Composition and treatment agent

Details Composition and treatment agent Composition and treatment agent

1999-08-19

2004-06-15

Reddick, Judy M. (Department: 1713)

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

Synthetic resins

At least one aryl ring which is part of a fused or bridged...

C427S331000, C427S385500, C427S387000, C427S393200, C521S065000, C524S262000, C524S263000, C524S265000, C524S266000, C524S267000, C524S268000, C524S297000, C524S317000, C524S356000, C524S361000, C524S368000, C524S376000, C524S378000, C524S379000

Reexamination Certificate

active

06750277

ABSTRACT:

FIELD OF THE INVENTION
The present invention relates to a novel composition, a water and oil repellent and a water and oil repellent product.
RELATED ART
A conventional water and oil repellent required a heat treatment at 100° C. or more as an essential step to impart high water and oil repellency, but various water and oil repellents have been proposed to improve processability of the water and oil repellents.
Japanese Patent Kokoku Publication No. 67511/1988 discloses a polymer obtained by binding a branch segment having a blocked fluoroalkyl group to a trunk segment of a diene copolymer, and Japanese Patent Kokai Publication No.71977/1983 discloses that a copolymer comprising a monomer having a fluoroalkyl group and a cross-linking monomer as an essential component is a water and oil repellent which imparts high water and oil repellency in a heat treatment step at low temperature. However, when both of them are dried at room temperature, the water and oil repellency is insufficient.
Furthermore, U.S. Pat. No. 5,350,795 discloses that a composition comprising fluoroacrylate/polyalkyleneglycol (meth)acrylate/polyalkyleneglycol di(meth)acrylate copolymer and Rf-containing polyalkoxypolyurethane is a water and oil repellent which imparts high water and oil repellency when it is dried at room temperature. However the water repellency is insufficient.
A conventional water and oil repellent requires a heat treatment as an essential step to impart high water and oil repellency, and sufficient water and oil repellency could not be imparted without a heat treatment.
SUMMARY OF THE INVENTION
An object of the present invention is to provide a composition which imparts high water and oil repellency only by drying at room temperature (0 to 30° C.) without requiring a heat treatment step.
Another object of the present invention is to provide a water and oil repellent product or article comprising said composition.
The present invention provides a composition comprising
(A) a binary or more copolymer which comprises
(1) repeating units which impart water and oil repellency,
(2) repeating units which impart a solubility in a firm-forming auxiliary,
(3) optional repeating units which lower the glass transition temperature of the polymer, and
(4) optional repeating units which impart an affinity with a substrate, and
(B) a film-forming auxiliary consisting of an organic solvent which dissolves or swells the copolymer.
DETAILED DESCRIPTION OF THE INVENTION
Repeating units (1) which impart water and oil repellency may be (I) repeating units which are derived from a monomer having a fluoroalkyl group, a carbon-carbon double bond, and optionally a urethane or urea bond.
Repeating units (2) which impart solubility in (or compatibility with) a film-forming auxiliary may be (II) repeating units which are derived from a monomer having a urethane or urea bond and a carbon-carbon double bond, but no fluorine atom; or (III) repeating units which are derived from a monomer having a carbon-carbon double bond, the homopolymer of said monomer having a glass transition temperature (Tg) of at most 50° C.
Repeating units (3) which lower the glass transition temperature of the polymer may be (III) repeating units which are derived from a monomer having a carbon-carbon double bond, the homopolymer of said monomer having a glass transition temperature (Tg) of at most 50° C.
Repeating units (4) which impart an affinity with a substrate may be (IV) repeating units which are derived from a monomer having a hydrophilic group and a carbon-carbon double bond, or (V) repeating units which are derived from a monomer having a chlorine atom and a carbon-carbon double bond.
The present invention provides a composition comprising
(A) a copolymer which comprises
(I) repeating units which are derived from a monomer having a fluoroalkyl group, a carbon-carbon double bond, and optionally a urethane or urea bond,
(II) optional repeating units which are derived from a monomer having a urethane or urea bond and a carbon-carbon double bond, but no fluorine atom,
(III) optional repeating units which are derived from a monomer having a carbon-carbon double bond, the homopolymer of said monomer having a glass transition temperature (Tg) of 50° C. or less,
(IV) optional repeating units which are derived from a monomer having a hydrophilic group and a carbon-carbon double bond, and
(V) optional repeating units which are derived from a monomer having a chlorine atom and a carbon-carbon double bond and
(B) a film-forming auxiliary consisting of an organic solvent which dissolves or swells the copolymer,
wherein at least one of the repeating units (II) and the repeating units (III) is essential in the copolymer (A).
The composition of the present invention is suitable for a treatment agent, in particular a water and oil repellent.
The repeating units (I) are essential in the copolymer (A). The repeating units (II), the repeating units (III), the repeating units (IV) and the repeating units (V) are optional repeating units which have no need to be present. But at least one of the repeating units (II) and the repeating units (III) is essential.
The copolymer (A) in the composition of the present invention may be, for example:
(a) a copolymer having the repeating units (I) and (II),
(b) a copolymer having the repeating units (I) and (III),
(c) a copolymer having the repeating units (I), (II) and (III),
(d) a copolymer having the repeating units (I), (II) and (IV) and/or (V),
(e) a copolymer having the repeating units (I), (III) and (IV) and/or (V), or
(f) a copolymer having the repeating units (I), (II), (III) and (IV) and/or (V).
The present invention provides a copolymer wherein the repeating units (I), the repeating units (II) and the repeating units (III) are essential, and the repeating units (IV) and the repeating units (V) are optional.
In the repeating units (I) a fluoroalkyl group is preferably a perfluoroalkyl group.
The repeating units (I) are preferably repeating units which are derived from (meth)acrylic ester containing a fluoroalkyl group. A monomer which constitutes the repeating units (I) is preferably a compound of the formula:
Rf—R
1
—OCOC(R
2
)═CH
2
wherein Rf is a linear or branched fluoroalkyl group having 3 to 20 carbon atoms;
R
1
is a linear or branched alkylene group having 1 to 20 carbon atoms, a group of the formula: —SO
2
N(R
3
)R
4
— or a group of the formula: —CH
2
CH(OR
5
)CH
2
— in which R
3
is an alkyl group having 1 to 10 carbon atoms, R
4
is a linear or branched alkylene group having 1 to 10 carbon atoms, and R
5
is a hydrogen atom or an acyl group having 1 to 10 carbon atoms; and
R
2
is a hydrogen atom or a methyl group.
Examples of the monomer (I) having a fluoroalkyl group are not limited to, but include the followings:
CF
3
(CF
2
)
7
(CH
2
)
10
OCOCCH═CH
2
CF
3
(CF
2
)
7
(CH
2
)
10
OCOC(CH
3
)═CH
2
CF
3
(CF
2
)
6
CH
2
OCOCH═CH
2
CF
3
(CF
2
)
8
CH
2
OCOC(CH
3
)═CH
2
(CF
3
)
2
CF(CF
2
)
6
(CH
2
)
2
OCOCH═CH
2
(CF
3
)
2
CF(CF
2
)
8
(CH
2
)
2
OCOCH═CH
2
(CF
3
)
2
CF(CF
2
)
10
(CH
2
)
2
OCOCH═CH
2
(CF
3
)
2
CF(CF
2
)
6
(CH
2
)
2
OCOC(CH
3
)═CH
2
(CF
3
)
2
CF(CF
2
)
8
(CH
2
)
2
OCOC(CH
3
)═CH
2
(CF
3
)
2
CF(CF
2
)
10
(CH
2
)
2
OCOC(CH
3
)═CH
2
CF
3
CF
2
(CF
2
)
6
(CH
2
)
2
OCOCH═CH
2
CF
3
CF
2
(CF
2
)
8
(CH
2
)
2
OCOCH═CH
2
CF
3
CF
2
(CF
2
)
10
(CH
2
)
2
OCOCH═CH
2
CF
3
CF
2
(CF
2
)
6
(CH
2
)
2
OCOC(CH
3
)═CH
2
CF
3
CF
2
(CF
2
)
8
(CH
2
)2OCOC(CH
3
)═CH
2
CF
3
CF
2
(CF
2
)
10
(CH
2
)
2
OCOC(CH
3
)═CH
2
CF
3
(CF
2
)
7
SO
2
N(CH
3
)(CH
2
)
2
OCOCH═CH
2
CF
3
(CF
2
)
7
SO
2
N(C
2
H
5
)(CH
2
)
2
OCOCH═CH
2
(CF
3
)
2
CF(CF
2
)
8
CH
2
CH(OCOCH
3
)CH
2
OCOC(CH
3
)═CH
2
(CF
3
)
2
CF(CF
2
)
6
CH
2
CH(OH)CH
2
OCOCH═CH
2
The monomer (I) having a urethane or urea bond and a fluoroalkyl group may be a compound of the general formula:
Rf
1
—X
1
—A
1
—CONH—Y
1
—NHCO—A
2
—O—C(═O)—CR
3
═CH
2
wherein Rf
1
is a fluoroalkyl group having 4 to 16 carbon atoms;
X
1
is —R
1
—, —CON(R
2
)—Q
1
— o

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