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US 7,407,709 B2Granted
Silicone pressure sensitive adhesive and articles
Assignee3M Innovative Properties Company
InventorsZhiming Zhou, Audrey A. Sherman, Wayne K. Dunshee, Wendi J. Winkler
Life of this patent
Estimating the term…
Abstract
Pressure sensitive adhesive compositions comprising an unreactive mixture of polydiorganosiloxane polyurea copolymer, diluent, and silicate tackifying resin. The compositions are useful for articles such as medical devices.
Claims17
A medical device comprising:
- a substrate;
- and
- a pressure sensitive adhesive composition disposed on the substrate;
- wherein the adhesive exhibits a 180° peel adhesion force from polypropylene of less than 100 g/linear inch at a rate of 90 inches per minute and the adhesive composition comprises an unreactive mixture of
- about 10 wt-% to about 20 wt-% polydiorganosiloxane polyurea copolymer;
- 30 wt-% to 50 wt-% of a diluent, wherein the diluent has a number average molecular weight of no more than about 30,000 g/mole;
- and
- greater than 30 wt-% to less than about 60 wt-% of silicate tackifying resin.
5 more elements
A medical device comprising:
- a substrate;
- and
- a pressure sensitive adhesive composition disposed on the substrate;
- wherein the adhesive composition comprises an unreactive mixture of
- about 10 wt-% to about 20 wt-% of polydiorganosiloxane polyurea copolymer;
- 30 to 50 wt-% of a diluent, wherein the diluent has a number average molecular weight of no more than about 30,000 g/mole;
- and
- greater than 30 wt-% to less than about 60 wt-% of silicate tackifying resin.
5 more elements
A pressure sensitive adhesive composition comprising an unreactive mixture of
- about 10 wt-% to about 20 wt-% of a polydiorganosiloxane polyurea copolymer;
- 30 wt-% to 50 wt-% of a diluent, wherein the diluent has a number average molecular weight of no more than about 30,000 g/mole;
- and
- greater than 30 wt-% to less than 60 wt-% of silicate tackifying resin.
1 more element
Dependencies are inferred from the claim text.