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US 12,392,693 B2Granted
Hydrophilic substrate and method for preparing hydrophilic substrate
AssigneeSumitomo Rubber Industries, Ltd.
InventorYasuhisa Minagawa
Life of this patent
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Abstract
Provided are hydrophilic substrates provided with a hydrophilic polymer layer having controlled surface uniformity and irregularities, and methods for preparing the hydrophilic substrates. Included are hydrophilic substrates including a substrate having a surface containing at least one group represented by —N(R1)2 or —N(R2)3+ wherein each R1 or R2 is the same or different and represents a hydrogen atom or a substituted or unsubstituted hydrocarbon group optionally containing a hetero atom; and a hydrophilic polymer layer provided on the surface of the substrate.
Claims6
A hydrophilic substrate, comprising:
- a substrate having a surface containing at least one group represented by —N(R1)2 or —N(R2)3+ wherein each R1 or R2 is the same or different and represents a hydrogen atom or a substituted or unsubstituted hydrocarbon group optionally containing a hetero atom;
- and
- a hydrophilic polymer layer provided on the surface of the substrate,
- wherein the at least one group represented by —N(R1)2 or —N(R2)3+ is introduced by treating the surface of the substrate with a silane coupling agent containing the at least one group represented by —N(R1)2 or —N(R2)3+,
- wherein the silane coupling agent is at least one selected from the group consisting of compounds represented by the following formulas (1-2) and (1-3 )
- wherein in formula (1-2),
- R11 to R13 are the same or different and each represent a hydrogen atom or a substituted or unsubstituted monovalent hydrocarbon group optionally containing a hetero atom;
- R16 to R18 are the same or different and each represent a substituted or unsubstituted monovalent hydrocarbon group optionally containing a hetero atom;
- R19 represents a substituted or unsubstituted divalent hydrocarbon group optionally containing a hetero atom;
- and
- X represents a halogen;
- wherein in formula (1-3),
- R21 to R23 are the same or different and each represent a hydrogen atom or a substituted or unsubstituted monovalent hydrocarbon group optionally containing a hetero atom;
- R24 to R26 are the same or different and each represent a substituted or unsubstituted monovalent hydrocarbon group optionally containing a hetero atom;
- R27 to R30 each represent a substituted or unsubstituted divalent hydrocarbon group optionally containing a hetero atom;
- X represents a halogen;
- and
- n represents the number of repetitions;
- and
- wherein the substrate is at least one selected from the group consisting of glass, acrylic resins, cycloolefin resins, carbonate resins, styrene resins, polyester resins, and polydimethylsiloxanes.
17 more elements
Dependencies are inferred from the claim text.