US4068062A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polymerizing C5 and C6 olefins and diolefins with 3° hydrocarbyl halide to produce narrow molecular weight petroleum resins having low softening points
Assignee: ExxonMobil Technology and Engineering Co
•
Filing: 1976-07-16
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Granted: 1978-01-10
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Expires: 1996-07-16
Abstract
Abstract A petroleum resin is prepared by a process which comprises polymerizing using a Friedel-Crafts catalyst:
Inventors
- 👤 Andre Lepert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 23:02
CPC Classifications
C; C08; C08F; C08F240/00; C08L; C08L57/00; C08L57/02
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
100 words
In the process of preparing a low softening point petroleum resin which comprises polymerising using a Friedel-Crafts catalyst a. a petroleum resin feed comprising C 5 olefins and C 5 diolefins, C 6 olefins and C 6 diolefins or a mixture of C 5 and C 6 olefins and diolefins, said feed being obtained from the cracking of a petroleum feedstock the improvement which comprises including therewith b. at least 0.5 wt.% based on the petroleum resin feed of a tertiary hydrocarbyl halide to obtain a resin of narrowed molecular weight distribution having tackifying properties for natural and synthetic rubbers.
Claim 2
Dependent Claim
100 words
In the process of preparing a low softening point petroleum resin which comprises polymerising using a Friedel-Crafts catalyst a. a petroleum resin feed comprising C 5 olefins and C 5 diolefins, C 6 olefins and C 6 diolefins or a mixture of C 5 and C 6 olefins and diolefins, said feed being obtained from the cracking of a petroleum feedstock the improvement which comprises including therewith b. at least 0.5 wt.% based on the petroleum resin feed of a tertiary hydrocarbyl halide to obtain a resin of narrowed molecular weight distribution having tackifying properties for natural and synthetic rubbers.
Claim 3
Dependent Claim
18 words
A process according to claim 1 wherein at least 1 wt.% of the tertiary hydrocarbyl halide is used.
Claim 4
Dependent Claim
16 words
A process according to claim 2 wherein 1-4 wt.% of the tertiary hydrocarbyl halide is used.
Claim 5
Dependent Claim
17 words
A process according to claim 1 wherein the petroleum feedstock is cracked in the presence of steam.
Claim 6
Dependent Claim
21 words
A process according to claim 1 wherein the petroleum feedstock is cracked at a temperature of between 500° and 870° C.
Claim 7
Dependent Claim
33 words
A process according to claim 1 wherein the cracked feedstock is subjected to fractionation to remove C 2 and C 4 light ends and thermal soaking and distillation to remove cyclic conjugated diolefins.
Claim 8
Dependent Claim
20 words
A process according to claim 6 wherein the thermal soaking takes place at a temperature of 100° to 150° C.
Claim 9
Dependent Claim
16 words
A process according to claim 1 wherein the tertiary hydrocarbyl halide is a tertiary alkyl halide.
Claim 10
Dependent Claim
21 words
A process according to claim 1 wherein the hydrocarbyl chain in the tertiary hydrocarbyl halide contains 1 to 6 carbon atoms.
Claim 11
Dependent Claim
19 words
A process according to claim 4 wherein the tertiary hydrocarbyl halide is tertiary butyl chloride or tertiary butyl bromide.
Claim 12
Dependent Claim
22 words
A process according to claim 1 wherein the Friedel-Craftd catalyst is aluminium chloride, aluminium bromide or liquid aluminium chloride/hydrochloric acid/substituted aromatic complex.
Claim 13
Dependent Claim
16 words
A process according to claim 1 wherein the polymerization temperature is between 30° and 80° C.
Claim 14
Dependent Claim
30 words
A process according to claim 1 wherein the tertiary hydrocarbyl halide is combined with a branched-chain olefin and after polymerization the resin is stripped of unreacted hydrocarbons by flash distillation.
References Cited (Backward Citations)
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US2856389A
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US2849512A
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US2994689A
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US2894937A
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US3905948A
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US3987123A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-01-09 | 1981-07-11 | 1982-01-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-01-09 | 1985-07-11 | 1986-01-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-01-09 | 1989-07-11 | 1990-01-10 | $7700.00 | Window Closed / Lapsed |