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(12) Patent: | (11) CA 1054637 |
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(21) Application Number: | 219412 |
(54) English Title: | 1,2,3,4,-TETRAKIS (PERFLUOROALKYL)-1,3,-BUTADIENES AND THEIR PREPARATION |
(54) French Title: | TETRAKIS (PERFLUOROALKYL)-1,2,3,4 BUTADIENES-1,3 ET LEUR PREPARATION |
Status: | Expired |
(52) Canadian Patent Classification (CPC): |
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(51) International Patent Classification (IPC): |
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(72) Inventors : |
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(73) Owners : |
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(71) Applicants : | |
(74) Agent: | |
(74) Associate agent: | |
(45) Issued: | 1979-05-15 |
(22) Filed Date: | |
Availability of licence: | N/A |
(25) Language of filing: | French |
Patent Cooperation Treaty (PCT): | No |
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(30) Application Priority Data: | None |
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PRECIS DE LA DIVULGATION :
Procédé de préparation de tetrakis (perfluoroalkyl)-
1,2,3,4 butadiènes-1,3 de la forme:
Image
où RF et R? peuvent être identiques ou différents et sont de la
forme CF3 - (CF2)n-, n étant un nombre entier compris entre 1
et 10, par dimérisation d'un bis (perfluoroalkyl)- 1,2 iodoéthy-
lène de la forme RF - CH = CI - R?. Ces produits peuvent être
utilisés comme transporteurs de gaz dissous.
Note: Claims are shown in the official language in which they were submitted.
Note: Descriptions are shown in the official language in which they were submitted.
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Title | Date |
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Forecasted Issue Date | 1979-05-15 |
(45) Issued | 1979-05-15 |
Expired | 1996-05-15 |
There is no abandonment history.
Note: Records showing the ownership history in alphabetical order.
Current Owners on Record |
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PRODUITS CHIMIQUES UGINE KUHLMANN |
Past Owners on Record |
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None |