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US4098739A
Expired / Lapsed
US
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Blends containing modified polyethylene
Assignee: BP PLC
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Filing: 1977-03-21
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Granted: 1978-07-04
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Expires: 1997-03-21
Abstract
Abstract A blend of chlorosulphonated polyethylene elastomer and hardened extract obtained by blowing a gas containing free oxygen at elevated temperatures into a solvent extract of petroleum vacuum distillate or a deasphalted petroleum residue which extract boils above 350° C at atmospheric pressure and contains a major proportion of aromatic hydrocarbons, said hardened extract having a saturated hydrocarbon content of not more than 10% by weight. The hardened extract serves not only to extend the chlorosulfonated polyethylene, but also improves certain physical properties of sheets made from the blend.
Inventors
- 👤 Peter Henry Westermann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 15:17
CPC Classifications
C; C10; C10C; C10C3/00; C10C3/02; C10C3/04; C08; C08K; C08K3/00; C08K3/18; C08K3/20; C08K3/22; C08L; C08L23/00; C08L23/26; C08L23/28; C08L23/32; C08L23/34; C08L95/00
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
91 words
A blend of chlorosulphonated polyethylene elastomer and hardened extract, said hardened extract being obtained by blowing a gas containing free oxygen at elevated temperatures into a solvent extract of a distillate petroleum fraction or a deasphalted petroleum residue, said hardened extract having a boiling point above 350° C. at atmospheric pressure, containing a major proportion of aromatic hydrocarbons and having a saturated hydrocarbon content of not more than 10% by weight, the weight ratio of said chlorosulfonated polyethylene to hardened extract being in the range of from about 4:1 to 1:10.
Claim 2
Dependent Claim
91 words
A blend of chlorosulphonated polyethylene elastomer and hardened extract, said hardened extract being obtained by blowing a gas containing free oxygen at elevated temperatures into a solvent extract of a distillate petroleum fraction or a deasphalted petroleum residue, said hardened extract having a boiling point above 350° C. at atmospheric pressure, containing a major proportion of aromatic hydrocarbons and having a saturated hydrocarbon content of not more than 10% by weight, the weight ratio of said chlorosulfonated polyethylene to hardened extract being in the range of from about 4:1 to 1:10.
Claim 3
Dependent Claim
24 words
A blend according to claim 1 wherein the hardened extract has a content of asphaltenes and toluene insolubles of at least 20% by weight.
Claim 4
Dependent Claim
21 words
A blend according to claim 2 wherein the hardened extract has a content of "saturates" of less than 5% by weight.
Claim 5
Dependent Claim
22 words
A blend according to claim 3 wherein th hardened extract has a content of asphaltenes which is at least 20% by weight.
Claim 6
Dependent Claim
21 words
A blend according to claim 1 wherein the hardened extract has a softening point in the range 50° to 200° C.
Claim 7
Dependent Claim
21 words
A blend according to claim 5 wherein the hardened extract has a softening point in the range 85° to 170° C.
Claim 8
Dependent Claim
13 words
A blend according to claim 1 wherein the blend contains a vulcanising agent.
Claim 9
Dependent Claim
14 words
A blend according to claim 7 wherein the vulcanising agent is polybasic metal oxide.
Claim 10
Dependent Claim
13 words
A blend according to claim 8 wherein the vulcanising agent comprises lead monoxide.
Claim 11
Dependent Claim
14 words
A blend according to claim 1 which contains a major proportion of chlorinated polyethylene.
Claim 12
Dependent Claim
30 words
A blend according to claim 10 wherein the chlorinated polyethylene is based on high density polyethylene and has a chlorine content of from 25% to 40% by weight of chlorine.
Claim 13
Dependent Claim
17 words
A blend according to claim 1 wherein the weight ratio is in the range 2:1 to 1:5.
Claim 14
Dependent Claim
27 words
A blend according to claim 10 wherein chlorinated polyethylene is present in a weight ratio of chlorinated polyethylene to chlorosulphonated polyethylene in the range 1:9 to 4:1.
Claim 15
Dependent Claim
20 words
A blend according to claim 13 wherein the weight ratio of chlorinated polyethylene to chlorosulphonated polyethylene is 1:4 to 2:1.
Claim 16
Dependent Claim
26 words
A blend according to claim 5 which comprises from 1 to 250 % by weight of particulate filler based on the weight of chlorine-containing polyethylene elastomer.
Claim 17
Dependent Claim
25 words
A blend according to claim 15 which comprises from 10 to 150% by weight of particulate filler based on the weight of chlorine-containing polyethylene elastomer.
Claim 18
Dependent Claim
24 words
A blend according to claim 5 which comprises from 1 to 50% by weight of plasticiser based on the weight of chlorine-containing polyethylene elastomer.
Claim 19
Dependent Claim
27 words
A blend according to claim 5 which comprises from 1 to 50% by weight of fibrous filler based on the weight of chlorine-containing polyethylene elastomer by weight.
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) | 1981-07-03 | 1982-01-02 | 1982-07-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-07-03 | 1986-01-02 | 1986-07-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-07-03 | 1990-01-02 | 1990-07-04 | $7700.00 | Window Closed / Lapsed |