Hydrophobic organosilicate-modified silica gels

Details Hydrophobic organosilicate-modified silica gels Hydrophobic organosilicate-modified silica gels

1997-02-24

1998-05-12

Foelak, Morton

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...

524403, 524435, 524780, 524785, 528 12, 528 30, 528 31, 528 32, C08K 310, C08G 7706

Patent

active

057506108

ABSTRACT:
The present invention is hydrophobic organosilicate-modified silica gels and a method for their preparation. The method comprises two steps, where in the first step an organosilicate-modified silica hydrosol is heat treated in the presence of a strong mineral acid at a pH less than about pH 1 to form an organosilicate-modified silica hydrogel. In the second step the organosilicate-modified silica hydrogel is contacted with an organosilicon compound in the presence of a catalytic amount of a strong acid to effect hydrophobing of the organosilicate-modified silica hydrogel thereby forming a hydrophobic organosilicate-modified silica hydrogel having a surface area within a range of about 100 m.sup.2 /g to 750 m.sup.2 /g as measured in the dry state. In a preferred method the hydrophobic organosilicate-modified silica gel is contacted with a sufficient quantity of a water-immiscible organic solvent to convert the hydrophobic organosilicate-modified silica hydrogel into a hydrophobic organosilicate-modified silica organogel.

REFERENCES:
patent: 2892797 (1959-02-01), Alexander et al.
patent: 3015645 (1962-01-01), Tyler
patent: 3024126 (1962-03-01), Brown
patent: 3122520 (1964-02-01), Lentz
patent: 3850971 (1974-11-01), Termin et al.
patent: 3979546 (1976-09-01), Lewis
patent: 4006175 (1977-02-01), Termin et al.
patent: 4360388 (1982-11-01), Nauroth et al.

Affiliated with

Also associated with

Rating

Hydrophobic organosilicate-modified silica gels does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Hydrophobic organosilicate-modified silica gels, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Hydrophobic organosilicate-modified silica gels will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-979704