US2011152488A1PendingUtilityA1

Mononuclear star-branched polymer dielectric material

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Assignee: IND TECH RES INSTPriority: Nov 23, 2006Filed: Mar 1, 2011Published: Jun 23, 2011
Est. expiryNov 23, 2026(~0.3 yrs left)· nominal 20-yr term from priority
Inventors:Feng-Yu YangMee-Yu HsuShu-Hua ChanYu-Rung PengYu-Shen MaiWei-Yang Chou
C08F 2438/01C08F 8/12C08F 12/22C08G 83/005H10K 10/466H10K 10/471
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Claims

Abstract

A mononuclear star-branched polymer dielectric material having a repeat unit of the formula (I): A-B n   (I) wherein, A represents a multifunctional center having a functionality and a functional group with “n” arms; n is an integer greater than 2. B represents a hydrolyzed or partially hydrolyzed compound of the formula (II): wherein, X represents H or CH 3 ; R represents H, alkyl or is selected from a group consisting of acetoxyl, t-butyl, t-butyldimethyl silyl, acid labile groups and acid stable groups; “a” is an integer from 1 to 5; y and z are molar ratio and are the numbers satisfying y+z=1, 0<y≦1 and 0≦z<1.

Claims

exact text as granted — not AI-modified
1 . A mononuclear star-branched polymer dielectric material having a repeated unit of the formula (I):
   A-B n   (I)
   wherein, A represents a multifunctional center having a functionality and a functional group with “n” arms;
 n is an integer greater than 2; 
 B represents a hydrolyzed or partially hydrolyzed compound of the formula (II): 
   
       
         
           
           
               
               
           
         
         
           wherein, X represents H or CH 3 ;
 R represents H, alkyl or is selected from a group consisting of acetoxyl, t-butyl, t-butyldimethyl silyl, acid labile groups and acid stable groups; 
 “a” is an integer from 1 to 5; 
 y and z are molar ratio and are the numbers satisfying a formula y+z=1, 0<y≦1 and 0≦z<1. 
 
         
       
     
     
         2 . The mononuclear star-branched polymer dielectric material of  claim 1 , wherein molecular weight of the mononuclear star-branched polymer dielectric material is smaller than 200,000. 
     
     
         3 . The mononuclear star-branched polymer dielectric material of  claim 1 , wherein a value of n in formula (I) is between 3˜10. 
     
     
         4 . The mononuclear star-branched polymer dielectric material of  claim 1 , wherein the X in formula (II) represents H. 
     
     
         5 . The mononuclear star-branched polymer dielectric material of  claim 1 , wherein the R in formula (II) represents H. 
     
     
         6 . The mononuclear star-branched polymer dielectric material of  claim 1 , wherein, when n=3, the A in formula (I) has a following structure shown in formula (III): 
       
         
           
           
               
               
           
         
         in the formula (III), a plurality of position marked by a star is attacked to B of the formula (I). 
       
     
     
         7 . The mononuclear star-branched polymer dielectric material of  claim 1 , wherein, when n=6, A has a following structure shown in formula (IV): 
       
         
           
           
               
               
           
         
         in the formula (IV), a plurality of position marked by a star is attacked to B of the formula (I)

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