US3673168A
Expired / Lapsed
US
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Polymerization process
Assignee: BURKE OLIVER W JUN
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Filing: 1970-01-22
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Granted: 1972-06-27
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Expires: 1990-01-22
Abstract
Abstract A process for forming polymer material having terminal hydroxyl groups and a number average molecular weight in the range of 500 to 10,000, by (A) forming a single phase polymerization system consisting essentially of hydrogen peroxide, specified vinylidene monomer and/or conjugated diene monomer, and liquid organic mutual solvent diluent comprising at least a major proportion of lower aliphatic saturated oxygenated solvent selected from the alcohols, ether alcohols, keto alcohols and ketones, which system is essentially free of materials that decompose hydrogen peroxide to form oxygen at below 100* C., and (B) heating said system to temperatures sufficiently above 100* C. to initiate and effect polymerization in said system.
Inventors
- 👤 Oliver W Burke Jr
- 👤 Joseph Austin A Kizer
- 👤 Pauls Davis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 16:21
CPC Classifications
C; C08; C08F; C08F2/00; C08F2/04; C08F2/06; C08F36/00; C08F36/02; C08F36/04
Claims Analysis
Total Claims: 35
Claim 1
Independent Claim
32 words
A method according to claim 1, wherein at least the major proportion of the liquid organic mutual solvent is selected from those of said class of solvents which contain alcoholic hydroxyl groups.
Claim 2
Dependent Claim
3 words
hydrogen peroxide, and
Claim 3
Dependent Claim
3 words
hydrogen peroxide, and
Claim 4
Dependent Claim
13 words
between 0.5-10 parts by weight of hydrogen peroxide per 100 parts of monomer,
Claim 5
Dependent Claim
12 words
between 0.5-10 parts by weight of hydrogen peroxide per part of monomer,
Claim 6
Dependent Claim
13 words
between 0.5-10 parts by weight of hyDrogen peroxide per 100 parts of monomer,
Claim 7
Dependent Claim
102 words
a liquid organic mutual solvent-diluent for all the monomer material present and said hydrogen peroxide and any water present, said liquid organic mutual solvent diluent comprising at least a major proportion of lower aliphatic saturated oxygenated solvent selected from the class consisting of the water miscible alcohols, ether-alcohols, keto-alcohols and ketones, said system being essentially free of oxygen and of components that decompose hydrogen peroxide to form oxygen at less than 100* C., and B. heating said system at sufficient temperatures in the range of from above 100* C. to about 200* C. for a sufficient time to initiate and effect polymerization.
Claim 8
Dependent Claim
81 words
a liquid organic solvent for all the monomer material present and said peroxide and any water present, said organic solvent having at least one group selected from the class consisting of carbinol and keto groups, said system being maintained essentially free of components which, if present, would initiate polymerization in the system at less than 100* C., and B. heating said system to sufficiently high temperatures in the range of from above 100* C. to about 200* C. to effect polymerization.
Claim 9
Dependent Claim
72 words
a liquid organic solvent for all the monomer material present and said peroxide and any water present, said organic solvent having at least one group selected from the class consisting of carbinol and keto groups, said system being maintained free of components that decompose hydrogen peroxide at less than 100* C., and heating said system to temperatures in the range of from above 100* C. to about 200* C. to effect polymerization.
Claim 10
Dependent Claim
38 words
a sufficient quantity of liquid organic mutual solvent-diluent to produce a homogeneous solution of (1), (2) and (3) said quantity comprising at least 5 ml of mutual solvent-diluent per 100 grams of said monomer material; in which combination
Claim 11
Dependent Claim
38 words
a sufficient quantity of liquid organic mutual solvent-diluent to produce a homogeneous solution of (1), (2) and (3) said quantity comprising at least 5 ml of mutual solvent-diluent per 100 grams of said monomer material; in which combination
Claim 12
Dependent Claim
26 words
A method according to claim 1, wherein at least the major proportion of the liquid organic mutual solvent is selected from the C1 to C4 alcohols.
Claim 13
Dependent Claim
20 words
A method according to claim 1, wherein at least the major proportion of the liquid organic mutual solvent is isopropanol.
Claim 14
Dependent Claim
10 words
said ethylenically unsaturated monomer material consists essentially of conjugated diene;
Claim 15
Dependent Claim
9 words
said ethylenically unsaturated monomer material consists essentially of butadiene-1,3;
Claim 16
Dependent Claim
31 words
the ratio of said hydrogen peroxide to said ethylenically unsaturated monomer material lies in the range of about 0.5 to about 10 parts per 100 parts of monomer, by weight; and
Claim 17
Dependent Claim
31 words
the ratio of said hydrogen peroxide to said ethylenically unsaturated monomer material lies in the range of about 0.5 to about 10 parts per 100 parts of monomer, by weight; and
Claim 18
Dependent Claim
35 words
A method according to claim 1, wherein the ethylenically unsaturated monomer material with which the single phase is formed is selected from those of the designated monomers which contain not more than 14 carbon atoms.
Claim 19
Dependent Claim
36 words
A method according to claim 5, wherein the ethylenically unsaturated monomer material with which the single phase is formed consists essentially of monomer selected from the class consisting of the vinylidene monomers and conjugated diene monomers.
Claim 20
Dependent Claim
113 words
said liquid organic mutual solvent-diluent comprises at least a major proportion of lower aliphatic saturated oxygenated solvent; and B. heating said combination, essentialLy in the absence of oxygen or material which appreciably decomposes hydrogen peroxide to form oxygen, at a sufficient temperature in the range of above 100* C. to about 200* C. for a sufficient time to initiate and maintain polymerization to form, from said combination, polymer material containing substituent groups including hydroxyl groups derived from the solution of the said hydrogen peroxide in the said liquid organic mutual solvent, which polymer material has a number average molecular weight in the aforesaid range, and has its polymerized diene units predominantly of 1,4-configuration.
Claim 21
Dependent Claim
112 words
said liquid organic mutual solvent-diluent comprises at least a major proportion of lower aliphatic saturated oxygenated solvent; and B. heating said combination, essentially in the absence of material which appreciably decomposes hydrogen peroxide to form oxygen, at a sufficient temperature in the range of above 100* C. to about 200* C. for a sufficient time to initiate and maintain polymerization to form, from said combination, polymer material containing substituent groups including hydroxyl groups derived from the solution of the said hydrogen peroxide in the said liquid organic mutual solvent, which polymer material has a number average molecular weight in the aforesaid range, and has its polymerized diene units predominantly of 1, 4-configuration.
Claim 22
Dependent Claim
28 words
A method according to claim 6, wherein the ethylenically unsaturated monomer material with which the single phase is formed consists at least 2 percent of conjugated diene monomer.
Claim 23
Dependent Claim
27 words
A method according to claim 6, wherein the ethylenically unsaturated monomer material with which the single phase is formed consists at least 2 percent of vinylidene monomer.
Claim 24
Dependent Claim
28 words
A method according to claim 6, wherein the ethylenically unsaturated monomer material with which the single phase is formed consists at least 98 percent of conjugated diene monomer.
Claim 25
Dependent Claim
27 words
A method according to claim 6 wherein the ethylinically unsaturated monomer materials with which the single phase is formed consists at least 98 percent of vinylidene monomer.
Claim 26
Dependent Claim
64 words
A process for forming unsaturated polymer material having a number average molecular weight in the range of from 500 to 10, 000 and substantially free from polymer material of higher molecular weight range, said polymer material consisting essentially of conjugated diene polymer having substituent groups as hereinafter designated, which process comprises A. forming a single phase polymerization system consisting essentially of a combination of
Claim 27
Dependent Claim
63 words
A process for forming unsaturated polymer material having a number average molecular weight in the range of from 500 to 10, 000 and substantially free from polymer material of higher molecular weight range, said polymer material consisting essentially of butadiene polymer having substituent groups as hereinafter designated, which process comprises A. forming a single phase polymerization system consisting essentially of a combination of
Claim 28
Independent Claim
34 words
A method for forming a polymer material having terminal hydroxyl groups and a number average molecular weight of not over 10,000, which method comprises forming a single phase polymerization system of a combination of
Claim 29
Dependent Claim
15 words
A method according to claim 13, wherein the monomer material consist essentially of vinylidene monomer.
Claim 30
Dependent Claim
15 words
A method according to claim 13, wherein said liquid organic mutual solvent comprises an alkanol.
Claim 31
Dependent Claim
21 words
A method according to claim 13, wherein said liquid organic mutual solvent comprises an alkanol containing not over four carbon atoms.
Claim 32
Dependent Claim
14 words
A method according to claim 13, wherein said liquid organic mutual solvent comprises isopropanol.
Claim 33
Independent Claim
37 words
A method for forming a polymer material having terminal hydroxyl groups and a number average molecular weight of not over 10,000, which method comprises A. forming a single phase polymerization system consisting essentially of a combination of
Claim 34
Dependent Claim
30 words
A method as claimed in claim 7, wherein said ethylenically unsaturated monomer material further comprises acrylonitrile, and the polymer material formed is an unsaturated butadiene-acrylonitrile interpolymer having said terminal groups.
Claim 35
Dependent Claim
30 words
A method as claimed in claim 7, wherein said ethylenically unsaturated monomer material further comprises sytrene, and the polymer material formed is an unsaturated butadiene-styrene interpolymer having said terminal groups.
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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) | 1975-06-27 | 1975-12-27 | 1976-06-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-27 | 1979-12-27 | 1980-06-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-27 | 1983-12-27 | 1984-06-27 | $7700.00 | Window Closed / Lapsed |