US3673141A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Molding material based on bitumen
Assignee: BASF SE
•
Filing: 1969-10-29
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Granted: 1972-06-27
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Expires: 1989-10-29
Abstract
Abstract Molding material comprising (a) a specially selected bitumen left as a residue in the distillation of petroleum which has been deacidified with calcium hydroxide and (b) an olefin polymer. The molding material may be pigment-colored and is used in the form of sheeting for insulation in construction.
Inventors
- 👤 Hans-Georg Trieschmann
- 👤 Leo Unterstenhoefer
- 👤 Heinz Berbner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 15:47
CPC Classifications
C; C08; C08L; C08L23/00; C08L23/02; C08L23/04; C08L23/08; C08L23/0846; C08L23/0853; C08L95/00
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
31 words
A composition of matter as claimed in claim 1 which also contains a filler in an amount of up to 50 percent by weight with reference to components (a) and (b).
Claim 2
Dependent Claim
10 words
16 to 25 percent by weight of bituminous naphthenic hydrocarbons;
Claim 3
Dependent Claim
15 words
27 to 45 percent by weight of calcium salts of naphthenic acids and sulfonic acids;
Claim 4
Dependent Claim
39 words
A composition of matter as claimed in claim 1 in which component (b) is a copolymer of 30 to 97 percent by weight of ethylene and 70 to 3 percent by weight of an acrylic C1 to C4 ester.
Claim 5
Dependent Claim
34 words
A composition of matter as claimed in claim 1 wherein component (b) is a copolymer of 30 to 97 percent by weight of ethylene and 70 to 3 percent by weight of vinyl acetate.
Claim 6
Dependent Claim
13 words
11 to 20 percent by weight of calcium hydroxide and calcium sulfate; and
Claim 7
Dependent Claim
71 words
0.5 to 5 percent by weight of sulfur; and b. 25 to 200 parts by weight of a homopolymer of ethylene or propylene or a copolymer of 30 to 97 percent by weight of ethylene and 70 to 3 percent by weight of one of the compounds: vinyl acetate, vinyl propionate, and a C1 to C4 alkyl ester of acrylic acid and/or a C1 to C4 alkyl ester of methacrylic acid.
Claim 8
Dependent Claim
46 words
A composition of matter as claimed in claim 1 in which components (1) to (5) are present in the following amounts in percent by weight: (1) 26 to 35, (2) 18 to 23, (3) 30 to 41, (4) 13 to 18 and (5) 0.7 to 2.5.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-06-27 | 1975-12-27 | 1976-06-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-27 | 1979-12-27 | 1980-06-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-27 | 1983-12-27 | 1984-06-27 | $7700.00 | Window Closed / Lapsed |