Curable organosiloxane oligomer compositions
First Claim
1. A composition comprising the following components:
- (a) at least one organosiloxane compound, fluorinated organosiloxane compound, or a combination thereof, comprising reactive silane functionality comprising at least two hydroxysilyl moieties;
(b) at least one organosiloxane oligomer, fluorinated organosiloxane oligomer, or a combination thereof, comprising reactive silane functionality comprising at least two hydrosilyl moieties; and
(c) a catalyst composition comprising (1) at least one base selected from amidines, guanidines, phosphazenes, proazaphosphatranes, and combinations thereof, and (2) at least one Lewis acid;
wherein at least one of said components (a) and (b) has an average reactive silane functionality of at least three, the composition is substantially free of an organic solvent, and the composition further comprises
(R″
O)p—
Si(R′
)3-p[G-Si(R′
)2]t—
(W)s—
[(R′
)2SiO]q—
[Si(R′
)2-G]t—
Si(R′
)3-p—
(OR″
)p;
wherein;
G and W are oxy;
each R′
is independently selected from alkyl, alkylene, fluoroalkyl, aryl, fluoroaryl, cycloalkyl, fluorocycloalkyl, hetroalkyl, hetrofluoroalkyl, hetroaryl, hetrofluoroaryl, hetrocycloalkyl, hetrofluorocycloalkyl, oxyalkyl, oxyfluoroalkyl, oxyaryl, oxyfluoroaryl, oxycycloalkyl, oxyfluorocycloalkyl, oxyhetroalkyl, oxyhetrofluoroalkyl, oxyhetroaryl, oxyhetrofluoroaryl, oxyhetrocycloalkyl, and oxyhetrofluorocycloalkyl;
each R″
is independently selected from alkyl;
P is an integer selected from 1, 2 or 3;
each q is independently selected as an integer of 0-150, inclusive;
s is selected as an integer of 0-40, inclusive; and
each t is independently selected as an integer of 0 or 1.
1 Assignment
0 Petitions
Accused Products
Abstract
A curable composition including (a) at least one organosiloxane compound, fluorinated organosiloxane compound, or combination thereof having reactive silane functionality including at least two hydroxysilyl moieties; (b) at least one organosiloxane oligomer, fluorinated organosiloxane oligomer, or combination thereof having reactive silane functionality including at least two hydrosilyl moieties; and (c) a catalyst composition including (1) at least one base selected from amidines, guanidines, phosphazenes, proazaphosphatranes, and combinations thereof, and (2) at least one Lewis acid. At least one of the components (a) and (b) has an average reactive silane functionality of at least three, and the composition is substantially free of organic solvent(s). An alkoxysilane compound may be optionally included in the curable composition. A process for coating the composition to prepare articles having the cross-linked composition on at least a portion of at least one major substrate surface is also disclosed.
-
Citations
17 Claims
-
1. A composition comprising the following components:
-
(a) at least one organosiloxane compound, fluorinated organosiloxane compound, or a combination thereof, comprising reactive silane functionality comprising at least two hydroxysilyl moieties; (b) at least one organosiloxane oligomer, fluorinated organosiloxane oligomer, or a combination thereof, comprising reactive silane functionality comprising at least two hydrosilyl moieties; and (c) a catalyst composition comprising (1) at least one base selected from amidines, guanidines, phosphazenes, proazaphosphatranes, and combinations thereof, and (2) at least one Lewis acid; wherein at least one of said components (a) and (b) has an average reactive silane functionality of at least three, the composition is substantially free of an organic solvent, and the composition further comprises
(R″
O)p—
Si(R′
)3-p[G-Si(R′
)2]t—
(W)s—
[(R′
)2SiO]q—
[Si(R′
)2-G]t—
Si(R′
)3-p—
(OR″
)p;wherein; G and W are oxy; each R′
is independently selected from alkyl, alkylene, fluoroalkyl, aryl, fluoroaryl, cycloalkyl, fluorocycloalkyl, hetroalkyl, hetrofluoroalkyl, hetroaryl, hetrofluoroaryl, hetrocycloalkyl, hetrofluorocycloalkyl, oxyalkyl, oxyfluoroalkyl, oxyaryl, oxyfluoroaryl, oxycycloalkyl, oxyfluorocycloalkyl, oxyhetroalkyl, oxyhetrofluoroalkyl, oxyhetroaryl, oxyhetrofluoroaryl, oxyhetrocycloalkyl, and oxyhetrofluorocycloalkyl;each R″
is independently selected from alkyl;P is an integer selected from 1, 2 or 3; each q is independently selected as an integer of 0-150, inclusive; s is selected as an integer of 0-40, inclusive; and each t is independently selected as an integer of 0 or 1. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
-
Specification