US2832698A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for destaticizing polymeric substances and articles thereby obtained
Assignee: Dow Chemical Co
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Filing: 1956-04-30
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Granted: 1958-04-29
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Expires: 1976-04-30
Abstract
No abstract record available.
Inventors
- 👤 Wilhelm E Walles
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 06:44
CPC Classifications
C; C08; C08J; C08J7/00; C08J7/12; C08J7/14; D; D06; D06M; D06M11/00; D06M11/51; D06M11/55; Y; Y10; Y10S; Y10S260/00; Y10S260/21; Y10S524/00; Y10S524/91; Y10S524/911; Y10S8/00; Y10S8/09; Y10S8/10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31855; Y10T428/31909; Y10T428/31913; Y10T428/31928
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
133 words
METHOD FOR DESTATICIZING HYDROPHOBIC, SUBSTITUTED, NON-AROMATIC HYDROCARBON POLYMERS AND ARTICLES MADE THEREFROM COMPRISED OF SUBSTANTIALLY LINEAR POLYMERS AND COPOLYMERS CONSISTING ESSENTIALLY OF THE POLYTHEYLENIC MOLECULAR CHAIN TO WHICH ARE ATTACHED NON-AROMATIC SUBSTITUENTS WHICH COMPRISES SUBJECTING THE SURFACE OF THE POLYMER TO A SULFONATING REAGENT WHICH IS SELECTED FROM THE GROUP CONSISTING OF CONCENTRATED SULFURIC ACID CONTAINING AT LEAST ABOUT 80 PERCENT BY WEIGHT OF H2SO4; OLEUM WHICH CONTAINS LESS THAN ABOUT 20 PERCENT BY WEIGHT OF DISSOLVED, FREE SULFUR TRIOXIDE; AND ANHYDROUS SOLUTIONS CONTAINING OLEUM WHICH, CONTAINS LESS THAN ABOUT 20 PERCENT BY WEIGHT OF DISSOLVED, FREE SULFUR TRIOXIDE; AND FREE SULFUR TRIOXIDE, AND SUBSEQUENTLY APPLYING TO THE SULFONATED SURFACE AN AGENT CONSISTING OF A HYDROPHILIC COMPOUND THAT IS FREE FROM HYDROPHONIC GROUPS AND CONTAINS A FUNCTIONAL BASIC ATOM IN ITS MOLECULAR ARRANGEMENT.
Claim 2
Dependent Claim
133 words
METHOD FOR DESTATICIZING HYDROPHOBIC, SUBSTITUTED, NON-AROMATIC HYDROCARBON POLYMERS AND ARTICLES MADE THEREFROM COMPRISED OF SUBSTANTIALLY LINEAR POLYMERS AND COPOLYMERS CONSISTING ESSENTIALLY OF THE POLYTHEYLENIC MOLECULAR CHAIN TO WHICH ARE ATTACHED NON-AROMATIC SUBSTITUENTS WHICH COMPRISES SUBJECTING THE SURFACE OF THE POLYMER TO A SULFONATING REAGENT WHICH IS SELECTED FROM THE GROUP CONSISTING OF CONCENTRATED SULFURIC ACID CONTAINING AT LEAST ABOUT 80 PERCENT BY WEIGHT OF H2SO4; OLEUM WHICH CONTAINS LESS THAN ABOUT 20 PERCENT BY WEIGHT OF DISSOLVED, FREE SULFUR TRIOXIDE; AND ANHYDROUS SOLUTIONS CONTAINING OLEUM WHICH, CONTAINS LESS THAN ABOUT 20 PERCENT BY WEIGHT OF DISSOLVED, FREE SULFUR TRIOXIDE; AND FREE SULFUR TRIOXIDE, AND SUBSEQUENTLY APPLYING TO THE SULFONATED SURFACE AN AGENT CONSISTING OF A HYDROPHILIC COMPOUND THAT IS FREE FROM HYDROPHONIC GROUPS AND CONTAINS A FUNCTIONAL BASIC ATOM IN ITS MOLECULAR ARRANGEMENT.
References Cited (Backward Citations)
US2255940A
Cited
US2400720A
Cited
USRE24062E
Cited
US2576980A
Cited
US2626876A
Cited
US2727831A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-04-28 | 1961-10-28 | 1962-04-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-04-28 | 1965-10-28 | 1966-04-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-04-28 | 1969-10-28 | 1970-04-29 | $7700.00 | Window Closed / Lapsed |