Abstract: A hydrophilic powder such as silica, adapted for dispersion in organic solvents and polymers, is provided with a coating over the outer surface of the powder particles to modify the surface characteristic from polar to non-polar or organophilic, whereby the thus coated powder is readily dispersible without agglomeration or enlargement of the powder particles. Preferred are nano-sized powders.
Type:
Grant
Filed:
April 11, 2001
Date of Patent:
March 25, 2003
Assignee:
Nyacol Nano Technologies, Inc.
Inventors:
Thomas O'Connor, Robert J. Nehring, Jr., R. Andrew Russell
Abstract: A high shear adhesive tape having an adhesive layer containing a rubber mix and at least one tackifier agent, the rubber mix including an effective amount of a crosslinked halogenated butyl rubber, the remaining rubber in the mix being non-crosslinked, the non-crosslinked rubber preferably being butyl rubber, the adhesive layer further being characterized as being free of any crosslinking agent for the remaining rubber in the mix; and pipewrap systems employing this tape.
Type:
Grant
Filed:
May 20, 1997
Date of Patent:
October 6, 1998
Assignee:
Nyacol Products, Inc.
Inventors:
Elwyn G. Huddleston, Scott C. Barnes, Rosana Bianchini