C - Chemistry – Metallurgy – 08 – L
Patent
C - Chemistry, Metallurgy
08
L
C08L 53/00 (2006.01) A61K 8/90 (2006.01) A61Q 19/10 (2006.01) C08F 2/16 (2006.01) C09D 7/00 (2006.01) C09D 153/00 (2006.01) D21H 19/70 (2006.01)
Patent
CA 2020847
ABSTRACT Z/PV 35338 PARTICLES OF HYDROPHOBIC POLYMER CONTAINING VOIDS Polymer particles each containing at least one void and also a hydrophobic copolymeric surfactant and a hydrophilic copolymeric surfactant. The hydrophobic surfactant comprises long hydrophobic chains anchored in the particles and hydrophilic chains exposed to the voids. The hydrophilic copolymeric surfactant comprises hydrophobic portions anchored in the particles and hydrophilic chains exposed to the surroundings of the particles. The particles have a fine cell structure, are washable to remove unanchored surfactant and are easily dispersible in water. They are useful in coatings, plastics, cosmetics, paper and leather. Also a process for making the particles in which water is dispersed as droplets in monomer containing the hydrophobic surfactant and the dispersion is in turn dispersed in additional water containing the hydrophilic surfactant and the whole is subjected to a polymerisation which forms particles containing voids initially filled with water.
Adam Herve
Nicaud Claude G. S.
Riess Henri G.
Adam Herve
Compagnie Des Vernis Valentine
Marks & Clerk
Nicaud Claude G. S.
Riess Henri G.
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