Patent US4416668A successfully refreshed from Google Patents.
US4416668A
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Antistatic agents for organic liquids
Assignee: Baker Petrolite LLC
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Filing: 1982-06-04
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Granted: 1983-11-22
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Expires: 2002-06-04
Abstract
Abstract This invention relates to imides of α-olefin-maleic copolymers and to blends of imides of α-olefin-maleic copolymer and α-olefin-sulfur dioxide copolymers; and to systems, such as hydrocarbon fuels, containing such compositions as antistatic agents.
Inventors
- 👤 Neil E. S. Thompson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 22:24
CPC Classifications
C; C10; C10L; C10L1/00; C10L1/10; C10L1/14; C10L1/146; C10L1/22; C10L1/234; C10L1/236; C10L1/2364; C10L1/24; C10L1/2462; C10L1/2468; Y; Y10; Y10S; Y10S260/00; Y10S260/15; Y10S260/17
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
67 words
An antistatic composition comprising an organic fluid containing an antistatic amount, in the concentration of 1 to 10 parts per million, of an antistatic agent consisting of (1) a polymer containing α-olefin units selected from the group consisting of 1-decene, 1-dodecene, 1-tetradecene and 1-octadecene units and maleimide units and (2) a 1-decene-SO 2 copolymer, the ratio of maleimide copolymer to SO 2 copolymer being 100:1 to 1:100.
Claim 2
Dependent Claim
67 words
An antistatic composition comprising an organic fluid containing an antistatic amount, in the concentration of 1 to 10 parts per million, of an antistatic agent consisting of (1) a polymer containing α-olefin units selected from the group consisting of 1-decene, 1-dodecene, 1-tetradecene and 1-octadecene units and maleimide units and (2) a 1-decene-SO 2 copolymer, the ratio of maleimide copolymer to SO 2 copolymer being 100:1 to 1:100.
Claim 3
Dependent Claim
13 words
The polymer of claim 1 where the imide is derived from a diamine.
Claim 4
Dependent Claim
14 words
The polymer of claim 2 where the diamine has a sterically hindered amino group.
Claim 5
Dependent Claim
18 words
The polymer of claim 3 where the diamine has the formula ##STR18## where N is an amino group.
Claim 6
Dependent Claim
17 words
The antistatic composition of claim 1 wherein the maleimide polymer also contains acid, ester, and/or amide groups.
Claim 7
Dependent Claim
14 words
The antistatic composition of claim 1 where the antistatic agent is a 1-tetradecene-maleimide copolymer.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-11-21 | 1987-05-23 | 1987-11-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-11-21 | 1991-05-23 | 1991-11-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-11-21 | 1995-05-23 | 1995-11-22 | $7700.00 | Window Closed / Lapsed |