US3846384A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polymerization process
Assignee: ISP Investments LLC
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Filing: 1972-01-19
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Granted: 1974-11-05
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Expires: 1992-01-19
Abstract
Abstract The invention relates to a polymerization process for the preparation of film-forming polymers which comprises contacting an acrylic compound with vinyl ether compound co-polymerizable therewith in an inert organic hydrocarbon solvent in the presence of a free radical-supplying catalyst until polymer formation occurs and recovering the polymer product thus produced.
Inventors
- 👤 L Doe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 22:28
CPC Classifications
C; C08; C08F; C08F220/00; C08F220/02; C08F220/04; C08F220/06; C08F16/00; C08F16/12
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
63 words
A POLYMERIIZATION PROCESS WHICH COMPRISES CONTACTING AN ACRYLIC COMPOUND SELECTED FROM THE GROUP CONSISTING OF ACRYLIC ACID AND THE ALPHA-ALKYL HOMOLOGS THEREOF WITH A UNDER SUBSTANTIALLY ANHYDROUS CONDITIONS OF THE FORMULA H2C=CH-O-R1 WHEREIN R1 HAS 1 TO 8 CARBON ATOMS VINYL ETHER COMPOUND CO-POLYMERIZIBLE THEREWITH IN AN INERT ORGANIC HYDROCARBON SOLVENT IN THE PRESENCE OF A FREE RADICALSUPPLYING CATALYST UNTIL POLYMER FORMATION OCCURS.
Claim 2
Dependent Claim
63 words
A POLYMERIIZATION PROCESS WHICH COMPRISES CONTACTING AN ACRYLIC COMPOUND SELECTED FROM THE GROUP CONSISTING OF ACRYLIC ACID AND THE ALPHA-ALKYL HOMOLOGS THEREOF WITH A UNDER SUBSTANTIALLY ANHYDROUS CONDITIONS OF THE FORMULA H2C=CH-O-R1 WHEREIN R1 HAS 1 TO 8 CARBON ATOMS VINYL ETHER COMPOUND CO-POLYMERIZIBLE THEREWITH IN AN INERT ORGANIC HYDROCARBON SOLVENT IN THE PRESENCE OF A FREE RADICALSUPPLYING CATALYST UNTIL POLYMER FORMATION OCCURS.
Claim 3
Dependent Claim
33 words
A process according to claim 1 wherein the acrylic compound is selected from the group consisting of acrylic acid and the Alpha -alkyl homologs thereof and the vinyl ether is ethyl vinyl ether.
Claim 4
Dependent Claim
13 words
A process according to claim 2 wherein the acrylic compound is acrylic acid.
Claim 5
Dependent Claim
13 words
A process according to claim 2 wherein the acrylic compound is methacrylic acid.
Claim 6
Dependent Claim
14 words
A process according to claim 1 wherein the vinyl ether is methyl vinyl ether.
Claim 7
Dependent Claim
14 words
A process according to claim 1 wherein the vinyl ether is ethyl vinyl ether.
Claim 8
Dependent Claim
15 words
A process according to claim 1 wherein the vinyl ether compound is methoxyethyl vinyl ether.
Claim 9
Dependent Claim
25 words
A process according to claim 1 wherein the inert organic hydrocarbon solvent is selected from the group consisting of aromatic, aliphatic and cycloaliphatic hydrocarbon compounds.
Claim 10
Dependent Claim
14 words
A process according to claim 5 wherein the inert organic hydrocarbon solvent is benzene.
Claim 11
Dependent Claim
13 words
A process according to claim 5 wherein the inert hydrocarbon solvent is toluene.
Claim 12
Dependent Claim
14 words
A process according to claim 5 wherein the inert organic hydrocarbon solvent is xylene.
Claim 13
Dependent Claim
14 words
A process according to claim 5 wherein the inert organic hydrocarbon solvent is cyclohexane.
Claim 14
Dependent Claim
27 words
A process according to claim 1 wherein the free radical-supplying catalyst is selected from the group consisting of organic peroxides and organic compounds containing and azo linkage.
Claim 15
Dependent Claim
13 words
A process according to claim 13 wherein the free radical-supplying catalyst is azobisisobutyronitrile.
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) | 1977-11-04 | 1978-05-06 | 1978-11-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-11-04 | 1982-05-06 | 1982-11-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-11-04 | 1986-05-06 | 1986-11-05 | $7700.00 | Window Closed / Lapsed |