| abstract |
Provided is a method for preparing a modified filler. The method includes in sequence providing an acidified aqueous slurry of an untreated inorganic filler which has not been previously dried; an emulsifier material; and a hydrophobating agent having the following structural formula (I): (I) R a n n ̱ n n M-X (4-a) wherein: R is C 6 to C 22 alkyl, M is silicon, titanium or zirconium, X is OR' or halogen, R' is C 1 to C 4 alkyl, and a is 1; washing and/or filtering the acidified aqueous slurry to obtain a modified filler; and, optionally, drying the modified filler. Polymeric compositions and articles also are provided. |