HYDROPHILIC GEL FROM REACTIVE HYDROPHILIC OLIGOMERS

• US 20090326498A1
• Filed: 09/08/2009
• Published: 12/31/2009
• Est. Priority Date: 09/26/2003
• Status: Active Grant

• Current Assignee: 3M Innovative Properties Company (3M Company)
• Original Assignee: 3M Innovative Properties Company (3M Company)
• Inventors: Gaddam, Babu N., Heilmann, Steven M., Lewandowski, Kevin M., Wendland, Michael S., Fansler, Duane D.
• Granted Patent: US 7,659,323 B2
• Time in Patent Office: Days
• US Class Current: 604/368
• CPC Class Codes: A61L 15/22 containing macromolecular materials
• CPC Class Codes: A61P 17/02 for treating wounds, ulcers, burns, scars, keloids, or the like
• CPC Class Codes: C08F 265/04 on to polymers of esters
• CPC Class Codes: C08F 283/06 on to polyethers, polyoxymethylenes or polyacetals C08F283/004 takes precedence
• CPC Class Codes: C08F 291/00 Macromolecular compounds obtained by polymerising monomers on to macromolecular compounds according to more than one of the groups C08F251/00 - C08F289/00
• CPC Class Codes: C08F 293/005 using free radical "living" or "controlled" polymerisation, e.g. using a complexing agent
• CPC Class Codes: C08G 65/329 with organic compounds
• CPC Class Codes: C08L 2666/02 Organic macromolecular compounds, natural resins, waxes or and bituminous materials
• CPC Class Codes: C08L 51/003 grafted on to macromolecular compounds obtained by reactions only involving unsaturated carbon-to-carbon bonds C08L51/04, C08L51/06 take precedence
• CPC Class Codes: C08L 51/006 grafted on to block copolymers containing at least one sequence of polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds
• CPC Class Codes: C08L 51/08 grafted on to macromolecular compounds obtained otherwise than by reactions only involving unsaturated carbon-to-carbon bonds
• CPC Class Codes: C08L 71/02 Polyalkylene oxides
• CPC Class Codes: C09D 151/003 grafted on to macromolecular compounds obtained by reactions only involving unsaturated carbon-to-carbon bonds C09D151/04, C09D151/06 take precedence
• CPC Class Codes: C09D 151/006 grafted on to block copolymers containing at least one sequence of polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds
• CPC Class Codes: C09D 151/08 grafted on to macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds

Abstract

Hydrophilic compositions are described, which are prepared from a first oligomer containing pendent polymerizable groups and pendent hydrophilic groups, crosslinked with a co-reactive second component oligomer possessing photoinitiator groups. The compositions may be used as in preparation of hydrophilic gel coatings or layers for medical devices.

Claims

18-1. The absorbent dressing of claim 1, wherein hydrophilic gel layer is 250 micrometers to 5000 micrometers in total thickness.