US3915823A
Expired / Lapsed
US
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Benzoyl butyric acid derivates as photosensitizers for unsaturated materials
Assignee: Bayer AG
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Filing: 1974-07-10
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Granted: 1975-10-28
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Expires: 1994-07-10
Abstract
Abstract The invention relates to gamma -Hydroxy- gamma -phenyl- gamma -benzoylbutyric acids, the esters and amides thereof, which are useful photosensitisers for the photopolymerisation of polymerisable compounds or compound mixtures including mixtures of unsaturated polyesters and copolymerisable monomeric compounds.
Inventors
- 👤 Hans Rudolph
- 👤 Hans-Georg Heine
- 👤 Karl Fuhr
- 👤 Hermann Schnell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 00:59
CPC Classifications
C; C08; C08F; C08F299/00; C08F299/02; C08F299/04; C08F299/0407; C08F299/0421; C08F299/0428; C08F299/0435; C07; C07C; C07C59/00; C07C59/40; C07C59/76; C07C59/90; C08F2/00; C08F2/46; C08F283/00; C08F283/01; Y; Y10; Y10S; Y10S525/00; Y10S525/904
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
54 words
IN THE PROCESS OF PREPARING COATINGS AND MOLDED BODIES BY PHOTOPOLYMERIZING A MIXTURE OF AT LEAST ONE ETHYLENICALLY UNSATURATED POLYMERIZABLE COMPOUND AND A PHOTOSENSITIZER BY IRRADIATING SAID MIXTURE WITH A RADIATION SOURCE, THE IMPROVEMENT WHICH COMPRISES EMPLOYING 0.1 TO 5% BY WEIGHT, BASED ON SAID ETHYLENICALLY UNSATURATED COMPOUND, OF A PHOTOSENSITIZER OF THE FORMULA
Claim 2
Dependent Claim
54 words
IN THE PROCESS OF PREPARING COATINGS AND MOLDED BODIES BY PHOTOPOLYMERIZING A MIXTURE OF AT LEAST ONE ETHYLENICALLY UNSATURATED POLYMERIZABLE COMPOUND AND A PHOTOSENSITIZER BY IRRADIATING SAID MIXTURE WITH A RADIATION SOURCE, THE IMPROVEMENT WHICH COMPRISES EMPLOYING 0.1 TO 5% BY WEIGHT, BASED ON SAID ETHYLENICALLY UNSATURATED COMPOUND, OF A PHOTOSENSITIZER OF THE FORMULA
Claim 3
Dependent Claim
25 words
The process of claim 1 wherein the photosensitizer is employed in an amount of 0.5 to 2.5% by weight based on the ethylenically unsaturated compound.
Claim 4
Dependent Claim
14 words
The process of claim 1 wherein R1 and R2 of said formula are hydrogen.
Claim 5
Dependent Claim
41 words
The process of claim 1 wherein said at least one ethylenically unsaturated compound is a mixture of an unsaturated polyester which is the condensation product of an Alpha , Beta -dicarboxylic acid and a polyol and an ethylenically unsaturated copolymerizable monomer.
Claim 6
Dependent Claim
83 words
The process of claim 1 wherein each ethylenically unsaturated compound is selected from the group consisting of styrene, vinyl toluene, divinylbenzene, vinyl acetate, vinyl chloride, vinylidene chloride, vinyl methyl ketone, acrylic acid, methacrylic acid, acrylic acid methyl ester, methacrylic acid methyl ester, acrylic acid ethyl ester, methacrylic acid ethyl ester, acrylic acid allyl ester, methacrylic acid allyl ester, acrylic acid amide, methacrylic acid amide, acrylic acid nitrile, methacrylic acid nitrile, allyl acetate, phthalic acid diallyl ester, phosphoric acid triallyl ester and mixtures thereof.
Claim 7
Dependent Claim
29 words
A mixture of at least one ethylenically unsaturatated polymerizable compound and from 0.1 to 5% by weight, based on said ethylenically unsaturated compound, of a photosensitizer of the formula
Claim 8
Dependent Claim
29 words
A mixture of at least one ethylenically unsaturatated polymerizable compound and from 0.1 to 5% by weight, based on said ethylenically unsaturated compound, of a photosensitizer of the formula
Claim 9
Dependent Claim
25 words
The composition of claim 6 wherein the photosensitizer is employed in an amount of 0.5 to 2.5% by weight based on the ethylenically unsaturated compound.
Claim 10
Dependent Claim
14 words
The composition of claim 6 wherein R1 and R2 of said formula are hydrogen.
Claim 11
Dependent Claim
41 words
The composition of claim 6 wherein said at least one ethylenically unsaturated compound is a mixture of an unsaturated polyester which is the condensation product of an Alpha , Beta -dicarboxylic acid and a polyol and an ethylenically unsaturated copolymerizable monomer.
Claim 12
Dependent Claim
83 words
The composition of claim 6 wherein each ethylenically unsaturated compound is selected from the group consisting of styrene, vinyl toluene, divinylbenzene, vinyl acetate, vinyl chloride, vinylidene chloride, vinyl methyl ketone, acrylic acid, methacrylic acid, acrylic acid methyl ester, methacrylic acid methyl ester, acrylic acid ethyl ester, methacrylic acid ethyl ester, acrylic acid allyl ester, methacrylic acid allyl ester, acrylic acid amide, methacrylic acid amide, acrylic acid nitrile, methacrylic acid nitrile, allyl acetate, phthalic acid diallyl ester, phosphoric acid triallyl ester and mixtures thereof.
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) | 1978-10-27 | 1979-04-28 | 1979-10-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-10-27 | 1983-04-28 | 1983-10-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-10-27 | 1987-04-28 | 1987-10-28 | $7700.00 | Window Closed / Lapsed |