Curing agent composition for epoxy resins and epoxy resin composition
First Claim
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1. A curing agent composition for epoxy resins comprising the following components (A), (B) and (C):
- (A) a polyamine compound which is a reaction product of a glycidyl compound selected from the group consisting of a bisphenol A-type epoxy resin and a bisphenol F-type epoxy resin with 1,3-bis (aminomethyl)cyclohexane, wherein said glycidyl compound and 1,3-bis (aminomethyl)cyclohexane satisfy the formula [D]/[G]=20−
4, wherein [D] represents the number of active hydrogen atoms of 1,3-bis(aminomethyl)cyclohexane and [G] represents the number of epoxy groups of the glycidyl compound,(B) a polyether-modified polysiloxane having a surface tension in the range of 19.0 dyne/cm to 25.0 dyne/cm, and(C) an amino group-modified polysiloxane having a total amine value in the range of 150 mgKOH/g to 650 mgKOH/g,wherein the content of said component (B) is 0.1 to 2.0% by weight based upon the total amount of the components (A), (B) and (C), and the content of said component (C) is 0.5 to 3.0% by weight based upon the total amount of the components (A), (B) and (C).
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Abstract
The present invention relates to a curing agent composition for epoxy resins comprising (A) a polyamine compound which is a reaction product of a compound having at least one glycidyl group in a molecule with a diamine having a specific structure, (B) a polyether-modified polysiloxane having a surface tension in the range of 19 dyne/cm to 25 dyne/cm and (C) an amino group-modified polysiloxane having a total amine value in the range of 150 mgKOH/g to 650 mgKOH/g which can provide excellent curing performances, excellent performances of epoxy resin cured coating films and excellent physical properties of epoxy resin cured products, an epoxy resin composition comprising said curing agent composition for epoxy resins and an epoxy resin cured product obtained by curing said epoxy resin composition.
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Citations
15 Claims
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1. A curing agent composition for epoxy resins comprising the following components (A), (B) and (C):
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(A) a polyamine compound which is a reaction product of a glycidyl compound selected from the group consisting of a bisphenol A-type epoxy resin and a bisphenol F-type epoxy resin with 1,3-bis (aminomethyl)cyclohexane, wherein said glycidyl compound and 1,3-bis (aminomethyl)cyclohexane satisfy the formula [D]/[G]=20−
4, wherein [D] represents the number of active hydrogen atoms of 1,3-bis(aminomethyl)cyclohexane and [G] represents the number of epoxy groups of the glycidyl compound,(B) a polyether-modified polysiloxane having a surface tension in the range of 19.0 dyne/cm to 25.0 dyne/cm, and (C) an amino group-modified polysiloxane having a total amine value in the range of 150 mgKOH/g to 650 mgKOH/g, wherein the content of said component (B) is 0.1 to 2.0% by weight based upon the total amount of the components (A), (B) and (C), and the content of said component (C) is 0.5 to 3.0% by weight based upon the total amount of the components (A), (B) and (C). - View Dependent Claims (2, 3, 4)
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5. An epoxy resin composition comprising at least the following components (A), (B) and (C):
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(A) a polyamine compound which is a reaction product of a glycidyl compound selected from the group consisting of a bisphenol A-type epoxy resin and a bisphenol F-type epoxy resin with 1,3-bis (aminomethyl)cyclohexane, wherein said glycidyl compound and 1,3-bis (aminomethyl)cyclohexane satisfy the formula [D]/[G]=20−
4, wherein [D] represents the number of active hydrogen atoms of 1,3-bis(aminomethyl)cyclohexane and [G] represents the number of epoxy groups of the glycidyl compound,(B) a polyether-modified polysiloxane having a surface tension in the range of 19.0 dyne/cm to 25.0 dyne/cm, and (C) an amino group-modified polysiloxane having a total amine value in the range of 150 mgKOH/g to 650 mgKOH/g, wherein the content of said component (B) is 0.1 to 2.0% by weight based upon the total amount of the components (A), (B) and (C), and the content of said component (C) is 0.5 to 3.0% by weight based upon the total amount of the components (A), (B) and (C). - View Dependent Claims (6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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Specification
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Current AssigneeMitsubishi Gas Chemical Company Incorporated (Mitsubishi Electric Corporation)
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Original AssigneeMitsubishi Electric Corporation
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InventorsOgawa, Shun, Kuwahara, Hisayuki
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Primary Examiner(s)Eashoo, Mark
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Assistant Examiner(s)MCCULLEY, MEGAN CASSANDRA
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Application NumberUS11/637,117Publication NumberTime in Patent Office2,331 DaysField of Search525/476US Class Current525/476CPC Class CodesC08G 59/184 with aminesC08G 59/50 AminesC08L 63/00 Compositions of epoxy resin...
