Drug – bio-affecting and body treating compositions – Live hair or scalp treating compositions – Polymer containing
Reexamination Certificate
1998-06-01
2001-07-10
Page, Thurman K. (Department: 1615)
Drug, bio-affecting and body treating compositions
Live hair or scalp treating compositions
Polymer containing
C424S401000, C424S070100, C424S070110, C424S070900, C424S059000, C424S064000, C514S063000
Reexamination Certificate
active
06258347
ABSTRACT:
BACKGROUND OF THE INVENTION
The present invention relates to a novel film-forming silicone composition capable of forming a coating film on a substrate having excellent water resistance, perspiration resistance, oil resistance, glossiness and slipperiness and suitable as an additive ingredient in a cosmetic or toiletry preparation as well as a cosmetic or toiletry composition formulated therewith.
It is widely practiced in the prior art to formulate a toiletry preparation, in particular, for hair care treatment such as shampoos and hair rinses, with a silicone, i.e. organopolysiloxane, oil with an object to impart the hair with glossiness and slipperiness. As is disclosed in Japanese Patent Publication 7-29906, Japanese Patent Kokai 63-183517, 63-222109, 63-243018, 63-316713, 64-13012, 64-13013, 64-43342 and 1-272513 and elsewhere, formulation of a hair care treatment composition such as shampoos, rinses, hair treatments and hair conditioners with a silicone oil of high degree of polymerization has an effect to improve smoothness of combing or brushing and to prevent damages on the hair such as splitting. Japanese Patent Kokai 5-85918 also teaches that a protection of hair and improved sustainability of the effect can be obtained by the admixture of a hair care preparation with a silicone oil of high degree of polymerization having amino groups or ammonium groups in the molecular structure. The effectiveness of the silicone oils disclosed in the above mentioned prior art, however, is not quite satisfactory so that it is eagerly desired to develop a novel silicone-based film-forming composition capable of exhibiting further improved protection on hairs, i.e. oil resistance and slipperiness.
On the other hand, as is disclosed in Japanese Patent Publications 6-15448 and 6-15452 and Japanese Patent Kokai 61-161209, 61-161211, 62-298511, 62-298512, 62-298518 and 62-298519, film-forming silicone resins are used as an additive in skin care preparations and makeup preparations with an object to prevent collapsing of makeup by perspiration. A problem to be solved in connection with the use of a silicone resin is that users of such a preparation sometimes feel stickiness or stiffness on their skin treated therewith. In place of the above mentioned silicone resins, silicone oils of high degree of polymerization are also used in the same applications, as is taught in Japanese Patent Kokai 63-183515 and 63-183516, but such a formulation is inferior in respect of water resistance of the coating film as compared with the silicone resin-formulated preparations.
Further, Japanese Patent Kokai 7-233027 proposes use of a silicone resin having fluorine-substituted alkyl groups in the molecular structure as an additive in skin care and makeup preparations. Although an improvement can be obtained thereby in the water resistance, the problem of stickiness and stiffness of the skin treated with the preparation, as an inherence of silicone resin-formulated preparations, remains still unsolved.
A proposal is made in Japanese Patent Kokai 3-128311, 3-128312, 3-128909, 3-170518, 4-36218, 4-175318 and 4-359912 for the use of an acrylic silicone copolymer as an additive in toiletry and cosmetic preparations. A hair care treatment composition formulated with such a copolymeric silicone, however, is inferior in hair conditionability as compared with an ordinary silicone oil of a high degree of polymerization though excellent in the hair styling performance. When a skin care or makeup preparation is admixed with the copolymeric silicone, as is disclosed in Japanese Patent Kokai 2-25411, the problem of stickiness and stiffness of the skin treated therewith, like the formulations with a silicone resin, must be solved although such a preparation forms a film having good water resistance.
SUMMARY OF THE INVENTION
The present invention accordingly has an object, in view of the above mentioned problems in the conventional film-forming silicone materials as an additive in toiletry and cosmetic preparations, to provide a novel and improved silicone-based film-forming composition capable of forming a film having excellent water resistance, oil resistance and lubricity or slipperiness and imparting a toiletry or cosmetic preparation compounded therewith with excellent softness and glossiness as an inherent advantage of silicone oils of high degree of polymerization without the disadvantage of stickiness and stiffness on the skin treated therewith.
Thus, the film-forming silicone composition according to the invention is a uniform mixture which comprises:
(A) from 0.5 to 80% by weight of an organopolysiloxane of a high degree of polymerization which is a diorganopolysiloxane having a straightly linear molecular structure represented by the general formula
R
4
—SiR
1
2
—O—(—SiR
1
2
—O—)
k
—(—SiR
1
R
2
—O—)
m
—(—SiR
1
R
3
—O—)
n
—SiR
1
2
—R
4
, (I)
in which R
1
is an alkyl group, cycloalkyl group or aryl group having 1 to 20 carbon atoms, R
2
is a fluorine-substituted alkyl group having 1 to 15 carbon atoms, R
3
is an amino- or ammonium-functional organic group represented by the formula —R
5
Z, R
5
being an alkylene group having 2 to 6 carbon atoms and Z being a group of the formula —NR
6
2
, —N
+
R
6
3
A
−
, —NR
6
(CH
2
)
a
NR
6
2
or —NR
6
(CH
2
)
a
N
+
R
6
A
−
with the proviso that R
6
is a hydrogen atom or an alkyl group having 1 to 4 carbon atoms, A is a halogen atom and the subscript a is an integer of 2 to 6, R
4
is R
1
, R
2
, R
3
or a hydroxyl group, the subscripts k and m are each, independently from the other, a positive integer and the subscript n is 0 or a positive integer with the proviso that k+m+n is in the range from 2000 to 20,000, of which the content of nitrogen does not exceed 1% by weight and the content of fluorine is in the range from 1% to 50% by weight; and
(B) from 20 to 99.5% by weight of an oily compound selected from the group consisting of:
(B1) a diorganopolysiloxane having a straightly linear molecular structure represented by the general formula
R
1
3
Si—O—(—SiR
1
2
—O—)
p
—(—SiR
1
R
2
—O—)
q
—SiR
1
3
, (II)
in which R
1
and R
2
each, independently from the other, have the same meaning as defined above and the subscripts p and q each, independently from the other, are 0 or a positive integer not exceeding 500 with the proviso that p+q does not exceed 500, and having a viscosity not exceeding 1000 centistokes at 25° C.;
(B2) a cyclic diorganosiloxane oligomer represented by the general formula
in which R
1
and R
2
each, independently from the other, have the same meaning as defined above and the subscripts x and y are each, independently from the other, 0 or a positive integer not exceeding 7 with the proviso that x+y is a positive integer in the range from 3 to 7; and
(B3) an isoparaffin hydrocarbon compound having a boiling point in the range from 60 to 260° C. under normal pressure, the total amount of the components (A) and (B) being 100% by weight.
The invention further provides a hair care treatment composition which comprises:
(a) from 0.1 to 50% by weight of a surface active agent;
(b) from 0.1 to 20% by weight of the film-forming silicone composition defined above; and
(c) from 1 to 95% by weight of water, ethyl alcohol or a combination thereof.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
In the above defined film-forming silicone composition of the invention, the high-molecular diorganopolysiloxane as the component (A) is the film-forming ingredient and represented by the general formula (I) given above. In the general formula (I), R
1
is an alkyl group, cycloalkyl group or aryl group having 1 to 20 carbon atoms, R
2
is a fluorine-substituted alkyl group having 1 to 15 carbon atoms, R
3
is an amino- or ammonium-functional organic group represented by the formula —R
5
Z, R
5
being an alkylene group having 2 to 6 carbon atoms and Z being a group of the formula —NR
6
2
, —N
+
R
6
3
A
−
, —NR
6
(CH
2
)
a
NR
6
2
or —NR
6
(CH
2
)
a
N
+
R
6
A
−
with the proviso that R
6
is a
Aoki Hisashi
Sakuta Koji
Millen White Zelano & Branigan P.C.
Page Thurman K.
Seidleck Brian K.
Shin-Etsu Chemical Co. , Ltd.
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