Patent ID: 11884689
Assignee: nan
Field: Semiconductors (Electrical engineering)
Classification: CPC C  H | IPC C  H

Claim 12:
13. The method of claim 1 wherein the porogen precursor is selected from the group consisting of:
a.) a substituted or unsubstituted cyclic hydrocarbon having the formula CnH2n wherein n=4 to 14,
b.) a substituted or unsubstituted hydrocarbon of the general formula CnH(2n+2)−2y wherein n=2 to 20 and y=0 to n, wherein n=4 to 14,
c.) a substituted or unsubstituted singly or multiply unsaturated cyclic hydrocarbon having the formula CnH2n−2x wherein x is the number of unsaturated sites in the molecule and n=4 to 14,
d.) a substituted or unsubstituted bicyclic hydrocarbon having the formula CnH2n−2 wherein n=4 to 14,
e.) a substituted or unsubstituted multiply unsaturated bicyclic hydrocarbon having the formula CnH2n−(2+2x), where x is the number of unsaturated sites in the molecule, and n=4 to 14, wherein the number of carbons in the bicyclic structure is between 4 and 12, and
f.) a substituted or unsubstituted tricyclic hydrocarbon having the formula CnH2n−4 where n=4 to 14, where the number of carbons in the tricyclic structure is between 4 and 12.