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JP-7855595-B2 - curable composition

JP7855595B2JP 7855595 B2JP7855595 B2JP 7855595B2JP-7855595-B2

Inventors

  • ハウ，スティーブン エリック
  • リーメン，エドワード トーマス

Assignees

  • サンスター・エンジニアリング・アメリカズ・インコーポレイテッド

Dates

Publication Date
20260508
Application Date
20220131
Priority Date
20210204

Claims (13)

  1. (Formula 1): (CH 2 =C(R 1 )-CO-OR 2 -O-CO-NH-R 3 -NH-CO) n -R 4 [In the formula, Each of R1 is independently a hydrogen atom or a methyl group. Each of R2 is an aliphatic group having 1 to 8 carbon atoms, Each of R3 is independently an aromatic group or aliphatic group having 1 to 30 carbon atoms. R4 is an aromatic or aliphatic group with a number average molecular weight of 500 or more, having a polycarbonate backbone and/or polyester backbone. n is an integer between 2 and 4. A prepolymer represented by (A1), and (Formula 2): (CH 2 =C(R 5 )-CO-OR 6 -O-CO-NH) m -R 7 [In the formula, Each of R5 is independently a hydrogen atom or a methyl group. Each of R6 is an independently aliphatic group having 1 to 8 carbon atoms. Each of R7 is independently an aromatic group or an aliphatic group having 1 to 30 carbon atoms. m is an integer between 2 and 4. Nonpolymer (A2) represented by A curable composition comprising, A curable composition comprising 20% by weight or more of the prepolymer (A1) and 20% by weight or more of the nonpolymer (A2) .
  2. The curable composition according to claim 1, wherein the number average molecular weight of the prepolymer (A1) is 1000 or more and 5000 or less, and the number average molecular weight of the nonpolymer (A2) is 750 or less.
  3. The curable composition according to claim 1, wherein the tanδ at 10°C to 30°C after curing is 0.07 or higher.
  4. The curable composition according to claim 1, further comprising other acrylic monomers (A3).
  5. The curable composition according to claim 1, comprising 10% by weight or more of solid particles (B).
  6. A curable composition according to claim 1, comprising a phosphorus-containing initiator.
  7. A curable masking material comprising the curable composition described in claim 1.
  8. A masking step comprising providing a masking member that masks at least a portion of the surface of a substrate using the curable masking material described in claim 7 ; A curing step including curing the masking member; An exposure step, which includes peeling off the masking member to expose a portion of the substrate surface; and a bonding step, which includes bonding another member to the exposed portion of the substrate surface; A method for producing a compound, including the compound.
  9. moreover, A method for producing a composite according to claim 8 , comprising a painting step, which includes applying a coating to the substrate.
  10. The method for manufacturing a composite according to claim 8 , further comprising the masking step of applying the curable masking material to a thickness of 0.1 mm or more to mask at least a portion of the surface of the substrate.
  11. The method for manufacturing a composite according to claim 8 , wherein the masking step includes applying the curable masking material in a width of 5 mm or more to mask at least a portion of the surface of the substrate.
  12. The method for producing the composite according to claim 8 , wherein the base material is a resin.
  13. A method for manufacturing the composite according to claim 8 , using a robot.

Description

This invention relates to a curable composition, a curable masking material containing the curable composition, and a method for producing a binder using the curable composition. When painting various products, masking is performed to protect parts of the substrate so that paint is applied only to specific areas. Conventionally, masking was done by applying film-like materials such as tape, but this method is not easily automated due to handling difficulties. Instead of film-like materials such as tape, it is known to apply a masking material, which consists of a resin dispersed or dissolved in a solvent, to the substrate (Patent Documents 1-2). US 6284826B1USA 2003/0149164A1 <Curable composition> A curable composition in an embodiment of the present invention, (Formula 1): (CH 2 =C(R 1 )-CO-OR 2 -O-CO-NH-R 3 -NH-CO) n -R 4 [In the formula, each of R1 is independently a hydrogen atom or a methyl group, Each of R2 is an independently aliphatic group having 1 to 8 carbon atoms. Each of R3 is independently an aromatic group or aliphatic group having 1 to 30 carbon atoms. R4 is an aromatic or aliphatic group with a molecular weight of 500 or more having a polycarbonate backbone and/or polyester backbone. n is between 2 and 4. A prepolymer represented by (A1), and (Formula 2): (CH 2 =C(R 5 )-CO-OR 6 -O-CO-NH) m -R 7 [In the formula, each of R 5 is independently a hydrogen atom or a methyl group, Each of R 6 is independently an aliphatic group having 1 to 8 carbon atoms. Each of R7 is independently an aromatic or aliphatic group having 1 to 30 carbon atoms. m is between 2 and 4. Nonpolymer (A2) represented by Includes. [Prepolymer (A1)] A curable composition in an embodiment of the present invention, (CH 2 =C(R 1 )-CO-OR 2 -O-CO-NH-R 3 -NH-CO) n -R 4 (Formula 1) [In the formula, each of R1 is independently a hydrogen atom or a methyl group, Each of R2 is an independently aliphatic group having 1 to 8 carbon atoms. Each of R3 is independently an aromatic group or aliphatic group having 1 to 30 carbon atoms. R4 is an aromatic or aliphatic group with a molecular weight of 500 or more having a polycarbonate backbone and/or polyester backbone. n is between 2 and 4. It contains a prepolymer (A1) represented by [formula]. Each R1 is independently either a hydrogen atom or a methyl group. R2 is an aliphatic group, which may be an aliphatic hydrocarbon group, and is preferably an alkylene group. The number of carbon atoms in R2 is 1 to 8, and may be 1 or more, 2 or more, or 3 or more, and may be 8 or less, 7 or less, or 6 or less. Specific examples of R2 include ethylene groups, propylene groups, trimethylene groups, and butylene groups. R3 is an aromatic group or an aliphatic group, and may be an aromatic hydrocarbon group or an aliphatic hydrocarbon group. The number of carbon atoms in R3 is 1 to 30, and may be 2 or more, 4 or more, 6 or more, 8 or more, or 10 or more, and may be 28 or less, 24 or less, 20 or less, or 16 or less. R3 may be a group derived from a diisocyanate compound. That is, the group may be obtained by removing two -NCO groups from a diisocyanate compound. The diisocyanate compound may be an aliphatic diisocyanate or an aromatic diisocyanate, and from the viewpoint of physical properties after curing, an aliphatic diisocyanate is preferred. The alicyclic diisocyanate may be a monocyclic alicyclic diisocyanate or a polycyclic alicyclic diisocyanate (e.g., bicyclic alicyclic diisocyanate, tricyclic alicyclic diisocyanate, bridged alicyclic alicyclic diisocyanate, etc.). Examples of diisocyanate compounds include trimethylene diisocyanate, 1,2-propylene diisocyanate, butylene diisocyanate (tetramethylene diisocyanate, 1,2-butylene diisocyanate, 2,3-butylene diisocyanate, 1,3-butylene diisocyanate), hexamethylene diisocyanate, pentamethylene diisocyanate, 2,2,4-trimethylhexamethylene diisocyanate, 2,4,4-trimethylhexamethylene diisocyanate, and 2,6-diisocyanate. Acyclic aliphatic diisocyanates such as methyl caproate, lysine diisocyanate, trimethylhexamethylene diisocyanate, and decamethylene diisocyanate; 1,3-cyclopentane diisocyanate, 1,3-cyclopentene diisocyanate, cyclohexane diisocyanate (1,4-cyclohexane diisocyanate, 1,3-cyclohexane diisocyanate), 3-isocyanate methyl-3,5,5-trimethylcyclohexyl isocyanate (isophorone diisocyanate, IP DI), methylenebis(cyclohexyl isocyanate) (4,4'-, 2,4'- or 2,2'-methylenebis(cyclohexyl isocyanate) or mixtures thereof) (hydrogenated MDI), methylcyclohexane diisocyanate (methyl-2,4-cyclohexane diisocyanate, methyl-2,6-cyclohexane diisocyanate, bis(isocyanate methyl)cyclohexane (1,3- or 1,4-bis(isocyanate methyl)cyclohexane or mixtures thereof) (hydrogenated XDI), DI Monocyclic alicyclic diisocyanates such as diisocyanate merate, transcyclohexane 1,4-diisocyanate, hydrogenated tolylene diisocyanate (hydrogenated TDI), hydrogenated tetramethylxylylene diisocyanate (hydrated TMXDI); polycyclic (e.g., bridged ring) alicyclic diisocyanates such as norbornene diisocyanate, nor