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US 2019/0167468 A1Published application
Hydrophilic polymer coatings with durable lubricity and compositions and methods thereof
AssigneeHydroGlyde Coatings LLC
InventorsStacy Lee Chin, Benjamin Goldman Cooper, Ruiqing Xiao, Mark W. Grinstaff
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Abstract
The invention provides a novel hydrophilic polymer and latex polymer blend coating formulation and compositions thereof, and their use on various devices (e.g., prophylactic and medical devices) to form hydrophilic and flexible coatings with durable lubricity.
Claims37
An aqueous composition, comprising:
- a hydrophilic polymer;
- a suspension of latex polymer microparticles;
- and
- optionally, one or more of vulcanizing or accelerating agents,
- wherein
- the hydrophilic polymer has a mean molecular weight in the range from about 1 kDa to about 10,000 kDa and is present in the composition at a concentration from about 2 w/v % to about 10 w/v %;
- the latex polymer microparticles are present in the composition at a concentration from about 20 w/v % to about 65 w/v %;
- and
- the weight ratio of the hydrophilic polymer to the latex polymer microparticles is in the range from about 1:1 to about 10:1,
- wherein the aqueous composition is an evenly mixed and stable suspension having a viscosity in the range from about 10 cP to about 1010 cP.
7 more elements
2-8. (canceled)
A composition formed by mixing:
- a first aqueous solution of a hydrophilic polymer with a concentration in the range from about 1 w/v % to about 20 w/v %;
- and
- a second aqueous suspension of latex polymer microparticles with a concentration in the range from about 20 w/v % to about 70 w/v %;
- and
- wherein
- the hydrophilic polymer has a mean molecular weight in the range from about 1 kDa to about 1,000 kDa;
- and
- the volume ratio of the first aqueous solution to the second aqueous suspension is in the range from about 1:1 to about 1:3.
5 more elements
(canceled)
22-24. (canceled)
27-28. (canceled)
A latex condom, comprising:
- a sheath of an elastomeric material selected from natural or synthetic rubber latex, the sheath having an outer surface and an inner surface;
- and
- a layered coating comprising a first or base layer disposed on and adhered to at least a portion of the outer surface of the sheath and a second or top layer disposed on and adhered to at least a portion of the first or base layer,
- wherein
- the first or base layer is a cured latex polymer;
- and
- the second or top layer is a cured blend of a latex polymer and a hydrophilic polymer having a mean molecular weight in the range from about 1 kDa to about 1,000 Da, wherein the weight ratio of the hydrophilic polymer to the latex polymer is in the range from about 10:1 to about 1:10.
4 more elements
(canceled)
44-45. (canceled)
A method for manufacturing a condom, comprising:
- providing a sheath of an elastomeric material selected from natural or synthetic rubber latex, the sheath having an outer surface and an inner surface;
- depositing a first layer of an aqueous suspension of a latex polymer to at least a portion of the outer surface of the sheath;
- curing the latex polymer with exposure to heat for a time sufficient to form a first or base layer of cured latex polymer;
- depositing a second layer of a composition, comprising a hydrophilic polymer and a suspension of latex polymer, to at least a portion of the first or base layer;
- and
- curing the second layer of hydrophilic polymer and latex polymer with exposure to heat for a time sufficient to form a second or top layer,
- wherein
- the hydrophilic polymer has a mean molecular weight in the range from about 1 kDa to about 1,000 kDa and is present in the composition at a concentration from about 2 w/v % to about 10 w/v %;
- the latex polymer microparticles are present in the composition at a concentration from about 20 w/v % to about 60 w/v %;
- and
- the weight ratio of the hydrophilic polymer to the latex polymer microparticles is in the range from about 1:1 to about 10:1.
8 more elements
47-55. (canceled)
Dependencies are inferred from the claim text.