US3684760A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Molding compositions of polybutene-1
Assignee: Huels AG
•
Filing: 1970-07-27
•
Granted: 1972-08-15
•
Expires: 1990-07-27
Abstract
Abstract The conversion of polybutene-1 from modification II to modification I is accelerated by the incorporation therein of a mixture of a solid polypropylene and a low molecular weight compound, e.g., oil, wax, an oily or semi-liquid polyolefin, a higher aliphatic carboxylic acid or salt or ester thereof, an ester of an aromatic carboxylic acid, an ester of an inorganic acid or a chlorinated paraffin.
Inventors
- 👤 Gunther Goldbach
- 👤 Heinz-Hermann Meyer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 05:11
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/0008; C08K5/0016; C08L; C08L23/00; C08L23/02; C08L23/18; C08L23/20
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
18 words
A polybutene-1 composition according to claim 1 containing about 0.1 to 20 percent by weight of solid polypropylene.
Claim 2
Dependent Claim
21 words
A polybutene-1 composition according to claim 1 containing about 1 to 10 percent by weight of an ester of stearic acid.
Claim 3
Dependent Claim
26 words
A polybutene-1 composition according to claim 4 wherein the ester is selected from the group consisting of butyl stearate, hydroxyethyl stearatE, n-decyl stearate and vinyl stearate.
Claim 4
Dependent Claim
13 words
A polybutene-1 composition according to claim 4 wherein the ester is butyl stearate.
Claim 5
Dependent Claim
90 words
A process for increasing the conversion rate of polybutene-1 from modification II to modification I which comprises incorporating therein, prior to thermoplastic processing, up to about 70 percent by weight of a mixture of 0.1 to 70 percent by weight of a thermoplastic solid polypropylene and an amount between 0.1 to 50 percent by weight, based on the polybutene-1, effective to decrease substantially the modification II to modification I conversion rate of the polybutene-polypropylene mixture, of an ester of stearic acid of a molecular weight substantially lower than the polypropylene.
Claim 6
Dependent Claim
22 words
A process according to claim 6 wherein about 0.1 to 20 percent by weight of solid polypropylene is incorporated in the polybutene-1.
Claim 7
Dependent Claim
25 words
A process according to claim 6 wherein about 1 to 10 percent by weight of an ester of stearic acid is incorporated in the polybutene-1.
Claim 8
Dependent Claim
25 words
A process according to claim 8 wherein the ester is selected from the group consisting of butyl stearate, hydroxyethyl stearate, n-decyl stearate and vinyl stearate.
Claim 9
Dependent Claim
12 words
A process according to claim 9 wherein the ester is butyl stearate.
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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) | 1975-08-15 | 1976-02-14 | 1976-08-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-15 | 1980-02-14 | 1980-08-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-15 | 1984-02-14 | 1984-08-15 | $7700.00 | Window Closed / Lapsed |