Patent US3879358A successfully refreshed from Google Patents.
US3879358A
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Nitrated polymers with saturated hydrocarbon backbone
Assignee: Texaco Inc
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Filing: 1973-01-22
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Granted: 1975-04-22
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Expires: 1993-01-22
Abstract
Abstract Graft copolymers are prepared in a two-stage process by first reacting, for example, 1,2-polybutadiene or an ethylene/propylene/alkylidene norbornene terpolymer with dinitrogen tetroxide to form a nitrated backbone polymer having incorporated therein nitro and nitrite functions which serve, in the second stage of the process, as sites for the subsequent graft copolymerization of an acrylate monomer.
Inventors
- 👤 Donald R Lachowicz
- 👤 Charles B Holder
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 13:28
CPC Classifications
C; C08; C08F; C08F255/00; C08F255/02; C08F255/023; C08C; C08C19/00; C08C19/22; C08F279/00; C08F279/02; C08F8/00; C08F8/30
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
33 words
A PROCESS FOR PREPARING A NITRATED POLYMER WHICH COMPRISES: A. CONTACTING A BACKBONE POLYMER HAVING A SATURATED HYDROCARBON CHAIN PORTION AND PLURALITY OF PENDANT HYDROCARBON GROUPS EACH CONTAINING A MOIETY OF THE FORMULA:
Claim 2
Dependent Claim
33 words
A PROCESS FOR PREPARING A NITRATED POLYMER WHICH COMPRISES: A. CONTACTING A BACKBONE POLYMER HAVING A SATURATED HYDROCARBON CHAIN PORTION AND PLURALITY OF PENDANT HYDROCARBON GROUPS EACH CONTAINING A MOIETY OF THE FORMULA:
Claim 3
Dependent Claim
33 words
A process for preparing a nitrated polymer which comprises: A. contacting a backbone polymer having a saturated hydrocarbon chain portion and plurality of pendant hydrocarbon groups each containing a moiety of the formula:
Claim 4
Dependent Claim
33 words
A process for preparing a nitrated polymer which comprises: A. contacting a backbone polymer having a saturated hydrocarbon chain portion and plurality of pendant hydrocarbon groups each containing a moiety of the formula:
Claim 5
Dependent Claim
15 words
The process of claim 1 wherein the backbone polymer comprises recurring units of the formula:
Claim 6
Dependent Claim
12 words
The process of claim 1 wherein the said backbone polymer is 1,2-polybutadiene.
Claim 7
Dependent Claim
21 words
The process of claim 1 wherein the said backbone polymer is a terpolymer of ethylene, propylene and units of the formula:
Claim 8
Dependent Claim
18 words
The process of claim 1 wherein the said backbone polymer is a terpolymer of ethylene, propylene and 5-ethylidene-2-norbornene.
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) | 1978-04-21 | 1978-10-21 | 1979-04-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-04-21 | 1982-10-21 | 1983-04-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-04-21 | 1986-10-21 | 1987-04-22 | $7700.00 | Window Closed / Lapsed |