| 摘要 |
It is possible to obtain a porous substrate having a water/oil repellent-treated surface and a moisture-permeable waterproofing film, which has favorable water/oil repellency and wash durability, through which penetration of a coating liquid for formation of the moisture-permeable waterproofing film is suppressed, and from which peeling of the moisture-permeable waterproofing film is suppressed.;A water/oil repellent composition comprising a copolymer (A) having from 60 to 95 mass % of units based on a monomer having a RF group having at most 6 carbon atoms and from 5 to 40 mass % of units based on vinylidene chloride, a copolymer (B) having from 50 to 95 mass % of units based on a halogenated olefin and from 5 to 50 mass % of units based on a monomer having a crosslinkable functional group, and a medium (C), wherein the proportion of the copolymer (A) is from 70 to 90 mass %, and the proportion of the copolymer (B) is from 10 to 30 mass %. |
| 主权项 |
1. A water/oil repellent composition which comprises a copolymer (A) having from 60 to 95 mass % of units based on the following monomer (a1) and from 5 to 40 mass % of units based on the following monomer (a2),
a copolymer (B) having from 50 to 95 mass % of units based on the following monomer (b1) and from 5 to 50 mass % of units based on the following monomer (b2), and a medium (C),wherein the proportion of the copolymer (A) is from 70 to 90 mass %, and the proportion of the copolymer (B) is from 10 to 30 mass % relative to the total amount (100 mass %) of the copolymer (A) and the copolymer (B):
monomer (a1): a compound represented by the following formula (1):
(Z—Y)nX (1)wherein Z is a C1-6 polyfluoroalkyl group or a group represented by the following formula (2), Y is a bivalent organic group having no fluorine atom, or a single bond, n is 1 or 2, and X is, when n is 1, any one of the groups represented by the following formulae (3-1) to (3-5) and, when n is 2, any one of the groups represented by the following formulae (4-1) to (4-4):
CiF2i+1O(CFX1CF2O)jCFX2— (2)wherein i is an integer of from 1 to 6, j is an integer of from 0 to 10, and each of X1 and X2 is a fluorine atom or a trifluoromethyl group;
—CR2═CH2 (3-1) —C(O)OCR2═CH2 (3-2) —OC(O)CR2═CH2 (3-3) —OCH2-φ-CR2═CH2 (3-4) —OCH═CH2 (3-5)wherein R2 is a hydrogen atom, a methyl group or a halogen atom, and φ is a phenylene group;
—CH[—(CH2)mCR3═CH2]— (4-1) —CH[—(CH2)mC(O)OCR3═CH2]— (4-2) —CH[—(CH2)mOC(O)CR3═CH2]— (4-3) —OC(O)CH═CHC(O)O— (4-4)where R3 is a hydrogen atom, a methyl group or a halogen atom, and m is an integer of from 0 to 4;
monomer (a2): vinylidene chloride; monomer (b1): a halogenated olefin; and monomer (b2): a monomer having no polyfluoroalkyl group and having a crosslinkable functional group. |
