Patent US2819037A successfully refreshed from Google Patents.
Patent US4165267A successfully refreshed from Google Patents.
US4165267A
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Photo-polymerizable systems containing 2-haloacetophenone derivatives as photosensitizing agents
Assignee: Sandoz AG
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Filing: 1978-03-06
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Granted: 1979-08-21
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Expires: 1998-03-06
Abstract
Abstract The present invention concerns novel photopolymerizable formulations which comprise a photopolymerizable system in association with a photosensitizing amount of the compound of formula <IMAGE> WHEREIN R is an unsubstituted or substituted binuclear aromatic group, e.g. phenoxy phenyl, M IS 0, 1 OR 2 AND Hal is halogen.
Inventors
- 👤 Lajos Avar
- 👤 Kurt Hofer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 17:44
CPC Classifications
C; C07; C07C; C07C49/00; C07C49/76; C07C49/84; C07C49/80; C07C49/813; C08; C08F; C08F2/00; C08F2/46; C08F2/48; C08F2/50; C08F299/00; C08F299/02; C08F299/04; C08F299/0407; C08F299/0421; C08F299/0428; C08F299/0435; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31511; Y10T428/31786; Y10T428/3179; Y10T428/31855; Y10T428/3188; Y10T428/31895; Y10T428/31906
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
230 words
A photo-polymerizable composition which comprises (a) a photo-polymerizable system comprising at least one reactive unsaturated base prepolymer or long chain monomer in association with at least one unsaturated crosslinking monomer and (b) a photo-sensitizing amount of a compound of the formula ##STR46## wherein R' is a radical of the formula ##STR47## wherein X 1 is a direct covalent bond or is --O--, --S--, --SO--, --SO 2 -- or ##STR48## and either X 2 and X 3 are each hydrogen or, when X 1 is a direct covalent bond, X 2 and X 3 together may also form one of the bridge members --O--, --S--, --SO-- or --SO 2 --, R 1 , r 2 , r 4 and R 5 are, independently, hydrogen or alkyl (C 1 -C 18 ) with up to 18 carbon atoms in the aggregate of all of the substituents R 1 , R 2 , R 4 and R 5 R 3 is hydrogen, halogen or a radical ##STR49## wherein R 6 is --C(H) m (Hal) 3-m , furenyl, thienyl, phenyl or phenyl substituted by 1 alkyl (C 1 -C 4 ) or 1 or 2 halogen substituents, Hal is chlorine or bromine, and m is 0, 1 or 2, any substituents on the radical of formula aa being such that the U.V. absorption maximum of the resulting compound lies in the range 250-400 nm.
Claim 2
Dependent Claim
230 words
A photo-polymerizable composition which comprises (a) a photo-polymerizable system comprising at least one reactive unsaturated base prepolymer or long chain monomer in association with at least one unsaturated crosslinking monomer and (b) a photo-sensitizing amount of a compound of the formula ##STR46## wherein R' is a radical of the formula ##STR47## wherein X 1 is a direct covalent bond or is --O--, --S--, --SO--, --SO 2 -- or ##STR48## and either X 2 and X 3 are each hydrogen or, when X 1 is a direct covalent bond, X 2 and X 3 together may also form one of the bridge members --O--, --S--, --SO-- or --SO 2 --, R 1 , r 2 , r 4 and R 5 are, independently, hydrogen or alkyl (C 1 -C 18 ) with up to 18 carbon atoms in the aggregate of all of the substituents R 1 , R 2 , R 4 and R 5 R 3 is hydrogen, halogen or a radical ##STR49## wherein R 6 is --C(H) m (Hal) 3-m , furenyl, thienyl, phenyl or phenyl substituted by 1 alkyl (C 1 -C 4 ) or 1 or 2 halogen substituents, Hal is chlorine or bromine, and m is 0, 1 or 2, any substituents on the radical of formula aa being such that the U.V. absorption maximum of the resulting compound lies in the range 250-400 nm.
Claim 3
Dependent Claim
19 words
A composition according to claim 1 wherein at least one of the components of the polymerisable system is multi-functional.
Claim 4
Dependent Claim
25 words
A composition according to claim 1 wherein at least one of the components of the system comprises or is derived from an unsaturated carboxylic acid.
Claim 5
Dependent Claim
25 words
A composition according to claim 1 in the form of a U.V. curable coating or printing ink resin, free or substantially free of non-reactive solvent.
Claim 6
Dependent Claim
19 words
A composition according to claim 1 wherein the photo-polymerizable system is capable of polymerizing by a free radical mechanism.
Claim 7
Dependent Claim
84 words
A composition according to claim 1 wherein the reactive base prepolymer is unsaturated and is selected from the group consisting of polyethers, polyesters, polyester-based urethanes and epoxy resins or is selected from said group and is saturated or unsaturated and modified by esterification with an unsaturated carboxylic acid, the reactive base long chain monomer is an acryl derivative of an epoxylated unsaturated fatty acid and the crosslinking monomer is selected from the group consisting of vinyl and allyl monomers, acrylated alcohols and acrylated polyols.
Claim 8
Dependent Claim
24 words
A composition according to claim 1 wherein at least one component of the photo-polymerizable system is or is derived from an α,β,-unsaturated carboxylic acid.
Claim 9
Dependent Claim
26 words
A method of producing a polymer which comprises irradiating with U.V. light of wave length 250 to 400 nm. a composition in accordance with claim 1.
Claim 10
Dependent Claim
53 words
A composition according to claim 1 wherein the photosensitizing compound is of the formula ##STR50## wherein R" is a radical of the formula ##STR51## wherein X 1 ' is --O-- or --S-- and Hal, R 1 , R 2 , R 4 , R 5 and m are as defined in claim 1.
Claim 11
Dependent Claim
15 words
A composition according to claim 9 wherein the photosensitizing compound is of the formula ##STR52##
Claim 12
Dependent Claim
10 words
A polymer whenever produced by the process of claim 8.
Claim 13
Dependent Claim
28 words
A composition according to claim 1 wherein the photo-sensitizing compound is present in an amount of from 0.01 to 10% based on the weight of the photo-polymerizable system.
Claim 14
Dependent Claim
28 words
A composition according to claim 12 wherein the photosensitizing compound is present in an amount of from 0.05 to 5% based on the weight of the photo-polymerizable system.
Claim 15
Dependent Claim
28 words
A composition according to claim 10 wherein the photo-sensitizing compound is present in an amount of from 0.01 to 10% based on the weight of the photo-polymerizable system.
Claim 16
Dependent Claim
28 words
A composition according to claim 14 wherein the photosensitizing compound is present in an amount of from 0.05 to 5% based on the weight of the photo-polymerizable system.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-08-20 | 1983-02-19 | 1983-08-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-08-20 | 1987-02-19 | 1987-08-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-08-20 | 1991-02-19 | 1991-08-21 | $7700.00 | Window Closed / Lapsed |