Crosslinkable hydrophilic materials from reactive oligomers having pendent unsaturated groups
First Claim
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1. A hydrophilic, crosslinkable oligomer composition comprisinga) a first component oligomer comprising a plurality of polymerized monomer units having pendent hydrophilic poly(alkylene oxide) groups of the formula:
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Z-Q-(CH(R1)—
CH2-Q)n-R2,wherein Z is a polymerizable ethylenically unsaturated moiety, R1 is a H or a C1 to C4 alkyl group, R2 is a H, a C1 to C4 alkyl group, aryl group, or combinations thereof and n is from 2 to 100, and Q is a divalent linking group selected from —
O—
, —
NR1—
, —
CO2— and
—
CONR1—
, and a plurality of polymerized ethylenically-unsaturated monomer units having pendent, ethylenically unsaturated free-radically polymerizable functional groups; and
b) a hydrophilic poly(alkylene oxide) crosslinking agent having polymerizable, ethylenically unsaturated terminal groups.
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Abstract
The present invention provides cross linkable compositions useful in the preparation of hydrophilic gels, and are prepared from obligers having pendent hydrophilic ploy(alkenylene oxide) groups, and pendent pulverizable functional groups, and cross linked by polyfunctional ploy(alkenylene oxides).
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Citations
31 Claims
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1. A hydrophilic, crosslinkable oligomer composition comprising
a) a first component oligomer comprising a plurality of polymerized monomer units having pendent hydrophilic poly(alkylene oxide) groups of the formula: -
Z-Q-(CH(R1)—
CH2-Q)n-R2,wherein Z is a polymerizable ethylenically unsaturated moiety, R1 is a H or a C1 to C4 alkyl group, R2 is a H, a C1 to C4 alkyl group, aryl group, or combinations thereof and n is from 2 to 100, and Q is a divalent linking group selected from —
O—
, —
NR1—
, —
CO2— and
—
CONR1—
, and a plurality of polymerized ethylenically-unsaturated monomer units having pendent, ethylenically unsaturated free-radically polymerizable functional groups; andb) a hydrophilic poly(alkylene oxide) crosslinking agent having polymerizable, ethylenically unsaturated terminal groups. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31)
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Specification