Gas generating agent, pressure-sensitive adhesive composition and pressure-sensitive adhesive sheet
AssigneeDai Nippon Printing Co., Ltd.
InventorsYohei Ito, Michihiro Ogura
Life of this patent
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Abstract
A gas generating agent which generates a gas by light irradiation, which has a maximum molar absorption coefficient value of 7000 or more at a wavelength of 240 nm to 450 nm, and which contains a gas generating moiety having a specific structure and an organopolysiloxane group or a fluorinated aliphatic hydrocarbon group in which a number of carbon atoms to which a fluorine atom is directly bound is from 2 to 8 and which optionally contains an ether bond (—O—) in a carbon chain.
Claims10
A gas generating agent which generates a gas by light irradiation, which has a maximum molar absorption coefficient value of 7000 or more at a wavelength of 240 nm to 450 nm, and which is represented by at least one of the following general formulae (1) and (2):
- A-L-Q1 (1)
- A-L-Q2-L-A (2)
- in the general formulae (1) and (2), each A is independently a gas generating moiety represented by the following general formula (A-1), (A-2) or (A-3);
- each L is independently a direct bond or a divalent linking group;
- Q1 is a monovalent fluorinated aliphatic hydrocarbon group in which a number of carbon atoms to which a fluorine atom is directly bound is from 2 to 8, which optionally contains an ether bond (—O—) in a carbon chain, and which optionally contains a substituent, or Q1 is a monovalent organopolysiloxane group;
- and Q2 is a divalent fluorinated aliphatic hydrocarbon group in which a number of carbon atoms to which a fluorine atom is directly bound is from 2 to 8 and which optionally contains an ether bond (—O—) in a carbon chain, or Q2 is a divalent organopolysiloxane group:
- in the general formulae (A-1), (A-2) and (A-3), R 1 is an aromatic group which contains 3 to 20 carbon atoms and which optionally contains a substituent;
- each R2 is independently a hydrogen atom or a hydrocarbon group which contains 1 to 20 carbon atoms and which optionally contains a substituent;
- each R3 is independently a hydrocarbon group which contains 1 to 20 carbon atoms and which optionally contains a substituent, a cyano group, —COOR5 or —CONR6R7;
- R4 is a hydrocarbon group which contains 1 to 20 carbon atoms and which optionally contains a substituent, a cyano group, —COOR5, —CONR6R7 or the above-described -L-Q1;
- each R5 is independently a hydrocarbon group which contains 1 to 20 carbon atoms and which optionally contains a substituent;
- each R7 is independently a hydrocarbon group which contains 1 to 20 carbon atoms and which optionally contains a substituent;
- and R6 is a hydrogen atom or a hydrocarbon group which contains 1 to 5 carbon atoms.
Dependencies are inferred from the claim text.