Patent ID: 8821776

Claim:
A process for the additivation of synthetic fibres, artificial fibres and polymers conferring special properties to them, comprising: encapsulating an additive into the pores of particles of a porous material to form capsules; incorporating the particles of the porous material into the polymer matrix of the fibres; and spinning the fibres, the capsules withstanding the temperatures and pressures of the different manufacturing processes which the fibres will undergo and the introduction of the additive into the polymer matrix thereof, wherein the porous material is a metal oxide, a zeolite, an aluminophosphate, clay, a carbon material, a hybrid organic-inorganic material or a porous polymer, and wherein the porous material has mesoporous porosity being a pore size in the range of 2 nm and 50 nm, wherein the particles are of a size in the range of 100 nm to 50 microns, and wherein the process protects the additives from washing and rubbing, prolonging the duration of the effect of additive by introducing the capsules into the polymer matrix.