Crosslinkable hydrophilic materials from reactive oligomers having pendent photoinitiator groups
First Claim
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1. An absorbent dressing comprising a crosslinked hydrophilic gel absorbent layer comprising:
- a) a first component oligomer comprising a plurality of polymerized monomer units having pendent hydrophilic poly(alkylene oxide) groups, and pendent photoinitiator groups; and
b) a hydrophilic poly(alkylene oxide) crosslinking agent of the formula;
Z-Q-CH(R1)—
CH2—
O—
(CH(R1)—
CH2—
O)m—
CH(R1) —
CH2-Q-Z, wherein Z is a polymerizable ethylenically unsaturated moiety, R1 is a H or a C1 to C4 alkyl group, and m is from 20 to 500, and Q is a divalent linking group selected from —
O—
, —
NR1—
, —
CO2— and
—
CONR1—
.
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Abstract
The present invention provides crosslinkable compositions useful in the preparation of hydrophilic gels, and are prepared from oligomers having pendent hydrophilic, poly(alkylene oxide) groups, pendent photoinitiator groups, and optionally polymerizable functional groups, and crosslinked by polyfunctional poly(alkylene oxides).
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Citations
17 Claims
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1. An absorbent dressing comprising a crosslinked hydrophilic gel absorbent layer comprising:
-
a) a first component oligomer comprising a plurality of polymerized monomer units having pendent hydrophilic poly(alkylene oxide) groups, and pendent photoinitiator groups; and b) a hydrophilic poly(alkylene oxide) crosslinking agent of the formula; Z-Q-CH(R1)—
CH2—
O—
(CH(R1)—
CH2—
O)m—
CH(R1) —
CH2-Q-Z, wherein Z is a polymerizable ethylenically unsaturated moiety, R1 is a H or a C1 to C4 alkyl group, and m is from 20 to 500, and Q is a divalent linking group selected from —
O—
, —
NR1—
, —
CO2— and
—
CONR1—
. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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Specification