US4824921A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Petroleum resins and their production
Assignee: ExxonMobil Technology and Engineering Co
•
Filing: 1987-01-07
•
Granted: 1989-04-25
•
Expires: 2007-01-07
Abstract
Abstract Resins having an improved combination of softening point and tackifying properties together with good color and heat stability are obtained by Freidel-Crafts copolymerization of 4 to 80 wt. % of a C5/C6 unsaturated feed; 5 to 55 wt. % of a terpene and 3 to 55 wt. % of an unsaturated aromatic compound.
Inventors
- 👤 Quoc Luvinh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 14:23
CPC Classifications
C; C08; C08F; C08F210/00; C08F210/14; C08F240/00; C09; C09J; C09J123/00; C09J123/02; C09J123/04; C09J123/08; C08L; C08L2666/00; C08L2666/02; Y; Y10; Y10S; Y10S526/00; Y10S526/916
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
123 words
A process for the production of petroleum resins compatible with base polymers in hot melt formulations and having a softening point of from about 60° C. to about 120° C. and Gardner color of about 4 or less, comprising copolymerizing using a Friedel-Crafts catalyst, a mixture consisting essentially of: (i) 5 to 55 wt. % of a feed comprising C 5 olefines or diolefines, or C 6 olefines or diolefines or a mixture of C 5 and C 6 olefines or diolefines, said feed comprising at least 10 wt. % olefines; (ii) 5 to 55 wt. % of a terpene; and (iii) 3 to 55 wt. % of an olefinically unsaturated aromatic compound wherein said mixture is substantially free form cyclopentadiene and dicyclopentadiene.
Claim 2
Dependent Claim
123 words
A process for the production of petroleum resins compatible with base polymers in hot melt formulations and having a softening point of from about 60° C. to about 120° C. and Gardner color of about 4 or less, comprising copolymerizing using a Friedel-Crafts catalyst, a mixture consisting essentially of: (i) 5 to 55 wt. % of a feed comprising C 5 olefines or diolefines, or C 6 olefines or diolefines or a mixture of C 5 and C 6 olefines or diolefines, said feed comprising at least 10 wt. % olefines; (ii) 5 to 55 wt. % of a terpene; and (iii) 3 to 55 wt. % of an olefinically unsaturated aromatic compound wherein said mixture is substantially free form cyclopentadiene and dicyclopentadiene.
Claim 3
Dependent Claim
19 words
A process according to claim 1 wherein from 10 to 30 wt. % of the feed (i) is used.
Claim 4
Dependent Claim
35 words
A process according to claim 1 wherein the feed contains less than 1.5 wt. % isoprene, from 50 to 80 wt. % pentadiene-1,3 the remainder being other C 5 or C 6 olefines or diolefines.
Claim 5
Dependent Claim
17 words
A process according to claim 1 wherein 15 to 35 wt. % of the terpene is used.
Claim 6
Dependent Claim
12 words
A process according to claim 1 wherein the terpene is alpha pinene.
Claim 7
Dependent Claim
11 words
A process according to claim 1 wherein the terpene is carene.
Claim 8
Dependent Claim
11 words
A process according to claim 1 wherein the terpene is limonene.
Claim 9
Dependent Claim
17 words
A process according to claim 1 wherein the feed contains more than 20 wt. % of olefines.
Claim 10
Dependent Claim
14 words
A process according to claim 1 wherein the olefinically unsaturated aromatic compound is styrene.
Claim 11
Dependent Claim
14 words
A process according to claim 1 wherein the Friedel Crafts Catalyst is aluminum trichloride.
Claim 12
Dependent Claim
28 words
A process according to claim 10 wherein the aluminum trichloride is in the form of a complex with hydrochloric acid or an alkyl halide and an aromatic compound.
Claim 13
Dependent Claim
68 words
A resin consisting essentially of a copolymer containing from 5 to 80 wt. % of units derived from an olefinically unsaturated aromatic compound form 5 to 80 wt. % of units derived from C 5 olefines or diolefines or C 6 olefines diolefines or a mixture of C 5 and C 6 olefines or diolefines and from 7 to 45 wt. % of units derived from a terpene.
Claim 14
Dependent Claim
68 words
A resin consisting essentially of a copolymer containing from 5 to 80 wt. % of units derived from an olefinically unsaturated aromatic compound form 5 to 80 wt. % of units derived from C 5 olefines or diolefines or C 6 olefines diolefines or a mixture of C 5 and C 6 olefines or diolefines and from 7 to 45 wt. % of units derived from a terpene.
Claim 15
Dependent Claim
121 words
A resin for use in hot melt adhesive formulations, said resin having a softening point of from about 75° C. to about 115° C., a molecular weight of from about 500 to about 1500 and a Gardner color of about 4 or less, said resin being a copolymer consisting essentially of from about 5 to about 80 wt. % of units derived from an olefinically unsaturated aromatic compound, from about 5 to about 80 wt. % of units derived from C 5 olefines or diolefines or C 6 olefines or diolefines or mixtures thereof, form about 7 to about 45 wt. % of units, derived from a terpene, less than 2 wt. % cyclopentadiene or di-cyclopentadiene, and a chain transfer agent.
Claim 16
Dependent Claim
121 words
A resin for use in hot melt adhesive formulations, said resin having a softening point of from about 75° C. to about 115° C., a molecular weight of from about 500 to about 1500 and a Gardner color of about 4 or less, said resin being a copolymer consisting essentially of from about 5 to about 80 wt. % of units derived from an olefinically unsaturated aromatic compound, from about 5 to about 80 wt. % of units derived from C 5 olefines or diolefines or C 6 olefines or diolefines or mixtures thereof, form about 7 to about 45 wt. % of units, derived from a terpene, less than 2 wt. % cyclopentadiene or di-cyclopentadiene, and a chain transfer agent.
Claim 17
Dependent Claim
20 words
The resin of claim 13, said resin having a softening point of from about 90° C. to about 105° C.
Claim 18
Dependent Claim
21 words
A process according to claim 1 wherein from 10 to 45 wt. % of said olefinically unsaturated aromatic compound is used.
Claim 19
Dependent Claim
10 words
The resin of claim 13 wherein said terpene is alpha-pinene.
References Cited (Backward Citations)
JPS4930489A
Cited
JPS501598A
Cited
US4022723A
Cited
GB1537852A
Cited
GB1538057A
Cited
FR2368504A1
Cited
US4156762A
Cited
EP0013060A1
Cited
GB2032442A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-04-24 | 1992-10-24 | 1993-04-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-04-24 | 1996-10-24 | 1997-04-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-04-24 | 2000-10-24 | 2001-04-25 | $7700.00 | Window Closed / Lapsed |