Epoxy resin photoresist with iodoform and bismuth triphenyl

Claim 2

A process for polymerizing a monomeric or prepolymeric epoxide material or mixtures thereof, which comprises: forming a mixture of a monomeric or prepolymeric epoxide material, or mixture thereof, polymerizable to higher molecular weights through the action of a cationic catalyst, with a radiation-sensitive catalyst precursor which decomposes upon exposure to electromagnetic or electron-beam radiation to provide an active catalyst effective to initiate polymerization of said epoxide material, said precursor being an organohalogen compound wherein the organo radicals are alkyl, aryl, alkaryl, aralkyl, alkoxy and aroxy in combination with an organometallic compound having the formula R 3 M wherein M is P, As, Sb or Bi and R is a hydrocarbyl radical or hydrogen with the proviso that at least one R is a hydrocarbyl radical; and subsequently exposing the resulting mixture to electromagnetic or electron beam radiation to release an active catalyst in sufficient amounts to effect substantial polymerization of the epoxide material.

Claim 3

The process of claim 1 in which the organometallic compound is triphenyl bismuthine.

Claim 4

The process of claim 2 in which the organohalogen is iodoform.

Claim 5

The process of claim 1, in which mixing of the epoxide, catalyst precursor and organometallic compound is effected by use of a solvent.

Claim 6

The process of claim 1, in which the mixture is exposed to electromagnetic radiation.

Claim 7

The process of claim 1, in which the mixture is exposed to electromagnetic radiation after which it is heated to an elevated temperature.

Claim 8

A process for polymerization of a monomeric or prepolymeric epoxide material which comprises: forming a mixture of a monomeric or prepolymeric epoxide material or mixture thereof, that is polymerizable to higher molecular weights through the action of a cationic catalyst, with a radiation-sensitive catalyst precursor which decomposes upon exposure to electromagnetic or electron-beam radiation to provide an active catalyst effective to initiate polymerization of said epoxide material, said precursor being an organohalogen compound wherein the organo radicals are alkyl, aryl, alkaryl, aralkyl, alkoxy and aroxy in combination with an organometallic compound having the formula R 3 M wherein M is P, As, Sb or Bi and R is a hydrocarbyl radical or hydrogen with the proviso that at least one R is a hydrocarbyl radical; Applying said mixture to a surface area; Screening predetermined portions of said surface area; exposing the unscreened surface area to electromagnetic or electron beam radiation to effect polymerization; removing said screening means; and thereafter applying a suitable solvent for removal of unpolymerized portions of said mixture.

Claim 9

A process for polymerization of a monomeric or prepolymeric epoxide material which comprises: forming a mixture of a monomeric or prepolymeric epoxide material or mixture thereof, that is polymerizable to higher molecular weights through the action of a cationic catalyst, with a radiation-sensitive catalyst precursor which decomposes upon exposure to electromagnetic or electron-beam radiation to provide an active catalyst effective to initiate polymerization of said epoxide material, said precursor being an organohalogen compound wherein the organo radicals are alkyl, aryl, alkaryl, aralkyl, alkoxy and aroxy in combination with an organometallic compound having the formula R 3 M wherein M is P, As, Sb or Bi and R is a hydrocarbyl radical or hydrogen with the proviso that at least one R is a hydrocarbyl radical; Applying said mixture to a surface area; Screening predetermined portions of said surface area; exposing the unscreened surface area to electromagnetic or electron beam radiation to effect polymerization; removing said screening means; and thereafter applying a suitable solvent for removal of unpolymerized portions of said mixture.

Claim 10

The process of claim 7 wherein the organometallic compound is triphenylbismuthine.

Claim 11

The process of claim 8 wherein the catalyst precursor is iodoform.

Claim 12

The process of claim 7 wherein the energy applied is electromagnetic radiation.

Claim 13

The process of claim 7 wherein the energy applied is electromagnetic radiation and heat.