Resumes
Resumes
Connie Qian Phones & Addresses
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4335 Pine Blossom Trl, Houston, TX 77059 (281) 486-0567
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3211 Pleasant Cove Ct, Houston, TX 77059 (281) 486-0567
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Richmond, VA
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Baytown, TX
Publications
Us Patents
Rubber Blends Having Improved Stability And Green Strength
View pageUS Patent:
6552108, Apr 22, 2003
Filed:
Oct 11, 2000
Appl. No.:
09/686215
Inventors:
Hsien Chang Wang - Bellaire TX
Ilan Duvdevani - Houston TX
Connie R. Qian - Houston TX
Pawan Kumar Agarwal - Houston TX
Ilan Duvdevani - Houston TX
Connie R. Qian - Houston TX
Pawan Kumar Agarwal - Houston TX
Assignee:
ExxonMobil Chemical Patents Inc. - Houston TX
International Classification:
C08K 529
US Classification:
524251, 524515, 524528, 524236
Abstract:
The present invention relates generally to rubber compositions having improved green strength and thermal stability. These compositions comprise blends of a first rubber component, an isoolefin/para-alkylstyrene copolymer component, and an amine component reacted in situ prior to curing. The present invention further relates to methods for preparing these compositions.
Halogenated Elastomeric Compositions Having Improved Stability And Green Strength
View pageUS Patent:
6956075, Oct 18, 2005
Filed:
Oct 9, 2001
Appl. No.:
10/398302
Inventors:
Hsien-Chang Wang - Bellaire TX, US
Ilan Duvdevani - Houston TX, US
Connie R. Qian - Houston TX, US
Pawan K. Agarwal - Houston TX, US
Ilan Duvdevani - Houston TX, US
Connie R. Qian - Houston TX, US
Pawan K. Agarwal - Houston TX, US
Assignee:
ExxonMobil Chemical Patents Inc. - Houston TX
International Classification:
C08K005/29
US Classification:
524251, 524515, 524528, 524236
Abstract:
The present invention is a composition and a method of forming a composition, the composition comprising at least a halogenated elastomer and an amine or phosphine. An additional rubber component may be present in the composition of the invention. In one embodiment, the halogenated elastomer is a isoolefin copolymer comprising a halomethylstyrene derived unit. The amine or phosphine compound is represented by the formula (RRR)Q, wherein Q is a Group 15 element, and wherein Ris either hydrogen or a Cto Chydrocarbyl group, Ris either hydrogen or a Cto Chydrocarbyl group; and Ris either hydrogen or a Cto Chydrocarbyl group provided that at least one of R, Rand Ris not hydrogen. The additional rubber is selected from butyl rubber, halogenated butyl rubber, star-branched butyl rubber, halogenated star-branched butyl rubber, isobutylene homopolymer, butadiene rubber, neoprene, nitrile rubbers, ethylene/propylene/diene terpolymers, ethylene/propylene copolymers, styrene butadiene rubbers, polybutadiene, polyisoprene, isoolefin/alkylstyrene copolymer, halogenated isoolefin/alkylstyrene copolymer, natural rubber, polypropylene, polyethylene, polyurethane, polyvinyl chloride, silicon rubber, propylene oxide polymer, and mixtures thereof.
Isobutylene Based Elastomer Blends Having Improved Strength Elasticity, And Reduced Permeability
View pageUS Patent:
63264331, Dec 4, 2001
Filed:
May 11, 2000
Appl. No.:
9/569363
Inventors:
Hsien-Chang Wang - Bellaire TX
Ilan Duvdevani - Houston TX
Sudhin Datta - Houston TX
Connie R. Qian - Houston TX
Ilan Duvdevani - Houston TX
Sudhin Datta - Houston TX
Connie R. Qian - Houston TX
Assignee:
ExxonMobil Chemical Patents Inc. - Houston TX
International Classification:
C08L 2310
C08L 2326
C08L 2328
C08L 2326
C08L 2328
US Classification:
525191
Abstract:
The improved green strength, green elongation, and green relaxation properties of isobutylene based elastomers at elevated temperatures along with improved aging and barrier properties are achieved by blending semi-compatible, semi-crystalline polymers with the isobutylene elastomers. The improved properties are maintained in subsequent rubber compounds containing said blends and are particularly useful in tire and pharmaceutical container applications.