US 6,335,408 B1 · Copolymers of perfluorodioxoles

Abstract

Copolymers of perfluoro-4-alkyl-1,3-dioxoles having the general formula wherein Rf is a perfluoroalkylic radical having from 1 to 5 carbon atoms, allow to prepare copolymers with Tg higher than those of the copolymers containing the same molar percentage of fluorinated dioxoles of the art.

Claims0

Dependent claims

Claims aren’t available for this document.

Facts

Application

09/249,853Filed 16 Feb 1999

Granted

1 Jan 2002

Term ends

Not estimatedThe source records don’t support an estimate.

Classification11 codes

C07D 317/32
Not condensed with other rings: with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen,…
C04B 24/12
Use of organic materials as active ingredients for mortars, concrete or artificial stone, e.g. plasticisers: nitrogen containing compounds organic…
C04B 40/0039
Aspects relating to the mixing step of the mortar preparation: premixtures of ingredients
C07D 317/42
With hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals,…:…

Copolymers of perfluorodioxoles

Life of this patent

Abstract

Claims0

Copolymers of perfluorodioxoles

Life of this patent

Abstract

Claims0