Method for preparing a polyorganosiloxane and a polyorganosiloxane

Abstract

A polyorganosiloxane resin represented by the following general formula (5): (R 3 SiO 1/2 ) l′ (R 2 SiO 2/2 ) m′ (RSiO 3/2 ) n′ (SiO 4/2 ) o′ (5) wherein R is, independently of each other, a hydrogen atom or a monovalent hydrocarbon group having 1 to 18 carbon atoms, and optionally having an oxygen, halogen, nitrogen or sulfur atom; l′, m′ and o′ are, independently of each other, an integer of from 0 to 10,000; n′ is an integer of from 1 to 10,000; a total of l′, m′ and n′ is from 2 to 30,000; and at least one R is a hydrogen atom and at least one R is an —OX group in the molecule, wherein X is an alkyl group having 1 to 10 carbon atoms or an alkoxyalkyl group having 2 to 10 carbon atoms; and at least one hydrogen atom and at least one —OX group bond to one and the same silicon atom.

1 . A polyorganosiloxane having formula (6): 
       
         
           
           
               
               
           
         
         wherein:
 R 1  is, independently of each other, a monovalent hydrocarbon group having 1 to 18 carbon atoms, and optionally having an oxygen, halogen, nitrogen or sulfur atom; 
 R 2  is, independently of each other, a hydrogen atom or R 1 ; 
 R 3  is, independently of each other, R 1  or an —OX group; 
 X is, independently of each other, an alkyl group having 1 to 10 carbon atoms or an alkoxyalkyl group having 2 to 10 carbon atoms; 
 e is 0 or 1; 
 when e is 0, d is an integer of from 4 to 20 and d′ is 0; 
 when e is 1, d is an integer of from 1 to 20 and d′ is d; 
 p is an integer of 1 or more; and 
 the siloxane units in the square brackets may form a block structure or a random structure. 
 
       
     
     
         2 . The polyorganosiloxane according to  claim 1 , wherein R 1  is a monovalent aromatic hydrocarbon group having 6 to 18 carbon atoms. 
     
     
         3 . The polyorganosiloxane according to  claim 2 , wherein R 1  and R 2  are, independently of each other, a group selected from phenyl, benzyl, 2-phenylethyl, 2-phenylpropyl, and tolyl groups. 
     
     
         4 . The polyorganosiloxane according to  claim 1 , wherein:
 e is 0; and   p is 1.   
     
     
         5 . The polyorganosiloxane according to  claim 1 , selected from compounds having the following formulas: 
       
         
           
           
               
               
           
         
         wherein d is an integer of from 4 to 20, 
       
       
         
           
           
               
               
           
         
         wherein d is an integer of from 4 to 20, 
       
       
         
           
           
               
               
           
         
         wherein d is an integer of from 4 to 20, 
       
       
         
           
           
               
               
           
         
         wherein d is an integer of from 1 to 20, d′ is d, and p is an integer of 1 or more, and 
       
       
         
           
           
               
               
           
         
         wherein d is an integer of from 1 to 20, d′ is d, and p is an integer of 1 or more. 
       
     
     
         6 . A polyorganosiloxane having formula (9): 
       
         
           
           
               
               
           
         
         wherein:
 R 1  is, independently of each other, a monovalent hydrocarbon group having 1 to 18 carbon atoms, and optionally having an oxygen, halogen, nitrogen or sulfur atom; 
 R 2  is, independently of each other, a hydrogen atom or R 1 ; 
 R 3  is, independently of each other, R 1  or an —OX group; 
 R 5  is, independently of each other, a hydrogen atom, an alkenyl group having 2 to 10 carbon atoms, or 3-glycidyloxypropyl group, provided that, when at least one R 3  bonding to the silicon atom at the end is an —OX group, R 5  bonding to this silicon atom is not a hydrogen atom; 
 X is, independently of each other, an alkyl group having 1 to 10 carbon atoms or an alkoxyalkyl group having 2 to 10 carbon atoms; 
 t is 0 or 1; 
 s is an integer of from 1 to 20; 
 when t is 0, s′ is 0; 
 when t is 1, s′ is s; 
 q is an integer of 1 or more; and 
 the siloxane units in the square brackets may form a block structure or a random structure. 
 
       
     
     
         7 . The polyorganosiloxane according to  claim 6 , wherein:
 t is 0; and   q is 1.   
     
     
         8 . The polyorganosiloxane according to  claim 6 , wherein the polyorganosiloxane has the formula: