Organic articles
First Claim
1. A composite material comprising(a) an inorganic or organic bulk material having covalently bonded to its surface initiator moieties for radical polymerization;
- and (b) a hydrophilic surface coating obtainable by applying one or more different ethylenically unsaturated hydrophilic macromonomers to the bulk material surface provided with the initiator radicals and polymerizing said macromonomers, wherein the macromonomers according to (b) are each of formula whereinR1 is hydrogen, C1-C6-alkyl or a radical —
COOR′
;
R, R′ and
R1′
are each independently of the other hydrogen or C1-C6-alkyl;
A is a direct bond or is a radical of formula
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Abstract
The invention relates to novel composite materials comprising (a) an inorganic or organic bulk material having covalently bound to its surface initiator moieties for radical polymerization; and (b) a hydrophilic surface coating obtainable by applying one or more different ethylenically unsaturated hydrophilic macromonomers of formula (1) as outlined in the claims to the bulk material surface provided with the initiator radicals and polymerizing said macromonomers. The composite materials of the invention have desirable characteristics regarding adherence to the substrate, durability, hydrophilicity, wettability, biocompatibility and permeability and are thus useful for the manufacture of biomedical articles such as ophthalmic devices.
75 Citations
31 Claims
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1. A composite material comprising
(a) an inorganic or organic bulk material having covalently bonded to its surface initiator moieties for radical polymerization; - and
(b) a hydrophilic surface coating obtainable by applying one or more different ethylenically unsaturated hydrophilic macromonomers to the bulk material surface provided with the initiator radicals and polymerizing said macromonomers, wherein the macromonomers according to (b) are each of formula wherein R1 is hydrogen, C1-C6-alkyl or a radical —
COOR′
;
R, R′ and
R1′
are each independently of the other hydrogen or C1-C6-alkyl;
A is a direct bond or is a radical of formula - 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)
- and
Specification