Method for production of water/oil repellent composition and...

Details Method for production of water/oil repellent composition and... Method for production of water/oil repellent composition and...

2011-08-02

2011-08-02

Egwim, Kelechi C (Department: 1762)

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Polymers from only ethylenic monomers or processes of...

C526S242000, C526S245000, C526S246000, C526S247000

Reexamination Certificate

active

07989567

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 C1-20polyfluoroalkyl 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 R1is a methyl group or an ethyl group, a is an integer of from 0 to 2, and b is 0 or 1.

REFERENCES:
patent: 6649719 (2003-11-01), Moore et al.
patent: 2006/0142518 (2006-06-01), Qiu et al.
patent: 10-212305 (1998-08-01), None
patent: 2005-272557 (2005-10-01), None
patent: 2006-163094 (2006-06-01), None
patent: 02/083809 (2002-10-01), None
patent: 2004/035708 (2004-04-01), None
U.S. Appl. No. 12/652,785, filed Jan. 6, 2010, Hirono, et al.

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