US3036052A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for improving the dyestuffaffinity of copolymers of acrylonitrile
Assignee: Hoechst AG
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Filing: 1956-05-08
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Granted: 1962-05-22
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Expires: 1976-05-08
Abstract
No abstract record available.
Inventors
- 👤 Bier Gerhard
- 👤 Gumboldt Albert Gustav Martin
- 👤 Hartmann Adolf
- 👤 Happe Wilhelm
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:52
CPC Classifications
D; D06; D06P; D06P5/00; D06P5/22; C; C08; C08F; C08F8/00; D01; D01F; D01F6/00; D01F6/28; D01F6/38; D06M; D06M13/00; D06M13/244; D06M13/282; D06M13/313; D06P3/00; D06P3/70; D06P3/74
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
86 words
COPOLYMERS OF ACRYLONITRILE WITH HALOALKYL ESTERS OF VINYLPHOSPHONIC ACID, SAID ESTERS HAVING HALOALKYL GROUPS CONTAINING 1-4 CARBON ATOMS EACH, THE DYESTUFF-AFFINITY OF WHICH COPOLYMERS IS IMPROVED BY CONTACTING WITH AN AMINE AT A TEMPERATURE UP TO 120*C., WHEREBY A PART OF THE HALOGEN ATOMS IN SAID HALOALKYL GROUPS IS REPLACED BY AMINO GROUPS, SAID AMINE BEING SELECTED FROM THE GROUP CONSISTING OF PRIMARY, SECONDARY, AND TERTIARY ALKYL AMINES, PRIMARY ALKYLENE DIAMINES, ALKANOLAMINES, THIOUREA, ALKYL SUBSTITUTED THIOUREAS, MORPHOLINE, PYRIDIEN, ALKYL PYRROLIDIEN, PIPERAZINE, ETHYLENEIMINO-PROPIONITRILE, BENZAMIDAZOTHIOL, AND 2-MERCAPTO BENZOTHIALZOL.
Claim 2
Dependent Claim
86 words
COPOLYMERS OF ACRYLONITRILE WITH HALOALKYL ESTERS OF VINYLPHOSPHONIC ACID, SAID ESTERS HAVING HALOALKYL GROUPS CONTAINING 1-4 CARBON ATOMS EACH, THE DYESTUFF-AFFINITY OF WHICH COPOLYMERS IS IMPROVED BY CONTACTING WITH AN AMINE AT A TEMPERATURE UP TO 120*C., WHEREBY A PART OF THE HALOGEN ATOMS IN SAID HALOALKYL GROUPS IS REPLACED BY AMINO GROUPS, SAID AMINE BEING SELECTED FROM THE GROUP CONSISTING OF PRIMARY, SECONDARY, AND TERTIARY ALKYL AMINES, PRIMARY ALKYLENE DIAMINES, ALKANOLAMINES, THIOUREA, ALKYL SUBSTITUTED THIOUREAS, MORPHOLINE, PYRIDIEN, ALKYL PYRROLIDIEN, PIPERAZINE, ETHYLENEIMINO-PROPIONITRILE, BENZAMIDAZOTHIOL, AND 2-MERCAPTO BENZOTHIALZOL.
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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) | 1965-05-21 | 1965-11-20 | 1966-05-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-05-21 | 1969-11-20 | 1970-05-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-05-21 | 1973-11-20 | 1974-05-22 | $7700.00 | Window Closed / Lapsed |