Precipitated silicas, a process for their preparation and their

Details Precipitated silicas, a process for their preparation and their Precipitated silicas, a process for their preparation and their

1997-09-16

1999-01-12

Cain, Edward J.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

At least one aryl ring which is part of a fused or bridged...

524492, 423335, C08K 300

Patent

active

058591176

ABSTRACT:
Precipitated silicas, characterized in that they have a CTAB surface area (in accordance with ASTM D 3765-92) of 200 to 400 m.sup.2 /g, a DBP index (in accordance with ASTM D 2414) between 230 and 380 ml/100 g as powder and 180-250 g/100 g as granulate, a silanol group density (V.sub.2 -NaOH consumption) of 20 to 30 ml and the following macropore size distribution which is typical of the surface area range involved, determined by means of Hg porosimetry (DIN 66 133) for specific pore size intervals (incremental mode of application):

REFERENCES:
patent: 4590052 (1986-05-01), Chevallier et al.

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