Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Polymer of an ethylenically unsaturated reactant with a...
Patent
1999-09-29
2000-10-17
Acquah, Samuel A.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Polymer of an ethylenically unsaturated reactant with a...
528405, 524706, 524709, 524710, 524711, 524841, 524845, 524849, C08G 6702, C08J 302
Patent
active
061334103
DESCRIPTION:
BRIEF SUMMARY
The present invention relates to linear, alternating .alpha.-olefin-CO copolymers obtainable by polymerization of a monomer mixture comprising unit or cryptand unit A containing at least heteroatoms selected from the group consisting of nitrogen, oxygen, sulfur and selenium in the polyheteroatom framework, and, if desired,
The invention further relates to a process for preparing the functionalized .alpha.-olefin-CO copolymers and also to their use for producing moldings, films, fibers and coatings. The invention also relates to ion-selective membranes which can be produced from the functionalized .alpha.-olefin-CO copolymers and their use as a constituent of ion-selective electrodes or chemically modified field effect transistors.
Binary and ternary .alpha.-olefin-CO copolymers (carbon monoxide copolymers) have been adequately described in the specialized literature. For example, EP-B 121 965 discloses ethene-CO copolymers, EP-A 416 681 discloses ethene-propene-CO copolymers. Carbon monoxide copolymers made up of carbon monoxide and 1-butene or 1-hexene (cf. U.S. Pat. No. 5,352,767) and also carbon monoxide terpolymers with longer-chain .alpha.-olefins have already been described (cf. unpublished German Patent Application 19649072.3).
While conventional carbon monoxide-ethene copolymers are hard but brittle and are now used as engineering plastics, carbon monoxide copolymers having high mean molecular weights M.sub.w (above 80,000 g/mol) (cf. the unpublished German Patent Application 196 10 358.4) or carbon monoxide copolymers comprising long-chain .alpha.-olefin units (>C.sub.6) also make it possible to obtain molding compositions having a thermoplastic, elastomeric property profile, ie. copolymers whose glass transition temperatures (T.sub.g) are less than 20.degree. C.
The range of applications of the known carbon monoxide copolymers is kept within narrow limits by the selection of the monomer components which form them.
It would therefore be desirable to be able to incorporate precisely those monomer components which help to eliminate the disadvantages, eg. the brittleness, arising from the carbon monoxide framework and which at the same time offer the opportunity of obtaining novel molding compositions which are also suitable for complex special applications by exploiting the properties given by just this basic framework, ie. having hydrophobic behavior and nevertheless being relatively polar.
It is an object of the present invention to find novel carbon monoxide copolymers which, as a result of selection of the monomer components, have a combination of matched properties in the product and are therefore suitable for complex applications. In particular, it is an object of the invention to provide ion-selective membranes which consist essentially of the carbon monoxide copolymers of the present invention or have these as essential constituents and which do not have the indicated disadvantages of such membranes or membrane systems.
We have found that this object is achieved by means of the carbon monoxide copolymers described in the introduction. Furthermore, we have found a process for preparing the carbon monoxide copolymers of the present invention and their use for the production of fibers, moldings, coatings, films and ion-selective membranes. We have also found ion-selective membranes based on the carbon monoxide copolymers of the present invention and their use as constituents of ion-selective electrodes or chemically modified field effect transistors.
Preference is given to .alpha.-olefin-CO copolymers which can be prepared by copolymerization of the components unit A containing from 5 to 10 oxygen atoms, and
Particular preference is given to .alpha.-olefin-CO copolymers which are obtainable by copolymerization of carbon monoxide (a)), a functionalized 1-alkene (b)) of the formula (I) ##STR1## where ##STR2## where the substituents and indices have the following meanings: Q=1,2-cyclohexyl or 1,2-phenyl, to 16,
The copolymers of the present invention are made up of units which are derived from
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Abu-Surrah Adnan S.
Eibeck Peter
Geprags Michael
Klok Harm-Anton
Moller Martin
Acquah Samuel A.
BASF - Aktiengesellschaft
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