US3903064A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photodegradable polymer composite
Assignee: Harima Chemicals Inc
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Filing: 1974-07-03
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Granted: 1975-09-02
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Expires: 1994-07-03
Abstract
Abstract Polymer composite comprising from 0.01 to 5 % by weight of one or more additives of a metal salt of an aromatic ketocarboxylic acid having the general formula: WHEREIN X1, X2 and X3 are selected from the group consisting of hydrogen, halogen, alkyl, hydroxyl, alkoxy, and carboxylalkyl; M is selected from the group consisting of iron, cobalt, nickel, manganese, chromium, zinc, calcium, barium, aluminum and copper, m represents an integer equal to or smaller than the valence number of the metal member, and n represents an integer between 0 and m-1, m + n being equal to the valence of the metal member. The composite is degradable in ultraviolet light or sunlight.
Inventors
- 👤 Masahisa Isigami
- 👤 Kunio Arimoto
- 👤 Masao Hamada
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 15:31
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/04; C08K5/09; C08K5/098; C08K5/07; Y; Y10; Y10S; Y10S260/00; Y10S260/43
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
143 words
A POLYMER COMPOSITE COMPRISING A POLYMER OR COPOLYMER SELECTED FROM THE GROUP CONSISTING OF POLYETHYLENE, POLYPROPLENE, POLYSTYRENE, POLYVINYL CHLORIDE, POLYVINLIDENE CHLORIDE, POLYVINYL ACETATE, AND MIXURES THEREOF, AND ONE OR MORE COMPOUNDS OF METAL SALTS OF AN AROMATIC KETOCARBOXYLIC ACID OF THE GENERAL FORMULA: ((X3,((X1,X2-PHENYL)-CO-)PHENYL)-COO-)M-M(-OH)N WHEREIN X1, X2 AND X3 ARE SELECTED FROM THE GROUP CONSISTING OF HYDROGEN,HALOGEN, ALKYL, HYDROXYL, ALKOXY, AND CARBOXYALKYL, M IS A METAL MEMBER SELECTED FROM THE GROUP CONSISTING OF IRON, COBALT, NICKEL, MANGANESE, CHROMIUM, ZINC, CALCIUM, BARIUM, ALUMINUM, AND COPPER, M REPRESENTS AN INTEGER EQUAL TO OR SMALLER THAN THE VALENCE NUMBER OF SAID METAL MEMBER, AND N REPRESENTS AN INTEGER FROM 0 TO M-1, WHEREIN M+N EQUALS THE VALENCE NUMBER OF SAID METAL MEMBER, SAID ONE OR MORE COMPOUNDS BEING IN AN AMOUNT OF FROM 0.01 TO 5.0 PERCENT BASED ON THE WEIGHT OF SAID POLYMER OR COPOLYMER.
Claim 2
Dependent Claim
143 words
A POLYMER COMPOSITE COMPRISING A POLYMER OR COPOLYMER SELECTED FROM THE GROUP CONSISTING OF POLYETHYLENE, POLYPROPLENE, POLYSTYRENE, POLYVINYL CHLORIDE, POLYVINLIDENE CHLORIDE, POLYVINYL ACETATE, AND MIXURES THEREOF, AND ONE OR MORE COMPOUNDS OF METAL SALTS OF AN AROMATIC KETOCARBOXYLIC ACID OF THE GENERAL FORMULA: ((X3,((X1,X2-PHENYL)-CO-)PHENYL)-COO-)M-M(-OH)N WHEREIN X1, X2 AND X3 ARE SELECTED FROM THE GROUP CONSISTING OF HYDROGEN,HALOGEN, ALKYL, HYDROXYL, ALKOXY, AND CARBOXYALKYL, M IS A METAL MEMBER SELECTED FROM THE GROUP CONSISTING OF IRON, COBALT, NICKEL, MANGANESE, CHROMIUM, ZINC, CALCIUM, BARIUM, ALUMINUM, AND COPPER, M REPRESENTS AN INTEGER EQUAL TO OR SMALLER THAN THE VALENCE NUMBER OF SAID METAL MEMBER, AND N REPRESENTS AN INTEGER FROM 0 TO M-1, WHEREIN M+N EQUALS THE VALENCE NUMBER OF SAID METAL MEMBER, SAID ONE OR MORE COMPOUNDS BEING IN AN AMOUNT OF FROM 0.01 TO 5.0 PERCENT BASED ON THE WEIGHT OF SAID POLYMER OR COPOLYMER.
Claim 3
Dependent Claim
14 words
The polymer composite of claim 1, wherein said polymer or copolymer is a polyolefin.
Claim 4
Dependent Claim
19 words
The polymer composite of claim 1, wherein said polymer or copolymer is a copolymer of ethylene and vinyl acetate.
Claim 5
Dependent Claim
24 words
The polymer composite of claim 1, wherein said one or more compounds is in an amount of from 0.05 to 1.0 % by weight.
Claim 6
Dependent Claim
35 words
The polymer composite of claim 1, wherein said polymer or copolymer is a polyolefin and said one or more compounds is from 0.01 to 5.0 % by weight of metal benzoyl benzoate or derivatives thereof.
References Cited (Backward Citations)
US3464953A
Cited
US3463767A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-09-01 | 1979-03-03 | 1979-09-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-09-01 | 1983-03-03 | 1983-09-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-09-01 | 1987-03-03 | 1987-09-02 | $7700.00 | Window Closed / Lapsed |