US4162999A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Blends containing elastomers
Assignee: BP PLC
•
Filing: 1978-02-06
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Granted: 1979-07-31
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Expires: 1998-02-06
Abstract
Abstract A blend of chlorine-containing synthetic elastomer and hardened extract, contains an aliphatic amine having 8 to 24 carbon atoms in the molecule. The presence of the amine is beneficial when making sheets between rollers at moderately elevated temperatures.
Inventors
- 👤 John Bohemen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 20:08
CPC Classifications
C; C08; C08L; C08L95/00; C08K; C08K5/00; C08K5/16; C08K5/17; C08L11/00; C08L23/00; C08L23/26; C08L23/28; C08L23/286; C08L23/32; C08L23/34
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
126 words
A composition which comprises a blend of a chlorine-containing synthetic elastomer and a hardened extract having a saturated hydrocarbon content of not more than 10% w/w and obtained by blowing a gas containing free oxygen into a petroleum extract at elevated temperatures, the petroleum extract having been obtained by the solvent extraction of a product of petroleum refining which is a distillate petroleum fraction or a deasphalted petroleum residue or a blend of this deasphalted residue and distillate, which product boils above 350° C. at atmospheric pressure and which contains a major proportion of aromatic hydrocarbons, characterized in that the composition contains about at least 0.03% by weight, based on the total composition, of an aliphatic amine containing 8 to 24 carbon atoms in the molecule.
Claim 2
Dependent Claim
126 words
A composition which comprises a blend of a chlorine-containing synthetic elastomer and a hardened extract having a saturated hydrocarbon content of not more than 10% w/w and obtained by blowing a gas containing free oxygen into a petroleum extract at elevated temperatures, the petroleum extract having been obtained by the solvent extraction of a product of petroleum refining which is a distillate petroleum fraction or a deasphalted petroleum residue or a blend of this deasphalted residue and distillate, which product boils above 350° C. at atmospheric pressure and which contains a major proportion of aromatic hydrocarbons, characterized in that the composition contains about at least 0.03% by weight, based on the total composition, of an aliphatic amine containing 8 to 24 carbon atoms in the molecule.
Claim 3
Dependent Claim
9 words
A composition according to claim 1 containing chlorosulphonated polyethylene.
Claim 4
Dependent Claim
16 words
A composition according to either of claims 1 or 2 wherein the composition contains chlorinated polyethylene.
Claim 5
Dependent Claim
28 words
A composition according to claim 3 wherein the chlorinated polyethylene is a chlorinated high density polyethylene having a chlorine content of from 25 to 40% by weight chlorine.
Claim 6
Dependent Claim
22 words
A composition according to claims 1 wherein the hardened extract has a softening point in the range 50° C. to 200° C.
Claim 7
Dependent Claim
21 words
A composition according to claim 5 wherein the hardened extract has a softening point in the range 85° to 170° C.
Claim 8
Dependent Claim
23 words
A composition according to claim 1 wherein the hardened extract has a content of asphaltenes and insolubles of at least 20% by weight.
Claim 9
Dependent Claim
18 words
A composition according to claim 7 wherein the content of asphaltenes alone is at least 20% by weight.
Claim 10
Dependent Claim
19 words
A composition according to claim 1 wherein the aliphatic amine has 12 to 20 carbon atoms in the molecule.
Claim 11
Dependent Claim
13 words
A composition according to claim 8 wherein the amine is a primary amine.
Claim 12
Dependent Claim
26 words
A composition according to claim 1 wherein the weight of hardened extract present is not more than 300% by weight of the total weight of elastomer.
Claim 13
Dependent Claim
25 words
A composition according to claim 11 wherein the weight of hardended extract is not more than 200% by weight of the total weight of elastomer.
Claim 14
Dependent Claim
26 words
A composition according to claim 1 wherein the quantity of aliphatic amine is from 0.03 to 3% by weight based on the weight of total composition.
Claim 15
Dependent Claim
25 words
A composition according to claim 13 wherein the quantity of aliphatic amine is 0.1 to 1% by weight, based on the weight of total composition.
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) | 1982-07-30 | 1983-01-29 | 1983-07-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-07-30 | 1987-01-29 | 1987-07-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-07-30 | 1991-01-29 | 1991-07-31 | $7700.00 | Window Closed / Lapsed |