US 6,160,067 A · Reactive silica particles, process for manufacturing the same, use of the same

Abstract

Reactive silica particles capable of producing coatings exhibiting excellent scratch resistance, weather resistance, adhesiveness, and curability, while satisfying a wide spectrum of performances from transparency to semi-transparency and providing a glossy surface as well as a frosty surface. Reactive silica particles comprises silica particles and an organic compound chemically bonded to the silica particles via a silyloxy group, wherein the organic compound has a polymerizable unsaturated group, a group represented by the following formula (1), ##STR1## (wherein X is a group selected from --NH--, --O--, and --S-- and Y is a group selected from oxygen and sulfur, provided that when X is --O--, Y is a sulfur atom), and a group represented by the following formula (2), ##STR2## (wherein Z is a group selected from oxygen and sulfur)

Claims12

Dependent claims

A curable composition comprising reactive silica particles comprising:

(a) silica particles;
and
(b) an organic compound chemically bonded to the silica particles via a silyloxy group;
wherein the organic compound has
(i) a polymerizable unsaturated group
(ii) a group represented by the following formula (1);
##STR19## and (iii) a group represented by the following formula (2);
##STR20## wherein X represents a group selected from --NH--, --O--, and --S--;
Y represents a group selected from oxygen and sulfur;
Y represents sulfur if X represents oxygen;
and
Z represents a group selected from oxygen and sulfur.

9 more elements

Dependencies are inferred from the claim text.

Reactive silica particles, process for manufacturing the same, use of the same

Life of this patent

Reactive silica particles, process for manufacturing the same, use of the same

Life of this patent

Abstract

Claims12