Method for production of water/oil repellent composition and article
US7989567B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 6, 2010 |
| Grant date | Aug 2, 2011 |
| Priority date | — |
| Expiry date | Jan 6, 2030 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F220/308
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
To provide a method for producing a water/oil repellent composition which can impart water/oil repellency to a surface of an article and has excellent durability (wash durability and heavy-rain durability) and an article which has water/oil repellency and is less susceptible to deterioration of water/oil repellency when it is washed or in heavy rain.A method for producing a water/oil repellent composition which comprises polymerizing a monomer component comprising the following monomer (a) in coexistence with the following compound (x) in a medium in the presence of a surfactant and a polymerization initiator: monomer (a) is a compound of the formula (Z—Y)nX wherein Z is a C1-20 polyfluoroalkyl group or the like, Y is a bivalent organic group or a single bond, n is 1 or 2, and X is a polymerizable unsaturated group; and the compound (x) is a compound having at least two groups of —(CH2)a—CHR1—(CH2)b—SH, wherein R1 is a methyl group or an ethyl group, a is an integer of from 0 to 2, and b is 0 or 1.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.