US3960813A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Zinc chloride as catalyst for epoxy/adnc blends
Assignee: Atlantic Richfield Co
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Filing: 1974-02-13
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Granted: 1976-06-01
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Expires: 1994-02-13
Abstract
Abstract A polyoxazolidone composition is prepared by heating a reaction mixture comprised of a cyclic nitrile compound, an epoxide, a metal halide catalyst, and, optionally, a polyhydroxyl, polyamine or polythiol containing compound. The reaction mixture may be stable at normal handling and storage temperatures and may be in the form of a dry powder or a liquid.
Inventors
- 👤 Donald H. Russell
- 👤 R. Warren Lenton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 21:30
CPC Classifications
C; C08; C08G; C08G59/00; C08G59/18; C08G59/40; C08G59/50; C08G59/5046; C08G59/4007; C08G59/4064; C08G59/68
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
104 words
A storage-stable polyoxazolidone-forming composition comprised of A. a cyclic nitrile compound having the structural formula ##EQU10## wherein X is ##EQU11## R is an organic radical free of reactive hydrogens as determined by the Zerewitinoff Test and n is at least 2, B. an oxirons epoxide, and C. about 0.1 to 5% based on the total weight of (A) and (B) of a halide of a metal of Groups IIb, IIIa, IVa, and VIII of the Periodic Table, the cyclic nitrile compound and the epoxide being present in amounts such that the ratio of cyclic nitrile groups to epoxy groups is about 0.7 to 10:1.
Claim 2
Dependent Claim
104 words
A storage-stable polyoxazolidone-forming composition comprised of A. a cyclic nitrile compound having the structural formula ##EQU10## wherein X is ##EQU11## R is an organic radical free of reactive hydrogens as determined by the Zerewitinoff Test and n is at least 2, B. an oxirons epoxide, and C. about 0.1 to 5% based on the total weight of (A) and (B) of a halide of a metal of Groups IIb, IIIa, IVa, and VIII of the Periodic Table, the cyclic nitrile compound and the epoxide being present in amounts such that the ratio of cyclic nitrile groups to epoxy groups is about 0.7 to 10:1.
Claim 3
Dependent Claim
15 words
The composition of claim 1 wherein (B) has at least 2 epoxy groups per molecule.
Claim 4
Dependent Claim
26 words
The composition of claim 1 wherein (C) is present in an amount of about 0.1 to 2% based on the total weight of (A) and (B).
Claim 5
Dependent Claim
25 words
The composition of claim 1 wherein (C) is a halide of a metal selected from the group consisting of zinc, cadmium, aluminum, tin, and iron.
Claim 6
Dependent Claim
14 words
The composition of claim 4 wherein said halide is a chloride or a bromide.
Claim 7
Dependent Claim
12 words
The composition of claim 5 wherein said metal halide is zinc chloride.
Claim 8
Dependent Claim
33 words
The composition of claim 1 further including at least one organic compound having at least two groups per molecule selected from the class consisting of organic polyols, organic polythiols, and mixtures of these.
Claim 9
Dependent Claim
18 words
The composition of claim 1 in powder form having a particle size of about 10 to 500 microns.
Claim 10
Dependent Claim
15 words
The composition of claim 8 having a particle size of about 50 to 250 microns.
Claim 11
Dependent Claim
8 words
The composition of claim 1 in liquid form.
Claim 12
Dependent Claim
12 words
The composition of claim 1 dissolved in an inert, volatile organic solvent.
Claim 13
Dependent Claim
20 words
The composition of claim 1 wherein the ratio of cyclic nitrile groups to epoxy groups is about 0.7 to 1.4:1.
Claim 14
Dependent Claim
22 words
The composition of claim 1 wherein X is ##EQU12## R contains 2 to 50 carbon atoms, and n is 2 to 6.
Claim 15
Dependent Claim
10 words
The composition of claim 13 wherein (A) is adipodi(nitrile carbonate).
Claim 16
Dependent Claim
13 words
The composition of claim 14 wherein (C) is zinc chloride or zinc bromide.
Claim 17
Dependent Claim
12 words
The composition of claim 2 wherein (B) is diglycidyl ether of p,p'-dihydroxydiphenyldimethylmethane.
Claim 18
Dependent Claim
10 words
The composition of claim 16 wherein (A) is adipodi(nitrile carbonate).
Claim 19
Dependent Claim
10 words
The composition of claim 17 wherein (C) is zinc chloride.
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) | 1979-06-01 | 1979-12-01 | 1980-06-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-06-01 | 1983-12-01 | 1984-06-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-06-01 | 1987-12-01 | 1988-06-01 | $7700.00 | Window Closed / Lapsed |