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US 5,853,894 AGranted
Laboratory vessel having hydrophobic coating and process for manufacturing same
AssigneeCytonix Corporation
InventorJames F. Brown
Life of this patent
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AssigneeCytonix Corporation
InventorJames F. Brown
Estimating the term…
Laboratory vessels are coated on an operational surface thereof with a hydrophobic coating polymer or reactive monomer to form a coating having an exposed surface populated with 30% by area or more terminal trifluoromethyl groups. Laboratory vessels coated with such coating solutions are provided having extremely low surface energies and high resistance to solvent attack. Methods of forming hydrophobic coatings on laboratory vessels are also provided and include methods of forming exposed coating surfaces having populations of from about 30% by area to 100% by area trifluoromethyl groups. The hydrophobic coatings may be prepared from solutions, suspensions or powdered materials containing a fluoroalkyl ethylenically unsaturated monomer substantially free of any crosslinking, having from about 3 to about 20 carbon atoms, and containing at least one terminal trifluoromethyl group, or containing a polymerization product of such a monomer. The trifluoromethyl containing component may instead be preinjected or coinjected onto a surface of a molded vessel.
A laboratory vessel, said vessel comprising a vessel material having a surface intended to contact a liquid and a coating applied to at least a portion of the surface, wherein said coating comprises the polymerization product of at least one substantially non-branched fluorinated monomer, said fluorinated monomer having from about 3 to about 20 carbon atoms and at least one terminal trifluoromethyl group, said coating comprising a coating surface having a surface area populated with 30% by area or more trifluoromethyl groups and a surface energy of about 22 dynes/cm or lower at 20.degree. C.
A laboratory vessel, said vessel comprising a vessel material having a surface intended to contact a liquid and a coating applied to at least a portion of the surface, wherein said coating comprises the polymerization product of at least one fluorinated monomer, said fluorinated monomer having from about 3 to about 20 carbon atoms and at least one terminal trifluoromethyl group, said coating having a surface area populated with 30% by area or more trifluoromethyl groups, and a surface energy of about 22 dynes/cm or lower at 20.degree. C., and further comprising a micropowder which provides a rough surface to said coating.
A laboratory vessel, said vessel comprising a vessel material having a surface intended to contact a liquid, a first coating and a second coating, said first coating being applied to at least a portion of the surface, wherein said first coating comprises the polymerization product of at least one fluorinated monomer, said fluorinated monomer having from about 3 to about 20 carbon atoms and at least one terminal trifluoromethyl group, said first coating having a surface area populated with 30% by area or more trifluoromethyl groups, and a surface energy of about 22 dynes/cm or lower at 20.degree. C., said second coating comprising the polymerization product of a second fluorinated monomer, said second fluorinated monomer having from about 3 to about 20 carbon atoms, at least one terminal trifluoromethyl group, and a micropowder which provides said second coating with a rough surface, said second coating having a surface area populated with 30% by area or more trifluoromethyl groups and a surface energy of about 22 dynes/cm or lower at 20.degree. C., wherein the second coating forms a sample retaining barrier on said surface for retaining an aqueous sample within said barrier, and said first coating is substantially free of surface roughness and surrounds the second coating.
A process for coating a laboratory vessel with a hydrophobic material comprising a polymerization product of a fluorinated monomer, said process comprising the steps of:
A process for coating a laboratory vessel with a hydrophobic material comprising a polymerization product of a fluorinated monomer, said process comprising the steps of:
A process for coating a laboratory vessel with a hydrophobic material comprising a polymerization product of a fluorinated monomer, said process comprising the steps of:
A process for coating a laboratory vessel with a hydrophobic material comprising a polymerization product of a fluorinated monomer, said process comprising the steps of:
A composition of matter comprising at least one fluorinated component, and a micropowder, said at least one fluorinated component comprising a fluorinated monomer or a polymerization product thereof, said fluorinated monomer having from about 3 to about 20 carbon atoms and at least one terminal trifluoromethyl group, said composition being able to provide a coating upon application to a surface of an article, said coating having an exposed surface area populated with 30% by area or more trifluoromethyl groups and a surface energy of about 22 dynes/cm or lower at 20.degree. C., and wherein said micropowder provides a rough surface to said coating.
Dependencies are inferred from the claim text.