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US3882084A Expired / Lapsed US ⏱️ 0.0 years remaining

Optically cross-linkable polymer

Assignee: National Institute of Advanced Industrial Science and Technology
•
Filing: 1972-06-08
•
Granted: 1975-05-06
•
Expires: 1992-06-08
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Abstract

Abstract A composition is produced by combining one or more members selected from the group consisting of cinnamic acid-vinylphenyl ester, cinnamic acid-isoalkenylphenyl ester, and homologs thereof, styrylacrylic acid-vinylphenyl ester, styrylacrylic acidisoalkenylphenyl ester and homologs thereof with a cationic polymerization catalyst. This composition is polymerized or copolymerized to form a novel photosensitive product. The product thus obtained is a linear polymer or copolymer in which only the vinyl group or isoalkenyl group is polymerized and the photosensitive group is quantitatively retained in the side chain. The polymer of copolymer has a high degree of photosensitivity and permits photosensitizing reaction to occur uniformly.

Inventors

  • 👤 Masao Tato
  • 👤 Masaki Hasegawa
  • 👤 Taro Ichijyo

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-28 01:38
CPC Classifications
G; G03; G03F; G03F7/00; G03F7/004; G03F7/038; G03F7/0388; C; C08; C08F; C08F2/00

Claims Analysis

Total Claims: 8
Claim 1
Independent Claim 18 words
A PHOTOSENSITIVE HOMOPOLYMER HAVING A CHAIN FORMED BY POLYMERIZING THE CH2=CX GROUP OF A MONOMER OF THE FORMULA
Claim 2
Dependent Claim 18 words
A PHOTOSENSITIVE HOMOPOLYMER HAVING A CHAIN FORMED BY POLYMERIZING THE CH2=CX GROUP OF A MONOMER OF THE FORMULA
Claim 3
Dependent Claim 22 words
A photosensitive copolymer having a chain formed by polymerizing the CH2 CX group of at least two different monomers of the formula
Claim 4
Dependent Claim 22 words
A photosensitive copolymer having a chain formed by polymerizing the CH2 CX group of at least two different monomers of the formula
Claim 5
Dependent Claim 23 words
A photosensitive copolymer having a chain formed by polymerizing the CH2 CX group of at least one photosensitive monomer (1) of the formula
Claim 6
Dependent Claim 23 words
A photosensitive copolymer having a chain formed by polymerizing the CH2 CX group of at least one photosensitive monomer (1) of the formula
Claim 7
Dependent Claim 36 words
The photosensitive copolymer of chain 3 wherein at least one of the monomers of (2) is selected from the group consisting of alkylvinyl ethers, alkylisoalkenylvinyl ethers, olefins, alkylstyrenes, halostyrenes, vinyl carbazole, vinyldioxolanes, dialkoxyethylene, butadiene and isoprene.
Claim 8
Dependent Claim 36 words
The photosensitive copolymer of chain 3 wherein at least one of the monomers of (2) is selected from the group consisting of alkylvinyl ethers, alkylisoalkenylvinyl ethers, olefins, alkylstyrenes, halostyrenes, vinyl carbazole, vinyldioxolanes, dialkoxyethylene, butadiene and isoprene.

References Cited (Backward Citations)

US2934526A Cited
US3364282A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1978-05-05 1978-11-04 1979-05-06 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1982-05-05 1982-11-04 1983-05-06 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1986-05-05 1986-11-04 1987-05-06 $7700.00 Window Closed / Lapsed

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