US4798686A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Organic polymers with electrical properties
Assignee: Bayer AG
•
Filing: 1986-11-18
•
Granted: 1989-01-17
•
Expires: 2006-11-18
Abstract
Abstract Organic polymers, for example thermoplastics, thermosetting resins, elastomers or lacquers with increased electrical conductivity, characterized by a content of sulphur-containing pyropolymers which have been obtained by pyrolysis of sulphur-containing condensation products of aromatic compounds, which optionally contain hereto-cyclic rings with O, S or N as hetero-atoms and, sulphur or sulphur releasing compounds.
Inventors
- 👤 Jurgen Hocker
- 👤 Ludwig Rottmaier
- 👤 Klaus Reinking
- 👤 Jurgen Kirsch
- 👤 Heinz-Josef Fullmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 07:36
CPC Classifications
H; H01; H01B; H01B1/00; H01B1/06; H01B1/12; H01B1/124
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
55 words
An electrically conductive organic polymer comprising an organic polymer selected from thermoplastics, thermosetting resins, elastomers and lacquers and 5-80% by weight based on the total weight of the electrically conductive polymer of a sulfur-containing pyropolymer wherein said pyropolymer is obtained by pyrolysis of a sulfur-containing condensation product of aromatic compounds and sulfur or sulfur-releasing compounds.
Claim 2
Dependent Claim
55 words
An electrically conductive organic polymer comprising an organic polymer selected from thermoplastics, thermosetting resins, elastomers and lacquers and 5-80% by weight based on the total weight of the electrically conductive polymer of a sulfur-containing pyropolymer wherein said pyropolymer is obtained by pyrolysis of a sulfur-containing condensation product of aromatic compounds and sulfur or sulfur-releasing compounds.
Claim 3
Dependent Claim
21 words
An organic polymer according to claim 1, wherein said aromatic compounds contain heterocyclic rings with O, S or N as hetero-atoms.
Claim 4
Dependent Claim
23 words
The organic polymer of claim 1, wherein the content of the sulphur-containing pyropolymer is 10-70% by weight, based on the conductive organic polymer.
Claim 5
Independent Claim
61 words
A method of increasing the electrical conductivity of organic polymers comprising incorporating into an organic polymer selected from thermoplastics, thermosetting resins, elastomers and lacquers 5-80% by weight based on the total weight of the electrically conductive polymer of a sulfur-containing pyropolymer wherein said pyropolymer is obtained by pyrolysis of a sulfur-containing condensation product of aromatic compounds and sulfur or sulfur-releasing compounds.
Claim 6
Independent Claim
61 words
A method of increasing the electrical conductivity of organic polymers comprising incorporating into an organic polymer selected from thermoplastics, thermosetting resins, elastomers and lacquers 5-80% by weight based on the total weight of the electrically conductive polymer of a sulfur-containing pyropolymer wherein said pyropolymer is obtained by pyrolysis of a sulfur-containing condensation product of aromatic compounds and sulfur or sulfur-releasing compounds.
Claim 7
Dependent Claim
20 words
A method according to claim 14, wherein said aromatic compounds contain heterocyclic rings with O, S or N as hetero-atoms.
Claim 8
Dependent Claim
29 words
A method according to claim 14, wherein the sulphur-containing pyropolymer is incorporated into the organic polymer in a quantity of 10-70% by weight, based on the conductive organic polymer.
References Cited (Backward Citations)
US4375427A
Cited
EP0034300A1
Cited
EP0039829A1
Cited
US4397971A
Cited
EP0131189A2
Cited
DE3324768A1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-01-17 | 1992-07-18 | 1993-01-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-01-17 | 1996-07-18 | 1997-01-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-01-17 | 2000-07-18 | 2001-01-17 | $7700.00 | Window Closed / Lapsed |