Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Mixing of two or more solid polymers; mixing of solid...
Reexamination Certificate
2008-11-07
2010-10-05
Wu, David (Department: 1796)
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Mixing of two or more solid polymers; mixing of solid...
C525S479000, C525S902000, C528S025000, C524S268000, C524S269000
Reexamination Certificate
active
07807751
ABSTRACT:
A core-shell particle is formed by a method that includes forming a crosslinked polyorganosiloxane core, reacting a graftlinking agent with the crosslinked polyorganosiloxane core, and polymerizing a poly(alkenyl aromatic) shell around the graftlinking agent-functionalized polyorganosiloxane core. The method produces a core-shell particle with improved adhesion between shell and core. The core-shell particle is useful as an impact modifier in thermoplastic compositions.
REFERENCES:
patent: 3220972 (1965-11-01), Lamoreaux
patent: 4812515 (1989-03-01), Kress et al.
patent: 5045595 (1991-09-01), Wang
patent: 5200465 (1993-04-01), Hellstern et al.
patent: 7015261 (2006-03-01), Zerafati et al.
patent: 7153899 (2006-12-01), Reddy et al.
patent: 2006/0089456 (2006-04-01), Lee et al.
patent: 2006/0148946 (2006-07-01), Lee et al.
patent: 2007/0021557 (2007-01-01), Lee et al.
patent: 2007/0213474 (2007-09-01), Ebenhoch et al.
patent: 0249964 (1987-12-01), None
patent: 369204 (1990-05-01), None
patent: 1207172 (2002-05-01), None
patent: 1676871 (2006-07-01), None
patent: WO 2005/108449 (2005-11-01), None
Hu, C.; Zhang, Y.; Li, W.; Gu, Q.; Journal of Applied Polymer Science, 105, 2571-2576, May 2007.
Gu, S.; Kondo, T.; Konno, M.; Journal of Colloid and Interface Science, 272, 314-320, 2004.
International Search Report and Written Opinion; International Application No. PCT/IB2009/050727; International Filing Date Feb. 23, 2009; Date of Mailing Jul. 2, 2009; 14 pages.
Mingxuan Zou et al., Preparation and characterization of core-shell polystyrene-polydimethylsiloxane particles by seeded polymerization, Polymer International, Published online Jun. 1, 2004, vol. 53, pp. 1033-1039, ISSN 0007-1641, Abstract, 2 pages.
International Searching Authority, International Search Report, PCT/US2009/034843, Date of Mailing: Oct. 12, 2009, 4 pages.
International Searching Authority, Written Opinion, PCT1US2009/034843, Date Mailed: Oct. 12, 2009, 5 pages.
J.C. Saam and D.J. Huebner, “Anionic emulsions of high molecular weight polydimethylsiloxane”, 3rd Int. Conf. Surf. Colloid Sci., 1979, 166.
Warrick, et al., “Silicone Elastomer Developments 1967-1977”, Rubber Chemistry and Technology, vol. 52, p. 437 ff., 1979.
J.C. Saam and D. J. Huebner, “Condensation Polymerization of Oligomeric Polydinnethylsiloxanols in Aqueous Emulsion”, J. Polym. Sci., Polym. Chem. Ed., vol. 120, pp. 3351 ff., 1982.
D.W. McCarthy and J.E. Mark, “Poly(dimethylsiloxane) elastomers from aqueous emulsions: I. Preparations, and characterization of the curing and aging process”, rubber Chemistry and Technology, vol. 71, p. 906 ff., 1998.
D.W. McCarthy and J.E. Mark, “Poly(dimethylsiloxane) elastomers from aqueous emulsions: III. Effects of blended silica fillers and γ-radiation-induced crosslinking”, Rubber Chemistry and Technology, vol. 71, p. 941 ff., 1998.
K. Landfester, “Polyreactions in Miniemulsions”, Macromol. Rapid Commun., vol. 22, pp. 896-936, 2001.
Zhang, Jiang and Yang, “Microemulsion polymerization of siloxane with nonionic surfactants as emulsifiers”, J. Appl. Polym. Sci., vol. 89, pp. 3587 ff. (2003).
U.S. Appl. No. 61/031,080, Core-Shell Particle, Method, and Composition, Feb. 25, 2008.
U.S. Appl. No. 61/031,087, Core-Shell Particle, Method, and Composition, Feb. 25, 2008.
Joncryl ADR-4368 Technical Brochure, 8 pages, Jan. 25, 2008.
ISO 1133, Plastics Determination of the melt mass-flow rate (MFR) and the melt volume-flow rate (MVR) of thermoplastics, 20 pages, Jun. 5, 2001.
UL 94, Tests for Flammability of Plastic Materials for Parts in Devices and Appliances, 52 pages, Dec. 12, 2003.
ASTM D648-06, Standard Test Method for Deflection Temperature of Plastics Under Flexural Load in the Edgewise Position, 13 pages, Jul. 31, 2006.
ISO 6603-2, Plastics Determination of puncture impact behaviour of rigid plastics, Part 2: Instrumented impact testing, Oct. 1, 2000, 28 pages.
Encyclopedia of Polymer Science and Engineering, Scattering to Structural Foams, vol. 15, 5 pages, May 12, 1986.
Mohite Amol Adhikrao
Muthukrishnan Sathya Narayanan
Som Abhijit
Cantor & Colburn LLP
Jones, Jr. Robert
Sabic Innovative Plastics IP B.V.
Wu David
LandOfFree
Core-shell particle, method, and composition does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Core-shell particle, method, and composition, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Core-shell particle, method, and composition will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4206583