a step of solidifying the precursor, wherein the polyhydric alcohol is described below. At least one of the conditions (1) and (2) is satisfied.
- the polyhydric alcohol contains a polyhydric alcohol having a viscosity of 900 mPa ⁇ s or less at 20 ° C.
- the polyhydric alcohol contains at least one compound selected from the group consisting of a hydrocarbon compound substituted with 2 to 10 hydroxyl groups and a polyalkylene glycol.
- the present disclosure it is possible to realize a sufficiently high strength and provide a binder having excellent impregnation property. Further, according to the present disclosure, it is also possible to provide a solidified body using the binder and a method for producing the solidified body.
- (meth) acrylate means “acrylate” or “methacrylate”.
- (meth) acrylic acid means "acrylate" or "methacrylate”.
- the binder according to the present embodiment is a carboxyl group-containing polymer having a weight average molecular weight of 2000 to 6000 g / mol (hereinafter, also referred to as (A) component) and a polyhydric alcohol (hereinafter, also referred to as (B) component).
- the molar ratio of the carboxylic acid group of the component (A) to the component (B) is 79:21 to 40:60, and the component (B) is described in the following (1) and (2). At least one of the conditions is satisfied.
- the polyhydric alcohol has a viscosity of 900 mPa ⁇ s or less at 20 ° C.
- the polyhydric alcohol contains at least one compound selected from the group consisting of a hydrocarbon compound substituted with 2 to 10 hydroxyl groups and a polyalkylene glycol. According to such a binder, the impregnation property to the filler can be improved, and a solidified body having excellent strength can be obtained.
- the carboxyl group-containing polymer contained in the binder of the present embodiment has a weight average molecular weight (Mw) of 2000 to 6000 g / mol.
- Mw weight average molecular weight
- the weight average molecular weight of the carboxyl group-containing polymer is preferably 2500 to 6000 g / mol, and more preferably 3000 to 6000 g / mol.
- the number average molecular weight (Mn) of the carboxyl group-containing polymer is preferably 1000 to 4000 g / mol, and more preferably 1500 to 3000 g / mol.
- the polydispersity (Mw / Mn) of the carboxyl group-containing polymer is preferably 1 to 3, and more preferably 1.4 to 2.5.
- the weight average molecular weight and the number average molecular weight of the carbosyl group-containing polymer can be measured by gel permeation chromatography (GPC), for example, under the conditions described in Examples.
- the carboxyl group-containing polymer of the present embodiment preferably contains an ethylenically unsaturated group and a structural unit derived from a monomer having a carboxyl group (hereinafter, also referred to as an unsaturated carboxylic acid-based monomer).
- the unsaturated carboxylic acid-based monomer is not particularly limited, and examples thereof include compounds represented by the following general formula (I).
- a carboxyl group includes both a carboxylic acid group (-COOH) and a salt of a carboxylic acid group.
- R 1 , R 2 and R 3 represent the same or different hydrogen atom, methyl group, or-(CH 2 ) z COOM 1 group, and-(CH 2 ) z COOM.
- One group may form an anhydride with -COOX group or another- (CH 2 ) z COMM group, z is an integer of 0 to 2, and M 1 is a hydrogen atom, an alkali metal or an alkali.
- Examples of the unsaturated carboxylic acid-based monomer represented by the general formula (1) include monocarboxylic acid-based monomers such as (meth) acrylic acid and crotonic acid or salts thereof; maleic acid, itaconic acid, and the like.
- Examples thereof include dicarboxylic acid-based monomers such as fumaric acid or salts thereof; anhydrides of dicarboxylic acid-based monomers such as maleic acid, itaconic acid and fumaric acid or salts thereof; and the like.
- Examples of the salt here include alkali metal salts, alkaline earth metal salts, ammonium salts, organic ammonium salts, organic amine salts and the like.
- Examples of the alkali metal salt include lithium salt, sodium salt, potassium salt and the like.
- Examples of the alkaline earth metal salt include calcium salt and magnesium salt.
- Examples of the organic ammonium salt include methylammonium salt, ethylammonium salt, dimethylammonium salt, diethylammonium salt, trimethylammonium salt, triethylammonium salt and the like.
- Examples of the organic amine salt include alkanolamine salts such as ethanolamine salt, diethanolamine salt and triethanolamine salt.
- the unsaturated carboxylic acid-based monomer represented by the general formula (1) is preferably (meth) acrylic acid or a salt thereof, maleic acid or a salt thereof, in that the effects of the present disclosure can be further exhibited.
- Maleic anhydride more preferably acrylic acid or a salt thereof, maleic acid or a salt thereof, still more preferably acrylic acid.
- the carboxyl group of the carboxyl group-containing polymer may be neutralized or may not be neutralized.
- 80 mol% or more may be a carboxylic acid group (that is, an unneutralized COOH group), and 90 mol% or more may be a carboxylic acid group, 95 mol. % Or more may be a carboxylic acid group.
- Neutralization of the carboxyl group-containing polymer may be carried out by adding a neutralizing agent during or after the synthesis of the carboxyl group-containing polymer, and it is preferable to add the neutralizing agent after the synthesis.
- the component (C) described later is added to the binder, it is preferable to add the neutralizing agent, the polyhydric alcohol, and the polyamine in this order to the synthesized carboxyl group-containing polymer.
- the carboxyl group-containing polymer may contain a structural unit derived from a monomer other than the unsaturated carboxylic acid-based monomer (hereinafter, also referred to as another monomer).
- examples of other monomers include monomers having an ethylenically unsaturated group and a hydroxyl group (hereinafter, also referred to as unsaturated alcohol); methyl (meth) acrylate, ethyl (meth) acrylate, and butyl (meth) acrylate.
- Alkyl (meth) acrylates such as cyclohexyl (meth) acrylate and lauryl (meth) acrylate; amino group-containing acrylates such as dimethylaminoethyl (meth) acrylate or salts thereof; (meth) acrylamide, dimethylacrylamide, isopropylacrylamide.
- Amido group-containing monomers such as; Vinyl esters such as vinyl acetate; Alkens such as ethylene and propylene; Aromatic vinyl-based monomers such as styrene; Maleimide derivatives such as maleimide, phenylmaleimide and cyclohexylmaleimide; (Meta) nitrile group-containing vinyl monomers such as acrylonitrile; sulfonic acid groups such as 3-allyloxy-2-hydroxypropanesulfonic acid, 2-acrylamide-2-methylpropanesulfonic acid, styrenesulfonic acid, vinylsulfonic acid and the like.
- Monomers having Alkyl vinyl ethers such as vinyl ether, ethyl vinyl ether and butyl vinyl ether; vinyl chloride, vinylidene chloride, allyl alcohol: other functional group-containing monomers such as vinylpyrrolidone and the like can be mentioned.
- vinyl ether ethyl vinyl ether and butyl vinyl ether
- vinyl chloride vinylidene chloride
- allyl alcohol other functional group-containing monomers such as vinylpyrrolidone and the like can be mentioned.
- One of these may be used alone, or two or more thereof may be used in combination.
- Examples of the monomer having an ethylenically unsaturated group and a hydroxyl group include allyl alcohol, ⁇ -metharyl alcohol, isoprenol, 3-methyl-3-butene-1-ol, 3-methyl-2-buten-1-ol, and the like.
- Examples thereof include unsaturated alcohols such as 2-methyl-3-butene-2-ol and compounds represented by the following general formula (2).
- R 4 represents a hydrogen atom or a methyl group
- R 5 represents an organic group having 2 to 20 carbon atoms.
- R5 in the above general formula ( 2 ) include -CH 2 CH 2 -group, -CH (CH 3 ) CH 2 -group, -CH 2 CH (CH 3 ) -group, and -C (CH).
- allylene group -CH 2 CH 2 OCH 2 CH 2 -group, -CH 2 CH 2 OCH 2 CH 2 OCH 2 CH 2 -group, -CH 2 CH 2 OCH 2 CH 2 OCH 2 CH 2 OCH 2 CH 2 -group, -CH (CH 3 ) CH 2 OCH (CH 3 ) CH 2 -group, -CH (CH 3 ) CH 2 OCH (CH 3 ) CH 2 -Ether groups such as groups; etc. are exemplified.
- the content of the structural unit derived from the unsaturated alcohol in the carboxyl group-containing polymer is preferably 15 mol% or less, preferably 10 mol% or less, based on 100 mol% of the total structural units contained in the carboxyl group-containing polymer. It is more preferable to have it, and it is further preferable to have it in an amount of 5 mol% or less.
- the carboxyl group-containing polymer does not have to contain structural units derived from unsaturated alcohols.
- the content of the structural unit derived from the unsaturated carboxylic acid-based monomer in the carboxyl group-containing polymer is preferably 85 mol% or more with respect to 100 mol% of the total structural units contained in the carboxyl group-containing polymer. It is more preferably 90 mol% or more, and further preferably 95 mol% or more.
- the carboxyl group-containing polymer may not contain structural units other than the structural units derived from the unsaturated carboxylic acid-based monomer.
- the carboxyl group-containing polymer of the present embodiment may be a homopolymer containing only structural units derived from one kind of monomer, but a copolymer containing only structural units derived from two or more kinds of monomers. It may be coalesced. When it is a copolymer, the carboxyl group-containing polymer may be a random copolymer or a block copolymer.
- the structural unit derived from the unsaturated carboxylic acid-based monomer and the structural unit derived from the other monomer are formed by radical polymerization of the unsaturated carboxylic acid-based monomer and the other monomer, respectively. Although it is a structural unit, even if it is not actually formed by radical polymerization of a monomer, it is formed by another method as long as it has the same chemical structure as the structural unit formed by radical polymerization. There may be.
- the carboxyl group-containing polymer of the present embodiment may contain a phosphorus element.
- the phosphorus element may be derived from a phosphorus-containing compound used, for example, as a chain transfer agent in synthesizing a carboxyl group-containing polymer. That is, in this case, the phosphorus element is contained in the residue of the phosphorus-containing compound bonded to the carboxyl group-containing polymer.
- the carboxyl group-containing polymer contains a phosphorus element, the curing reaction of the binder is promoted, which is preferable.
- Examples of the phosphorus-containing compound include phosphorous oxo such as hypophosphite (salt), phosphite (salt), phosphoric acid (salt), pyrophosphate (salt), polyphosphoric acid (salt), and organic phosphoric acid (salt).
- Examples include acids and salts.
- the content of the phosphorus element in the carboxyl group-containing polymer is preferably 0 to 20% by mass, more preferably 0.1 to 15% by mass, in terms of the phosphorus-containing compound, based on 100% by mass of the component (A). It is preferably 0.5 to 10% by mass, and more preferably 0.5 to 10% by mass.
- the phosphorus-containing compound contained as a residue in the carboxyl group-containing polymer may be one or more.
- the content of the component (A) in the binder of the present embodiment is preferably 10 to 90% by mass, preferably 20 to 80% by mass, based on 100% by mass of the total amount of the binder.
- the polymer of the present embodiment can be obtained by polymerizing the above-mentioned unsaturated carboxylic acid-based monomer and other monomers by a conventionally known method.
- a polymerization initiator sodium persulfate is preferable.
- the chain transfer agent the above-mentioned phosphorus oxoacid or salt, sodium sulfate and the like are preferable.
- polyhydric alcohol satisfies at least one of the following conditions (1) and (2).
- the polyhydric alcohol may satisfy both the following conditions (1) and (2).
- (2) Selected from the group consisting of a hydrocarbon compound substituted with 2 to 10 hydroxyl groups (hereinafter, also referred to as (B1) component) and polyalkylene glycol (hereinafter, also referred to as (B2) component). Contains at least one compound.
- the polyhydric alcohol mainly functions as a cross-linking agent for cross-linking the carboxyl group-containing polymer in the curing reaction of the binder.
- the viscosity of the polyhydric alcohol at 20 ° C. is preferably 500 mPa ⁇ s or less, more preferably 250 mPa ⁇ s or less, further preferably 100 mPa ⁇ s or less, and particularly preferably 50 mPa ⁇ s or less.
- the viscosity of the polyhydric alcohol is the viscosity of each polyhydric alcohol as a pure substance (that is, as a liquid which is a single component system).
- polyhydric alcohol having such a viscosity examples include ethylene glycol (20 mPa ⁇ s), diethylene glycol (36 mPa ⁇ s), 1,2-propanediol (56 mPa ⁇ s), and 1,4-butanediol (98 mPa ⁇ s).
- Tetraethylene glycol 55 mPa ⁇ s
- 1,2-pentanediol 180 mPa ⁇ s (20 ° C
- 2-methyl-2,4-pentadiol 34 mPa ⁇ s
- Dihydric alcohols such as diol (173 mPa ⁇ s) can be mentioned (the values in parentheses are the viscosities of each compound at 20 ° C.).
- the viscosities should be measured using, for example, a B-type viscometer. Can be done.
- the component (B1) is a compound obtained by substituting 2 to 10 hydrogen atoms of a hydrocarbon compound with a hydroxyl group.
- the term obtained by substitution in the present specification is a term formally indicating a chemical structure, and does not mean only a compound actually obtained by substituting a hydrogen atom and a hydroxyl group. Therefore, if the compound has a chemical structure obtained by substituting 2 to 10 hydrogen atoms of a hydrocarbon compound with a hydroxyl group, the compound is obtained by a chemical reaction other than directly substituting the hydrogen atom and the hydroxyl group. It may be a natural product or it may be a natural product.
- the number of hydroxyl groups contained in the component (B1) may be 2 to 8, may be 2 to 5, and may be 2 or 3.
- the component (B1) may have 2 to 20 carbon atoms, may have 2 to 10 carbon atoms, and may have 2 to 5 carbon atoms.
- the above-mentioned hydrocarbon compound may be an aliphatic hydrocarbon compound or an aromatic hydrocarbon compound.
- the aliphatic hydrocarbon compound may be a saturated hydrocarbon compound or an unsaturated hydrocarbon compound, but is preferably a saturated hydrocarbon compound.
- the aliphatic hydrocarbon compound may be a chain-like aliphatic hydrocarbon compound, or may be an aliphatic hydrocarbon compound containing a cyclic structure.
- alkanes such as ethylene glycol, propylene glycol, 1,3-propanediol, 1,3-butylene glycol, 1,4-butanediol, 1,5-pentanediol, and 1,6-hexanediol.
- Diol examples thereof include trihydric or higher alcohols such as glycerin, trimethylolpropane, trimethylolethane, erythritol, xylitol, and sorbitol.
- Examples of the component (B2) include compounds represented by the following general formula (3).
- a 1 is a divalent hydrocarbon group having 2 to 5 carbon atoms, n is 2 to 20, and only one A 1 is contained in one molecule. However, it may be two or more types.
- examples of the divalent hydrocarbon group include an ethylene group, a 1,3-propylene group, a 1,2-propyl group, a 1,4-butylene group, a 1,3, -butylene group and the like. It may contain one kind or two or more kinds.
- n may be an average value (that is, a rational number) based on the number of molecules over the entire (B2) component, but may be an integer.
- n is preferably 2 to 10, and may be 2 to 5.
- Examples of the (B2) component include polyalkylene glycols such as diethylene glycol, triethylene glycol, and tetraethylene glycol.
- the molecular weight of the polyhydric alcohol is preferably 1000 g / mol or less, more preferably 500 g / mol or less, still more preferably 200 g / mol or less, from the viewpoint of further enhancing the impregnation property of the binder.
- the molar ratio of the carboxylic acid group of the component (A) to the component (B) (the carboxylic acid group of the component (A)).
- the molar amount of (B) component) is 79:21 to 35:65, preferably 75:25 to 40:60, and more preferably 70:30 to 40:60.
- the content of the component (B) in the binder of the present embodiment is preferably 5 to 60% by mass, more preferably 7 to 50% by mass, based on 100% by mass of the total amount of the binder.
- the binder of the present embodiment may contain components other than the component (A) and the component (B).
- the binder may further contain at least one of a polyamine (hereinafter, also referred to as a component (C)) and a silane coupling agent (hereinafter, also referred to as a component D).
- the polyamine there is no particular problem as long as it is a compound having two or more amino groups in the molecule, but it is preferable that the polyamine is an amine compound having 4 or more nitrogen atoms per molecule.
- the polyamine (C) include polyalkylene polyamines, polyamide polyamines, polyalkyleneimine alkylene oxides, polyvinylamines and the like, and polyalkylene polyamines are preferable.
- the polyalkylene polyamine include a polymer or a copolymer (that is, polyalkyleneimine) having one or more kinds of alkyleneimines as a monomer, an alkyleneimine adduct of an aliphatic polyvalent amine, and the like.
- the polyalkyleneimine is preferably a polymer or copolymer of an alkyleneimine having 2 to 8 carbon atoms (more preferably 2 to 6), and is preferably ethyleneimine, propyleneimine, 1,2-butyleneimine, 2
- a polymer or copolymer of one or more alkyleneimines selected from the group consisting of, 3-butyleneimine and 1,1-dimethylethyleneimine is more preferable, and a polymer of ethyleneimine (polyethyleneimine). ) Is more preferable.
- alkyleneimine adduct of the aliphatic polyvalent amine it is preferable that alkyleneimine is added (ring-opened addition) to 2 to 6 alkylenediamines (for example, ethylenediamine).
- alkyleneimine of the adduct those exemplified as the monomer of polyalkyleneimine are preferable.
- the polyalkyleneimine and the additive may not be produced by directly subjecting the alkyleneimine to an addition reaction, but may have the same chemical structure as the polyalkyleneimine and the additive. It may be synthesized by another chemical reaction.
- the number average molecular weight of the polyamine may be 200 to 500,000 g / mol, 250 to 100,000 g / mol, 250 to 80,000 g / mol, 300 to 50,000 g / mol, and 400 to 10,000 g. It may be / mol and may be 500 to 5000 g / mol. Only one type of polyamine may be used, or two or more types may be used in combination.
- the polyamine (C) preferably does not contain a hydroxyl group.
- the content of the component (C) in the binder is preferably 0.01 to 5 parts by mass, preferably 0.1 to 3 parts by mass with respect to 100 parts by mass of the total amount of the components (A) and (B). It is more preferable to have it.
- the component (D) acts at the interface between the filler and the binder, and the impregnation property of the binder and the strength of the obtained solidified body tend to be enhanced.
- the silane coupling agent include aminosilane coupling agents such as ⁇ -aminopropyltriethoxysilane, ⁇ - (2-aminoethyl) aminopropyltrimethoxysilane, and ⁇ - (2-aminoethyl) aminopropylmethyldimethoxysilane, and ⁇ .
- -Epoxysilane coupling agents such as glycidoxypropyltrimethoxysilane and ⁇ -glycidoxypropylmethyldimethoxysilane can be mentioned. These can be used alone or in combination of two or more.
- the content of the silane coupling agent in the binder is preferably 0.01 to 5 parts by mass, preferably 0.1 to 3 parts by mass with respect to 100 parts by mass of the total amount of the components (A) and (B). It is more preferable to have it.
- the binder may further contain a free phosphorus-containing compound.
- the phosphorus compound is preferable because it is considered to have an effect of promoting the cross-linking of the component (A).
- the free phosphorus-containing compound include phosphorus such as hypophosphoric acid (salt), phosphoric acid (salt), phosphoric acid (salt), pyrophosphoric acid (salt), polyphosphoric acid (salt), and organic phosphoric acid (salt).
- Oxoacids, or salts or esters thereof (including hydrates thereof); organic phosphorus compounds such as trimethylphosphine, triphenylphosphine, triphenylphosphine oxide; and the like are exemplified.
- the binder contains a phosphorus-containing compound
- one of these may be contained, or two or more of them may be contained.
- the salt include the above.
- the content of the phosphorus-containing compound in the binder is preferably 20% by mass or less, more preferably 0.1 to 10% by mass, still more preferably 0.5 to 7% by mass with respect to 100% by mass of the component (A). Can be.
- the content of the phosphorus-containing compound includes the content of the phosphorus element contained in the component (A) (converted to the free phosphorus-containing compound) and the content of the free phosphorus-containing compound. It may be the total amount of the amount.
- the binder may further contain a curing accelerator other than the phosphorus-containing compound.
- a curing accelerator include protonic acids (sulfuric acid, carboxylic acid, carbonic acid, etc.) and salts thereof (metals (alkali metals, alkaline earth metals, transition metals, 2B group, 4A group, 4B group, 5B). (Group, etc.) Salts, ammonium salts, etc.), metals (above), oxides, chlorides, hydroxides, alkoxides, etc. may be mentioned. Only one kind of these may be used, or two or more kinds may be used.
- the binder may contain a solvent.
- the solvent may be an organic solvent, but water is preferable. That is, the binder may be an aqueous solution.
- the content of water in the binder (aqueous solution) is preferably 10 to 80% by mass, more preferably 20 to 70% by mass, and 25 to 60% by mass with respect to 100% by mass of the total amount of the binder. It is more preferable to have it.
- the binder may be in a form that does not contain water or contains only a small amount.
- the content of water in the binder may be less than 10% by mass, 5% by mass or less, or 1% by mass or less with respect to 100% by mass of the total amount of the binder.
- Such a binder may be used as it is depending on the intended use, or may be used after being diluted by adding a solvent such as water at the time of use.
- the binder may further contain additives such as a rust preventive, a colorant, a dustproof agent such as a heavy oil water dispersion, and an inorganic sulfate (neutralizer).
- the inorganic sulfate has a function of neutralizing an alkaline component eluted from an inorganic fiber such as glass, and examples thereof include ammonium sulfate.
- the content of the component (A) and the component (B) in the binder may be 90% by mass or more, or 95% or more, based on 100% by mass of the total amount of the binder excluding the solvent.
- the viscosity of the binder is preferably 200 mPa ⁇ s or less, more preferably 180 mPa ⁇ s or less, further preferably 160 mPa ⁇ s or less, and 120 mPa ⁇ s or less at 25 ° C. It is even more preferable, and it is particularly preferable that it is 100 mPa ⁇ s or less.
- the viscosity of the binder can be appropriately adjusted by adjusting the blending ratio of the component (A) and the component (B) and the content of water. The viscosity can be measured using, for example, a B-type viscometer.
- the pH of the binder is preferably 1 to 4.0, more preferably 1.5 to 3.7 or less, and even more preferably 2 to 3.5.
- the binder of the present embodiment can be suitably used for bonding the filler (bonded material).
- the filler is not particularly limited, and may be an inorganic filler or an organic filler.
- the shape of the filler is not particularly limited, and the filler can be used in any shape such as fibrous or particulate.
- the fibrous filler may be either a woven fabric or a non-woven fabric. Since the binder of the present embodiment is excellent in impregnation property, it is useful as a binder for fibers, and is particularly useful when used for a non-woven fabric.
- the inorganic filler examples include inorganic fibers such as glass fiber, rock wool, and carbon fiber (either woven fabric or non-woven fabric is preferable, and non-woven fabric is preferable); powdered glass, glass particles (glass beads), mineral particles, and the like. Inorganic particles (inorganic powder) and the like can be mentioned. Among these, glass fiber or powdered glass is preferable because the solidified body can be widely applied as a heat insulating material or the like. The binder of this embodiment is particularly useful when binding glass nonwoven fibers (eg, glass wool).
- organic filler examples include organic fibers such as wool, cellulose, hemp, nylon and polyester; organic particles such as nylon fine particles and polyester fine particles (organic powder).
- the solidified body of the present embodiment includes a solidified product of the binder and a filler bonded by the solidified product. That is, it can be said that the solidified body of the present embodiment is a composite material containing the solidified body of the binder and the filler.
- the method for producing the solidified body is not particularly limited, but is not particularly limited as long as it includes a step of bringing the component (A) and the component (B) into contact with the filler to solidify the obtained precursor. do not have.
- the component (A) and the component (B) are mixed in advance with other components at a predetermined molar ratio to prepare a binder, and the binder and the filler are brought into contact with each other (for example, the filler).
- the precursor may be prepared by impregnating with or mixing with a filler, but it is not necessary to provide a step of preparing a binder in advance.
- the precursor is mixed or impregnated by adding the component (A) and the component (B) and other components collectively or sequentially to the filler as needed. You may make a body.
- the precursor may be formed into a desired shape prior to the solidification step described below.
- the content of the binder in the precursor is preferably 1 to 40 parts by mass, more preferably 1 to 30 parts by mass, and 1 to 15 parts by mass with respect to 100 parts by mass of the filler. It is more preferably a part.
- the amount of the binder adhered is within the above range, the mechanical strength of the solidified body to be produced tends to be improved.
- the precursor After producing the precursor, the precursor is solidified as a whole by solidifying the binder contained in the precursor.
- the method of solidifying the precursor include a method of heating the precursor (heating step).
- the heating temperature and heating time in the heating step can be, for example, 100 to 300 ° C. and 1 to 120 minutes, but from the viewpoint of operability, it is preferably performed at a low temperature for a short time.
- the heating temperature is preferably 120 to 250 ° C, more preferably 140 to 230 ° C, and even more preferably 150 to 200 ° C.
- the heating time is preferably 1 to 60 minutes, more preferably 1 to 45 minutes, and even more preferably 1 to 30 minutes.
- the binder of the present embodiment tends to have low-temperature curing property and quick-curing property, which is advantageous from the viewpoint of energy saving and shortening of curing time during the curing reaction.
- the complete curing temperature can be used as an index of the low temperature curing property and the fast curing property of the binder.
- the complete curing temperature of the binder is preferably 195 ° C. or lower, more preferably 185 ° C. or lower, further preferably 180 ° C. or lower, further preferably 175 ° C. or lower, and 165 ° C. or lower. It is particularly preferable to have it.
- the complete curing temperature of the binder can be measured from 30 ° C. to 250 ° C. at a heating rate of 4 ° C./min using a dynamic viscoelasticity measuring device, and can be set to a temperature at which the storage elastic modulus becomes constant.
- carboxyl group-containing polymers having various weight average molecular weights were prepared as described below.
- the weight average molecular weight and solid content of the component (A) were measured under the following conditions.
- 80% AA 80 mass% acrylic acid aqueous solution
- the obtained polymer is also referred to as PAA3000.
- 80% AA 80 mass% acrylic acid aqueous solution
- the obtained polymer is also referred to as PAA4000.
- 80% AA 80 mass% acrylic acid aqueous solution
- the obtained polymer is also referred to as PAA6000.
- 80% AA 80 mass% acrylic acid aqueous solution
- the solid content of the aqueous solution (PAA8000) obtained by adding 269.9 g of pure water to the reaction solution was 51.5%, the number average molecular weight was 3570, and the weight average molecular weight was 8070 (multidispersity). : 2.26).
- PAA8000 the obtained polymer is also referred to as PAA8000.
- 80% AA 80 mass% acrylic acid aqueous solution
- the obtained polymer is also referred to as PAA30000.
- (A) Carboxyl group-containing polymer, (B) polyhydric alcohol, (C) polyamine, and (D) silane coupling agent were blended in the blending ratios shown in Tables 1 to 3, and compared with Examples 1 to 20.
- the binders of Examples 1 to 11 were produced. As shown below, various performance evaluations were performed on each of the obtained binders by adding an appropriate amount of water. The results are shown in Tables 1 to 3.
- the viscosity of the component (B) polyhydric alcohol at 20 ° C. is as follows. Ethylene glycol: 20 mPa ⁇ s Diethylene glycol: 36 mPa ⁇ s Tetraethylene glycol: 55 mPa ⁇ s 1,4-Butanediol: 98mPa ⁇ s Diethanolamine: 1000 mPa ⁇ s Triethanolamine: 1013 mPa ⁇ s
- the content of the component (A) is the amount (mol) of the structural unit derived from acrylic acid, and the unit of the content of the component (B) is mol.
- the test piece for measuring the mechanical strength was prepared as follows.
- the mixture obtained in (ii) is pushed into a mold of 120 mm ⁇ 20 mm ⁇ 5 mm that has been mold-released, molded, dried in an oven at 210 ° C. for 30 minutes, and then cooled at room temperature for 30 minutes for testing. I got a piece.
- ⁇ Evaluation method for impregnation of glass beads 30 g of glass beads having a particle size of 0.50 to 0.150 mm were spread on a charley having a diameter of 120 mm so as to have a uniform height, and 3 g of the above-mentioned aqueous binder solution was slowly dropped onto the center of the charley. The spread area of the binder on the glass beads 10 seconds after the completion of the dropping was calculated. Areas were classified and impregnation properties were evaluated according to the following criteria. A: 25 cm 2 or more B: 20 cm 2 or more and less than 25 cm 2 C: 20 cm less than 2
- DMA dynamic viscoelasticity measuring device
- ⁇ Viscosity measurement method> At 25 ° C., the viscosity of the binder aqueous solution diluted to 50% by adding pure water to the binder was measured at a rotation speed of 30 rpm using a B-type viscometer (manufactured by Tokyo Keiki Co., Ltd.). The spindle used was appropriate according to the range of viscosity to be measured. The results are shown in Tables 1 to 3.
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Abstract
Description
(1)上記多価アルコールが、20℃において900mPa・s以下の粘度を有する多価アルコールを含む。
(2)上記多価アルコールが、2~10個の水酸基で置換された炭化水素化合物、及びポリアルキレングリコールからなる群から選択される少なくとも一種の化合物を含む。
(1)上記多価アルコールが、20℃において900mPa・s以下の粘度を有する多価アルコールを含む。
(2)上記多価アルコールが、2~10個の水酸基で置換された炭化水素化合物、及びポリアルキレングリコールからなる群から選択される少なくとも一種の化合物を含む。
(1)上記多価アルコールが、20℃において900mPa・s以下の粘度を有する。
(2)上記多価アルコールが、2~10個の水酸基で置換された炭化水素化合物、及びポリアルキレングリコールからなる群から選択される少なくとも一種の化合物を含む。
このような結合剤によれば、充填材に対する含浸性を改善でき、強度に優れる固化体を得ることができる。
本実施形態の結合剤に含まれるカルボキシル基含有重合体は、2000~6000g/molの重量平均分子量(Mw)を有する。このようなカルボキシル基含有重合体を含むことにより、含浸性に優れる結合剤を得ることができる。カルボキシル基含有重合体の重量平均分子量は、2500~6000g/molであると好ましく、3000~6000g/molであるとより好ましい。
また、カルボキシル基含有重合体の数平均分子量(Mn)は、1000~4000g/molであると好ましく、1500~3000g/molであるとより好ましい。カルボキシル基含有重合体の多分散度(Mw/Mn)は、1~3であると好ましく、1.4~2.5であるとより好ましい。
カルボシキル基含有重合体の重量平均分子量及び数平均分子量は、例えば、実施例に記載の条件で、ゲルパーミエイションクロマトグラフィー(GPC)により測定することができる。
カルボキシル基含有重合体の中和は、カルボキシル基含有重合体の合成中又は合成後に中和剤を添加することにより行ってもよく、合成後に中和剤を添加することが好ましい。後述の(C)成分を結合剤に添加する場合、合成したカルボキシル基含有重合体に、中和剤、(B)多価アルコール、(C)ポリアミンの順に添加することが好ましい。
本実施形態の多価アルコールは、以下の(1)及び(2)の少なくとも一方の条件を満たす。多価アルコールは、以下の(1)及び(2)の両方の条件を満たしていてもよい。
(1)20℃において900mPa・s以下の粘度を有する。
(2)2~10個の水酸基で置換された炭化水素化合物(以下、(B1)成分とも言う。)、及びポリアルキレングリコール(以下、(B2)成分とも言う。)からなる群から選択される少なくとも一種の化合物を含む。多価アルコールは、主として結合剤の硬化反応においてカルボキシル基含有重合体を架橋する架橋剤として機能する。
本実施形態の結合剤は、(A)成分及び(B)成分以外の成分を含んでいてもよい。例えば、結合剤は、更にポリアミン(以下、(C)成分とも言う)及びシランカップリング剤(以下、(D成分とも言う))の少なくとも一方を含んでいてもよい。
本実施形態の結合剤は、充填材(被結合材)の結合に好適に用いることができる。充填材としては特に制限はなく、無機充填材であってもよく、有機充填材であってもよい。また、充填材の形状にも特に制限はなく、繊維状、粒子状等、いずれの形状の充填材にも用いることができる。繊維状の充填材としては、織布及び不織布のいずれであってもよい。本実施形態の結合剤は、含浸性に優れるため、繊維用の結合剤として有用であり、特に不織布に使用した場合に特に有用である。
本実施形態の固化体は、上記結合剤の固化物と、当該固化物により結合された充填材とを含む。すなわち、本実施形態の固化体は、結合剤の固化物と、充填材とを含む複合材であるということもできる。
固化体を製造する方法としては、特に制限はないが、上記(A)成分と(B)成分とを充填材に接触させて得られた前駆体を固化させる工程を含んでいれば特に制限はない。(A)成分及び(B)成分は、予め所定のモル比で、必要に応じてその他の成分と混合して結合剤を調製し、当該結合剤と充填材とを接触させる(例えば、充填材に含浸させる、又は充填材と混合する)ことにより前駆体を作製してもよいが、予め結合剤を調製する工程を設けなくてもよい。結合剤を調製する工程を設けない場合、例えば、充填材に(A)成分及び(B)成分、並びに必要に応じてその他の成分を一括して又は逐次添加して混合又は含浸させることにより前駆体を作製してよい。前駆体は、後述の固化させる工程の前に所望の形状に成形されてもよい。
結合剤の完全硬化温度は、動的粘弾性測定装置を用いて30℃から250℃まで昇温速度4℃/分で測定を行い、貯蔵弾性率が一定となる温度とすることができる。
重量平均分子量(Mw)は、下記条件にて測定した。
装置:東ソー製 HLC-8320GPC
検出器:RI
カラム:東ソー製 TSK-GEL G3000PWXL
カラム温度:35℃
流速:0.5ml/min
検量線:創和科学社製 POLY SODIUM ACRYLATE STANDARD
溶離液:リン酸二水素ナトリウム12水和物/リン酸水素二ナトリウム2水和物(34.5g/46.2g)の混合物を純水にて5000gに希釈した溶液。
130℃に加熱したオーブンで重合体水溶液を60分間放置して乾燥処理した。乾燥前後の重量変化から、重合完結後の重合体水溶液の固形分(%)を算出した。
還流冷却機、攪拌機(パドル翼)、温度計を備えた容量2.5リットルのSUS製セパラブルフラスコに、純水316.3gを仕込み(初期仕込)、攪拌下、沸点まで昇温した。次いで攪拌下、沸点還流状態の重合反応系中に80質量%アクリル酸水溶液(以下「80%AA」と称する)900.0g(すなわち10.0mol)を180分間、15質量%過硫酸ナトリウム水溶液(以下「15%NaPS」と称する)71.0gを195分間、45質量%次亜リン酸ナトリウム水溶液(以下「45%SHP」と称する)25.7gを18分間と更に続いて101.7gを162分間と2段階の供給速度で、それぞれ別々の供給経路を通じて先端ノズルより滴下した。それぞれの成分の滴下は、45%SHP以外は一定の滴下速度で連続的に行った。80%AAの滴下終了後、さらに30分間に渡って反応溶液を沸点還流状態に保持(熟成)して重合を完結せしめた。重合の完結後、反応溶液に純水417.8gを投入して得られた水溶液の固形分は44.3%、数平均分子量は1920、重量平均分子量は3080だった(多分散度:1.60)。以下、得られた重合体をPAA3000とも呼ぶ。
還流冷却機、攪拌機(パドル翼)、温度計を備えた容量2.5リットルのSUS製セパラブルフラスコに、純水329.0gを仕込み(初期仕込)、攪拌下、沸点まで昇温した。次いで攪拌下、沸点還流状態の重合反応系中に80質量%アクリル酸水溶液(以下「80%AA」と称する)900.0g(すなわち10.0mol)を180分間、15質量%過硫酸ナトリウム水溶液(以下「15%NaPS」と称する)59.2gを195分間、45質量%次亜リン酸ナトリウム水溶液(以下「45%SHP」と称する)21.4gを18分間と更に続いて84.8gを162分間と2段階の供給速度で、それぞれ別々の供給経路を通じて先端ノズルより滴下した。それぞれの成分の滴下は、45%SHP以外は一定の滴下速度で連続的に行った。80%AAの滴下終了後、さらに30分間に渡って反応溶液を沸点還流状態に保持(熟成)して重合を完結せしめた。重合の完結後、反応溶液に純水411.8gを投入して得られた水溶液の固形分は44.7%、数平均分子量は2260、重量平均分子量は4080だった(多分散度:1.81)。以下、得られた重合体をPAA4000とも呼ぶ。
還流冷却機、攪拌機(パドル翼)、温度計を備えた容量2.5リットルのSUS製セパラブルフラスコに、純水437.4gを仕込み(初期仕込)、攪拌下、沸点まで昇温した。次いで攪拌下、沸点還流状態の重合反応系中に80質量%アクリル酸水溶液(以下「80%AA」と称する)1560.0g(すなわち17.3mol)を180分間、15質量%過硫酸ナトリウム水溶液(以下「15%NaPS」と称する)55.0gを195分間、45質量%次亜リン酸ナトリウム水溶液(以下「45%SHP」と称する)26.9gを18分間と更に続いて107.7gを162分間と2段階の供給速度で、それぞれ別々の供給経路を通じて先端ノズルより滴下した。それぞれの成分の滴下は、45%SHP以外は一定の滴下速度で連続的に行った。80%AAの滴下終了後、さらに30分間に渡って反応溶液を沸点還流状態に保持(熟成)して重合を完結せしめた。重合の完結後、反応溶液に純水207.2gを投入して得られた水溶液の固形分は56.3%、数平均分子量は2890、重量平均分子量は5980だった(多分散度:2.07)。以下、得られた重合体をPAA6000とも呼ぶ。
還流冷却機、攪拌機(パドル翼)、温度計を備えた容量2.5リットルのSUS製セパラブルフラスコに、純水401.8gを仕込み(初期仕込)、攪拌下、沸点まで昇温した。次いで攪拌下、沸点還流状態の重合反応系中に80質量%アクリル酸水溶液(以下「80%AA」と称する)1200.0g(すなわち13.3mol)を180分間、15質量%過硫酸ナトリウム水溶液(以下「15%NaPS」と称する)42.3gを195分間、45質量%次亜リン酸ナトリウム水溶液(以下「45%SHP」と称する)15.9gを18分間と更に続いて63.8gを162分間と2段階の供給速度で、それぞれ別々の供給経路を通じて先端ノズルより滴下した。それぞれの成分の滴下は、45%SHP以外は一定の滴下速度で連続的に行った。80%AAの滴下終了後、さらに30分間に渡って反応溶液を沸点還流状態に保持(熟成)して重合を完結せしめた。重合の完結後、反応溶液に純水269.9gを投入して得られた水溶液(PAA8000)の固形分は51.5%、数平均分子量は3570、重量平均分子量は8070だった(多分散度:2.26)。以下、得られた重合体をPAA8000とも呼ぶ。
還流冷却機、攪拌機(パドル翼)、温度計を備えた容量2.5リットルのSUS製セパラブルフラスコに、純水400.0gを仕込み(初期仕込)、攪拌下、沸点まで昇温した。次いで攪拌下、沸点還流状態の重合反応系中に80質量%アクリル酸水溶液(以下「80%AA」と称する)1051.8g(すなわち11.7mol)を180分間、15質量%過硫酸ナトリウム水溶液(以下「15%NaPS」と称する)35.4gを195分間、45質量%次亜リン酸ナトリウム水溶液(以下「45%SHP」と称する)5.5gを18分間と更に続いて22.0gを162分間と2段階の供給速度で、それぞれ別々の供給経路を通じて先端ノズルより滴下した。それぞれの成分の滴下は、45%SHP以外は一定の滴下速度で連続的に行った。80%AAの滴下終了後、さらに30分間に渡って反応溶液を沸点還流状態に保持(熟成)して重合を完結せしめた。重合の完結後、反応溶液に純水165.8gを投入して得られた水溶液の固形分は52.4%、数平均分子量は7410、重量平均分子量は29290だった(多分散度:3.95)。以下、得られた重合体をPAA30000とも呼ぶ。
エチレングリコール:20mPa・s
ジエチレングリコール:36mPa・s
テトラエチレングリコール:55mPa・s
1,4-ブタンジオール:98mPa・s
ジエタノールアミン:1000mPa・s
トリエタノールアミン:1013mPa・s
なお、表1~3中、(A)成分の含有量は、アクリル酸に由来する構造単位の量(mol)であり、(B)成分の含有量の単位はmolである。
<(C)成分:ポリアミン>
PEI (1):ポリエチレンイミン(商品名:エポミン(登録商標) SP-006、株式会社日本触媒製、数平均分子量600(沸点上昇法で測定))
PEI (2):ポリエチレンイミン(商品名:エポミン(登録商標) P-1000、株式会社日本触媒製、数平均分子量70000(粘度法により測定))
<(D)成分:シランカップリング剤>
シランI :γ‐グリシドキシプロピルトリメトキシシラン(信越化学工業株式会社製)
アミノシラン:γ‐(2‐アミノエチル)アミノプロピルトリメトキシシラン(東京化成工業株式会社製)
なお、表1~3中、(C)成分の含有量及び(D)成分の含有量は、(A)成分及び(B)成分の含有量の合計100質量部に対する質量部である。
機械強度測定用の試験片は以下のようにして作製した。
(i)結合剤に純水を添加し、結合剤が35質量%となるように希釈して結合剤水溶液を調製した。
(ii)粒径0.50~0.150mmのガラスビーズに、(i)で得られた結合剤水溶液を、結合剤水溶液がガラスビーズの質量の5.0%となるように添加し、十分に混合し、混合物を得た。
(iii)離型処理した120mm×20mm×5mmの型枠に(ii)で得られた混合物を押し入れて成型し、210℃のオーブンで30分間乾燥後、室温下で30分冷却することで試験片を得た。
上記試験片について、JISK7171に準じ、2mm/minの試験速度で曲げ強さを測定した。試験片3枚の曲げ強さを測定し、平均値を算出した。
直径120mmのシャーレーに粒径0.50~0.150mmのガラスビーズ30gを高さが均一になるように敷き詰め、そこに上記結合剤水溶液3gをシャーレーの中心部にゆっくり滴下した。滴下完了後、経過時間10秒後のガラスビーズ上の結合剤の広がり面積を算出した。以下の基準で、面積を分類し、含浸性を評価した。
A:25cm2以上
B:20cm2以上25cm2未満
C:20cm2未満
動的粘弾性測定装置(DMA)を用い、30℃から250℃まで昇温速度4℃/分で測定を行い、貯蔵弾性率が一定となる温度を完全硬化温度とした。
25℃において、結合剤に純水を添加して50%に希釈して得られた結合剤水溶液について、pHメータ(HORIBA製 商品名「D-51」)を用いてpH値を測定した。結果を表1~3に示す。
25℃において、結合剤に、純水を添加して50%に希釈した結合剤水溶液について、B型粘度計(東京計器株式会社製)を用いて30rpmの回転数にて粘度を測定した。使用したスピンドルは、測定される粘度の範囲に応じて適切なものを使用した。結果を表1~3に示す。
Claims (14)
- 2000~6000g/molの重量平均分子量を有するカルボキシル基含有重合体と、
多価アルコールと、を含み、
前記カルボキシル基含有重合体のカルボン酸基と、前記多価アルコールとのモル比が79:21~35:65であり、
前記多価アルコールが、20℃において900mPa・s以下の粘度を有する多価アルコールを含む、結合剤。 - 前記多価アルコールが、2~10個の水酸基で置換された炭化水素化合物、及びポリアルキレングリコールからなる群から選択される少なくとも一種の化合物を含む、請求項1に記載の結合剤。
- 2000~6000g/molの重量平均分子量を有するカルボキシル基含有重合体と、
多価アルコールと、を含み、
前記カルボキシル基含有重合体のカルボン酸基と、前記多価アルコールとのモル比が79:21~35:65であり、
前記多価アルコールが、2~10個の水酸基で置換された炭化水素化合物、及びポリアルキレングリコールからなる群から選択される少なくとも一種の化合物を含む、結合剤。 - 前記水酸基で置換された炭化水素化合物が、エチレングリコール、プロピレングリコール、1,3-プロパンジオール、1,3-ブチレングリコール、1,4-ブタンジオール、1,5-ペンタンジオール、1,6-ヘキサンジオール、グリセリン、トリメチロールプロパン、トリメチロールエタン、エリトリトール、キシリトール及びソルビトールからなる群から選択される少なくとも一つである、請求項3に記載の結合剤。
- 前記カルボキシル基含有重合体がリン元素を含む、請求項1~4のいずれか一項に記載の結合剤。
- 前記カルボキシル基含有重合体がリンのオキソ酸に由来する残基を含む、請求項5に記載の結合剤。
- ポリアミンを更に含む、請求項1~6のいずれか一項に記載の結合剤。
- シランカップリング剤を更に含む、請求項1~7のいずれか一項に記載の結合剤。
- ポリアミン及びシランカップリング剤を更に含む、請求項1~6のいずれか一項に記載の結合剤。
- 25℃において200mPa・s以下の粘度を有する、請求項1~9のいずれか一項に記載の結合剤。
- 繊維用結合剤である、請求項1~10のいずれか一項に記載の結合剤。
- 請求項1~11のいずれか一項に記載の結合剤の固化物と、
当該固化物により結合された充填材と、を含む、固化体。 - 2000~6000g/molの重量平均分子量を有するカルボキシル基含有重合体と、多価アルコールとを、充填材に接触させて前駆体を得る工程であり、当該前駆体における前記カルボキシル基含有重合体が有するカルボン酸基と前記多価アルコールとのモル比が79:21~35:65である工程、及び
前記前駆体を固化させる工程を含み、
前記多価アルコールが、下記(1)及び(2)の条件の少なくとも一方を満たす、固化体の製造方法。
(1)前記多価アルコールが、20℃において900mPa・s以下の粘度を有する多価アルコールを含む。
(2)前記多価アルコールが、2~10個の水酸基で置換された炭化水素化合物、及びポリアルキレングリコールからなる群から選択される少なくとも一種の化合物を含む。 - 充填材と、当該充填材に接触する2000~6000g/molの重量平均分子量を有するカルボキシル基含有重合体及び多価アルコールを含む前駆体を固化して形成された固化体であって、
前記前駆体における前記カルボキシル基含有重合体が有するカルボン酸基と、前記多価アルコールとのモル比が79:21~35:65であり、
前記多価アルコールが、下記(1)及び(2)の条件の少なくとも一方を満たす、固化体。
(1)前記多価アルコールが、20℃において900mPa・s以下の粘度を有する多価アルコールを含む。
(2)前記多価アルコールが、2~10個の水酸基で置換された炭化水素化合物、及びポリアルキレングリコールからなる群から選択される少なくとも一種の化合物を含む。
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JP2019073725A (ja) * | 2018-12-28 | 2019-05-16 | 王子ホールディングス株式会社 | 繊維強化プラスチック成形体用基材及び繊維強化プラスチック成形体 |
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