Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Processes of preparing a desired or intentional composition...
Reexamination Certificate
2005-09-13
2005-09-13
Seidleck, James J. (Department: 1711)
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Processes of preparing a desired or intentional composition...
C523S105000, C523S106000, C525S479000, C525S903000, C623S006120, C427S508000, C427S002100, C427S002120, C427S002130, C427S002310, C427S002240, C264S001320, C264S001700, C522S099000, C522S113000, C522S114000, C522S120000, C522S121000, C522S115000, C522S134000, C522S135000, C522S142000, C522S144000, C522S148000, C522S172000
Reexamination Certificate
active
06943204
ABSTRACT:
A process for forming a surface modification on a polymer substrate and polymer substrates having such surface modifications. The process comprises the steps of absorbing a swelling monomer into the polymer substrate for a period of time in order to swell the polymer substrate; removing the swollen polymer from the swelling monomer; transferring the swollen polymer to a reaction mixture containing at least one functional monomer; polymerizing the functional monomer in the reaction mixture containing the swollen polymer substrate for a period of time; and removing the polymer from the reaction mixture. Because the surface modification produced by the process is a surface interpenetrating polymer network, the process is not sensitive to the reactive groups located on the surface of the polymer substrate. Further, the surface interpenetrating network bonds to the polymer substrate through caternary connections or other forms of chain entanglement and this is quite stable. Polymer substrates having the surface modification of the present invention are capable of having a surface modification agent, such as heparin, adhere to the surface of the polymer substrate.
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Boxtel Robert van
Wang Yading
Zhou Stephen Q.
Advanced Medical Optics Inc.
Advanced Medical Optics Uppsala AB
McClendon Sanza L.
Seidleck James J.
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