Linear copolymers of fluorocarbon and hydrocarbon monomers. The present
invention provides linear copolymers and terpolymers of fluorocarbon and
hydrocarbon monomers, and particularly the invention provides a linear
copolymers, of fluoromonomers, such as tetrafluoroethylene,
chlorotrifluoroethylene, or vinylidene fluoride, with hydrocarbon
monomers, such as vinyl acetate, acrylic acid ethyl acetate or tertiary
butyl acrylate. The copolymers were synthesized by polymerization by a
free radical mechanism in supercritical carbon dioxide and they are linear
because of synthesis in carbon dioxide. The copolymer composition was
controlled by the monomer feed concentration to have between 7 and 71 mol
% TFE. Additionally, new and predominantly linear co- and terpolymers were
prepared by hydrolysis and trans-esterification of the latter copolymers.
Furthermore, neither surfactants nor dispersing agents are required to
produce the linear copolymers, but may be used.
Copolymers lineares de monomers do fluorocarbon e do hidrocarboneto. A invenção atual fornece copolymers e terpolymers lineares de monomers do fluorocarbon e do hidrocarboneto, e particularmente a invenção fornece copolymers lineares, dos fluoromonomers, tais como o tetrafluoroethylene, o chlorotrifluoroethylene, ou o fluoreto do vinylidene, com os monomers do hidrocarboneto, tais como o acetato do vinil, o acetato ethyl ácido acrílico ou o acrylate butyl tertiary. Os copolymers synthesized pela polimerização por um mecanismo do radical livre no dióxido de carbono supercritical e são lineares por causa da síntese no dióxido de carbono. A composição do copolymer foi controlada pela concentração da alimentação do monomer para ter entre 7 e 71 mol de % de TFE. Adicionalmente, os co- novos e predominantly lineares e os terpolymers foram preparados pelo hydrolysis e pelo trans-esterification dos últimos copolymers. Além disso, nem os surfactants nem os agentes dispersando-se são requeridos para produzir os copolymers lineares, mas podem ser usados.
