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US3887520A
Expired / Lapsed
US
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Stabilized polyamide composition
Assignee: Honeywell International Inc
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Filing: 1974-01-30
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Granted: 1975-06-03
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Expires: 1994-01-30
Abstract
Abstract A polyamide composition containing a) 2-mercaptobenzimidazol, b) 2-mercaptobenzimidazol copper salt and/or organic acid copper salt and one or more magnesium compounds from the group c) 8hydroxyquinoline magnesium salt, magnesium salt of a) and an organic acid magnesium salt, is disclosed.
Inventors
- 👤 Kiyoaki Nishijima
- 👤 Atsuo Tanaka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 21:08
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/16; C08K5/34; C08K5/3412; C08K5/3432; C08K5/3437; C08K5/04; C08K5/09; C08K5/36; C08K5/37
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
108 words
In a composition consisting essentially of a polyamide, containing, based on the weight of said polyamide, a. from about 0.01 weight percent to about 5 weight percent 2-mercaptobenzimidazol, and b. from about 10 parts per million to about 500 parts per million, analyzed as copper metal, of a compound selected from the group consisting of the copper salt of 2-mercaptobenzimidazol and an organic acid copper salt, the improvement comprising said polyamide also containing c. from about 5 parts per million to about 150 parts per million, analyzed as magnesium metal, of a compound selected from the group consisting of the magnesium salt of 2-mercaptobenzimidazol, and 8-hydroxyquinoline magnesium salt.
Claim 2
Dependent Claim
108 words
In a composition consisting essentially of a polyamide, containing, based on the weight of said polyamide, a. from about 0.01 weight percent to about 5 weight percent 2-mercaptobenzimidazol, and b. from about 10 parts per million to about 500 parts per million, analyzed as copper metal, of a compound selected from the group consisting of the copper salt of 2-mercaptobenzimidazol and an organic acid copper salt, the improvement comprising said polyamide also containing c. from about 5 parts per million to about 150 parts per million, analyzed as magnesium metal, of a compound selected from the group consisting of the magnesium salt of 2-mercaptobenzimidazol, and 8-hydroxyquinoline magnesium salt.
Claim 3
Dependent Claim
108 words
IN A COMPOSITION CONSISTING ESSENTIALLY OF A POLYAMIDE, CONTAINING, BASED ON THE WEIGHT OF SAID POLYAMIDE, A. FROM ABOUT 0.01 WEIGHT PERCENT TO ABOUT 5 WEIGHT PERCENT 2-MERCAPTOBENZIMIDAZOL, AND B. FROM ABOUT 10 PARTS PER MILLION TO ABOUT 500 PARTS PER MILLION, ANALYZED AS COPPER METAL, OF A COMPOUND SELECTED FROM THE GROUP CONSISTING OF THE COPPER SALT OF 2MERCAPTOBENZIMIDAZOL AND AN ORGANIC ACID COPPER SALT, THE IMPROVEMENT COMPRISING SAID POLYAMIDE ALSO CONTAINING C. FROM ABOUT 5 PARTS PER MILLION TO ABOUT 150 PARTS PER MILLION, ANALYZED AS MAGNESIUM METAL, OF A COMPOUND SELECTED FROM THE GROUP CONSISTING OF THE MAGNESIUM SALT OF 2-MERCAPTOBENZIMIDAZOL, AND 8-HYDROXYQUINOLINE MAGNESIUM SALT.
Claim 4
Dependent Claim
108 words
IN A COMPOSITION CONSISTING ESSENTIALLY OF A POLYAMIDE, CONTAINING, BASED ON THE WEIGHT OF SAID POLYAMIDE, A. FROM ABOUT 0.01 WEIGHT PERCENT TO ABOUT 5 WEIGHT PERCENT 2-MERCAPTOBENZIMIDAZOL, AND B. FROM ABOUT 10 PARTS PER MILLION TO ABOUT 500 PARTS PER MILLION, ANALYZED AS COPPER METAL, OF A COMPOUND SELECTED FROM THE GROUP CONSISTING OF THE COPPER SALT OF 2MERCAPTOBENZIMIDAZOL AND AN ORGANIC ACID COPPER SALT, THE IMPROVEMENT COMPRISING SAID POLYAMIDE ALSO CONTAINING C. FROM ABOUT 5 PARTS PER MILLION TO ABOUT 150 PARTS PER MILLION, ANALYZED AS MAGNESIUM METAL, OF A COMPOUND SELECTED FROM THE GROUP CONSISTING OF THE MAGNESIUM SALT OF 2-MERCAPTOBENZIMIDAZOL, AND 8-HYDROXYQUINOLINE MAGNESIUM SALT.
Claim 5
Dependent Claim
25 words
The polyamide composition of claim 1 wherein the 2-mercaptobenzimidazol is present in an amount of from about 0.1 weight percent to About 2 weight percent.
References Cited (Backward Citations)
US3280053A
Cited
US3516956A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-06-02 | 1978-12-02 | 1979-06-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-06-02 | 1982-12-02 | 1983-06-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-06-02 | 1986-12-02 | 1987-06-03 | $7700.00 | Window Closed / Lapsed |