Patent ID: 8398885

Claim:
A porous layer of dielectric having a low dielectric constant k obtained from at least one matrix precursor and at least one organic precursor, characterized in that the porous layer of dielectric is composed of a) a plurality of first volumes comprising solid matter made from a matrix precursor, b) a plurality of second volumes that do not comprise solid matter made and c) a plurality of third volumes, positioned between at least one first volume and at least one second volume and representing less than 1% of the total volume of the porous layer, d) wherein the plurality of third volumes are formed from an organic precursor comprising: A) 6,6-dimethyl-2-(hydroxymethyl)bicyclo[3.1.1]hept-2-ene, B) myrtenol; C) a positional isomer of Myrtenol; or D) derivatives of Myrtenol in which at least one of the terminal methyls and/or hydrogen is replaced by an R group, each R being independently chosen from H or linear or branched C 1 -C 5 alkyls, e) wherein the dielectric constant of said porous of said porous layer is less than or equal to 2.5.