US3723404A
Expired / Lapsed
US
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Chloronitrosylated polymers and a process for the preparation thereof
Assignee: BASF Corp
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Filing: 1970-01-21
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Granted: 1973-03-27
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Expires: 1990-01-21
Abstract
Abstract Polymers containing chlorine and nitrogen atoms are prepared by the reaction of a hydrocarbon polymer with nitrosyl chloride or chlorine and nitric oxide. The resulting polymers may be crosslinked with heat to provide polymers having improved physical properties.
Inventors
- 👤 P Davis
- 👤 H Vogt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 19:53
CPC Classifications
B; B21; B21D; B21D39/00; B21D39/03; C; C08; C08C; C08C19/00; C08C19/22
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
22 words
The process of claim 1 wherein the solvent is selected from the group consisting of carbon tetrachloride, benzene, chloroform and mixtures thereof.
Claim 2
Dependent Claim
10 words
The process of claim 1 wherein the catalyst is light.
Claim 3
Dependent Claim
12 words
The process of claim 1 wherein the catalyst is a free-radical catalyst.
Claim 4
Dependent Claim
11 words
The process of claim 1 wherein the polymer is a polyolefin.
Claim 5
Dependent Claim
10 words
The process of claim 1 wherein the polymer is polyethylene.
Claim 6
Dependent Claim
27 words
A process for the chloronitrosylation of polyethylene which comprises dissolving said polyethylene in a solvent and reacting said polyethylene with nitrosyl chloride in the presence of light.
Claim 7
Dependent Claim
70 words
A chloronitrosylated polymer selected from the group consisting of polyolefins, chlorinated polyolefins, polystyrenes and polyvinyl halides, said chloronitrosylated polymer having a chlorine content of from 0.05 percent to 83 percent by weight, a nitrogen content of from 0.1 percent to 5 percent by weight, and prepared by contacting in the presence of a catalyst said polymer with nitrosyl chloride or chlorine and nitric oxide in the presence of a solvent.
Claim 8
Dependent Claim
23 words
A cross-linked chloronitrosylated polymer obtained by heating to a temperature of from 75* C. to 225* C. the chloronitrosylated polymer of claim 8.
Claim 9
Dependent Claim
16 words
The polymer of claim 9 when heating is carried out in the presence of a filler.
References Cited (Backward Citations)
US2964517A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-03-26 | 1976-09-25 | 1977-03-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-03-26 | 1980-09-25 | 1981-03-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-03-26 | 1984-09-25 | 1985-03-27 | $7700.00 | Window Closed / Lapsed |