Classifications

• • 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
  • C08F2/00—Processes of polymerisation
  • C08F2/38—Polymerisation using regulators, e.g. chain terminating agents, e.g. telomerisation
• • 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
  • C08F293/00—Macromolecular compounds obtained by polymerisation on to a macromolecule having groups capable of inducing the formation of new polymer chains bound exclusively at one or both ends of the starting macromolecule
• • 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
  • C08F4/00—Polymerisation catalysts
  • C08F4/40—Redox systems
• • C—CHEMISTRY; METALLURGY
  • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
  • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
  • C08L53/00—Compositions of block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers
• • C—CHEMISTRY; METALLURGY
  • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
  • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
  • C09D153/00—Coating compositions based on block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Coating compositions based on derivatives of such polymers
• • C—CHEMISTRY; METALLURGY
  • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
  • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
  • C09J153/00—Adhesives based on block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Adhesives based on derivatives of such polymers

Definitions

• the present inventors have confirmed that the curable resin composition containing a specific block copolymer has high fluidity even at room temperature, and the toughness of the cured product is as follows.
• the present invention was completed by finding that it was higher than the cured product of a telechelic polymer having reactive groups at both ends.
• a curable resin composition A block copolymer having a structural unit consisting of polymer block (A) / polymer block (B) / polymer block (A),
• the polymer block (A) is a polymer having a (meth) acrylic acid alkyl ester compound as a main constituent monomer and having a glass transition temperature of 10 ° C. or lower, and has an average crosslinkable functional group per block. Containing 0.7 or more,
• the polymer block (B) is different from a polymer having a (meth) acrylic acid alkyl ester compound as a main constituent monomer and having a glass transition temperature of 0 ° C. or lower (however, the polymer block (A)).
• Curable resin composition whose content rate of the said polymer block (A) is 33 mass parts or less with respect to 100 mass parts of total amounts of the said polymer blocks (A) and (B).
• R 1 represents hydrogen or a methyl group
• R 2 represents a linear or branched alkylene group having 2 to 6 carbon atoms
• R 3 represents hydrogen, an alkyl group having 1 to 20 carbon atoms, or a carbon number
• n represents an integer of 1 to 100.
• the polymerizable unsaturated group can also be introduced by producing a polymer having a functional group in the molecule and then reacting the functional group capable of reacting with the functional group and a compound having a polymerizable unsaturated group.
• a polymerizable unsaturated group can be introduced into the polymer by reacting a compound having both an isocyanate group and a polymerizable unsaturated group.
• a polymer having a carboxy group may be reacted with a compound having both an epoxy group and a polymerizable unsaturated group.
• the crosslinkable structural unit in the polymer block (A) is not particularly limited, but is, for example, 0.01 mol% or more, for example, 0.1 mol% with respect to all the structural units of the polymer block (A). For example, it may be 0.5 mol% or more. When the amount of the crosslinkable structural unit introduced is 0.01 mol% or more, it becomes easy to obtain a block copolymer having high mechanical strength.
• the upper limit of the crosslinkable constitutional unit is, for example, 95 mol% or less, for example, 90 mol% or less, for example, 80 mol% or less, and for example, 60 mol% or less. is there. The upper limit is also, for example, 50 mol% or less, for example, 40 mol% or less, for example, 30 mol% or less, for example, 20 mol% or less, for example, 10 mol% or less.
• the glass transition temperature (Tg) of the polymer block (A) is 10 ° C. or less, and the Tg of the polymer block (A) can contribute to the fluidity of the curable resin composition. Therefore, when the glass transition temperature is 10 ° C. or lower, there is an advantage that a uniform cured film can be easily obtained. Further, for example, it is 0 ° C. or less, for example, ⁇ 10 ° C. or less, for example ⁇ 20 ° C. or less, and for example ⁇ 30 ° C. or less. For example, it is ⁇ 40 ° C. or lower. Further, Tg is preferably ⁇ 80 ° C. or higher due to the limitation of usable constituent monomer units.
• the upper limit of the crosslinkable structural unit is, for example, 20 mol% or less, for example, 10 mol% or less, and for example, 5 mol% or less.
• the cross-linking points are aggregated in the polymer block (A), and the ratio of the cross-linkable structural unit to the total structural units of the polymer block (B) is the polymer. It is preferable that the ratio of the crosslinkable structural unit to the total structural unit of the block (A) is not exceeded.
• the polymer block (B) is more preferably in the range of 23,000 to 350,000, and still more preferably in the range of 25,000 to 200,000. Yes, preferably in the range of 30,000 to 150,000, and more preferably in the range of 30,000 to 100,000.
• RAFT method reversible addition-cleavage chain transfer polymerization method
• NMP method nitroxy radical method
• ATRP method atom transfer radical polymerization method
• organic tellurium compounds Various polymerization methods such as polymerization method using TERP (TERP method), polymerization method using organic antimony compound (SBRP method), polymerization method using organic bismuth compound (BIRP method), and iodine transfer polymerization method can be employed.
• TERP method polymerization method using organic antimony compound
• BIRP method organic bismuth compound
• iodine transfer polymerization method iodine transfer polymerization method
• the RAFT method, the NMP method, and the iodine transfer polymerization method are preferable from the viewpoint of controllability of polymerization and ease of implementation.
• the reaction temperature in the polymerization reaction by the RAFT method is preferably 30 ° C. or higher and 120 ° C. or lower, more preferably 40 ° C. or higher and 110 ° C. or lower, and further preferably 50 ° C. or higher and 100 ° C. or lower. If reaction temperature is 30 degreeC or more, a polymerization reaction can be advanced smoothly. On the other hand, if reaction temperature is 120 degrees C or less, while being able to suppress a side reaction, the restrictions regarding the initiator and solvent which can be used are eased.
• the nitroxide radical represented by the general formula (3) is in the range of 0.001 to 0.2 mol with respect to 1 mol of the nitroxide compound represented by the general formula (2).
• the polymerization may be carried out by adding in the above.
• the polymerization of the block copolymer may be performed in the presence of a chain transfer agent, if necessary, regardless of the polymerization method.
• a chain transfer agent known ones can be used. Specifically, ethanethiol, 1-propanethiol, 2-propanethiol, 1-butanethiol, 2-butanethiol, 1-hexanethiol, 2-hexane Thiol, 2-methylheptane-2-thiol, 2-butylbutane-1-thiol, 1,1-dimethyl-1-pentanethiol, 1-octanethiol, 2-octanethiol, 1-decanethiol, 3-decanethiol, 1-undecanethiol, 1-dodecanethiol, 2-dodecanethiol, 1-tridecanethiol, 1-tetradecanethiol, 3-methyl-3-undecanethiol, 5-ethy
• aziridine compound examples include 1,6-bis (1-aziridinylcarbonylamino) hexane, 1,1 ′-(methylene-di-p-phenylene) bis-3,3-aziridylurea, 1,1′- (Hexamethylene) bis-3,3-aziridylurea, ethylenebis- (2-aziridinylpropionate), tris (1-aziridinyl) phosphine oxide, 2,4,6-triaziridinyl-1,3,5- And triazine, trimethylolpropane-tris- (2-aziridinylpropionate), and the like.
• the inflection corresponding to a polymer block (A) and a polymer block (B) is carried out by performing differential scanning calorimetry of the block copolymer obtained in the manufacture example and the comparative manufacture example. Points are obtained, from which the Tg of each polymer block can be determined.
• the molecular weight of the obtained polymer A was Mn25,300, Mw30,400, and Mw / Mn1.20 from GPC measurement (polystyrene conversion).
• Acetonitrile (200 g), 1,7-octadiene (15.4 g) and pentamethyldiethylenetriamine (1.21 g) were added thereto, and stirring was continued for 8 hours.
• the mixture was heated and stirred at 80 ° C. under reduced pressure to remove volatile components, thereby obtaining a concentrate (1) containing a polymer.
• Toluene is added to the concentrate (1) to dissolve the polymer, diatomaceous earth is added as a filter aid, aluminum silicate and hydrotalcite are added as an adsorbent, and an oxygen-nitrogen mixed gas atmosphere (oxygen concentration 6%)
• the mixture was heated and stirred at an internal temperature of 100 ° C.
• the solid content in the mixed solution was removed by filtration, and the filtrate was heated and stirred at an internal temperature of 100 ° C. under reduced pressure to remove volatile components, thereby obtaining a concentrate (2) containing a polymer.
• Examples 2 to 45, Comparative Examples 1 to 4 A curable resin composition was prepared in the same manner as in Example 1 using the copolymers obtained in Production Examples 2 to 41 and Comparative Production Examples 1 to 4, and sheets (cured products) were produced. Further, the mechanical properties of the sheet were measured. The results are shown in Tables 9 to 11.

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• 2019
  • 2019-04-18 CN CN201980025648.5A patent/CN111971342A/zh active Pending
  • 2019-04-18 JP JP2020516284A patent/JP7239901B2/ja active Active
  • 2019-04-18 WO PCT/JP2019/016623 patent/WO2019208386A1/ja not_active Ceased

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