Zinc oxide coated particles, compositions containing the...

Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Processes of preparing a desired or intentional composition...

Reexamination Certificate

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C523S210000, C524S425000, C524S432000, C524S445000, C524S449000, C524S451000, C524S492000, C428S403000, C428S702000

Reexamination Certificate

active

07635729

ABSTRACT:
Zinc oxide and/or zinc carbonate coated particles, methods of coating particles with zinc oxide and/or zinc carbonate, and various applications of such coated particles, including applications in cosmetics, rubber, and other polymer materials, are disclosed. As compared to rubber formulations with zinc oxide and core materials added separately, formulations including the present coated particles may have a higher transparency, lower Mooney viscosity and lower minimum torque, improved dispersability, a higher modulus at 100% and/or at 300% elongation, a higher tensile strength, better aging resistance, better abrasion resistance, lower density, and/or lower heat build up. Thus, products containing the present coated particles may enjoy similar or better properties than comparative products that include a conventional filler and/or zinc oxide per se, and the present coated particles may result in cost savings for the corresponding product formulations.

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PCT International Search Report dated Feb. 22, 2007; International Application No. PCT/US 06/37229; Zinc Oxide Coated Particles, Compositions Containing the Same, and Methods for Making the Same; 2 Pages.
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Raymond L. Nip; Zinc Oxide Coated Particles, Compositions Containing the Same, and Methods for Making the Same; International Application No. PCT/US2006/037229; International Preliminary Report on Patentability dated Sep. 24, 2008; 10 pages; International Preliminary Examining Authority/US.

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