C - Chemistry – Metallurgy – 08 – J
Patent
C - Chemistry, Metallurgy
08
J
117/46.8
C08J 3/16 (2006.01) C08C 1/14 (2006.01)
Patent
CA 1149687
ABSTRACT OF THE DISCLOSURE Method for preparation of free-flowing com- posite particles by latex over-coagulation techniques. According to this procedure, a dispersion is initially prepared of elastomer particles. A second dispersion is also prepared containing a latex of nonelastomeric particles which have been swollen with an appropriate solvent. Both the above dispersion are thereupon com- bined whereby the swollen nonelastomeric particles be- come intimately associated with the elastomeric particles. Upon coagulation of the latex and dispersion, intimate association of the polymer particles contained therein is achieved. Recovery of the polymer particles is ac- complished by filtration and the recovered particles ultimately dried. The product prepared in the above manner comprises a free-flowing mixture of (i) composite predominantly elastomer particles, (ii) particles sub- stantially devoid of nonelastomeric materials and (iii) particles of nonelastomeric materials.
334020
Goodrich (b.,f.) Company (the)
Sherman
LandOfFree
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