Patent US3980598A successfully refreshed from Google Patents.
US3980598A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mixtures based on ethylene copolymers and asphalt
Assignee: BASF SE
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Filing: 1975-08-21
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Granted: 1976-09-14
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Expires: 1995-08-21
Abstract
Abstract Mixtures of asphalt and ethylene copolymers, in which asphalts from solvent extraction processes are used as asphalt. Compared to conventional molding materials comprising mixtures of straight-run asphalts and ethylene polymers, the compositions according to the invention show no exudation of oil. The molding materials may be converted to sheeting and be used in roofing, as container lining or as pipe coating.
Inventors
- 👤 Dieter Moorwessel
- 👤 Rudolf Glaser
- 👤 Gunther Pfirrmann
- 👤 Rudolf Konopka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 18:09
CPC Classifications
C; C08; C08L; C08L95/00; C08L23/00; C08L23/02; C08L23/04; C08L23/08; C08L23/0846; C08L23/0869; C08L2205/00; C08L2205/02; C08L2205/03
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
63 words
A mixture comprising an ethylene copolymer and asphalt in a weight ratio of from 3 : 97 to 97 : 3, wherein the asphalt used is a precipitated asphalt which has a penetration, measured according to DIN 1,995, of from 0 to 8 at 25°C and a softening point, measured according to DIN 1,995 (ring and ball method), of from 50° to 85°C.
Claim 2
Dependent Claim
63 words
A mixture comprising an ethylene copolymer and asphalt in a weight ratio of from 3 : 97 to 97 : 3, wherein the asphalt used is a precipitated asphalt which has a penetration, measured according to DIN 1,995, of from 0 to 8 at 25°C and a softening point, measured according to DIN 1,995 (ring and ball method), of from 50° to 85°C.
Claim 3
Dependent Claim
23 words
A mixture as claimed in claim 1 wherein the ethylene copolymer: asphalt weight ratio is from 30 : 70 to 70 : 30.
Claim 4
Dependent Claim
43 words
A mixture as claimed in claim 1 wherein the ethylene copolymer is a copolymer of ethylene and one or more comonomers selected from vinyl esters and copolymerizable acrylic and methacrylic compounds, containing from 3 to 70 per cent by weight of comonomer units.
Claim 5
Dependent Claim
19 words
A mixture as claimed in claim 1 wherein the ethylene copolymer has a melt index of 0.1 to 20.
Claim 6
Dependent Claim
28 words
A mixture as claimed in claim 1 also containing 5 to 70 per cent by weight of a particulate filler of particle size from 0.01 to 0.09 mm.
Claim 7
Dependent Claim
24 words
A mixture as claimed in claim 5 which also includes a mineral filler of particle size greater than 0.09 mm up to 20 mm.
Claim 8
Dependent Claim
12 words
A mixture as claimed in claim 5 which contains a fibrous filler.
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) | 1979-09-14 | 1980-03-15 | 1980-09-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-09-14 | 1984-03-15 | 1984-09-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-09-14 | 1988-03-15 | 1988-09-14 | $7700.00 | Window Closed / Lapsed |