METHOD OF PRODUCING POLYESTER ALCOHOLS Russian patent published in 2016 - IPC C08G65/26 B81B1/00 

FIELD: chemistry.

SUBSTANCE: present invention relates to method of producing polyester alcohols by reaction with each other of following initial components: a) one or more alkylene oxides and carbon dioxide, if necessary, as well as b) one or more starting substances with hydrogen functionality, in presence of catalyst to form liquid reaction mixture in reaction unit (1), characterised by that in reaction unit (1) there are internal devices (2), which form plurality of micro-structured flow channels causing multiple separation of liquid reaction mixture into separate flows, current in their trajectories and repeated joining them in changed order, wherein multiple separation and repeated joining is repeated from 10 to 10,000 times, and micro-structured flow channels have typical size, which is defined as maximum possible distance from one arbitrary particles of liquid reaction mixture until closest to particle wall channel for flow in range from 20 to 10,000 mqm, and therefore flow profile liquid reaction mixture through micro-structured channels for flow from parabolic approaches ideal plug flow, wherein internal device (2) represent reaction plates (2), wherein two or more reaction plates (2), arranged in parallel to each other in direction of main flow through reaction unit (1), in each case make reactor module (3). At that, reaction unit (1) contains one or more reactor modules (3), and each reaction plate (2) contains multiple slots with constant or variable width (4), which are parallel to each other at angle α, different from zero to main flow direction, and directly adjoining reaction plate (2) contains multiple corresponding in geometric sense slots (4), which are arranged at same angle α, but with opposite sign and slot (4) of all stacked reaction plates (2) forms flow channel. Also described is version of above method, in which there are two or several reaction units, wherein: 1) initial components a) and b) are supplied to first reaction unit to obtain first reaction mixture, 2) first reaction mix temperature downstream of first reaction unit preferably maintained at specified level, 3) one or more other initial components, other than those which are fed at step 1) of method, or initial components, which at step 1) of method, mixed in different from stage 1) ratio to obtain second reaction mixture and second reaction mix 4) is supplied to second reaction unit, and reaction mixture produced if necessary, is fed in one reaction unit, wherein stages 2) and 3) are repeated accordingly.

EFFECT: technical result is improvement of uniform distribution of mass flows in method.

15 cl, 2 dwg, 12 tbl, 9 ex