Patent US4670528A successfully refreshed from Google Patents.
US4670528A
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Polymeric pyridinium ylides and products prepared from same
Assignee: Intellectual Ventures I LLC
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Filing: 1986-06-27
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Granted: 1987-06-02
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Expires: 2006-06-27
Abstract
Abstract Polymers containing pyridinium ylides moieties are subjected to actinic irradiation to convert the pyridinium ylide moieties to water-insoluble or hydrophobic N-acyl-diazepine polymers. The polymeric pyridinium ylides can be used for the waterproofing or hydrophobization of surfaces and for the production of printing plates, photoresistors, printed circuit boards and the like.
Inventors
- 👤 Lloyd D. Taylor
- 👤 Michael K. Haubs
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 03:04
CPC Classifications
C; C08; C08G; C08G18/00; C08F; C08F246/00; C08F20/00; C08F20/02; C08F20/10; C08F20/34; C08F20/36; C08F20/52; C08F20/54; C08F20/60; G; G03; G03F; G03F7/00; G03F7/004; G03F7/038
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
47 words
A polymeric pyridinium ylide adapted upon exposure to actinic radiation to formation of a polymeric N-acyl-diazepine, said polymeric pyridinium ylide comprising a plurality of repeating units having the formula ##STR35## wherein R is hydrogen, alkyl, aryl, alkaryl or aralkyl and R 3 is a divalent alkylene radical.
Claim 2
Dependent Claim
47 words
A polymeric pyridinium ylide adapted upon exposure to actinic radiation to formation of a polymeric N-acyl-diazepine, said polymeric pyridinium ylide comprising a plurality of repeating units having the formula ##STR35## wherein R is hydrogen, alkyl, aryl, alkaryl or aralkyl and R 3 is a divalent alkylene radical.
Claim 3
Dependent Claim
11 words
The polymeric pyridinium ylide of claim 1 wherein R is hydrogen.
Claim 4
Dependent Claim
12 words
The polymeric pyridinium ylide of claim 2 wherein R 3 is 1,2-ethylene.
Claim 5
Dependent Claim
40 words
The polymeric pyridinium ylide of claim 1 wherein said repeating units have the formula ##STR36## wherein R is hydrogen, alkyl, aryl, alkaryl or aralkyl, R 2 is hydrogen, halo or lower alkyl and R 3 is a divalent alkylene radical.
Claim 6
Dependent Claim
11 words
The polymeric pyridinium ylide of claim 4 wherein R is hydrogen.
Claim 7
Dependent Claim
12 words
The polymeric pyridinium ylide of claim 5 wherein R 3 is 1,2-ethylene.
Claim 8
Dependent Claim
12 words
The polymeric pyridinium ylide of claim 6 wherein R 2 is methyl.
Claim 9
Dependent Claim
16 words
The polymeric pyridinium ylide of claim 4 having repeating units from an ethylenically unsaturated copolymerizable monomer.
Claim 10
Dependent Claim
21 words
The polymeric pyridinium ylide of claim 8 wherein said repeating units from said ethylenically unsaturated copolymerizable monomer have the formula ##STR37##
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-06-01 | 1990-12-01 | 1991-06-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-06-01 | 1994-12-01 | 1995-06-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-06-01 | 1998-12-01 | 1999-06-02 | $7700.00 | Window Closed / Lapsed |