US3879353A
Expired / Lapsed
US
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Linear copolymers having pendant peroxycarbonate ester functionality, their synthesis and use
Assignee: OI Glass Inc
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Filing: 1973-01-15
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Granted: 1975-04-22
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Expires: 1993-01-15
Abstract
Abstract Multifunctional peroxycarbonate esters are prepared by reacting a salt of a linear copolymer, having acid functionality, with a carbonate under oxidizing conditions. The process of this invention can be adapted to permit the in situ generation of the peroxycarbonate ester in a suspension, solution or emullsion polymerization system. Peroxycarbonate esters prepared in this manner are useful as initiators in the free radical polymerization of ethylenically unsaturated monomers, as well as agents for the cross-linking of linear polymeric chains.
Inventors
- 👤 James E Crawford
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 02:26
CPC Classifications
C; C08; C08F; C08F4/00; C08F4/28; C08F4/32; C08F8/00; C08F8/10; Y; Y10; Y10S; Y10S260/00; Y10S260/28
Claims Analysis
Total Claims: 27
Claim 1
Independent Claim
38 words
A PROCESS FOR THE PREPARATION OF A LINEAR COPOLYMER HAVING PENDANT PEROXYCARBONATE ESTER FUNCTIONALITY FROM AN ACID SALT OF A LINEAT COPOLYMER AND A CARBONATE, WHICH COMPRISES: MIXING THE ACID SALT OF A LINEAR COPOLYMER OF THE FORMULA
Claim 2
Dependent Claim
38 words
A PROCESS FOR THE PREPARATION OF A LINEAR COPOLYMER HAVING PENDANT PEROXYCARBONATE ESTER FUNCTIONALITY FROM AN ACID SALT OF A LINEAT COPOLYMER AND A CARBONATE, WHICH COMPRISES: MIXING THE ACID SALT OF A LINEAR COPOLYMER OF THE FORMULA
Claim 3
Dependent Claim
38 words
A process for the preparation of a linear copolymer having pendant peroxycarbonate ester functionality from an acid salt of a linear copolymer and a carbonate, which comprises: mixing the acid salt of a linear copolymer of the formula
Claim 4
Dependent Claim
38 words
A process for the preparation of a linear copolymer having pendant peroxycarbonate ester functionality from an acid salt of a linear copolymer and a carbonate, which comprises: mixing the acid salt of a linear copolymer of the formula
Claim 5
Dependent Claim
19 words
The process as defined in claim 1, wherein the linear copolymer salt is derived from an ethylene-acrylic acid copolymer.
Claim 6
Dependent Claim
19 words
The process as defined in claim 1, wherein the linear copolymer salt is derived from an ethylene-maleic anhydride copolymer.
Claim 7
Dependent Claim
19 words
The process as defined in claim 1, wherein the linear copolymer salt is derived from a styrene-acrylic acid copolymer.
Claim 8
Dependent Claim
19 words
The process as defined in claim 1, wherein the linear copolymer salt is derived from a styrene-maleic anhydride copolymer.
Claim 9
Dependent Claim
20 words
The process as defined in claim 1, wherein the linear copolymer salt is derived from a vinyl ether-maleic anhydride copolymer.
Claim 10
Dependent Claim
13 words
The process as defined in claim 1 wherein the carbonate is ethylene chlorocarbonate.
Claim 11
Dependent Claim
12 words
The process as defined in claim 1, wherein the carbonate is ethylchlorocarbonate.
Claim 12
Dependent Claim
12 words
The process as defined in claim 1 wherein hydrogen peroxide is employed.
Claim 13
Dependent Claim
36 words
The process as defined in claim 1, wherein the mixture of acid salt of a linear copolymer and carbonate are heated to a temperature about 150C.* below the thermal decomposition point of the multifunctional peroxycarbonate ester.
Claim 14
Dependent Claim
70 words
A method for the initiation of free radical polymerization of ethylenically unsaturated monomers with a peroxycarbonate Ester, comprising: a. contacting an ethylenically unsaturated monomer in an aqueous medium with an effective polymerization initiating amount of a linear copolymer having pendant peroxycarbonate ester functionality produced in accordance with the process of claim 1 b. generating free radicals by destabilization of peroxide groups of said linear copolymer having pendant peroxycarbonate ester functionality.
Claim 15
Dependent Claim
41 words
The method for the initiation of free radical polymerization as defined in claim 11, wherein free radicals are generated by thermal destabilization of the peroxide groups of the peroxycarbonate ester by heating at temperatures sufficient to cause cleavage of peroxide bonds.
Claim 16
Dependent Claim
45 words
The method for initiation of free radical polymerization as defined in claim 11, wherein free radicals are generated by photochemical destabilization of the peroxide groups of the peroxycarbonate ester by exposure to ultra violet light for an interval sufficient to cause cleavage of peroxide bonds.
Claim 17
Dependent Claim
42 words
The method for the initiation of free radical polymerization as defined in claim 11, wherein the peroxycarbonate ester is the product of the reaction of a stoichiometric amount of a linear copolymer salt of ethyleneacrylic acid and a stoichiometric amount of ethylchlorocarbonate.
Claim 18
Dependent Claim
42 words
The method for the initiation of free radical polymerization as defined in claim 11, wherein the peroxycarbonate ester is the product of the reaction of a stoichiometric amount of a salt of an ethylene-maleic anhydride copolymer and a stoichiometric amount of ethylchlorocarbonate.
Claim 19
Dependent Claim
42 words
The method for the initiation of free radical polymerization as defined in claim 11, wherein the peroxycarbonate ester is the product of the reaction of a stoichiometric amount of a salt of a styrene-acrylic acid copolymer and a stoichiometric amount of ethylchlorocarbonate.
Claim 20
Dependent Claim
42 words
The method for the initiation of free radical polymerization as defined in claim 11, wherein the peroxycarbonate ester is the product of the reaction of a stoichiometric amount of a salt of a styrene-maleic anhydride copolymer ad a stoichiometric amount of ethylchlorocarbonate.
Claim 21
Dependent Claim
43 words
The method for the initiation of free radical polymerization as defined in claim 11, wherein the peroxycarbonate ester is the product of the reaction of a stoichiometric amount of a salt of a vinyl ether-maleic anhydride copolymer and a stoichiometric amount of ethylchlorocarbonate.
Claim 22
Dependent Claim
24 words
As a composition of matter a linear copolymer having pendant peroxycarbonate ester functionality said composition being the product of the process of claim 1.
Claim 23
Dependent Claim
28 words
The composition of claim 19 wherein said acid salt of a linear copolymer is an acid salt of a linear copolyer of acrylic acid with ethylene or styrene.
Claim 24
Dependent Claim
29 words
The composition of claim 19 wherein acid salt of a linear copolymer is an acid salt of a linear copolymer of maleic anhydride with styrene, ethylene, or vinyl ether.
Claim 25
Independent Claim
44 words
A method for the preparation of a linear copolymer having pendant peroxycarbonate ester functionality capable of initiating free radical polymerization which comprises reacting in a aqueous medium an acid salt of a linear copolymer having pendant acid functionality with a carbonate of the formula
Claim 26
Independent Claim
44 words
A method for the preparation of a linear copolymer having pendant peroxycarbonate ester functionality capable of initiating free radical polymerization which comprises reacting in a aqueous medium an acid salt of a linear copolymer having pendant acid functionality with a carbonate of the formula
Claim 27
Dependent Claim
11 words
As a composition of matter the reaction product of claim 22.
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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 |