Patent US3864293A successfully refreshed from Google Patents.
US3864293A
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Photo-Degradable Styrene Resin Composition
Assignee: Sekisui Chemical Co Ltd
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Filing: 1971-08-24
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Granted: 1975-02-04
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Expires: 1991-08-24
Abstract
Abstract A photo-degradable styrene resin composition comprising a styrene resin and, incorporated therein, at least one salt of an organic carboxylic acid in an amount sufficient to exhibit a photo-degrading effect.
Inventors
- 👤 Hiroshi Miyoshi
- 👤 Hirohumi Mori
- 👤 Yoriko Tanoue
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 20:40
CPC Classifications
C; C08; C08J; C08J9/00; C08J9/0014; C08J9/0023; C08F; C08F2/00; C08K; C08K5/00; C08K5/02; C08K5/04; C08K5/07; C08K5/08; C08K5/09; C08K5/098; C08J2325/00; C08J2325/02; C08J2325/04; Y; Y10; Y10S; Y10S260/00; Y10S260/43
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
125 words
A PHOTO-DEGRADABLE STYRENE RESIN COMPOSITION COMPRISING A SYTENE-DIENE COPOLYMER OF A DIENE MONOMER CONTENT OF FROM 0.1 TO 10 % BY WEIGHT, WHEREIN SAID DIENE IS SELECTED FROM THE GROUP CONSISTING OF BUTADIENE AND ISOPRENE, AND, INCORPORATED THEREIN, AT LEAST 0.001 PARTS BY WEIGHT, PER 100 PARTS BY WEIGHT OF SAID STYRENE RESIN OF AT LEAST ONE TRANSITION METAL SALT OF AN ORGANIC CARBOXYLIC ACID, SAID TRANSITION METAL BEING SELECTED FROM THE GROUP CONSISTING OF IRON, COBALT, MANGANESE AND COPPER AND FURTHER INCLUDING, AS A PHOTO-DEGRADING ACCELERATOR, AT LEAST 0.01 PARTS BY WEIGHT, PER 100 PARTS BY WEIGHT OF SAID STYRENE RESIN OF AT LEAST ONE BROMINATED ALIPHATIC HYDROCARBON WHICH CONTAINS AT LEAST ONE CARBON ATOM TO WHICH AT LEAST TWO BROMINE ATOMS ARE BONDED.
Claim 2
Dependent Claim
125 words
A PHOTO-DEGRADABLE STYRENE RESIN COMPOSITION COMPRISING A SYTENE-DIENE COPOLYMER OF A DIENE MONOMER CONTENT OF FROM 0.1 TO 10 % BY WEIGHT, WHEREIN SAID DIENE IS SELECTED FROM THE GROUP CONSISTING OF BUTADIENE AND ISOPRENE, AND, INCORPORATED THEREIN, AT LEAST 0.001 PARTS BY WEIGHT, PER 100 PARTS BY WEIGHT OF SAID STYRENE RESIN OF AT LEAST ONE TRANSITION METAL SALT OF AN ORGANIC CARBOXYLIC ACID, SAID TRANSITION METAL BEING SELECTED FROM THE GROUP CONSISTING OF IRON, COBALT, MANGANESE AND COPPER AND FURTHER INCLUDING, AS A PHOTO-DEGRADING ACCELERATOR, AT LEAST 0.01 PARTS BY WEIGHT, PER 100 PARTS BY WEIGHT OF SAID STYRENE RESIN OF AT LEAST ONE BROMINATED ALIPHATIC HYDROCARBON WHICH CONTAINS AT LEAST ONE CARBON ATOM TO WHICH AT LEAST TWO BROMINE ATOMS ARE BONDED.
Claim 3
Dependent Claim
36 words
The composition of claim 1 wherein said brominated aliphatic hydrocarbon compound is present in the composition in an amount of from 0.01 to 10 parts by weight per 100 parts by weight of the styrene resin.
Claim 4
Dependent Claim
35 words
The composition of claim 1 wherein said brominated aliphatic hydrocarbon is a member selected from the group consisting of dibromomethane, 1,1-dibromoethane, 2,2-dibromobutane, tribromomethane, tetrabromomethane, 1,1,2,2-tetrabromoethane, hexabromoethane, 2,2-dibromopropane, 1,1,2-tribromoethane, 1,1,2-tetrabromoethane, 3,3-dibromopentane, 2,2-dibromo-4-methylpentane, 3,3-dibromoheptane, 4,4-dibromopentane and 2,2-dibromoctane.
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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) | 1978-02-03 | 1978-08-05 | 1979-02-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-02-03 | 1982-08-05 | 1983-02-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-02-03 | 1986-08-05 | 1987-02-04 | $7700.00 | Window Closed / Lapsed |