US3895954A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Epoxy resin photoresist with iodoform and bismuth triphenyl
Assignee: Primerica Inc
•
Filing: 1973-06-11
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Granted: 1975-07-22
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Expires: 1993-06-11
Abstract
Abstract Photopolymerizable compositions and processes for photopolymerizing such compositions are provided, said process comprising admixing with said epoxides, photosensitive organohalogen compounds in combination with an organometallic compound and thereafter applying energy to the resulting mixture. The organohalogens decompose to liberate an active catalyst which then serves to initiate polymerization of the epoxide material. The organometallic compound functions synergistically with the organohalogen to enhance the film forming properties of the resulting polymer and or sensitivity of the polymerizable system.
Inventors
- 👤 Jerome Roteman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:40
CPC Classifications
G; G03; G03F; G03F7/00; G03F7/004; G03F7/027; G03F7/028; G03F7/029; G03F7/0295; G03F7/038; Y; Y10; Y10S; Y10S430/00; Y10S430/1053; Y10S430/1055; Y10S430/114; Y10S430/115; Y10S430/126
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
117 words
A POLYMERIZABLE COMPOSITION COMPRISING A POLYMERIZABLE MATERIAL CONSISTING ESSENTIALLY OF A MONOMERIC OR PREPOLYMERIC EPOXIDE MATERIAL OR MIXTURE THEREOF, SAID EPOXIDE MATERIAL BEING POLYMERIZABLE TO HIGHER MOLECULAR WEIGHTS THROUGH THE ACTION OF A CATIONIC CATALYST: A RADIATION-SENSITIVE CATALYST PRECURSOR WHICH DECOMPOSES UPON EXPOSURE TO ACTINIC OR ELECTRON-BEAM RADIATION TO PROVIDE AN ACTIVE CATIONIC CATALYST EFFECTIVE TO INITIATE CATIONIC 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 R3M WHEREIN M IS P, SB, AS OR BI AND R IS HYDROCARBYL RADICAL OR HYDREGEN WITH THE PROVISO THAT AT LEAST ONE R IS HYDROCARBYL RADICAL.
Claim 2
Dependent Claim
117 words
A POLYMERIZABLE COMPOSITION COMPRISING A POLYMERIZABLE MATERIAL CONSISTING ESSENTIALLY OF A MONOMERIC OR PREPOLYMERIC EPOXIDE MATERIAL OR MIXTURE THEREOF, SAID EPOXIDE MATERIAL BEING POLYMERIZABLE TO HIGHER MOLECULAR WEIGHTS THROUGH THE ACTION OF A CATIONIC CATALYST: A RADIATION-SENSITIVE CATALYST PRECURSOR WHICH DECOMPOSES UPON EXPOSURE TO ACTINIC OR ELECTRON-BEAM RADIATION TO PROVIDE AN ACTIVE CATIONIC CATALYST EFFECTIVE TO INITIATE CATIONIC 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 R3M WHEREIN M IS P, SB, AS OR BI AND R IS HYDROCARBYL RADICAL OR HYDREGEN WITH THE PROVISO THAT AT LEAST ONE R IS HYDROCARBYL RADICAL.
Claim 3
Dependent Claim
22 words
The composition of claim 1, in which said epoxide material is a glycidyl ether of bisphenol A or an epoxy phenol novolac.
Claim 4
Dependent Claim
13 words
The composition of claim 1 in which the organometallic compound is triphenyl bismuthine.
Claim 5
Dependent Claim
11 words
The composition of claim 1 in which the organohalogen is iodoform.
Claim 6
Dependent Claim
11 words
The composition of claim 3 in which the organohalogen is iodoform.
Claim 7
Dependent Claim
29 words
The composition of claim 1, in which said catalyst precursor is present in an amount by weight equal to between about 5 and 50 percent of the epoxide material.
Claim 8
Dependent Claim
45 words
The composition of claim 1, in which the catalyst precursor is present in an amount by weight equal to between about 5 and 50 percent of the epoxide material and in the relative proportions of 1 to 3 moles organometallic compound per mole of organohalogen.
Claim 9
Dependent Claim
9 words
The composition of claim 1 wherein R is phenyl.
References Cited (Backward Citations)
US3427259A
Cited
US3522194A
Cited
US3708296A
Cited
US3723634A
Cited
US3711391A
Cited
US3721617A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-07-21 | 1979-01-20 | 1979-07-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-07-21 | 1983-01-20 | 1983-07-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-07-21 | 1987-01-20 | 1987-07-22 | $7700.00 | Window Closed / Lapsed |