US2585583A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydrogenated butadiene-acrylonitrile copolymer
Assignee: EIDP Inc
•
Filing: 1949-08-01
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Granted: 1952-02-12
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Expires: 1969-08-01
Abstract
No abstract record available.
Inventors
- 👤 Pinkney Paul Swithin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 15:46
CPC Classifications
C; C08; C08C; C08C19/00; C08C19/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
90 words
A POLYMERIC AMINE OF MOLECULAR WEIGHT OF FROM 500 TO 100,000 WHICH CONTAINS FROM 1.5% TO 8.5% BY WEIGHT OF NITROGEN IN THE FORM OF PRIMARY AMINO NITROGEN, WHICH IS SOLUBLE IN AQUEOUS 1%-10% ACETIC ACID, AND WHICH IS SOLUBLE IN AQUEOUS ATION PRODUCT OF A COPOLYMER OF 1,3-BUTADIENE WITH A SUBSTANCE SELECTED FROM THE GROUP CONSISTING OF ACRYLONITRILE AND METHACRYLONITRILE, SAID COPOLYMER HAVING A MOLECULAR WEIGHT NOT EXCEEDING 100,000 AND CONTAINING, ON THE BASIS BY WEIGHT OF COMBINED 1,3-BUTADIENE AND SAID SUBSTANCE, FROM 67% TO 84% OF COMBINED 1,3-BUTADIENE.
Claim 2
Dependent Claim
90 words
A POLYMERIC AMINE OF MOLECULAR WEIGHT OF FROM 500 TO 100,000 WHICH CONTAINS FROM 1.5% TO 8.5% BY WEIGHT OF NITROGEN IN THE FORM OF PRIMARY AMINO NITROGEN, WHICH IS SOLUBLE IN AQUEOUS 1%-10% ACETIC ACID, AND WHICH IS SOLUBLE IN AQUEOUS ATION PRODUCT OF A COPOLYMER OF 1,3-BUTADIENE WITH A SUBSTANCE SELECTED FROM THE GROUP CONSISTING OF ACRYLONITRILE AND METHACRYLONITRILE, SAID COPOLYMER HAVING A MOLECULAR WEIGHT NOT EXCEEDING 100,000 AND CONTAINING, ON THE BASIS BY WEIGHT OF COMBINED 1,3-BUTADIENE AND SAID SUBSTANCE, FROM 67% TO 84% OF COMBINED 1,3-BUTADIENE.
References Cited (Backward Citations)
US2456428A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-02-11 | 1955-08-13 | 1956-02-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-02-11 | 1959-08-13 | 1960-02-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-02-11 | 1963-08-13 | 1964-02-12 | $7700.00 | Window Closed / Lapsed |