Patent ID: 8747999

Claim:
A capsule, characterized in that the capsule is a microcapsule or nanocapsule having a core and a polymeric shell, which shell is characterized in that the shell has cationic and fiber-reactive groups on the outside of the shell surface, characterized in that the ratio of cationic groups to the reactive fiber groups on the shell surface is 50:1 up to 1:1, the reactive groups are methylol groups of melamine formaldehyde resin; methylol groups of methylol acrylamide; 2,4 -dichloro-1,3,5-triazine (DCT); mono-chlorotriazine (MCT), wherein the triazine can be additionally substituted by one substituent chosen form the group consisting of —F, —OH, —OC 1 -C 4 alkyl, —NH 2 , —NH(C 1 -C 4 alkyl) and -N(C 1 -C 4 alkyl) 2 ; mono-fluorotriazine, wherein the triazine can be additionally substituted by one subsitutent chosen form the group consisting of —F, —OH, —OC 1 -C 4 alkyl, —NH 2 , —NH(C 1 -C 4 alkyl) and —N(C 1 -C 4 alkyl) 2 , 2-sulfooxyethylsulfonyl group; 2-chloroethylsulfonyl; vinylsulfonyl group; alkoxychlorotriazine; 2-(sulfothio)ethylsulfonyl groups; trichloropyrimidine; difluorochloropyrimidine (DFCP); dichloroquinoxaline; 2,3-dichloro-chinoxaline (DCC) and 3-chloropropionamine (CPA) and the fiber reactive groups are groups which form covalent bonds with the functional groups of the fiber.