Appeal No. 2004-0600 Paper 16
Application No. 10/024,983 Page 8
26. Schulz describes ",T-diene crosslinked silicone elastomers "prepared by a
crosslinking reaction between (A) /Si !H containing polysiloxanes and (B) an alpha,
omega-diene in the presence of a platinum catalyst and (C) a low molecular weight
linear or cyclic polysiloxane" (c. 2, ll. 2-7), i.e., without oxyalkylene units in their
structure.
27. According to Schulz, these ",T-diene crosslinked silicone elastomers can be
swollen into silicone gels, pastes or powders (c. 1, ll. 15-7; c. 2, ll. 12-21) for use
(a) in a variety of personal care products, e.g., antiperspirants and deodorants, skin
creams, facial treatments, shaving lotions, soaps, shampoos, cosmetics, and "as
delivery systems for oil and water soluble substances such as vitamins" (c. 7, ll. 40-58),
and (b) beyond the personal care arena, e.g., as electrical cable filler or insulation or as
a carrier for pharmaceuticals, biocides, herbicides, pesticides, and other biologically
active substances (c. 7, l. 66 - c. 8, l. 18).
28. Further according to Schulz, pastes formed from these ",T-diene crosslinked
silicone elastomer "have excellent properties including clarity, thixotropy, shear thinning,
and spread smoothly on the skin", while powders are said to have "the unique property
of being easily rubbed-in on the skin" (c. 2, ll. 11-19). Still further according to Schulz,
"[t]hese materials are ideal for use in solid cosmetics such as antiperspirants and
deodorants" (c. 2, ll. 20-21).
29. An antiperspirant formulation described in Schulz Example 3, Table I (c. 6), is
Page: Previous 1 2 3 4 5 6 7 8 9 10 11 12 13 14 Next
Last modified: November 3, 2007