US4414344A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Modified synthetic plastic from thermoplastic synthetics and coal hydrogenation residues
Assignee: Bergwerksverband GmbH
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Filing: 1982-02-12
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Granted: 1983-11-08
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Expires: 2002-02-12
Abstract
Abstract Synthetic plastic materials for the manufacture of extrusion, injection and press forms are described, which are prepared from elastomers as well as mixed- and copolymers thereof with thermoplastic properties and liquification products from extractive coal hydrogenation which are residues with a softening point between 50° and 150° C. Polar, aromatic or cyclic groups in the elastomer component increase the compatibility of the coal liquification residue with the elastomer and improve the mechanical properties of the products.
Inventors
- 👤 Ingo Romey
- 👤 Menachem El-Roy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 01:26
CPC Classifications
C; C08; C08L; C08L33/00; C08L33/18; C08L33/20; C08L21/00; C08L27/00; C08L27/02; C08L27/04; C08L27/06; C08L31/00; C08L31/02; C08L31/04; C08L9/00; C08L9/02; C08L9/06; C08L97/00; C08L97/002; C08L95/00
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
63 words
A synthetic plastic composition comprising a mixture of (1) at least one elastomeric compound having thermoplastic properties and containing at least one polar, aromatic or cyclic group, and (2) 50 to 70 weight percent of a low boiling carbonaceous material obtained from the liquefaction of coal having a softening point between 50° and 150° C. which has been freed of solid, non-melting components.
Claim 2
Dependent Claim
63 words
A synthetic plastic composition comprising a mixture of (1) at least one elastomeric compound having thermoplastic properties and containing at least one polar, aromatic or cyclic group, and (2) 50 to 70 weight percent of a low boiling carbonaceous material obtained from the liquefaction of coal having a softening point between 50° and 150° C. which has been freed of solid, non-melting components.
Claim 3
Dependent Claim
11 words
A synthetic plastic composition according to claim 1, containing a softener.
Claim 4
Dependent Claim
19 words
A synthetic plastic composition according to claim 2 wherein said softener is a mineral oil or an aryl ester.
Claim 5
Dependent Claim
11 words
A synthetic plastic composition according to claim 1 containing a filler.
Claim 6
Dependent Claim
27 words
A synthetic plastic composition according to claim 4 wherein said low boiling carbonaceous material and said filler comprise 40 to 80 weight percent of the total composition.
Claim 7
Dependent Claim
22 words
A synthetic plastic composition according to claim 1 wherein said elastomeric compound comprises 20 to 40 weight percent of the total composition.
Claim 8
Dependent Claim
18 words
A synthetic plastic composition according to claim 1 wherein the elastomeric component is a mixture of elastomeric compounds.
References Cited (Backward Citations)
US4204986A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-11-07 | 1987-05-09 | 1987-11-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-11-07 | 1991-05-09 | 1991-11-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-11-07 | 1995-05-09 | 1995-11-08 | $7700.00 | Window Closed / Lapsed |