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US4144211A
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Novel complexes of polyoxazolines or polyoxazines and halogens, interhalogens or pseudo-halogens and process for preparing same
Assignee: Dow Chemical Co
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Filing: 1977-09-06
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Granted: 1979-03-13
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Expires: 1997-09-06
Abstract
Abstract Novel solid complexes of 2-oxazoline and 2-oxazine polymers and halogens, interhalogens or pseudo-halogens are prepared by contacting a poly-2-oxazoline or poly-2-oxazine whose backbone comprises a plurality of ring-opened units of an oxazoline or oxazine monomer of the general formula ##STR1## wherein R and R 1 -R 4 are each independently hydrogen, alkyl, aralkyl, phenyl or inertly-substituted phenyl and n is zero or one with a halogen, interhalogen or pseudo-halogen. The complexes are soluble in a variety of conventional solvents (e.g., water, methylene chloride, acetonitrile, methanol, tetrahydrofuran and isopropanol).
Inventors
- 👤 Thomas A. Chamberlin
- 👤 Sonia W. Bangs
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 17:07
CPC Classifications
C; C08; C08G; C08G73/00; C08G73/02; C08G73/0233; C08L; C08L79/00; C08L79/04
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
16 words
A solid complex comprising (a) a poly-2-oxazoline or poly-2-oxazine, and (b) a halogen, interhalogen or pseudo-halogen.
Claim 2
Dependent Claim
16 words
A solid complex comprising (a) a poly-2-oxazoline or poly-2-oxazine, and (b) a halogen, interhalogen or pseudo-halogen.
Claim 3
Dependent Claim
54 words
The complex defined by claim 1 wherein said poly-2-oxazoline or poly-2-oxazine is a polymer comprising a plurality of ring-opened units of a 2-oxazoline or 2-oxazine monomer corresponding to the formula: ##STR6## wherein R and R 1 -R 4 are each independently hydrogen, alkyl, aralkyl, phenyl, or inertly-substituted phenyl and n is zero or one.
Claim 4
Dependent Claim
22 words
The complex defined by claim 2 wherein R 1 -R 4 are each hydrogen and R is hydrogen, phenyl or lower alkyl.
Claim 5
Dependent Claim
10 words
The complex defined by claim 3 wherein (a) is poly(2-ethyl-2-oxazoline).
Claim 6
Dependent Claim
11 words
The complex defined by claim 1 wherein (b) is a halogen.
Claim 7
Dependent Claim
12 words
The complex defined by claim 5 wherein (b) is iodine or bromine.
Claim 8
Dependent Claim
53 words
The complex defined by claim 1 wherein (b) is an interhalogen corresponding to the formula XX' n , wherein X and X' are F, Cl, Br or I, n is an odd numbered integer greater than or equal to one and X' is the lighter halogen atom when n is greater than one.
Claim 9
Dependent Claim
11 words
The complex defined by claim 7 wherein (b) is bromine chloride.
Claim 10
Dependent Claim
19 words
The complex defined by claim 1 wherein (b) is a pseudo-halogen containing at least two cyano or thiocyano groups.
Claim 11
Dependent Claim
12 words
The complex defined by claim 9 wherein (b) is cyanogen or thiocyanogen.
Claim 12
Dependent Claim
26 words
The complex defined by claim 2 wherein (a) is poly(2-ethyl-2-oxazoline) having a molecular weight up to about 500,000 and (b) is iodine, bromine or bromine chloride.
Claim 13
Dependent Claim
31 words
A process for preparing the complex defined by claim 1 comprising reacting by contacting said halogen, interhalogen or pseudo-halogen and said poly-2-oxazoline or poly-2-oxazine in a liquid substantially non-aqueous organic solvent.
Claim 14
Dependent Claim
12 words
The process defined by claim 12 wherein said solvent is methylene chloride.
Claim 15
Dependent Claim
10 words
An aqueous solution of the complex defined by claim 1.
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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) | 1982-03-12 | 1982-09-11 | 1983-03-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-03-12 | 1986-09-11 | 1987-03-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-03-12 | 1990-09-11 | 1991-03-13 | $7700.00 | Window Closed / Lapsed |