Elastomeric silicone terpolymer

• US 6,200,581 B1
• Filed: 04/28/1999
• Issued: 03/13/2001
• Est. Priority Date: 04/28/1999
• Status: Expired due to Term

• Current Assignee: Dow, Inc.
• Original Assignee: Dow, Inc.
• Inventors: Lin, Zuchen, Schulz, William James Jr., Smith, Janet Mary
• Primary Examiner(s): Page, Thorman K.
• Assistant Examiner(s): DI NOLA BARON, LILIANA
• Application Number:
  US09/299,864
• Time in Patent Office: 685 Days
• Field of Search: 424/65, 424/70.1, 424/70.12, 424/76.1, 424/79, 424/61, 424/63, 424/64, 424/73, 424/47, 424/402, 424/404, 524/731, 524/261, 524/860, 528/32, 514/937
• US Class Current: 424/401
• CPC Class Codes: A61K 8/0208 Tissues; Wipes; Patches
• CPC Class Codes: A61K 8/04 Dispersions; Emulsions
• CPC Class Codes: A61K 8/042 Gels
• CPC Class Codes: A61K 8/066 Multiple emulsions, e.g. water-in-oil-in-water
• CPC Class Codes: A61K 8/894 modified by a polyoxyalkylene group, e.g. cetyl dimethicone copolyol
• CPC Class Codes: A61Q 19/00 Preparations for care of the skin
• CPC Class Codes: A61Q 5/00 Preparations for care of the hair
• CPC Class Codes: C08G 77/46 containing polyether sequences
• CPC Class Codes: C08G 77/50 by carbon linkages C08G77/485 takes precedence
• CPC Class Codes: Y10T 442/20 Coated or impregnated woven, knit, or nonwoven fabric which is not [a] associated with another preformed layer or fiber layer or, [b] with respect to woven and knit, characterized, respectively, by a particular or differential weave or knit, wherein the coating or impregnation is neither a foamed material nor a free metal or alloy layer

Abstract

Three-dimensional silicone elastomers having both polyether and higher alkyl functionality present in their molecules are in the form of networks of crosslinked linear siloxanes with polyether and olefin containing repeating units. Representative units are EO₇ and EO₁₂ for the polyether functionality, and C₁₀, C₁₂, and C₁₈ alkyl functionality for the olefin. These gelled molecules are multipurpose type materials, and consequently they are capable of being useful in a variety of multiphased formulations in personal and health care applications.

Claims

1. A composition comprising an elastomeric silicone terpolymer prepared by a method comprising combining and reacting:

(A) an ≡

Si—

H containing polysiloxane of the formula R₃SiO(R′

₂SiO)_a(R″

HSiO)_bSiR₃ or the formula (R′

₂SiO)_a′

(R″

HSiO)_b′

, and optionally an ≡

Si—

H containing polysiloxane of the formula HR₂SiO(R′

₂SiO)_cSiR₂H or an ≡

Si—

H containing polysiloxane of the formula HR₂SiO(R′

₂SiO)_a(R″

HSiO)_bSiR₂H, where R, R′

, and R″

are alkyl groups with 1-6 carbon atoms, a is 0-250, a′

is 0-7, b is 1-250, b′

is 3-10, and c is 0-250;

(B) a mono-alkenyl polyether of the formula CH₂═

CH(CH₂)_fO(CH₂CH₂O)_g(CH₂CH₃CHO)_hT, or the formula CH₂═

CH—

Q—

O(CH₂CH₂O)_g(CH₂CH₃CHO)_hT, where T is hydrogen, a C₁-C₁₀ alkyl group, an aryl group, or a C₁-C₂₀ acyl group;

Q is a divalent linking group containing unsaturation;

f is 0-6, g is 4-100; and

h is zero or 1-100;

(C) an α

-olefin containing at least ten carbon atoms;

(D) an α

,ω

-unsaturated hydrocarbon selected from the group consisting of α

,ω

-dienes of the formula CH₂═

CH(CH₂)_dCH═

CH₂, α

,ω

-diynes of the formula CH≡

C(CH₂)_eC≡

CH, and α

,ω

-ene-ynes of the formula CH₂═

CH(CH₂)_eC≡

CH, where d is 1-20 and e is 0-20; and

(E) a platinum catalyst;

in the presence of

(F) an oil selected from the group consisting of (i) organic compounds, (ii) compounds containing a silicon atom, (iii) mixtures of organic compounds, (iv) mixtures of compounds containing a silicon atom, and (v) mixtures of organic compounds and compounds containing a silicon atom;

and allowing the reaction to continue until there is formed a crosslinked three-dimensional gelled network of an elastomeric silicone terpolymer.

2. A composition according to claim 1 in which the oil is a linear volatile methyl siloxane of the formula (CH₃)₃SiO{(CH₃)₂SiO}_kSi(CH₃)₃ where k is 0-5, or a cyclic volatile methyl siloxane of the formula {(CH₃)₂SiO}_m where m is 3-8, the volatile methyl siloxane have a boiling point less than about 250°

C. and a viscosity of 0.65-5.0 mm²/s.

3. A material comprising the composition according to claim 1 and an oil, wax, or oil-soluble active ingredient.

4. A material according to claim 3 including mineral oil, sunflower oil, petrolatum, or vitamin A acetate.

5. A material comprising the composition according to claim 1 and a diol or water-soluble active ingredient.

6. A material according to claim 5 including propylene glycol.

7. An emulsion containing the material according to claim 3.

8. An emulsion containing the material according to claim 5.

9. A multiple emulsion containing the material according to claim 3.

10. A multiple emulsion containing the material according to claim 5.

11. A method of treating hair, skin, or underarm comprising applying to the hair, skin, or underarm, the composition according to claim 1.

12. A method of treating cellulosic or synthetic nonwoven carrier substrates comprising applying to cellulosic or synthetic nonwoven carrier substrates the composition according to claim 1.