US3969323A
Expired / Lapsed
US
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Photo-crosslinkable 2-pyrone polymers and processes for the manufacture thereof
Assignee: Hoechst AG
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Filing: 1974-02-26
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Granted: 1976-07-13
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Expires: 1994-02-26
Abstract
Abstract This invention relates to a photo-crosslinkable polymer comprising units with side chains having 2-pyrone groups therein. The invention also relates to processes for the preparation of the novel photo-crosslinkable polymers and to a photo-curable copying composition including the photo-crosslinkable polymer.
Inventors
- 👤 Harald Furrer
- 👤 Hartmut Steppan
- 👤 Gerhard Lohaus
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 00:20
CPC Classifications
G; G03; G03F; G03F7/00; G03F7/004; G03F7/038; G03F7/0388; C; C08; C08F; C08F24/00; C08F8/00; C08F8/14; C08F8/16; C08G; C08G85/00; C08F2810/00; C08F2810/30; Y; Y10; Y10S; Y10S430/00; Y10S430/1053; Y10S430/1055; Y10S430/106; Y10S430/108; Y10S430/111
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
43 words
A photo-crosslinkable polymer comprising about 5 to 100 mole per cent of polymerized vinyl or vinylidene units bonded via an ester, amide, or acetal group to a radical of a 2-pyrone compound, and about 0 to 95 mole percent of non-photosensitive comonomer units.
Claim 2
Dependent Claim
43 words
A photo-crosslinkable polymer comprising about 5 to 100 mole per cent of polymerized vinyl or vinylidene units bonded via an ester, amide, or acetal group to a radical of a 2-pyrone compound, and about 0 to 95 mole percent of non-photosensitive comonomer units.
Claim 3
Dependent Claim
19 words
A photo-crosslinkable polymer which is a polyester of a polymeric polyhydroxy compound with a 2-pyrone derivative containing carboxyl groups.
Claim 4
Dependent Claim
19 words
A photo-crosslinkable polymer which is a polyester of a polymeric polyhydroxy compound with a 2-pyrone derivative containing carboxyl groups.
Claim 5
Dependent Claim
19 words
A photo-crosslinkable polymer which is a polyacetal of a polymeric polyhydroxy compound with a 2-pyrone derivative containing aldehyde groups.
Claim 6
Dependent Claim
19 words
A photo-crosslinkable polymer which is a polyacetal of a polymeric polyhydroxy compound with a 2-pyrone derivative containing aldehyde groups.
Claim 7
Dependent Claim
31 words
A polymer according to claim 1 in which the comonomer units are units of ethylene, vinyl esters, acrylic or methacrylic esters, amides or nitriles, maleic anhydride, vinyl-heterocyclic compounds, or vinyl-aromatic compounds.
Claim 8
Dependent Claim
86 words
A polymer according to claim 1 in which the units containing 2-pyrone groups have the formula ##EQU2## in which R 1 , R 2 and R 3 are hydrogen, halogen, or alkyl with 1 to 4 carbon atoms, A is one of the groups -CONH-, -COO-, -OCO-, -O-CHOH-, or -O-CH-O-, wherein each oxygen atom of the last-stated group is bonded to one unit of the base chain, B is an alkylene or alkyleneoxy group with 1 to 4 carbon atoms, and n is 0 or 1.
Claim 9
Dependent Claim
23 words
A polymer according to claim 5 in which the B group is interrupted by an oxygen or sulfur atom or a sulfonyl group.
Claim 10
Dependent Claim
31 words
A polymer according to claim 5 in which the comonomer units are units of ethylene, vinyl esters, acrylic or methacrylic esters, amides or nitriles, maleic anhydride, vinyl-heterocyclic compounds, or vinyl-aromatic compounds.
Claim 11
Dependent Claim
28 words
A polymer according to claim 7 which is a copolymer of an alkyl acrylate or alkyl methacrylate with an acrylate or methacrylate of a 2-pyrone containing hydroxyl groups.
Claim 12
Dependent Claim
25 words
A polymer according to claim 7 which is a copolymer of a vinyl compound and a vinyl ester of a 2-pyrone containing a carboxyl group.
Claim 13
Dependent Claim
14 words
A polymer according to claim 7 which is a copolymer of n-butyl-methacrylate and 4-methyl-6-methacryloyloxymethyl-pyrone-(2).
Claim 14
Dependent Claim
14 words
A polymer according to claim 7 which is a copolymer of n-hexyl-methacrylate and 4-methyl-6-methacryloyloxymethyl-pyrone-(2).
Claim 15
Dependent Claim
14 words
A polymer according to claim 7 which is a copolymer of n-hexyl-methacrylate and 4-methyl-6-methacryloyloxymethyl-pyrone-(2).
Claim 16
Dependent Claim
15 words
A polymer according to claim 7 which is a copolymer of vinyl toluene and 4-methyl-6-methacryloyloxymethyl-pyrone-(2).
Claim 17
Dependent Claim
42 words
A process for the preparation of a photo-crosslinkable polymer which comprises polymerizing a 2-pyrone compound containing a polymerizable vinyl or vinylidene group, the 2-pyrone group and the polymerizable vinyl or vinylidene group being linked together via an ester or an amide group.
Claim 18
Dependent Claim
42 words
A process for the preparation of a photo-crosslinkable polymer which comprises polymerizing a 2-pyrone compound containing a polymerizable vinyl or vinylidene group, the 2-pyrone group and the polymerizable vinyl or vinylidene group being linked together via an ester or an amide group.
Claim 19
Dependent Claim
19 words
A process according to claim 14 in which the 2-pyrone is copolymerized with a non-photosensitive polymerizable ethylenically unsaturated compound.
Claim 20
Dependent Claim
28 words
A process for the preparation of a photo-crosslinkable polymer which comprises esterifying or acetalizing a polymeric polyhydroxy compound with a 2-pyrone derivative having carboxyl or aldehyde groups, respectively.
Claim 21
Dependent Claim
28 words
A process for the preparation of a photo-crosslinkable polymer which comprises esterifying or acetalizing a polymeric polyhydroxy compound with a 2-pyrone derivative having carboxyl or aldehyde groups, respectively.
References Cited (Backward Citations)
GB908281A
Cited
US3743658A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-07-13 | 1980-01-12 | 1980-07-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-07-13 | 1984-01-12 | 1984-07-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-07-13 | 1988-01-12 | 1988-07-13 | $7700.00 | Window Closed / Lapsed |