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US 10,239,997 B2Granted
Surface treatment agent for substrate, comprising perfluoropolyether group-containing phosphate compound
AssigneeAGC Inc.
InventorKiyotaka Takao
Life of this patent
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Abstract
To provide a surface treatment agent capable of imparting excellent water/oil repellency, fingerprint stain removability, abrasion resistance and lubricity to the surface of a substrate. A surface treatment agent for a substrate, comprising a perfluoropolyether group-containing phosphate compound, a coating agent comprising the surface treatment agent and a liquid medium, and a substrate having a surface layer formed from the surface treatment agent or the coating agent.
Claims9
A surface treatment agent, comprising a perfluoropolyether group-containing phosphate compound,
- wherein the perfluoropolyether group-containing phosphate compound is a compound represented by formula (1):
- B1—(CmF2mO)n1-A1 (1)
- wherein A1 is a monovalent organic group having at least one phosphoric acid group at its terminal, B1 is RF1—O— or D1-Q1-O—CH2— and a compound represented by the formula (1) wherein A1 is a monovalent organic group having at least one phosphoric acid group at its terminal, B1 is A2-O—, wherein a content of the compound represented by the formula (1) wherein B1 is A2-O— is from 10 to 60 parts by mass, per 100 parts by mass in total of the compound represented by the formula (1) wherein B1 is RF1—O— or D1-Q1-O—CH2,
- wherein RF1 is a C1-6 perfluoroalkyl group, B1 is CF3— or CF3—O—, Q1 is a C1-20 fluoroalkylene group comprising a hydrogen atom, a C2-20 fluoroalkylene group comprising a hydrogen atom and having an etheric oxygen atom between carbon-carbon atoms, a C1-20 alkylene group, or a C2-20 alkylene group having an etheric oxygen atom between carbon-carbon atoms, and A2 is a monovalent organic group having at least one phosphoric acid group at its terminal,
- m is an integer of from 1 to 6, and
- n1 is an integer of from 2 to 200, and
- wherein (CmF2mO)n1 is a group represented by formula (2-1):
- (CrF2rO)n2(CsF2sO)n3 (2-1)
- wherein r is an integer of from 1 to 3, s is an integer of from 4 to 6, n2 is an integer of at least 1, n3 is an integer of at least 1, provided that n2+n3 is an integer of from 2 to 200, and a bonding order of (CrF2rO) and (CsF2sO) is not limited.
6 more elements
A mixture of a compound represented by formula (1):
- B1—(CmF2mO)n1-A1 (1)
- wherein A1 is a monovalent organic group having at least one phosphoric acid group at its terminal, B1 is RF1—O— or D1-Q1-O—CH2— and a compound represented by the formula (1) wherein A1 is a monovalent organic group having at least one phosphoric acid group at its terminal, B1 is A2-O—, wherein a content of the compound represented by the formula (1) wherein B1 is A2-O— is from 10 to 60 parts by mass, per 100 parts by mass in total of the compound represented by the formula (1) wherein B1 is RF1—O— or D1-Q1-O—CH2—,
- wherein RF1 is a C1-6 perfluoroalkyl group, B1 is CF3— or CF3—O—, Q1 is a C1-20 fluoroalkylene group comprising a hydrogen atom, a C2-20 fluoroalkylene group comprising a hydrogen atom and having an etheric oxygen atom between carbon-carbon atoms, a C1-20 alkylene group, or a C2-20 alkylene group having an etheric oxygen atom between carbon-carbon atoms, A2 is a monovalent organic group having at least one phosphoric acid group at its terminal,
- m is an integer of from 1 to 6, and
- n1 is an integer of from 2 to 200, and
- wherein (CmF2mO)n1 is a group represented by formula (2-1):
- (CrF2rO)n2(CsF2sO)n3 (2-1)
- wherein r is an integer of from 1 to 3, s is an integer of from 4 to 6, n2 is an integer of at least 1, n3 is an integer of at least 1, provided that n2+n3 is an integer of from 2 to 200, and a bonding order of (CrF2rO) and (CsF2sO) is not limited.
5 more elements
Dependencies are inferred from the claim text.