US4473482A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ethylene/propylene/co polymers
Assignee: Ethyl Corp
•
Filing: 1982-12-06
•
Granted: 1984-09-25
•
Expires: 2002-12-06
Abstract
Abstract An amorphous, oil soluble ethylene/propylene/CO polymer having a mole ratio of ethylene to propylene from about 35:65 to 60:40 and lube oil compositions comprising said polymers.
Inventors
- 👤 Carl Serres
- 👤 John G. Schaffhausen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 00:56
CPC Classifications
C; C10; C10M; C10M143/00; C10M143/02; C08; C08G; C08G67/00; C08G67/02; C10M143/04; C10M143/14; C10M143/16; C10M145/00; C10M145/02; C10M145/04; C10M159/00; C10M159/12; C10M159/16; C10M2205/00; C10M2205/02; C10M2205/022; C10M2205/024; C10M2205/08; C10M2205/10; C10M2209/00; C10M2209/02; C10M2209/04; C10M2209/10; C10M2217/00; C10M2217/04; C10M2217/042; C10M2217/043
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
45 words
An amorphous, oil soluble ethylene/propylene/CO polymer having a mol ratio of ethylene to propylene from about 35:65 to 60:40 and said polymer contains from about 0.01 to 0.2 parts by weight carbonyl groups provided by CO per 100 parts by weight of ethylene and propylene.
Claim 2
Dependent Claim
45 words
An amorphous, oil soluble ethylene/propylene/CO polymer having a mol ratio of ethylene to propylene from about 35:65 to 60:40 and said polymer contains from about 0.01 to 0.2 parts by weight carbonyl groups provided by CO per 100 parts by weight of ethylene and propylene.
Claim 3
Dependent Claim
17 words
The polymer of claim 1 wherein said polymer has an inherent viscosity of 0.1 to about 2.0.
Claim 4
Dependent Claim
28 words
The polymer of claim 2 wherein said polymer contains from about 0.01 to 0.2 parts by weight carbonyl groups per 100 parts by weight of ethylene and propylene.
Claim 5
Dependent Claim
18 words
The polymer of claim 3 wherein part of the carbonyl groups are provided by a vinyl alkyl ketone.
Claim 6
Dependent Claim
42 words
The polymer of claim 3 wherien all of said carbonyl groups are provided by carbon monoxide and the total concentration of carbonyl groups is from about 0.01 to 0.1 parts by weight for each 100 parts by weight of ethylene and propylene.
Claim 7
Dependent Claim
18 words
The polymer of claim 1 wherein said polymer has an inherent viscosity of from about 0.6 to 1.3.
Claim 8
Dependent Claim
28 words
The polymer of claim 6 wherein said polymer contains from about 0.01 to 0.2 parts by weight carbonyl groups per 100 parts by weight of ethylene and propylene.
Claim 9
Dependent Claim
21 words
The polymer of claim 7 wherein part of the carbonyl groups in said polymer are provided by a vinyl alkyl ketone.
Claim 10
Dependent Claim
42 words
The polymer of claim 7 wherein all of the carbonyl groups are provided by carbon monoxide and the total concentration of carbonyl groups ranges from about 0.01 to about 0.1 parts by weight per 100 parts by weight of ethylene and propylene.
Claim 11
Dependent Claim
22 words
A lube oil composition comprising a major portion of lubricating base oil and a minor portion of the polymer of claim 1.
Claim 12
Dependent Claim
22 words
A lube oil composition comprising a major portion of lubricating base oil and a minor portion of the polymer of claim 2.
Claim 13
Dependent Claim
22 words
A lube oil composition comprising a major portion of lubricating base oil and a minor portion of the polymer of claim 3.
Claim 14
Dependent Claim
22 words
A lube oil composition comprising a major portion of lubricating base oil and a minor portion of the polymer of claim 4.
Claim 15
Dependent Claim
22 words
A lube oil composition comprising a major portion of lubricating base oil and a minor portion of the polymer of claim 5.
Claim 16
Dependent Claim
22 words
A lube oil composition comprising a major portion of lubricating base oil and a minor portion of the polymer of claim 6.
Claim 17
Dependent Claim
22 words
A lube oil composition comprising a major portion of lubricating base oil and a minor portion of the polymer of claim 7.
Claim 18
Dependent Claim
22 words
A lube oil composition comprising a major portion of lubricating base oil and a minor portion of the polymer of claim 8.
Claim 19
Dependent Claim
22 words
A lube oil composition comprising a major portion of lubricating base oil and a minor portion of the polymer of claim 9.
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) | 1987-09-25 | 1988-03-26 | 1988-09-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-09-25 | 1992-03-26 | 1992-09-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-09-25 | 1996-03-26 | 1996-09-25 | $7700.00 | Window Closed / Lapsed |