SEMIBATCHWISE PROCESS FOR PREPARING OLEFIN-CO COPOLYMERS
A process for preparing olefin-CO copolymers with the steps of: providing a reactor; charging the reactor with a gaseous olefin and with CO, such that there is a first pressure p1 in the reactor; and reacting olefin with CO in the presence of a catalyst in the reactor. Prior to the reaction, either no CO is present in the reactor or the volume ratio of gaseous olefin to CO is ≧90:10. During the reaction, gaseous olefin and CO are metered in at least intermittently, with an average over time of the volume ratio of the olefin metered into CO metered in of ≧90:10.
1 . A process for preparing an olefin-CO copolymer, comprising the steps of:
providing a reactor;
charging the reactor with a gaseous olefin and with CO, such that there is a first pressure p1 in the reactor;
reacting olefin with CO in the presence of a catalyst in the reactor;
wherein
prior to the reaction either no CO is present in the reactor or the volume ratio of gaseous olefin to CO is ≧90:10
and gaseous olefin and CO are metered in at least intermittently during the reaction, with an average over time of the volume ratio of the gaseous olefin metered in to CO metered in of ≧90:10.
2 . The process according to claim 1 , wherein the pressure in the reactor during the reaction is in the range from ≧80% of p1 to ≦120% of p1.
3 . The process according to claim 1 , wherein a pressure drop which occurs during the reaction is balanced out by feeding further gaseous olefin and CO into the reactor, and wherein the average over time of the volume ratio of the further gaseous olefin fed in to the further CO fed in is ≧90:10.
4 . The process according to claim 1 , wherein the catalyst comprises palladium.
5 . The process according to claim 1 , wherein the catalyst comprises an anionic bidentate ligand comprising a phosphorus atom bridged to an oxygen anion over at least two and a maximum of four further atoms.
6 . The process according to claim 1 , wherein the reaction of the olefin with CO takes place in the presence of a further olefin.
7 . The process according to claim 1 , wherein the reaction of the olefin with CO is preceded by a homopolymerization of the olefin or a copolymerization of a plurality of olefins in the reactor.
8 . The process according to claim 1 , wherein the pressure p1 is ≧20 bar to ≦300 bar.
9 . The process according to claim 1 , wherein the reaction is performed at a temperature of ≧90° C. to ≦150° C.
10 . The process according to claim 1 , wherein the catalyst is injected at a temperature of ≧90° C. to ≦150° C. into the reactor containing gaseous olefin or a mixture of gaseous olefin and CO.
11 . An olefin-CO copolymer obtained by the process according to claim 1 , wherein the content of CO incorporated into the polymer is ≦5 mol % based on all the monomers incorporated and the copolymer has an alternating fraction of ≦32.5 mol %.
12 . The olefin-CO copolymer according to claim 11 having a number-average molecular weight M n of ≦15 000 g/mol.
13 . A polyol compound obtained by reducing the olefin-CO copolymer according to claim 11 .
14 . A polyamine and/or polyamine-polyalcohol compound obtained by reductively aminating the olefin-CO copolymer according to claim 11 .
15 . A method for the preparation of a polyurethane and/or polyurea polymer comprising utilizing the olefin-CO copolymer according to claim 11 .
16 . A method comprising utilizing the olefin-CO copolymer according to claim 11 as polymer additive.
17 . A method for the preparation of a polyurethane and/or polyurea polymer comprising utilizing the polyol compound according to claim 13 .
18 . A method comprising utilizing the polyol compound according to claim 13 as polymer additive.
19 . A method for the preparation of a polyurethane and/or polyurea polymer comprising utilizing the polyamine and/or polyamine-polyalcohol compound according to claim 14 .
20 . A method comprising utilizing the polyamine and/or polyamine-polyalcohol compound according to claim 14 as polymer additive.