US3976603A
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Fluorinated elastomeric polymers containing the 1,3,5-triazine ring, and process for preparing same
Assignee: Montedison SpA
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Filing: 1975-01-22
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Granted: 1976-08-24
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Expires: 1995-01-22
Abstract
Abstract New elastomeric polymers containing, in the chains thereof, perfluoropolyether radicals of linear structure and bound by ether bridges to radicals derived from 1,3,5-triazine are disclosed. The new polymers are obtained by polycondensation of certain glycols or alkaline derivatives thereof with 1,3,5-triazines substituted on the ring by at least two halogen atoms.
Inventors
- 👤 Gerardo Caporiccio
- 👤 Gianangelo Bargigia
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 09:29
CPC Classifications
C; C08; C08G; C08G65/00; C08G65/34; C08G73/00; C08G73/06; C08G73/0622; C08G73/0638; C08G73/0644
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
106 words
Fluorinated elastomeric polymers the perfluoropolyether macromolecular chain of which is made up of a repeating unit ##EQU1## wherein --C 2 F 4 -- is a group resulting from opening of the double bond of a tetrafluoroethylene molecule, --C 2 F 4 O-- and --CF 2 O-- are oxyperfluoroalkylene units randomly distributed along the chain, indexes n and p are integers from 2 to 100, the sum (n+p) is an integer from 5 to 200, the p/n ratio is comprised between 0.2 and 1.5, R is hydrogen, halogen, a hydrocarbon organic non-substituted radical, a halogen-substituted hydrocarbon radical, a primary or secondary amino radical or an alkoxy radical.
Claim 2
Dependent Claim
106 words
Fluorinated elastomeric polymers the perfluoropolyether macromolecular chain of which is made up of a repeating unit ##EQU1## wherein --C 2 F 4 -- is a group resulting from opening of the double bond of a tetrafluoroethylene molecule, --C 2 F 4 O-- and --CF 2 O-- are oxyperfluoroalkylene units randomly distributed along the chain, indexes n and p are integers from 2 to 100, the sum (n+p) is an integer from 5 to 200, the p/n ratio is comprised between 0.2 and 1.5, R is hydrogen, halogen, a hydrocarbon organic non-substituted radical, a halogen-substituted hydrocarbon radical, a primary or secondary amino radical or an alkoxy radical.
Claim 3
Dependent Claim
21 words
Fluorinated elastomeric polymers according to claim 1, in which the sum (n + p) is an integer from 15 to 100.
Claim 4
Dependent Claim
15 words
Elastomeric polymers according to claim 1, in which the halogen is chlorine, bromine or fluorine.
Claim 5
Dependent Claim
44 words
Elastomeric polymers according to claim 1, in which the polydispersity index defined by the ratio Mw/Mn, where Mw is the average weight molecular weight and Mn is the average number molecular weight of the polyfluoropolyether segment, is low and is from 1 to 1.3.
Claim 6
Dependent Claim
17 words
Elastomeric polymers according to claim 1, vulcanized with an organic peroxide at temperatures of from 100°to 180°C.
Claim 7
Dependent Claim
34 words
Elastomeric polymers according to claim 1, in which the triazine ring contains chlorine or fluorine atoms and the polymer is vulcanized by reaction of said atoms with difunctional organic compounds having a nucleophilic action.
Claim 8
Dependent Claim
97 words
A process for preparing the elastomeric polymers according to claim 1, by polycondensation, and characterized in that glycols of the formula HOCH.sub.2 --CF.sub.2 O--(C.sub.2 F.sub.4 O).sub.p --(CF.sub.2 O).sub.n --CF.sub.2 --CH.sub.2 OH in which n and p are integers from 2 to 100, the sum (n + p) is an integer from 5 to 200, and the ratio p/n is from 0.2 to 1.5, or alkaline salts of said glycols, are reacted with 1,3,5-triazine substituted on the ring by at least two halogen atoms, in the presence of solvents and at temperatures from about 20°C to about 250°C.
Claim 9
Dependent Claim
25 words
The process of claim 7, in which two or three halogen atoms are present on the triazine ring and are chlorine, bromine or fluorine atoms.
Claim 10
Dependent Claim
44 words
The process of claim 5, in which the alkaline alcoholates of the glycols are reacted with the triazine compounds in a solvent which is an aromatic hydrocarbon, a low-boiling ether, tetrahydrofuran, dioxane, sulpholan or 1,1,2-trichlorotrifluoroethane, or mixtures thereof, at temperatures of from 20°to 100°C.
Claim 11
Dependent Claim
47 words
The process of claim 5, in which the free glycols and the triazine glycols are reacted at temperatures comprised between 100° and 250°C in a high boiling solvent which is phenylether, a dihalogenated aromatic hydrocarbon, ditolylmethane or decalin, and haloid ether is freed in the gaseous state.
Claim 12
Dependent Claim
17 words
The process of claim 5, in which the haloid ether formed is neutralized with a basic substance.
Claim 13
Dependent Claim
16 words
The process of claim 5, in which the polycondensation product is crosslinked with an organic peroxide.
Claim 14
Dependent Claim
35 words
The process of claim 5, in which the glycol, or alkaline alcoholate of the glycol, is polycondensed with a trihalogen-substituted triazine and the product is crosslinked with a disfunctional organic compound having a nucleophile action.
Claim 15
Dependent Claim
14 words
The polymers of claim 1, vulcanized and in the form of manufactured shaped articles.
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) | 1979-08-24 | 1980-02-23 | 1980-08-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-08-24 | 1984-02-23 | 1984-08-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-08-24 | 1988-02-23 | 1988-08-24 | $7700.00 | Window Closed / Lapsed |