Claims
- 1. A composition comprising alumina trihydrate particles containing on their surfaces a silane, its hydrolyzates or resulting condensate, which silane possesses at least two to about three hydrolyzable groups bonded to the silicon thereof and an organic group which contains a polyalkylene oxide group, said silane being present on the surfaces of said particles in an amount from about 0.25 weight percent to 5 weight percent of the composition.
- 2. The composition of claim 1 wherein the amount of the silane is from about 0.5 to about 3 weight percent of the composition.
- 3. The composition of claim 1 wherein the silane has the following general formula:
- R.sup.II (OR.sup.I ).sub.a ORSiX.sub.3
- wherein R can be any divalent organic group which is either oxygen or carbon bonded to the silicon atom, R.sup.I is one or more 1,2-alkylene groups each containing at least 2 carbon atoms and not more than about 4 carbon atoms; R.sup.II is hydrogen, alkyl, acyloxy or an organofunctional group; and X is a hydrolyzable group, and a is a number having an average value of from 4 to about 150.
- 4. The composition of claim 3 wherein the silane is coreacted or comixed with a different silane, as encompassed by the following formula:
- R.sup.3.sub.n (SiX.sub.4-n).sub.b
- or the cohydrolyzate or the cocondensate of such different silane with the silane, wherein R.sup.3 is an organic radical whose free valence is equal to the value of b, X is as defined above, n is equal to 0 or 1 and b is a positive number.
- 5. The composition of claim 3 wherein a has a value of from 4 to about 120.
- 6. The composition of claim 4 wherein a has a value of from 4 to about 120.
Parent Case Info
This application is a continuation-in-part of applicant's copending U.S. application Ser. No. 727,670, filed Sept. 29, 1976, now abandoned.
US Referenced Citations (3)
Number |
Name |
Date |
Kind |
3227675 |
Papalos |
Jan 1966 |
|
3350345 |
Vanderbilt et al. |
Oct 1967 |
|
3839065 |
Overhults et al. |
Oct 1974 |
|
Continuation in Parts (1)
|
Number |
Date |
Country |
Parent |
727670 |
Sep 1976 |
|