US4264754A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Oligomers and a method for the manufacture thereof
Assignee: Resonac Corp
•
Filing: 1979-12-13
•
Granted: 1981-04-28
•
Expires: 1999-12-13
Abstract
Abstract An oligomer having, as the constitutional component thereof, (dihydrodicyclopentadienyl)-maleates or -fumarates of the general formula I: - - <IMAGE> (I) - wherein, R is H or <IMAGE> and possessing a softening point in the range of from 50 DEG to 180 DEG C. and solubility in organic solvents. It is obtained by polymerizing the compound having the above general formula I under heating at a temperature of 220 DEG to 300 DEG C. in the absence of a catalyst.
Inventors
- 👤 Akira Kageyama
- 👤 Iwao Maekawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 23:53
CPC Classifications
C; C08; C08F; C08F122/00; C08F122/10; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31551; Y10T428/31645; Y10T428/31649
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
43 words
An oligomer having, as the constituent component theeof, (dihydrodicyclopentadienyl)-maleates or -fumarates of the general formula I: ##STR8## (I) wherein, R is H or ##STR9## and possessing a softening point in the range of from 50° to 180° C. and solubility in organic solvents.
Claim 2
Dependent Claim
43 words
An oligomer having, as the constituent component theeof, (dihydrodicyclopentadienyl)-maleates or -fumarates of the general formula I: ##STR8## (I) wherein, R is H or ##STR9## and possessing a softening point in the range of from 50° to 180° C. and solubility in organic solvents.
Claim 3
Dependent Claim
20 words
The oligomer according to claim 1, wherein the softening point falls in the range of from 60° to 150° C.
Claim 4
Dependent Claim
39 words
The oligomer according to claim 1, wherein the substituent R in the general formula I is H and the oligomer possesses a number-average molecular weight of from 400 to 2,000 and an iodine value of from 60 to 102.
Claim 5
Dependent Claim
31 words
The oligomer according to claim 3, wherein the organic solvents in which the oligomer is soluble are ketone solvents, ester solvents and monohydric alcohol solvents having one to eight carbon atoms.
Claim 6
Dependent Claim
20 words
The oligomer according to claim 4, wherein the number-average molecular weight falls in the range of from 500 to 1,500.
Claim 7
Dependent Claim
39 words
The oligomer according to claim 1, wherein the substituent R in the general formula I is ##STR10## and the oligomer possesses a number-average molecular weight of from 500 to 2,000 and an iodine value of from 75 to 134.
Claim 8
Dependent Claim
25 words
The oligomer according to claim 6, wherein the organic solvents in which the oligomer is soluble are aromatic hydrocarbon solvents, ketone solvents and ester solvents.
Claim 9
Dependent Claim
20 words
The oligomer according to claim 7, wherein the number-average molecular weight falls in the range of from 550 to 1,500.
Claim 10
Independent Claim
78 words
A method for manufacture of an oligomer having, as the constituent component thereof, the compound of the general formula I, ##STR11## (I) wherein, R is H or ##STR12## and possesing a softening point in the range of from 50° to 180° C. and solubility in organic solvents, which method comprises thermally polymerizing (dihydrodicyclopentadienyl)-maleate or -fumarate of the general formula I at a temperature in the range of from 220° to 300° C. in the absence of a catalyst.
Claim 11
Independent Claim
78 words
A method for manufacture of an oligomer having, as the constituent component thereof, the compound of the general formula I, ##STR11## (I) wherein, R is H or ##STR12## and possesing a softening point in the range of from 50° to 180° C. and solubility in organic solvents, which method comprises thermally polymerizing (dihydrodicyclopentadienyl)-maleate or -fumarate of the general formula I at a temperature in the range of from 220° to 300° C. in the absence of a catalyst.
Claim 12
Dependent Claim
20 words
The method according to claim 9, wherein the polymerization temperature falls in the range of from 230° to 280° C.
Claim 13
Dependent Claim
19 words
The method according to claim 9, wherein the polymerization reaction is carried out in the absence of a solvent.
Claim 14
Dependent Claim
19 words
The method according to claim 9, wherein the polymerization reaction is carried out in the presence of a solvent.
Claim 15
Dependent Claim
22 words
The method according to claim 9, wherein the oligomer has a softening point in the range of from 60° to 150° C.
Claim 16
Dependent Claim
39 words
The method according to claim 9, wherein the substituent R in the general formula I is H and the oligomer has a number-average molecular weight of from 400 to 2,000 and an iodine value of from 60 to 102.
Claim 17
Dependent Claim
32 words
The method according to claim 14, wherein the organic solvents in which the oligomer is soluble are ketone solvents, ester solvents and monohydric alcohol solvents having from one to eight carbon atoms.
Claim 18
Dependent Claim
19 words
The method according to claim 15, wherein the oligomer has a number-average molecular weight of from 500 to 1,500.
Claim 19
Dependent Claim
39 words
The method according to claim 9, wherein the substitutent R in the general formula I is ##STR13## and the oligomer has a number-average molecular weight of from 500 to 2,000 and an iodine value of from 75 to 134.
Claim 20
Dependent Claim
25 words
The method according to claim 17, wherein the organic solvent in which the oligomer is soluble are aromatic hydrocarbon solvents, ketone solvents, and ester solvents.
Claim 21
Dependent Claim
19 words
The method according to claim 18, wherein the oligomer has a number-average molecular weight of from 550 to 1,500.
References Cited (Backward Citations)
US2389136A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-04-27 | 1984-10-27 | 1985-04-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-04-27 | 1988-10-27 | 1989-04-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-04-27 | 1992-10-27 | 1993-04-28 | $7700.00 | Window Closed / Lapsed |