Fixing material comprising silane compound polymer and photonic device sealed body

Abstract

A fixing material includes a silane compound polymer as the main component, the silane compound polymer being produced by condensing a silane compound mixture that includes at least one silane compound (1) shown by the following formula (1): R 1 Si(OR 2 ) p (X 1 ) 3-p (wherein R 1 represents a group including an ester structure or a cyanoalkyl group, R 2 represents an alkyl group having 1 to 6 carbon atoms or the like, X 1 represents a halogen atom, and p is an integer from 0 to 3), and at least one silane compound (2) shown by the following formula (2): Si(OR 3 ) q (X 2 ) 4-q (wherein R 3 represents an alkyl group having 1 to 6 carbon atoms, X 2 represents a halogen atom, and q is an integer from 0 to 4). A sealed optical device includes an optical device that is sealed with a cured product of the fixing material. The fixing material produces a cured product that exhibits high hardness, excellent transparency and heat resistance, and rarely undergoes coloration even when subjected to high-energy light or heat for a long time.

1 . A fixing material comprising a silane compound polymer as the main component, the silane compound polymer being produced by condensing a silane compound mixture that includes at least one silane compound (1) shown by the following formula (1): R 1 Si(OR 2 ) p (X 1 ) 3-p , wherein R 1  represents a group including an ester structure or a cyanoalkyl group, R 2  represents an alkyl group having 1 to 6 carbon atoms, an alkoxyalkyl group having 2 to 10 carbon atoms, or a group shown by Si(R a )(R b )(R c ), wherein R a , R b , and R c  individually represent a hydrogen atom, an alkyl group having 1 to 6 carbon atoms, an aryl group, or a halogen atom, provided that at least one of R a , R b , and R c  represents a halogen atom when p is 3 and all of R 2  represent the group shown by Si(R a )(R b )(R c ), X 1  represents a halogen atom, and p is an integer from 0 to 3, and at least one silane compound (2) shown by the following formula (2): Si(OR 3 ) q (X 2 ) 4-q , wherein R 3  represents an alkyl group having 1 to 6 carbon atoms, X 2  represents a halogen atom, and q is an integer from 0 to 4. 
     
     
         2 . The fixing material according to  claim 1 , wherein the molar ratio of the silane compound (1) to the silane compound (2) included in the silane compound mixture is 50:50 to 98:2. 
     
     
         3 . The fixing material according to  claim 1 , wherein the silane compound mixture further includes at least one silane compound (3) shown by the following formula (3): R 4 Si(OR 5 ) r (X 3 ) 3-r , wherein R 4  represents a phenyl group that may have a substituent (excluding a group that includes an ester structure), an alkyl group having 1 to 20 carbon atoms that may have a substituent (excluding a group that includes an ester structure and a cyano group), or an alkenyl group having 2 to 20 carbon atoms, R 5  represents an alkyl group having 1 to 6 carbon atoms, X 3  represents a halogen atom, and r is an integer from 0 to 3. 
     
     
         4 . The fixing material according to  claim 3 , wherein the molar ratio of the total amount of the silane compound (1) and the silane compound (2) to the silane compound (3) included in the silane compound mixture is 90:10 to 10:90. 
     
     
         5 . The fixing material according to  claim 1 , wherein the silane compound polymer has a weight average molecular weight of 1000 to 10,000. 
     
     
         6 . The fixing material according to  claim 1 , the fixing material not including a curing agent. 
     
     
         7 . The fixing material according to  claim 1 , the fixing material being used as a sealing material. 
     
     
         8 . The fixing material according to  claim 7 , the fixing material being used as an optical device sealing material. 
     
     
         9 . The fixing material according to  claim 1 , the fixing material being used as an adhesive. 
     
     
         10 . A sealed optical device comprising an optical device, and a cured product of the fixing material according to  claim 8 , the optical device being sealed with the cured product.