Patent ID: 6892958
Filing Date: 2005-05-17
Classification: B01F,B01J,B29K

Abstract:
1. A micromixer used in a continuous polymerization process for preparation of homopolymers or copolymers by free-impinging-jet micromixing of fluids formed ( 1 ) of monomer(s) and ( 2 ) of an initiator system, wherein said fluids ( 1 ) and ( 2 ) are micromixed and the mixture of these fluids is recovered in the form of a resultant jet Jr, originating from the point of impingement (I), the mixromixer comprising: a) means for forming at least one group of at least two jets Ja of identical or different fluids, these jets coinciding at a point of impingement (I), the jets Ja of the same group all being of identical geometry, their axes being arranged such that their projections on a plane perpendicular to the axis (A) of the resultant jet Jr are distributed angularly in a uniform manner and being inclined relative to the said axis (A) by the same non-zero angle α of between 10° and 60°; b) means for directing at the point of impingement (I) at least one jet Jb of a fluid which is different from at least one of the fluids of the said jets Ja for forming a resultant jet Jr, the axis of the jet(s) Jb being inclined relative to the axis (A) by an angle β which is less than the angle α, and c) means for recovering the mixture of the fluids in the jets Ja and Jb in the form of the resultant jet Jr.