| 摘要 |
The curable composition for encapsulating an optical semiconductor includes, a linear polyfluoro compound, a cyclic organosiloxane having a SiH group and a fluorine-containing organic group, and/or an organo hydrogen siloxane having a SiH group and a fluorine-containing organic group, a platinum group metal catalyst, a cyclic organosiloxane having a SiH group, a fluorine-containing organic group and an epoxy group, and a cyclic organopolysiloxane having a monovalent unsaturated hydrocarbon group and a fluorine-containing organic group, and a hardness of the cured product obtained by curing is 30 to 80 by Type A durometer regulated by HS K6253-3. The present invention provides a curable composition for encapsulating an optical semiconductor which gives a cured product excellent in impact resistance and adhesiveness, and an optical semiconductor apparatus in which an optical semiconductor device is encapsulated by a cured product obtained by curing the curable composition for encapsulating an optical semiconductor. |
| 主权项 |
1. A curable composition for encapsulating an optical semiconductor which comprises
(A) 100 parts by mass of a linear polyfluoro compound represented by the following formula (1),
CH2═CH—(X)a—Rf1—(X′)a—CH═CH2 (1)wherein X is a group represented by any one of —CH2—, —CH2O—, —CH2OCH2— and —Y—NR1—CO—;where Y represents —CH2— or an o-, m- or p-dimethylsilylphenylene group represented by the following structural formula (2),and R1 represents a hydrogen atom, or an unsubstituted or substituted monovalent hydrocarbon group;
X′ is a group represented by any one of —CH2—, —OCH2—, —CH2OCH2— and —CO—NR1—Y′—;
where Y′ is a group represented by any one of —CH2— or an o-, m- or p-dimethylsilylphenylene group represented by the following structural formula (3),and R1 represents the same group as mentioned above;
“a” represents independently 0 or 1; Rf1 represents a divalent perfluoropolyether group represented by the following formula (4) or (5), wherein “p” and “q” represents each an integer of 1 to 150, and an average of the sum of “p” and “q” represents 2 to 300; “r” represents an integer of 0 to 6; and t represents 2 or 3, wherein “u” represents an integer of 1 to 300; “s” represents an integer of 1 to 80; and “t” has the same meaning as defined above, (B) a cyclic organopolysiloxane represented by the following formula (6), having a hydrogen atom directly bonded to a silicon atom, and a monovalent perfluoroalkyl group or a monovalent perfluorooxyalkyl group each bonded to a silicon atom through a divalent hydrocarbon group which may contain an oxygen atom or a nitrogen atom in the molecule, and/or an organo hydrogen siloxane represented by the following formula (36), having a hydrogen atom directly bonded to a silicon atom, and a monovalent perfluoroalkyl group or a monovalent perfluorooxyalkyl group each bonded to a silicon atom through a divalent hydrocarbon group which may contain an oxygen atom or a nitrogen atom in the molecule, wherein “w” represents an integer of 3 to 6; “v” represents an integer of 1 to 4; w+v represents an integer of 4 to 10; R2 represents a substituted or unsubstituted monovalent hydrocarbon group; and A represents a monovalent perfluoroalkyl group or a monovalent perfluorooxyalkyl group each bonded to a silicon atom through a divalent hydrocarbon group which may contain an oxygen atom or a nitrogen atom, wherein J represents a divalent perfluoroalkylene group or a divalent perfluorooxyalkylene group each bonded to a silicon atom through an oxygen atom, an alkylene group, or a divalent hydrocarbon group which may contain an oxygen atom or a nitrogen atom; G independently represents a monovalent perfluoroalkyl group or a monovalent perfluorooxyalkyl group each bonded to a silicon atom through a divalent hydrocarbon group which may contain an oxygen atom or a nitrogen atom; R6 independently represents a substituted or unsubstituted monovalent hydrocarbon group; “s′” represents 0 or an integer of 1 to 3; “t′” represents 0 or an integer of 1 to 3; and s′+t′ represents an integer of 1 to 5, (C) 0.1 to 500 ppm of a platinum group metal catalyst in terms of a platinum group metal atom, (D) 0.10 to 10.0 parts by mass of a cyclic organopolysiloxane represented by the following formula (7), having a hydrogen atom directly bonded to a silicon atom, a monovalent perfluoroalkyl group or a monovalent perfluorooxyalkyl group each bonded to a silicon atom through a divalent hydrocarbon group which may contain an oxygen atom or a nitrogen atom, and an epoxy group bonded to a silicon atom through a divalent hydrocarbon group which may contain an oxygen atom in the molecule, wherein “i” represents an integer of 1 to 6; “j” represents an integer of 1 to 4; “k” is an integer of 1 to 4; i+j+k represents an integer of 4 to 10; R3 represents a substituted or unsubstituted monovalent hydrocarbon group; D represents a monovalent perfluoroalkyl group or a monovalent perfluorooxyalkyl group each bonded to a silicon atom through a divalent hydrocarbon group which may contain an oxygen atom or a nitrogen atom; and E represents an epoxy group bonded to a silicon atom through a divalent hydrocarbon group which may contain an oxygen atom, and (E) 0.10 to 70.0 parts by mass of a cyclic organopolysiloxane represented by the following formula (8), having a monovalent unsaturated hydrocarbon group directly bonded to a silicon atom, and a monovalent perfluoroalkyl group or a monovalent perfluorooxyalkyl group each bonded to a silicon atom through a divalent hydrocarbon group which may contain an oxygen atom or a nitrogen atom in the molecule, wherein “l” represents an integer of 1 to 4; “m” represents an integer of 3 to 6; l+m represents an integer of 4 to 10; R4 represents a substituted or unsubstituted monovalent hydrocarbon group; L represents a monovalent perfluoroalkyl group or a monovalent perfluorooxyalkyl group each bonded to a silicon atom through a divalent hydrocarbon group which may contain an oxygen atom or a nitrogen atom; and M represents a monovalent unsaturated hydrocarbon group directly bonded to a silicon atom, wherein the above-mentioned Component (B) is contained in such an amount that the hydrogen atom directly bonded to a silicon atom becomes 0.1 to 2.0 mole based on 1 mole of the sum of the alkenyl group of the above-mentioned Component (A) and the monovalent unsaturated hydrocarbon group of the above-mentioned Component (E), and a hardness of a cured product obtained by curing the composition is a value of 30 to 80 by Type A durometer regulated by JIS K6253-3. |
