Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Polymer of an ethylenically unsaturated reactant with a...
Patent
1998-09-03
2000-03-14
Acquah, Samuel A.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Polymer of an ethylenically unsaturated reactant with a...
524706, 524709, 524714, 524742, 524765, 524783, 524785, 502102, 502150, 502162, 502171, 502172, 502208, C08G 6702
Patent
active
060374438
DESCRIPTION:
BRIEF SUMMARY
The present invention relates to linear, thermoplastic, elastomeric copolymers of carbon monoxide and olefinically unsaturated compounds having an alternating sequence of repeating units and an average molecular weight Mw of the copolymers of from 80,000 to 1,200,000, binary, linear, alternating carbon monoxide/ethylene copolymers being excluded.
The present invention furthermore relates to a process for the preparation of such copolymers, the use of the copolymers for the production of fibers, films and moldings, and the fibers, films and moldings comprising the copolymers and metal complexes (Ia) as defined hereafter.
Carbon monoxide/ethylene copolymers have recently attracted interest as engineering plastics for the production of articles having a relatively high melting point, for example gearwheels. As a rule, carbon monoxide copolymers with ethylene as comonotner are very hard and brittle and have little or no impact strength, making them unsuitable for many applications in which these properties are desirable.
U.S. Pat. No. 5,352,767 describes alternating, elastomeric copolymers of carbon monoxide and .alpha.-olefins, which copolymers were prepared using a catalyst system which contains cationic metal complexes of group VIIIB of the Periodic Table of Elements and activators based on primary and secondary alcohols.
However, the carbon monoxide/propylene, n-butene or n-hexene copolymers described herein have an average molecular weight Mw of only up to 50,000, which does not ensure thermoplastic elastomeric properties and moreover is too low for applications as engineering material.
Furthermore, a large excess of alcoholic activators is required for activating the polymerization catalysts.
It is an object of the present invention to provide copolymers of carbon monoxide and olefinically unsaturated compounds, which copolymers do not have said disadvantages or have them only to a minor extent and in particular have high average molecular weights Mw (80,000 or more) and both thermoplastic and elastomeric properties.
It is a further object of the present invention to provide a process for the preparation of these polymers which employs a catalyst which has polymerization activity without large amounts of activator, i.e. only up to 500 mole equivalents, based on the catalyst metal, or particularly preferably without any activator at all.
We have found that this object is achieved by linear, thermoplastic, elastomeric copolymers of carbon monoxide and olefinically unsaturated compounds having an alternating sequence of repeating units and an average molecular weight Mw of the copolymers of from 80,000 to 1,200,000, binary, linear, alternating carbon monoxide/ethylene copolymers being excluded.
We have also found a process for the preparation of linear, thermoplastic, elastomeric copolymers of carbon monoxide and olofinically unsaturated compounds having an alternating sequence of repeating units and an average molecular weight Mw of the copolymers of from 80,000 to 1,200,000, binary, linear, alternating carbon monoxide/ethylene copolymers being excluded, by copolymerization of carbon monoxide with olefinically unsaturated compounds in a virtually alcohol-free or anhydrous polymerization medium in the presence of a catalyst whose active material is formed from ##STR1## where: M is a metal from group VIIIB of the Periodic Table of Elements, Elements, structural units of elements of group IVA, VA, VIA of the Periodic Table of Elements, C.sub.1 - to C.sub.20 -organocarbon and C.sub.3 - to C.sub.30 -organosilicon radicals, where the radicals may contain one element or a plurality of elements from groups IVA, VA, VIA and VIIA of the Periodic Table of Elements, component B) being used.
We have also found a process for the preparation of linear, thermoplastic, elastomeric copolymers of carbon monoxide and olefinically unsaturated compounds having an alternating sequence of repeating units and an average molecular weight Mw of the copolymers of from 80,000 to 1,200,000, binary, linear, alternating carbon monoxide/e
REFERENCES:
patent: 5352767 (1994-10-01), Chen
patent: 5384393 (1995-01-01), Hanna et al.
Makromol. Chem. 194, 2579-2603, (1993) Xu et al.
Macromolecules 1996, 29, 4806-4808, Abu-Surrah et al.
Abu-Surrah Adnan S.
Horn Hans Christoph
Muller Hans-Joachim
Rieger Bernhard
Spahl Roland
Acquah Samuel A.
BASF - Aktiengesellschaft
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