US4038258A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Antistatic composition containing an aliphatic polyester or polyether ester and a phosphonium salt
Assignee: EIDP Inc
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Filing: 1976-10-22
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Granted: 1977-07-26
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Expires: 1996-10-22
Abstract
Abstract Conductive compositions useful in imparting antistatic properties in filaments and other articles are provided, which comprise N-alkyl polycarbonamides, polyesters or polyetheresters having a Tg (NMR) less than 25° C and from 0.02 to 35 weight percent of a phosphonium salt of a phosphonate, phosphinate, or sulfonate.
Inventors
- 👤 Gurdial Singh
- 👤 Richard Edward VON Rutte
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 16:25
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/49; C08K5/50; C08K5/51; C08K5/53; D; D01; D01F; D01F1/00; D01F1/02; D01F1/09; D01F6/00; D01F6/58; D01F6/60; D01F6/62; D01F6/78; D01F6/86; D01D; D01D5/00; D01D5/253; D01F8/00; D01F8/04; D01F8/14; Y; Y10; Y10S; Y10S260/00; Y10S260/15; Y10S260/16; Y10S260/19; Y10S524/00; Y10S524/91; Y10S524/911; Y10S524/912; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2929; Y10T428/2933; Y10T428/2964; Y10T428/2967; Y10T428/2969
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
124 words
An antistatic composition having a log R s of less than 8 and consisting essentially of a polyether-ester or aliphatic polyester having a T g (NMR) of less than 25° C. and from 0.02 to 35 weight percent based on the weight of the composition of a phosphonium salt of the formula [R.sub.1 R.sub.2 R.sub.3 R.sub.4 P.sup.+].sub.n X.sup.n.sup.- where R 1 R 2 R 3 and R 4 each represents a monovalent hydrocarbon group of from 1-18 carbon atoms; X n - is an organic anion selected from the group of ##STR2## wherein Ar is an aromatic hydrocarbon radical; R is an aliphatic or an aromatic hydrocarbon radical; m is 1 or 2; and n, the valence of the anion, is 1 or 2.
Claim 2
Dependent Claim
124 words
An antistatic composition having a log R s of less than 8 and consisting essentially of a polyether-ester or aliphatic polyester having a T g (NMR) of less than 25° C. and from 0.02 to 35 weight percent based on the weight of the composition of a phosphonium salt of the formula [R.sub.1 R.sub.2 R.sub.3 R.sub.4 P.sup.+].sub.n X.sup.n.sup.- where R 1 R 2 R 3 and R 4 each represents a monovalent hydrocarbon group of from 1-18 carbon atoms; X n - is an organic anion selected from the group of ##STR2## wherein Ar is an aromatic hydrocarbon radical; R is an aliphatic or an aromatic hydrocarbon radical; m is 1 or 2; and n, the valence of the anion, is 1 or 2.
Claim 3
Dependent Claim
14 words
The composition of claim 1 wherein the phosphonium salt is a phosphonium aryl sulfonate.
Claim 4
Dependent Claim
14 words
The composition of claim 1 wherein the phosphonium salt is tetra-n-butyl phosphonium diphenyl phosphinate.
References Cited (Backward Citations)
US3039998A
Cited
US3496147A
Cited
US3514498A
Cited
US3637552A
Cited
US3696078A
Cited
US3732183A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-07-25 | 1981-01-24 | 1981-07-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-07-25 | 1985-01-24 | 1985-07-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-07-25 | 1989-01-24 | 1989-07-26 | $7700.00 | Window Closed / Lapsed |