Classifications

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  • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
  • C08G18/00—Polymeric products of isocyanates or isothiocyanates
  • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
  • C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
  • C08G18/65—Low-molecular-weight compounds having active hydrogen with high-molecular-weight compounds having active hydrogen
  • C08G18/6505—Low-molecular-weight compounds having active hydrogen with high-molecular-weight compounds having active hydrogen the low-molecular compounds being compounds of group C08G18/32 or polyamines of C08G18/38
  • C08G18/6511—Low-molecular-weight compounds having active hydrogen with high-molecular-weight compounds having active hydrogen the low-molecular compounds being compounds of group C08G18/32 or polyamines of C08G18/38 compounds of group C08G18/3203
  • C08G18/6517—Low-molecular-weight compounds having active hydrogen with high-molecular-weight compounds having active hydrogen the low-molecular compounds being compounds of group C08G18/32 or polyamines of C08G18/38 compounds of group C08G18/3203 having at least three hydroxy groups
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  • C08G18/00—Polymeric products of isocyanates or isothiocyanates
  • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
  • C08G18/70—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the isocyanates or isothiocyanates used
  • C08G18/72—Polyisocyanates or polyisothiocyanates
  • C08G18/74—Polyisocyanates or polyisothiocyanates cyclic
  • C08G18/76—Polyisocyanates or polyisothiocyanates cyclic aromatic
  • C08G18/7614—Polyisocyanates or polyisothiocyanates cyclic aromatic containing only one aromatic ring
  • C08G18/7621—Polyisocyanates or polyisothiocyanates cyclic aromatic containing only one aromatic ring being toluene diisocyanate including isomer mixtures
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  • C08G18/00—Polymeric products of isocyanates or isothiocyanates
  • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
  • C08G18/08—Processes
  • C08G18/10—Prepolymer processes involving reaction of isocyanates or isothiocyanates with compounds having active hydrogen in a first reaction step
  • C08G18/12—Prepolymer processes involving reaction of isocyanates or isothiocyanates with compounds having active hydrogen in a first reaction step using two or more compounds having active hydrogen in the first polymerisation step
• • C—CHEMISTRY; METALLURGY
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  • C08G18/00—Polymeric products of isocyanates or isothiocyanates
  • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
  • C08G18/08—Processes
  • C08G18/16—Catalysts
  • C08G18/22—Catalysts containing metal compounds
  • C08G18/227—Catalysts containing metal compounds of antimony, bismuth or arsenic
• • C—CHEMISTRY; METALLURGY
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  • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
  • C08G18/00—Polymeric products of isocyanates or isothiocyanates
  • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
  • C08G18/08—Processes
  • C08G18/16—Catalysts
  • C08G18/22—Catalysts containing metal compounds
  • C08G18/24—Catalysts containing metal compounds of tin
  • C08G18/242—Catalysts containing metal compounds of tin organometallic compounds containing tin-carbon bonds
• • C—CHEMISTRY; METALLURGY
  • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
  • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
  • C08G18/00—Polymeric products of isocyanates or isothiocyanates
  • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
  • C08G18/08—Processes
  • C08G18/16—Catalysts
  • C08G18/22—Catalysts containing metal compounds
  • C08G18/24—Catalysts containing metal compounds of tin
  • C08G18/244—Catalysts containing metal compounds of tin tin salts of carboxylic acids
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  • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
  • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
  • C08G18/00—Polymeric products of isocyanates or isothiocyanates
  • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
  • C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
  • C08G18/30—Low-molecular-weight compounds
  • C08G18/32—Polyhydroxy compounds; Polyamines; Hydroxyamines
  • C08G18/3203—Polyhydroxy compounds
  • C08G18/3212—Polyhydroxy compounds containing cycloaliphatic groups
• • C—CHEMISTRY; METALLURGY
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  • C08G18/00—Polymeric products of isocyanates or isothiocyanates
  • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
  • C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
  • C08G18/30—Low-molecular-weight compounds
  • C08G18/32—Polyhydroxy compounds; Polyamines; Hydroxyamines
  • C08G18/3203—Polyhydroxy compounds
  • C08G18/3215—Polyhydroxy compounds containing aromatic groups or benzoquinone groups
• • C—CHEMISTRY; METALLURGY
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  • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
  • C08G18/00—Polymeric products of isocyanates or isothiocyanates
  • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
  • C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
  • C08G18/30—Low-molecular-weight compounds
  • C08G18/32—Polyhydroxy compounds; Polyamines; Hydroxyamines
  • C08G18/3225—Polyamines
  • C08G18/3237—Polyamines aromatic
  • C08G18/324—Polyamines aromatic containing only one aromatic ring
• • C—CHEMISTRY; METALLURGY
  • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
  • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
  • C08G18/00—Polymeric products of isocyanates or isothiocyanates
  • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
  • C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
  • C08G18/40—High-molecular-weight compounds
  • C08G18/48—Polyethers
  • C08G18/4804—Two or more polyethers of different physical or chemical nature
  • C08G18/4812—Mixtures of polyetherdiols with polyetherpolyols having at least three hydroxy groups
• • C—CHEMISTRY; METALLURGY
  • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
  • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
  • C08G18/00—Polymeric products of isocyanates or isothiocyanates
  • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
  • C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
  • C08G18/40—High-molecular-weight compounds
  • C08G18/48—Polyethers
  • C08G18/4825—Polyethers containing two hydroxy groups
• • C—CHEMISTRY; METALLURGY
  • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
  • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
  • C08G18/00—Polymeric products of isocyanates or isothiocyanates
  • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
  • C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
  • C08G18/40—High-molecular-weight compounds
  • C08G18/48—Polyethers
  • C08G18/4829—Polyethers containing at least three hydroxy groups
• • C—CHEMISTRY; METALLURGY
  • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
  • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
  • C08G18/00—Polymeric products of isocyanates or isothiocyanates
  • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
  • C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
  • C08G18/40—High-molecular-weight compounds
  • C08G18/48—Polyethers
  • C08G18/487—Polyethers containing cyclic groups
  • C08G18/4879—Polyethers containing cyclic groups containing aromatic groups
• • C—CHEMISTRY; METALLURGY
  • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
  • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
  • C08G18/00—Polymeric products of isocyanates or isothiocyanates
  • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
  • C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
  • C08G18/65—Low-molecular-weight compounds having active hydrogen with high-molecular-weight compounds having active hydrogen
  • C08G18/66—Compounds of groups C08G18/42, C08G18/48, or C08G18/52
  • C08G18/6666—Compounds of group C08G18/48 or C08G18/52
  • C08G18/667—Compounds of group C08G18/48 or C08G18/52 with compounds of group C08G18/32 or polyamines of C08G18/38
  • C08G18/6681—Compounds of group C08G18/48 or C08G18/52 with compounds of group C08G18/32 or polyamines of C08G18/38 with compounds of group C08G18/32 or C08G18/3271 and/or polyamines of C08G18/38
  • C08G18/6685—Compounds of group C08G18/48 or C08G18/52 with compounds of group C08G18/32 or polyamines of C08G18/38 with compounds of group C08G18/32 or C08G18/3271 and/or polyamines of C08G18/38 with compounds of group C08G18/3225 or polyamines of C08G18/38
• • C—CHEMISTRY; METALLURGY
  • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
  • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
  • C08G18/00—Polymeric products of isocyanates or isothiocyanates
  • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
  • C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
  • C08G18/67—Unsaturated compounds having active hydrogen
  • C08G18/675—Low-molecular-weight compounds
• • C—CHEMISTRY; METALLURGY
  • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
  • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
  • C08G18/00—Polymeric products of isocyanates or isothiocyanates
  • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
  • C08G18/70—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the isocyanates or isothiocyanates used
  • C08G18/72—Polyisocyanates or polyisothiocyanates
  • C08G18/74—Polyisocyanates or polyisothiocyanates cyclic
  • C08G18/75—Polyisocyanates or polyisothiocyanates cyclic cycloaliphatic
  • C08G18/751—Polyisocyanates or polyisothiocyanates cyclic cycloaliphatic containing only one cycloaliphatic ring
  • C08G18/752—Polyisocyanates or polyisothiocyanates cyclic cycloaliphatic containing only one cycloaliphatic ring containing at least one isocyanate or isothiocyanate group linked to the cycloaliphatic ring by means of an aliphatic group
  • C08G18/753—Polyisocyanates or polyisothiocyanates cyclic cycloaliphatic containing only one cycloaliphatic ring containing at least one isocyanate or isothiocyanate group linked to the cycloaliphatic ring by means of an aliphatic group containing one isocyanate or isothiocyanate group linked to the cycloaliphatic ring by means of an aliphatic group having a primary carbon atom next to the isocyanate or isothiocyanate group
  • C08G18/755—Polyisocyanates or polyisothiocyanates cyclic cycloaliphatic containing only one cycloaliphatic ring containing at least one isocyanate or isothiocyanate group linked to the cycloaliphatic ring by means of an aliphatic group containing one isocyanate or isothiocyanate group linked to the cycloaliphatic ring by means of an aliphatic group having a primary carbon atom next to the isocyanate or isothiocyanate group and at least one isocyanate or isothiocyanate group linked to a secondary carbon atom of the cycloaliphatic ring, e.g. isophorone diisocyanate
• • C—CHEMISTRY; METALLURGY
  • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
  • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
  • C08G18/00—Polymeric products of isocyanates or isothiocyanates
  • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
  • C08G18/70—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the isocyanates or isothiocyanates used
  • C08G18/72—Polyisocyanates or polyisothiocyanates
  • C08G18/74—Polyisocyanates or polyisothiocyanates cyclic
  • C08G18/75—Polyisocyanates or polyisothiocyanates cyclic cycloaliphatic
  • C08G18/751—Polyisocyanates or polyisothiocyanates cyclic cycloaliphatic containing only one cycloaliphatic ring
  • C08G18/752—Polyisocyanates or polyisothiocyanates cyclic cycloaliphatic containing only one cycloaliphatic ring containing at least one isocyanate or isothiocyanate group linked to the cycloaliphatic ring by means of an aliphatic group
  • C08G18/757—Polyisocyanates or polyisothiocyanates cyclic cycloaliphatic containing only one cycloaliphatic ring containing at least one isocyanate or isothiocyanate group linked to the cycloaliphatic ring by means of an aliphatic group containing at least two isocyanate or isothiocyanate groups linked to the cycloaliphatic ring by means of an aliphatic group

Definitions

• the present invention relates to a urethane composition, and particularly to a curable polyurethane composition preferably used for adhesives, coating materials, sealing materials, waterproof materials, floor materials, wall materials, paints and the like.
• Polyurethane resin can be cured at room temperature and has excellent rubber elasticity, wear resistance, durability, etc., so paints, flooring materials, waterproof materials, adhesives, potting materials, wall materials, sealing materials, etc. As a result, it has been particularly used in recent years.
• a one-component type in which the terminal isocyanate of the polyurethane prepolymer is cured by moisture in the air after construction, and a curing agent containing a main agent containing polyurethane prepolymer and polyols are used at the time of construction. It is roughly divided into a two-component type that is mixed and cured.
• a lead-based catalyst has been widely used as a curing catalyst in the past.
• the use of lead-based catalysts has become a problem in terms of environment and safety, and curing catalysts that replace lead-based catalysts are being studied.
• Patent Documents 1 and 2 mention organic acid bismuth salts.
• the catalytic activity is high, there is a problem that it becomes difficult to secure the pot life. Further, if the amount of the catalyst added is increased in order to improve the curability at a low temperature, the initial elongation rate and the heat resistance are lowered.
• the present invention has been made in view of such circumstances, does not require a lead-based curing catalyst, has excellent curability and workability, and has an adhesive, a coating material, a sealing material, a waterproof material, a floor material, and a wall. It is an object of the present invention to provide a urethane composition suitable for various uses such as materials and paints.
• the urethane composition of the present invention contains an active hydrogen-containing organic compound (A) containing a polyol, a polyisocyanate (B), a curing catalyst (C), and an aromatic compound (D), and contains an aromatic compound (D).
• A active hydrogen-containing organic compound
• B polyisocyanate
• C curing catalyst
• D aromatic compound
• D has a structure represented by the formula (1).
• a lead-based curing catalyst does not require a lead-based curing catalyst, has excellent curability and workability, and is suitable for various applications such as adhesives, coating materials, sealing materials, waterproof materials, floor materials, wall materials, and paints.
• a urethane composition used in the above can be provided.
• the urethane composition of the present invention contains an active hydrogen-containing organic compound (A) containing a polyol, a polyisocyanate (B), a curing catalyst (C), and an aromatic compound (D) as essential components.
• A active hydrogen-containing organic compound
• B polyisocyanate
• C curing catalyst
• D aromatic compound
• the active hydrogen-containing organic compound (A) is an organic compound having active hydrogen.
• Active hydrogen is a functional group hydrogen that can react with isocyanate to form a urethane bond or a urea bond. Examples of such a functional group include a hydroxyl group and an amino group. Examples of the active hydrogen-containing organic compound (A) include organic compounds having two or more of the above functional groups in the molecule.
• the active hydrogen-containing organic compound (A) contains a polyol (a compound having two or more hydroxyl groups at the molecular end).
• the active hydrogen-containing organic compound (A) may contain only a polyol, or may contain both a polyol and an active hydrogen-containing organic compound (polyamine or the like) other than the polyol.
• the polyol is not particularly limited as long as it is generally used for producing urethane compositions, but for example, it is a polyether polyol, a polyester polyol, a polymer polyol, and further, a phosphorus-containing polyol or a halogen-containing polyol. Examples thereof include flame-retardant polyols and the like. These polyols can be used alone or mixed as appropriate.
• polyether polyol for example, ethylene glycol, propylene glycol, glycerin, pentaerythritol, ethylenediamine, ethanolamine, diethanolamine or the like is used as an initiator, and for example, ethylene oxide, propylene oxide or a mixture thereof is subjected to ring-opening addition polymerization.
• examples thereof include those obtained, or polytetramethylene ether glycol obtained by ring-opening polymerization of tetrahydrofuran.
• polyester polyol examples include polyvalent basic carboxylic acids such as maleic acid, fumaric acid, succinic acid, adipic acid, sebacic acid, azelaic acid, phthalic acid, isophthalic acid, terephthalic acid, and trimellitic acid, and polyhydric alcohols. Examples thereof include those obtained by a condensation reaction and polymers of lactone.
• polyhydric alcohol examples include ethylene glycol, diethylene glycol, triethylene glycol, propylene glycol, dipropylene glycol, 1,3-butylene glycol, 1,4-butylene glycol, 1,5-pentanediol, and 1,6-hexane.
• examples thereof include methylolpropane, glycerin, 1,2,6-hexanetriol, pentaerythritol, castor oil, and higher fatty acids such as palm oil fatty acid, flaxseed oil fatty acid, soybean oil fatty acid, cottonseed oil fatty acid, millet oil fatty acid, and castor oil fatty acid.
• polyester polyol obtained by blending the above into an acid component.
• lactone polymer examples include ring-opening polymerization of ⁇ -caprolactam, ⁇ -methyl- ⁇ -caprolactam, ⁇ -methyl- ⁇ -caprolactam and the like.
• polymer polyol for example, a monomer containing a hydroxyl group such as hydroxyethyl acrylate, hydroxybutyl acrylate, trimethylolpropane acrylic acid monoester alone or copolymerizable with these, for example, acrylic acid.
• a monomer containing a hydroxyl group such as hydroxyethyl acrylate, hydroxybutyl acrylate, trimethylolpropane acrylic acid monoester alone or copolymerizable with these, for example, acrylic acid.
• Examples of the flame-retardant polyol include a phosphorus-containing polyol obtained by adding an alkylene oxide to a phosphoric acid compound, a polyol obtained by ring-opening polymerization of epichlorohydrin and trichlorobutylene oxide, a polyether polyol, a polyester polyol, and an acrylic polyol.
• Examples thereof include halogen-containing polyols in which the hydrogen atom of the above is partially or wholly replaced with a fluorine atom.
• polyamines examples include aliphatic polyamines and aromatic polyamines.
• aliphatic polyamine ethylenediamine, polyether polyamine and the like are used, and as the aromatic polyamine, 3,3'-dichloro-4,4'-diaminodiphenylmethane, DETDA, 2,4-diamino-3,5-diethyltoluene, etc. 2,6-Diamino-3,5-diethyltoluene, and mixtures thereof, mixtures such as EtaCure 100 (2,4-isomer / 2,6-isomer mass ratio of about 80/20) manufactured by Albemar. , EtaCure 420 (4,4'-methylenebis (N-sec-butylaniline)) manufactured by Albemar, 4,4'-methylenebis (2-ethyl-6-methylaniline) and the like can be mentioned.
• active hydrogen-containing organic compounds can be used alone or in combination of two or more.
• the active hydrogen-containing organic compound preferably contains both a polyol and a polyamine. In this case, workability, curability, and mechanical properties of the composition are particularly good.
• the polyisocyanate (B) is a compound having two or more isocyanate groups in the molecule, and is not particularly limited as long as it is generally used, but for example, trimethylenediisocyanate and trimethylhexamethylene.
• Alkylene diisocyanate such as diisocyanate, tetramethylene diisocyanate, hexamethylene diisocyanate, bis (isocyanatemethyl) cyclohexane, cyclopentane diisocyanate, cyclohexanediisocyanate, cycloalkylene-based diisocyanate such as isophorone diisocyanate, tolylene diisocyanate, phenylenediocyanate, diphenylmethane diisocyanate, diphenyl ether diisocyanate, etc.
• Aromatic aliphatic diisocyanate such as aromatic diisocyanate, xylylene diisocyanate, diisocyanate diethylbenzene, triisocyanate such as triphenylmethane triisocyanate, triisocyanatebenzene, triisocyanate toluene, tetraisocyanate such as diphenyldimethylmethane tetraisocyanate, and tolylene diisocyanate.
• Polymerized polyisocyanates such as metric and trimeric, and excess amounts of these polyisocyanates include ethylene glycol, propylene glycol, diethylene glycol, trimethylolpropane, hydrogenated bisphenol A, hexanetriol, glycerin, pentaerythritol, castor oil, and tri.
• Examples thereof include a terminal isocyanate-containing compound obtained by reacting a low-molecular-weight active hydrogen-containing organic compound such as ethanolamine.
• the content of the polyisocyanate (B) in the urethane composition of the present invention is preferably 1 to 100 parts by mass, preferably 5 to 30 parts by mass, based on 100 parts by mass of the active hydrogen-containing organic compound (A). Specifically, this content is, for example, 1, 5, 10, 15, 20, 30, 40, 50, 60, 70, 80, 90, 100 parts by mass, and any two of the numerical values exemplified here. It may be within the range between the two.
• Examples of the curing catalyst in the present invention include tin compounds, bismuth compounds, organozinc compounds, organozinc compounds, and organocopper compounds as catalysts that can be preferably used. Among them, the use of tin compounds and bismuth compounds is preferable.
• a known tin compound can be used as the tin compound of the curing catalyst (C).
• divalent tin compounds such as tin octylate, tin naphthenate, and tin stearate, tin neodecanoate; dibutyltin dioctate, dibutyltin dilaurate, dioctyltin diversatete, dibutyltin bistriethoxysilicate, dibutyltin dioleyl malate.
• bismuth compound of the curing catalyst (C) a known bismuth organic acid can be used.
• bismuth carboxylate, bismuth 2-ethylhexylate, bismuth neodecanoate, and bismuth carboxylate of a resinous acid bismuth salt are suitable.
• the metal catalyst that can be preferably used for the curing catalyst (C) include zinc 2-ethylhexylate, zinc naphthenate, zinc neodecanoate and the like as organic zinc catalysts, and zirconyl 2-ethylhexylate and naphthenic acid as organic zirconium catalysts.
• the organic copper catalyst include zinc zirconyl, zinc neodecanoate, and the like, and copper naphthenate and the like can be mentioned.
• the content of the curing catalyst (C) in the urethane composition of the present invention is 0.0005 to 5 parts by mass with respect to 100 parts by mass in total of the active hydrogen-containing organic compound (A) and the polyisocyanate (B). It is preferable, more preferably 0.001 to 3 parts by mass.
• this content is, for example, 0.0005, 0.001, 0.005, 0.01, 0.05, 0.1, 0.5, 1, 2, 3, 4, 5 parts by mass. It may be within the range between any two of the numerical values exemplified here.
• the curing catalyst (C) can be blended with the active hydrogen-containing organic compound (A) or the polyisocyanate (B), but is preferably blended with the active hydrogen-containing organic compound (A) from the viewpoint of storage stability. Further, if necessary, it can be added at the construction site as an on-site addition type accelerator at the time of mixing the two liquids.
• the aromatic compound in the present invention has a structure represented by the formula (1).
• the two R 1s are the same or different, hydrogen or an alkyl group which may have a branch of 1 to 8 carbon atoms, or a carbon composed of the two R 1s linked to each other. It is an alkylene group which may have a branch of the number 2 to 16, n and m are the same or different integers of 0 to 10, and two R 2s are the same or different and may have a branch.
• Examples of the alkyl group of R 1 or R 3 which may have a branch having 1 to 8 carbon atoms include a methyl group, an ethyl group, a propyl group, an isopropyl group, a butyl group, an isobutyl group, and an s-butyl group.
• t-butyl group pentyl group, isopentyl group, neopentyl group, t-pentyl group, hexyl group, isohexyl group, 1-methylpentyl group, 2-methylpentyl group, 3-methylpentyl group, 1-ethylbutyl group, 2- Ethylbutyl group, 1,1-dimethylbutyl group, 1,2-dimethylbutyl group, 1,3-dimethylbutyl group, 2,2-dimethylbutyl group, 2,3-dimethylbutyl group, 3,3-dimethylbutyl group , 1,1,2-trimethylpropyl group, heptyl group, isoheptyl group, 1-methylhexyl group, 2-methylhexyl group, 3-methylhexyl group, 4-methylhexyl group, 1-ethylpentyl group, 2-Ethylpentyl group, 3-ethylpentyl group, 1,1
• Examples of the alkylene group composed of two R1s linked to each other include those in which the carbon atoms at the ends of the above alkyl groups are bonded to each other, and examples thereof include an ethylene group, a propylene group, an isopropylene group and a butylene group. Examples include pentylene groups.
• the number of carbon atoms in the chief examiner of this alkylene group is preferably 5. Specifically, the carbon number of this alkylene group is, for example, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16 and is exemplified here. It may be within the range between any two of the numerical values.
• alkylene group of R 2 examples include an ethylene group, a propylene group, an isopropylene group, a butylene group and the like.
• the number of carbon atoms in the chief examiner of this alkylene group is, for example, 1, 2, 3, and 4, and may be in the range between any two of the numerical values exemplified here.
• alkenyl group which may have a branch of R3 having 1 to 8 carbon atoms include a vinyl group, a 1-propenyl group, an isopropenyl group, an allyl group, a 1-butenyl group, a 2-butenyl group and a 3-.
• Butenyl group 1-methyl-1-propenyl group, 2-methyl-1-propenyl group, 2-methyl-2-propenyl group, 1-pentynyl group, 2-pentynyl group, 3-pentynyl group, 4-pentynyl group, 1-Methyl-1-butenyl group, 2-methyl-1-butenyl group, 3-methyl-1-butenyl group, 1-methyl-2-butenyl group, 2-methyl-2-butenyl group, 3-methyl-2 -Butenyl group, 1-methyl-3-butenyl group, 2-methyl-3-butenyl group, 3-methyl-3-butenyl group, 1-ethyl-1-propenyl group, 1-ethyl-2-propenyl group, 1 , 1-dimethylallyl group, 1,2-dimethyl-1-propenyl group, 1-hexenyl group, 2-hexenyl group, 3-hexenyl group, 4-hexenyl group, 5-hexenyl group
• the carbon atoms of R 1 and R 3 are, for example, 1, 2, 3, 4, 5, 6, 7, and 8, respectively, and are within the range between any two of the numerical values exemplified here. May be.
• N and m are integers of 0 to 10, respectively, and 1 to 3 are preferable from the viewpoint of workability.
• n and m are, for example, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, and 10, and are within the range between any two of the numerical values exemplified here. There may be.
• N + m is preferably an integer of 1 to 20, and preferably 2 to 10 from the viewpoint of physical properties and workability after curing.
• n + m is, for example, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20. , It may be within the range between any two of the numerical values exemplified here.
• the aromatic compound (D) is preferably represented by the following general formula (2).
• the two R 1s are the same or different, hydrogen or an alkyl group which may have a branch of 1 to 8 carbon atoms, or a carbon composed of two R 1s linked to each other.
• An alkylene group may have a branch of number 2-16
• the four R3s are an alkyl or alkenyl group which may have the same or different branches of hydrogen or carbons 1-8
• R. 4 represents a hydrogen or a methyl group
• n and m are the same or different, and are integers of 0 to 10
• n + m are integers of 1 to 20.
• aromatic compound (D) examples include 2,2-bis (4-polyoxyethylene oxyphenyl) propane, 2,2-bis (4-polyoxypropylene oxyphenyl) propane, and ADEKA polyether BPX. -11, ADEKA Polyether BPX-21, 4,4'-(1-methylethylidene) bis (2-allylphenol, 2,2'-bis (4-hydroxy-3,5-dimethylphenyl) propane, 4, Examples thereof include 4'-(1,3-dimethylbutylidene) diphenol, 1,1'-bis (4-hydroxy-3-methylphenyl) cyclohexane, etc.
• the aromatic compound (D) is a single compound. It may be a mixture of a plurality of compounds.
• the content ratio of the curing catalyst (C) to the aromatic compound (D) is preferably 0.01 to 10 in terms of molar ratio (curing catalyst (C) / aromatic compound (D)), more preferably 0.1. ⁇ 5.
• the molar ratio is within the above range, the balance between workability and curing performance is excellent.
• the molar ratio is, for example, 0.01, 0.02, 0.03, 0.04, 0.05, 0.06, 0.07, 0.08, 0.09, 0.1. , 0.2, 0.3, 0.4, 0.5, 0.6, 0.7, 0.8, 0.9, 1, 2, 3, 4, 5, 6, 7, 8, 9 It may be 10 and may be in the range between any two of the numerical values exemplified here.
• the curing catalyst (C) and the aromatic compound (D) can also be mixed in advance.
• an organic solvent or a plasticizer may be added from the viewpoint of economy and workability.
• the organic solvent is not particularly limited as long as it is compatible with the curing catalyst and the aromatic compound, but for example, aromatic compounds such as benzene, toluene, xylene, ethylbenzene and trimethylbenzene; Aliphatic compounds such as hexane, heptane, octane, decane, tetradecane, hexadecane, octadecane; Butyl acetate, octyl acetate, 2-ethylhexyl acetate, cyclohexyl acetate, benzyl acetate, isopropyl propionate, butyl propionate, isobutyl propionate, octyl propionate, 2-ethylhexyl prop
• Acid esters Dihydric alcohol esters such as diethylene glycol dibenzoate and triethylene glycol 2-ethylbutyrate; methyl acetyllicyleneolate, butyl acetyllicyleneolate, butylphthalylbutylglycolate, acetyltriethyl citrate, acetyltributyl citrate and the like. Examples thereof include oxyacid esters.
• organic solvents and plasticizers that are liquid at room temperature and have a boiling point of 150 ° C. or higher, which dissolve the curing catalyst and do not separate even when stored for a long period of time under low temperature conditions, are preferable.
• mineral tarpens, phthalates, adipates, 2-ethylhexanoic acid, neodecanoic acid and the like are preferable.
• the boiling point is 150 ° C. or higher, volatility is suppressed, which is more preferable from the viewpoint of handleability and storage stability.
• an organic solvent or a plasticizer having good solubility in a curing catalyst and maintaining uniformity during storage is more preferable because the metal content becomes uniform and a stable curing time can be obtained.
• the urethane composition of the present invention contains an acidic compound, a filler, a colorant, a plasticizer, a curing accelerator, and a curing agent for the purpose of further improving economic efficiency, workability when constructing the composition, and physical properties after curing.
• Additives usually added to urethane compositions may be added, such as retarders, anti-sags, anti-aging agents, solvents, weather-imparting agents / heat-resistant imparting agents, wetting / dispersants, and the like.
• the acidic compound has an action of stabilizing the curing catalyst (C).
• the acidic compound is not particularly limited, but an acidic compound such as an organic acid or an inorganic acid can be used. Of these, an aliphatic carboxylic acid compound and an organic sulfonic acid compound are particularly preferable, and a saturated or unsaturated linear or branched aliphatic carboxylic acid having 2 to 18 carbon atoms is more preferable.
• saturated aliphatic carboxylic acids such as acetic acid, propionic acid, hexane acid, octanoic acid, 2-ethylhexanoic acid, neodecanoic acid, lauric acid and stearic acid, oleic acid, linoleic acid, linolenic acid, arachidonic acid and the like.
• saturated and unsaturated aliphatic dicarboxylic acids such as unsaturated aliphatic carboxylic acids, fumaric acids and maleic acids.
• the molar ratio of the curing catalyst (C) to the acidic compound is preferably 0.2 to 50, more preferably 0.5 to 20 in terms of molar ratio (acidic compound / curing catalyst).
• this molar ratio is, for example, 0.2, 0.3, 0.4, 0.5, 0.6, 0.7, 0.8, 0.9, 1, 2, 3, 4 It is 5, 6, 7, 8, 9, 10, 20, 30, 40, 50, and may be within the range between any two of the numerical values exemplified here.
• the filler examples include calcium carbonate (heavy calcium carbonate, precipitated calcium carbonate, etc.), kaolin, talc, fumed silica, precipitated silica, anhydrous silicic acid, hydrous silicic acid, clay, calcined clay, and glass. , Bentnite, organic bentnite, glass balloon, glass fiber, asbestos, glass filament, crushed quartz, silicate soil, aluminum silicate, aluminum hydroxide, zinc oxide, magnesium oxide, titanium dioxide, and the like. Specifically, as the colorant, iron oxide, carbon black, phthalocyanine blue, phthalocyanine green and the like are used.
• plasticizer examples include phthalates such as dibutylphthalate, diheptylphthalate, dioctylphthalate and butylbenzylphthalate, dioctyl adipate, dioctyl succinate, diisodecyl succinate, diisodecyl sebacate, butyl oleate and the like.
• Fat group carboxylic acid esters glycol esters such as pentaerythritol ester, phosphoric acid esters such as trioctyl phosphate and tricresyl phosphate, epoxidized soybean oil, epoxy plasticants such as benzyl epoxy stearate, chlorinated paraffin and the like. Is used.
• hydrogenated castor oil silicic acid anhydride, organic bentonite, colloidal silica, etc. are used as the sagging preventive agent.
• vulcanization accelerators ultraviolet absorbers, radical chain inhibitors, peroxide decomposing agents, various antiaging agents and the like are used.
• Polypropylene glycol diol type molecular weight 1000 manufactured by Fuji Film Wako Pure Chemical Industries, Ltd.
• Polypropylene glycol diol type molecular weight 2000 manufactured by Fuji Film Wako Pure Chemical Industries, Ltd.
• Polypropylene glycol triol type molecular weight 3000 manufactured by Fuji Film Wako Pure Chemical Industries, Ltd.
• Isophorone diisocyanate manufactured by Tokyo Kasei Kogyo Co., Ltd., diisosocyanate
• Bismuth octylate manufactured by Nitto Kasei Co., Ltd., bismuth tris (2-ethylhexanoate), bismuth content 32.5%
• Urethane Composition A two-component curable urethane composition composed of a main agent and a curing agent was prepared with the compositions (parts by mass) shown in Tables 1 to 3.
• Prepolymers A to C those manufactured in Production Examples 1 to 3, product name "Polypropylene glycol diol type molecular weight 700", manufactured by Fuji Film Wako Pure Chemical Industries, Ltd.
• Product name “Polypropylene glycol diol type molecular weight 2000", Fuji Film Sum Kojunyaku Kogyo Co., Ltd.
• product name "EtaCure 100 Plus”, Albemar Japan Co., Ltd., diethylmethylbenzenediamine product name "4,4'-methylenebis- (2-chloroaniline)", Tokyo Kasei Kogyo Co., Ltd.

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