Perfluoropolyether urethane additives having (meth)acryl groups and hard coats
First Claim
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1. A fluorocarbon- and urethane-(meth)acryl-containing composition comprising a perfluoropolyether urethane having a perfluoropolyether moiety and a multi-(meth)acryl terminal group and having the formula:
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n(p(A)QO(O)CHN)—
Ri—
(NHC(O)XQRf)m;
whereinRi is the residue of a multi-isocyanate;
X is O, S or NR, wherein R is H or an alkyl group having 1 to 4 carbon;
Rf is a monovalent perfluoropolyether moiety comprising groups of the formula F(RfcO)xCdF2d-, wherein each Rfc is independently a fluorinated alkylene group having from 1 to 6 carbon atoms,each x is an integer greater than or equal to 2, and wherein d is an integer from 1 to 6;
each Q is independently a connecting group having a valency of at least 2;
A is a (meth)acryl functional group —
XC(O)C(R2)═
CH2 wherein R2 is an alkyl group of 1 to 4 carbon atoms or H or F;
m is at least 1;
n is at least 1;
p is 2 to 6;
m+n is 2 to 10;
wherein the perfluoropolyether urethane further comprises at least one unit attached to the Ri unit selected from—
(NHC(O)XQG),—
(NCO),Rf(O)(XC(O)NH)y—
,—
(NHC(O)XQD(QXC(O)NH)u—
,-D1(QXC(O)NH)y,—
(NHC(O)OQ(A)tQ1Q(A)tOC(O)NH)—
, and(NHC(O)XQ-Rf2(QXC(O)NH)u—
,whereinG is selected from the group consisting of alkyl, aryl, alkaryl, aralkyl, fluoroalkyl, perfluoroalkyl;
or a reactive group selected from (meth)acryl groups, vinyl groups, allyl groups and —
Si(OR3)3 groups, where R3 is a lower alkyl of 1 to 4 carbon atoms;
D is selected from the group consisting of alkylene, arylene, alkarylene, fluoroalkylene, perfluoroalkylene, and aralkylene;
or said D group further containing heteroatoms selected from O, N, and S;
D1 is selected from the group consisting of alkyl, aryl, alkaryl, fluoroalkyl, perfluoroalkyl, and aralkyl, or said D1 group further containing heteroatoms selected from O, N, and S;
Q1 are each independently a connecting group of valency at least 2;
Rf2 is a multi-valent perfluoropolyether moiety having the formula Y((Rfc1O)xCd1F2d1)b,wherein each Rfc1 is independently selected from;
—
CF(CF3)CF2—
, —
CF2CF2CF2—
, and (CH2C(CH3)(CH2OCH2CF3)CH2—
)aa where aa is 2 or greater;
each x is independently an integer greater than or equal to 2, d1 is an integer from 0 to 6;
Y represents a polyvalent organic group or covalent bond having a valence of b, and b represents an integer greater than or equal to 2;
y is independently 2 or greater;
u is independently 1 to 3; and
t is 1-6.
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Abstract
Fluorocarbon- and urethane-(meth)acryl-containing additives and hardcoats. The hardcoats are particularly useful as a surface layer on an optical device.
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Citations
16 Claims
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1. A fluorocarbon- and urethane-(meth)acryl-containing composition comprising a perfluoropolyether urethane having a perfluoropolyether moiety and a multi-(meth)acryl terminal group and having the formula:
-
n(p(A)QO(O)CHN)—
Ri—
(NHC(O)XQRf)m;wherein Ri is the residue of a multi-isocyanate; X is O, S or NR, wherein R is H or an alkyl group having 1 to 4 carbon; Rf is a monovalent perfluoropolyether moiety comprising groups of the formula F(RfcO)xCdF2d-, wherein each Rfc is independently a fluorinated alkylene group having from 1 to 6 carbon atoms, each x is an integer greater than or equal to 2, and wherein d is an integer from 1 to 6; each Q is independently a connecting group having a valency of at least 2; A is a (meth)acryl functional group —
XC(O)C(R2)═
CH2 wherein R2 is an alkyl group of 1 to 4 carbon atoms or H or F;m is at least 1;
n is at least 1;
p is 2 to 6;
m+n is 2 to 10;
wherein the perfluoropolyether urethane further comprises at least one unit attached to the Ri unit selected from—
(NHC(O)XQG),—
(NCO),Rf(O)(XC(O)NH)y—
,—
(NHC(O)XQD(QXC(O)NH)u—
,-D1(QXC(O)NH)y, —
(NHC(O)OQ(A)tQ1Q(A)tOC(O)NH)—
, and(NHC(O)XQ-Rf2(QXC(O)NH)u—
,wherein G is selected from the group consisting of alkyl, aryl, alkaryl, aralkyl, fluoroalkyl, perfluoroalkyl; or a reactive group selected from (meth)acryl groups, vinyl groups, allyl groups and —
Si(OR3)3 groups, where R3 is a lower alkyl of 1 to 4 carbon atoms;D is selected from the group consisting of alkylene, arylene, alkarylene, fluoroalkylene, perfluoroalkylene, and aralkylene;
or said D group further containing heteroatoms selected from O, N, and S;D1 is selected from the group consisting of alkyl, aryl, alkaryl, fluoroalkyl, perfluoroalkyl, and aralkyl, or said D1 group further containing heteroatoms selected from O, N, and S; Q1 are each independently a connecting group of valency at least 2; Rf2 is a multi-valent perfluoropolyether moiety having the formula Y((Rfc1O)xCd1F2d1)b, wherein each Rfc1 is independently selected from;
—
CF(CF3)CF2—
, —
CF2CF2CF2—
, and (CH2C(CH3)(CH2OCH2CF3)CH2—
)aa where aa is 2 or greater;
each x is independently an integer greater than or equal to 2, d1 is an integer from 0 to 6;
Y represents a polyvalent organic group or covalent bond having a valence of b, and b represents an integer greater than or equal to 2;y is independently 2 or greater; u is independently 1 to 3; and t is 1-6. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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n(p(A)QO(O)CHN)—
Specification