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US4029865A
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Process for the polymerization of ethylenically unsaturated organic compounds
Assignee: Societa Italiana Resine SpA SIR
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Filing: 1975-08-07
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Granted: 1977-06-14
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Expires: 1995-08-07
Abstract
Abstract Vinylidene chloride polymers and copolymers are prepared by contacting vinylidene chloride monomer alone or in mixture with other ethylenically unsaturated monomers with a catalytic system consisting of an organic per-compound, an organic compound of zirconium or cobalt and an acid compound according to the definition of Bronsted and Lowry in an organic solvent medium. High yields and polymerization speeds are achieved at low polymerization temperatures (10°-35° C).
Inventors
- 👤 Silvio Vargiu
- 👤 Volfango Gualandi
- 👤 Beppino Passalenti
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 20:29
CPC Classifications
C; C08; C08F; C08F14/00; C08F14/02; C08F14/04; C08F14/08
Claims Analysis
Total Claims: 28
Claim 1
Independent Claim
74 words
A method for the solution polymerization by addition of vinylidene chloride monomer or a mixture of the latter with one or more other ethylenically unsaturated monomers, which comprises contacting said monomer or mixture of monomers with a catalytic system consisting of an organic per-compound, an organic compound of zirconium and para-toluene acid sulfonic, in an organic solvent medium in which the monomers, the catalytic system and the polymer or copolymer being formed are soluble.
Claim 2
Independent Claim
74 words
A method for the solution polymerization by addition of vinylidene chloride monomer or a mixture of the latter with one or more other ethylenically unsaturated monomers, which comprises contacting said monomer or mixture of monomers with a catalytic system consisting of an organic per-compound, an organic compound of zirconium and para-toluene acid sulfonic, in an organic solvent medium in which the monomers, the catalytic system and the polymer or copolymer being formed are soluble.
Claim 3
Dependent Claim
38 words
The method of claim 1, wherein said other monomers are selected in the group consisting of acrylonitrile, acrylic acid, methacrylic acid, alkyl esters of the acrylic and metacrylic acids and hydroxyalkyl esters of the acrylic and methacrylic acids.
Claim 4
Dependent Claim
15 words
The method of claim 1, wherein the polymerization temperature is from 10° to 35° C.
Claim 5
Dependent Claim
13 words
The method of claim 1, wherein the polymerization temperature is of 25°-30° C.
Claim 6
Dependent Claim
23 words
The method of claim 1, wherein the organic per-compound is selected in the group consisting of the organic peroxides, hydroperoxides, peroxy-acids and peroxy-esters.
Claim 7
Dependent Claim
23 words
The method of claim 1, wherein the organic per-compound is selected in the group consisting of methylethylketone peroxide, benzoyl peroxide and tert-butyl hydroperoxide.
Claim 8
Dependent Claim
29 words
The method of claim 1, wherein the organic per-compound is used in an amount of from 0.01 to 10% by weight with respect to the amount of monomers used.
Claim 9
Dependent Claim
18 words
The method of claim 7, wherein said amount of organic per-compound is from 0.5 to 3% by weight.
Claim 10
Dependent Claim
37 words
The method of claim 1, wherein the organic compound of zirconium is selected in the group consisting of the zirconium salts of aliphatic carboxylic acids and aromatic carboxylic acids and the complexes of zirconium with organic substances.
Claim 11
Dependent Claim
25 words
The method of claim 1, wherein the organic compound of zirconium is selected in the group consisting of the octoates, naphthenates and acetylacetonates of zirconium.
Claim 12
Dependent Claim
36 words
The method of claim 1, wherein the organic compound of zirconium is used in a quantity ensuring an amount of from 0.001 to 0.06% by weight of zirconium with respect to the amount of monomers used.
Claim 13
Dependent Claim
28 words
The method of claim 1, wherein para-toluenesulfonic acid is used in an amount of from 0.005 to 5% by weight with respect to the amount of monomers used.
Claim 14
Dependent Claim
29 words
The method of claim 1, wherein the organic solvent medium is selected in the group consisting of ketones, ethylene glycol glycolic ethers, acetic acid esters and diethylene glycol monoethers.
Claim 15
Independent Claim
74 words
A method for the solution polymerization by addition of vinylidene chloride monomer or a mixture of the latter with one or more other ethylenically unsaturated monomers, which comprises contacting said monomer or mixture of monomers with a catalytic system consisting of an organic per-compound, an organic compound of cobalt and para-toluene sulfonic acid, in an organic solvent medium in which the monomers, the catalytic system and the polymer or copolymer being formed are soluble.
Claim 16
Independent Claim
74 words
A method for the solution polymerization by addition of vinylidene chloride monomer or a mixture of the latter with one or more other ethylenically unsaturated monomers, which comprises contacting said monomer or mixture of monomers with a catalytic system consisting of an organic per-compound, an organic compound of cobalt and para-toluene sulfonic acid, in an organic solvent medium in which the monomers, the catalytic system and the polymer or copolymer being formed are soluble.
Claim 17
Dependent Claim
38 words
The method of claim 14, wherein said other monomers are selected in the group consisting of acrylonitrile, acrylic acid, methacrylic acid, alkyl esters of the acrylic and methacrylic acids and hydroxyalkyl esters of the acrylic and methacrylic acids.
Claim 18
Dependent Claim
15 words
The method of claim 14, wherein the polymerization temperature is from 10° to 35° C.
Claim 19
Dependent Claim
13 words
The method of claim 14, wherein the polymerization temperature is of 25°-30° C.
Claim 20
Dependent Claim
23 words
The method of claim 14, wherein the organic per-compound is selected in the group consisting of the organic peroxides, hydroperoxides, peroxy-acids and peroxy-esters.
Claim 21
Dependent Claim
23 words
The method of claim 14, wherein the organic per-compound is selected in the group consisting of methylethylketone peroxide, benzoyl peroxide and tert-butyl hydroperoxide.
Claim 22
Dependent Claim
29 words
The method of claim 14, wherein the organic per-compound is used in an amount of from 0.01 to 10% by weight with respect to the amount of monomers used.
Claim 23
Dependent Claim
19 words
The method of claim 20, wherein the said amount of organic per-compound is from 0.5 to 3% by weight.
Claim 24
Dependent Claim
36 words
The method of claim 14, wherein the organic compound of cobalt is selected in the group consisting of the salts of aliphatic carboxylic acids and aromatic carboxylic acids and the complexes of cobalt with organic substances.
Claim 25
Dependent Claim
25 words
The method of claim 14, wherein the organic compound of cobalt is selected in the group consisting of the octoates, naphthenates and acetylacetonates of cobalt.
Claim 26
Dependent Claim
36 words
The method of claim 14, wherein the organic compound of cobalt is used in a quanity ensuring an amount of from 0.001 to 0.06% by weight of cobalt with respect to the amount of monomers used.
Claim 27
Dependent Claim
30 words
The method of claim 14, wherein the para-toluene sulfonic acid is used in an amount of from 0.005 to 5% by weight with respect to the amount of monomers used.
Claim 28
Dependent Claim
29 words
The method of claim 14, wherein the organic solvent medium is selected in the group consisting of ketones, ethylene glycol glycolic ethers, acetic acid esters and diethylene glycol monoethers.
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) | 1980-06-13 | 1980-12-13 | 1981-06-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-06-13 | 1984-12-13 | 1985-06-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-06-13 | 1988-12-13 | 1989-06-14 | $7700.00 | Window Closed / Lapsed |