METHOD OF INTRODUCING ADDITIVES INTO POLYMERS Russian patent published in 2009 - IPC C08L39/00 D06P7/00 

FIELD: chemistry.

SUBSTANCE: method involves drawing out a polymer object with a stretched shape in an adsorption-active liquid medium (AALM), containing a dissolved additive, and drying the polymer in conditions where the polymer is held in stretched state in the direction of drawing out with subsequent effect on the polymer. The polymer used is amorphous or amorphous-crystalline, oriented, non-oriented or partially oriented polymer. Drawing is carried out with deformation value not less than 2%, and effect on the polymer involves successive carrying out of at least one cycle of operations, involving drawing out polymer in adsorption-active medium, containing another dissolved additive, with deformation value of not less than 2%, and drying the polymer in conditions where the polymer is held in stretched state in the direction of drawing out.

EFFECT: invention allows for obtaining modified polymers with alternation of zones, filled with only one or only another additive, widens the field of use of the method through its distribution to amorphous, oriented or partially oriented polymers.

2 cl, 2 ex