US2579492A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vulcanization of polymerized acrylic esters
Assignee: Individual
•
Filing: 1949-07-19
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Granted: 1951-12-25
•
Expires: 1969-07-19
Abstract
No abstract record available.
Inventors
- 👤 John E Hansen
- 👤 Thomas J Dietz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 13:09
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/16; C08K5/17
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
75 words
A PROCESS COMPRISING HEATING A MIXTURE CONTAINING AN AMINE SELECTED FROM THE GROUP CONSISTING OF AN UNSUBTITUTED POLYMETHYLENEDIAMINE, AN UNSUBTITUTED POLYETHYLENEAMINE, AND A MIXTURE OF THESE AMINES AS THE SOLE VULCANIZING AGENT, AND A HALOGEN-FREE POLYMERIC MATEIAL SELECTED FROM THE GROUP CONSISTING OF POLYMERIC ALKYL ACRYLATE, A COPOLYMER OF AN ALKYL ACRYLATE AND AN ALKYL METHACRYLATE, AND A COPOLYMER OF AN ALKYL ACRYLATE AND STRYENE, AT VULCANIZATION TEMPERATURE TO EFFECT VULCANIZATION OF SAID POLYMERIC MATERIAL.
Claim 2
Dependent Claim
75 words
A PROCESS COMPRISING HEATING A MIXTURE CONTAINING AN AMINE SELECTED FROM THE GROUP CONSISTING OF AN UNSUBTITUTED POLYMETHYLENEDIAMINE, AN UNSUBTITUTED POLYETHYLENEAMINE, AND A MIXTURE OF THESE AMINES AS THE SOLE VULCANIZING AGENT, AND A HALOGEN-FREE POLYMERIC MATEIAL SELECTED FROM THE GROUP CONSISTING OF POLYMERIC ALKYL ACRYLATE, A COPOLYMER OF AN ALKYL ACRYLATE AND AN ALKYL METHACRYLATE, AND A COPOLYMER OF AN ALKYL ACRYLATE AND STRYENE, AT VULCANIZATION TEMPERATURE TO EFFECT VULCANIZATION OF SAID POLYMERIC MATERIAL.
References Cited (Backward Citations)
US2451174A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-12-24 | 1955-06-25 | 1955-12-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-12-24 | 1959-06-25 | 1959-12-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-12-24 | 1963-06-25 | 1963-12-25 | $7700.00 | Window Closed / Lapsed |