concentration of the primary capsules in the mixture of primary capsules and organic polymer latex is from 10% to 40% by weight of the entire mixture. 8. The method of any one of the preceding claims, wherein the heterocoagulating step to form a polymer coating layer over a shell of the primary capsule is substantially devoid of a polymerization reaction. 9. The method of any one of the preceding claims, wherein the heterocoagulating step is carried out in the absence of an organic solvent. 10. The method of any one of the preceding claims, wherein the organic polymer latex particles comprises poly-N-isopropyl acrylamide (PNIPAM) latex particles, poly-methyl-methacrylate-co-poly-styrene-co- polyethyl-hexyl-acrylate-co-poly-acrylic acid latex particles, poly caprolactone (PCL) latex particles, poly valerolactone latex particles, poly butyrolactone latex particles, polyurethane latex particles, polyamide latex particles, polyacrylic acid-containing latex particles or combinations thereof. 11. The method of any one of the preceding claims, wherein the primary capsule comprises a silica capsule, a zirconia capsule, a titania capsule or combinations thereof. 12. The method of any one of the preceding claims, wherein the polymer latex particles have an average particle size in the range of from 50 nm to 1000 nm and the primary capsule has an average particle size in the range of from 1 pm to 100 pm.