Patent US3666740A successfully refreshed from Google Patents.
US3666740A
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Method of producing high molecular polyallyl alcohol
Assignee: Individual
•
Filing: 1969-08-14
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Granted: 1972-05-30
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Expires: 1989-08-14
Abstract
Abstract A method of producing high-molecular weight polyallyl alcohol by polymerizing allyl alcohol in the presence of an inorganic complexing agent that forms a coordination bond with the functional group of the monomer under the effect of a radical initiator. Suitable complexing agents include salts of metals of Groups I and II of the Periodic Table or acids, e.g., HCl HNO3, H2SO4, etc.
Inventors
- 👤 Valentin Alexeevich Kargin
- 👤 Lev Solomonovich Polak
- 👤 Viktor Alexandrovich Kabanov
- 👤 Vitaly Pavlovich Zubov
- 👤 Valentina Fedorovna Pankova
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 09:41
CPC Classifications
C; C08; C08J; C08J5/00; C08J5/20; C08J5/22; C08J5/2206; C08J5/2218; C08J5/2231; C08J5/2243; B; B26; B26D; B26D1/00; B26D1/01; B26D1/12; B26D1/14; B26D1/24; B26D1/245; C03; C03C; C03C25/00; C03C25/10; C03C25/24; C03C25/26; C08F; C08F16/00; C08J2329/00; C08J2329/02; C08J2329/06
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
14 words
A method as in claim 1 wherein the polymerization is carried out in bulk.
Claim 2
Dependent Claim
26 words
The method of claim 1, wherein the complexing agent is a salt selected from the group consisting of LiCl, LiNO3, CaCl2, Na2SO4, MgCl2, MgSO4, and Mg(ClO4)2.
Claim 3
Dependent Claim
26 words
The method of claim 1, wherein the polymerization of allyl alcohol is carried out in the presence of an inorganic acid in a polar solvent medium.
Claim 4
Dependent Claim
30 words
The method of claim 4, wherein the polar solvent is selected from the group consisting of water, acetone, and a lower aliphatic alcohol having from one to four carbon atoms.
Claim 5
Dependent Claim
39 words
The method of claim 1, wherein the polymerization of allyl alcohol is carried out under the effect of a high energy radiation at a dose rate of 1.107 to 1.1010 rads at a temperature not higher than 200* C.
Claim 6
Dependent Claim
22 words
The method of claim 6, wherein the polymerization of allyl alcohol is carried out under the effect of gamma -rays of Co60.
Claim 7
Dependent Claim
33 words
The method of claim 6, wherein the polymerization of allyl alcohol is carried out under the effect of a mixed radiation of a nuclear reactor, which radiation consists of neutrons and gamma -rays.
Claim 8
Dependent Claim
19 words
The method of claim 6, wherein the polymerization of allyl alcohol is carried out under the effect of X-rays.
Claim 9
Dependent Claim
21 words
The method of claim 6, wherein the polymerization is carried out through the use of fast electrons from an electron accelerator.
Claim 10
Dependent Claim
17 words
The method of claim 6, wherein the polymerization is carried out under the effect of ultraviolet radiation.
Claim 11
Dependent Claim
37 words
The method of claim 1, wherein the polymerization of allyl alcohol is carried out under the effect of substances that decompose into radicals when heated or subjected to ultraviolet radiation at temperatures from 0* to 30* C.
Claim 12
Dependent Claim
32 words
The method of claim 12, wherein the substance decomposing into radicals is a peroxide selected from the group consisting of hydrogen peroxide, benzoyl peroxide, tertiary butyl peroxide, organic percarbonate, and inorganic persulphate.
Claim 13
Dependent Claim
16 words
The method of claim 12, wherein the substance decomposing into radicals is an aliphatic azo compound.
Claim 14
Dependent Claim
39 words
The method of claim 13, wherein the radical initiator is a redox system comprising said peroxide and a reducing agent selected from the group consisting of quinone, aliphatic, aromatic, secondary and tertiary amines, variable valency metals and their salts.
Claim 15
Dependent Claim
14 words
A method as in claim 15 wherein the variable valency metal is divalent iron.
References Cited (Backward Citations)
US2904484A
Cited
US3285897A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-05-30 | 1975-11-29 | 1976-05-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-30 | 1979-11-29 | 1980-05-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-30 | 1983-11-29 | 1984-05-30 | $7700.00 | Window Closed / Lapsed |