Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Polymer of an ethylenically unsaturated reactant with a...
Patent
1997-11-06
1999-04-06
Acquah, Samuel A.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Polymer of an ethylenically unsaturated reactant with a...
524115, 524129, 524183, 524709, 502162, C08G 6702
Patent
active
058919899
DESCRIPTION:
BRIEF SUMMARY
The present invention relates to copolymers of carbon monoxide and olefinically unsaturated compounds, obtainable by polymerization of the monomers in the presence of a metal complex of the formula (I) ##STR2## where the substituents and indices have the following meanings: M is a metal from group VIIIB of the Periodic Table of the Elements, the Elements, elements of groups IVA, VA and VIA of the Periodic Table of the Elements, C.sub.1 -C.sub.20 -organic and C.sub.3 -C.sub.30 -organosilicon radicals, where at least one of the four radicals is a nonaromatic radical,
The present invention further relates to a process for preparing such copolymers, the use of the copolymers for producing fibers, films and moldings, and also the fibers, films and moldings comprising the copolymers.
Carbon monoxide-olefin copolymers, also known as polyketones, which are built up in an alternating fashion of the structural element of an olefin and carbon monoxide, are known from, for example, Journal of Organometallic Chemistry, 417 (1991) 235, and Adv. Polym. Sci., 73/74 (1986) 125 ff.
The polymers are prepared by reacting the monomers in the presence of a catalyst system composed of a plurality of components.
The components are essentially a transition metal compound of transition group VIII of the Periodic Table of the Elements, phosphine ligands and acids, as described, for example, in EP-A 121 965.
The constituents of the catalyst system are generally mixed with one another before the polymerization or directly in the polymerization reactor by metering in the individual components, thus forming the active catalyst.
However, it is complicated to reproducibly meter in the individual components in optimum ratios. Furthermore, the metering procedure with different metering devices, as well as maintaining stocks of the various catalyst components, is economically disadvantageous.
U.S. Pat. No. 5,338,825 describes a process for preparing carbon monoxide-olefin copolymers using singly positively charged metal complexes which, inter alia, have to have a ligand which stabilizes the complex.
However, the preparative accessibility and the polymerization activity of the catalysts leave something to be desired.
U.S. Pat. No. 5,352,767 describes alternating, elastomeric copolymers of carbon monoxide and .alpha.-olefins which were prepared using a catalyst system comprising cationic metal complexes of group VIIIa of the Periodic Table of the Elements and activators.
However, only .alpha.-olefins are described as comonomers for preparing such copolymers and the polymerization activity of the catalysts is still in need of improvement.
It is an object of the present invention to provide copolymers of carbon monoxide and olefinically unsaturated compounds which do not have the disadvantages mentioned, or have them to only a subordinate degree. Another object of the present invention is to provide a process for preparing these polymers using a catalyst which consists of as few components as possible and gives the copolymers in good yield.
We have found that this object is achieved by the copolymers defined in the introduction.
Furthermore, we have found a process for preparing the copolymers defined in the introduction, the use of the defined copolymers for producing fibers, films and moldings, and also the fibers, films and moldings comprising the copolymers defined in the introduction.
The copolymers of the present invention are built up of units derived from the monomers carbon monoxide and one or more olefinically unsaturated compounds. The monomers are generally incorporated alternately into the copolymer. Suitable olefinically unsaturated compounds are in principle all monomers of this class of compound.
Preference is given to ethylene and C.sub.3 -C.sub.10 -alkenes such as 1-butene, 2-butene, 1-pentene, 1-hexene, 1-octene, 1-nonene, 1-decene and particularly propene, also butadiene, as well as cycloolefins such as cyclopentene, cyclohexene, norbornene and norbornadiene and its derivatives.
Among the olefinically unsaturated aromatic mon
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Jourl. Org. Chem. 417 (1991) 235-251.
Copolymerization of Carbon Monoxide with Olefins, Sen, Dept. Chem, Penn. State Univ. 126-143.
Hofmann Peter
Hohn Arthur
Lippert Ferdinand
Acquah Samuel A.
BASF - Aktiengesellschaft
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