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Silicone polymer, paste-like silicone composition, and w/o-type cosmetic composition comprising the same

  • US 5,412,004 A
  • Filed: 02/25/1994
  • Issued: 05/02/1995
  • Est. Priority Date: 11/21/1991
  • Status: Expired due to Term
First Claim
Patent Images

1. A water-in-oil cosmetic composition comprising:

  • (a) an oil phase component which comprises (i) a pasty silicone composition which can disperse water and (ii) silicic acid anhydride or hydrophobic silica, or both; and

    (b) at least one water phase component comprising water and water soluble components;

    wherein the pasty like silicone composition is prepared by kneading 100 parts by weight of a silicone polymer and 5 to 1,000 parts by weight of a silicone oil under a sufficient shearing force to produce a smooth and homogeneous outward appearance, andwherein the silicone polymer is prepared by the addition polymerization of the following components (I) and (II);

    (I) an organohydrogenpolysiloxane represented by the following formula (1),
    
    
    space="preserve" listing-type="equation">R.sup.1.sub.a R.sup.2.sub.b H.sub.c SiO.sub.(4-a-b-c)/2 (

         1)whereinR1 represents a substituted or unsubstituted alkyl, aryl, or aralkyl group having 1 to 18 carbon atoms, or a halogenated hydrocarbon group;

    R2 represents a group,
    
    
    space="preserve" listing-type="equation">--C.sub.n H.sub.2n O(C.sub.2 H.sub.4 O).sub.d (C.sub.3 H.sub.6 O).sub.e R.sup.3 (

         3)whereinR3 is a hydrogen, a saturated aliphatic hydrocarbon group having 1 to 10 carbon atoms, or a group --(CO)--R5, wherein R5 is a saturated aliphatic hydrocarbon group having 1 to 5 carbon atoms,d is an integer of 2 to 200, ande is an integer of 0 to 200,provided that d+e is 3 to 200, and n is 2 to 6;

    a is a value satisfying inequality 1.0≦

    a≦

    2.5;

    b is a value satisfying inequality 0.001≦

    b≦

    1.0; and

    c is a value satisfying inequality 0.001≦

    c≦

    1.0;

    or an organohydrogenpolysiloxane represented by the following formula (2),
    
    
    space="preserve" listing-type="equation">R.sup.1.sub.f H.sub.g SiO.sub.(4-f-g)/2 (

         2)whereinR1 is the same as defined in formula (1),f is a value satisfying inequality 1.0≦

    f≦

    3.0,g is a value satisfying inequality 0.001 ≦

    g ≦

    1.5;

    or a mixture of said organohydrogenpolysiloxanes of formulas (1) and (2), and(II) a polyoxyalkylene represented by the following formula (A),
    
    
    space="preserve" listing-type="equation">C.sub.m H.sub.2m-1 O(C.sub.2 H.sub.4 O).sub.h (C.sub.3 H.sub.6 O).sub.i C.sub.m H.sub.2m-1 (A)whereinh is an integer of 2 to 200,i is an integer of 0 to 200, provided that h+i is 3 to 200, andm is 2 to 6,or an organopolysiloxane represented by the following formula (B),
    
    
    space="preserve" listing-type="equation">R.sup.1.sub.j R.sup.4.sub.k SiO.sub.(4-j-k)/2 (B)whereinR1 is the same as defined in formula (1),R4 is a monovalent hydrocarbon group having an aliphatic unsaturated bond at the terminal thereof and containing 2 to 10 carbon atoms,j is a value satisfying inequality 1.0≦

    j≦

    3.0, andk is a value satisfying inequality 0.001≦

    k≦

    1.5,or a mixture of the polyoxyalkylene of formula (A) and the organopolysiloxane of formula (B),wherein at least one organohydrogenpolysiloxane of formula (1) or at least one polyoxyalkylene of formula (A) is contained as an essential component of the addition polymerization.

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