Patent ID: 7108807

Claim:
A method of forming a dielectric, which comprises: providing a polybenzoxazole of Formula III where Z 1 has a formula selected from the group consisting of wherein E 1 and E 2 are substituents in each case independently selected from the group consisting of: in the case when at least one of a and d=0 in the case when at least one of a and d=1, otherwise, E1 and E2 are substituents in each case independently selected from the group consisting of a saturated monovalent hydrocarbon, and an unsaturated monovalent hydrocarbon, wherein R 8 is selected from the group consisting of: wherein: h=0–10, and Q=*—O—*, *—S—*, *—NH—*, Y 1 and Y 2 , in each case independently for each position, are a divalent hydrocarbon; Z 2 , in each case independently for each position, is a tetravalent hydrocarbon composed of groups linked to one another and selected from the group consisting of alkyl and aryl groups; R 1 , R 2 , R 3 , and R 4 , in each case independently, are substitutents selected from the group consisting of H, —C 6 H 5 , —(CH 2 ) n —CH3, -G-(CH 2 ) n—CH 3, CH((CH 2 ) n CH 3 ) 2 , —CH(CH 3 ) 2 , -G-CH(CH 3 ) 2 , —C(CH 3 ) 3 ,. -G-C(CH 3 ) 3 , —(CF 2 ) n —CF 3 , -G-(CF 2 ) n —CF 3 , —CF((CF 2 ) n CF 3 ) 2 , —CF(CF 3 ) 2 , —C(CF 3 ) 3 , —N(CH 3 ) 2 , —N(CF 3 ) 2 , R 5 , in each case independently, is a substituent selected from the group consisting of H, —CO(CH 2 ) n —CH3, —COO—(CH 2 ) n —CH 3 , —(CH 2 ) n —CH3, —CH(CH 2 ) n CH 3 ) 2 , —CH(CH 3 ) 2 , —C(CH 3 ) 3 , —(CF 2 ) n —CF 3 , —CF((CF 2 ) n CF 3 ) 2 , —CF(CF 3 ) 2 , —C(CF 3 ) 3 , —(CH 2 ) n —C 6 H 5 , z—COO—(CH 2 ) n —C 6 H 5 ; G is a heteroatom selected from the group consisting of oxygen and sulfur; a is an integer from 0 to 1; b has a value from 1 to 200; c has a value from 0 to 200; and d is an integer from 0 to 1; and n is an integer from 0 to 10.