Method of producing fine disperse alkylated silica compounds

Compositions: coating or plastic – Materials or ingredients – Miscellaneous

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

106288Q, 106288B, 106309, 427213, 427220, C09C 128

Patent

active

040309401

ABSTRACT:
A method of producing fine-disperse alkylated silica compounds, characterized in that starting fine-disperse silica is subjected to treatment with water vapors at a temperature of 110.degree.-120.degree. C to attain the humidification degree of from 2 to 40 micromoles H.sub.2 O/m.sup.2 SiO.sub.2, the thus humidified silica being then treated with vapors of alkylchlorosilane at a temperature of 250.degree. to 310.degree. C. The method of the invention allows controlling the concentration of grafted alkyl groups in the resultant product within the range of from 4.7 to 8.0 micromoles of grafted alkyl groups per m.sup.2 of the surface of SiO.sub.2. Starting silica can be modified with oxides of metals, such as aluminium, titanium, iron or zirconium oxides, the resultant products exhibiting good hydrophobic properties when used as thickeners for lubrication materials.

REFERENCES:
patent: 3873337 (1975-03-01), Laufer et al.
patent: 3920865 (1975-11-01), Laufer et al.
patent: 3924029 (1975-12-01), Schutte et al.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Method of producing fine disperse alkylated silica compounds does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method of producing fine disperse alkylated silica compounds, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of producing fine disperse alkylated silica compounds will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-734247

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.