Chuiwah A Cheung from 4 Burniston Ct, Millstone, NJ 08844, age 60, Phone: (908)2817411

Polymer Blends From Interpolymers Of Ethylene/Α-Olefins And Flexible Molded Articles Made Therefrom
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US Patent:

7714071, May 11, 2010
Filed:

Mar 15, 2006
Appl. No.:

11/376956
Inventors:

Stephen M. Hoenig - Lake Jackson TX, US
Yunwa W. Cheung - Lake Jackson TX, US
Daniel G. Moldovan - Danbury TX, US
Wenbin Liang - Sugar Land TX, US
Chuiwah A. Cheung - Lake Jackson TX, US
Ray A. Lewis - Midland MI, US
John Newton - Lake Jackson TX, US
Assignee:

Dow Global Technologies Inc. - Midland MI
International Classification:

C08L 23/00
C08L 23/04
C08G 18/42
C08K 5/00
US Classification:

525191, 525240, 524500, 524515
Abstract:

Polymer blends comprises 1) at least one ethylene/α-olefin interpolymer and 2) at least one polyolefin, or at least one styrenic block copolymer, or a combination thereof. Such polyolefins include, but are not limited to, high melt strength high density polyethylene and high melt strength polypropylene. The ethylene/α-olefin interpolymers are random block copolymers comprising at least a hard block and at least a soft block. The polyolefins can be homopolymers or interpolymers. The resulting polymer blends can be used to make flexible molded articles.

Propylene Copolymer Foams
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US Patent:

20020151611, Oct 17, 2002
Filed:

Dec 12, 2001
Appl. No.:

10/021774
Inventors:

Johan Thoen - Terneuzen, NL
Chuiwah Cheung - Lake Jackson TX, US
Bharat Chaudhary - Pearland TX, US
International Classification:

C08J009/00
US Classification:

521/142000
Abstract:

A foam comprising a propylene copolymer material comprising at least 50 weight percent of units derived from propylene, based on the total propylene copolymer material, and units derived from ethylenically unsaturated comonomers and having a melt flow rate in the range of from 0.5 to 8 g/10 min, a melt strength of at least 5 cN, and a melt drawability of at least 20 mm/s, process for making a foam using such a propylene copolymer material, process for making a foam in the form of thermoplastic foam beads using such a propylene copolymer material, and an expandable composition comprising such a propylene copolymer material.

Polyester Compositions For Multilayer Extrusion And Barrier Performance
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US Patent:

20030215655, Nov 20, 2003
Filed:

Nov 1, 2002
Appl. No.:

10/275135
Inventors:

Mark Barger - Midland MI, US
Joseph Schomaker - Mt. Pleasant MI, US
Ravi Ramanathan - Midland MI, US
Malcolm Finlayson - Houston TX, US
Chuiwah Cheung - Lake Jackson TX, US
Kalyan Sehanobish - Lake Jackson TX, US
International Classification:

B32B027/06
US Classification:

428/483000, 428/500000
Abstract:

Improved multi-layer coextruded blow-molded objects (such as fuel containers) having at least a barrier layer and a support layer are disclosed together with improved methods for preparing such objects. The barrier layer includes an amount of modified polyolefin having approximately the same density as the support layer, wherein the modified polyolefin is prepared by grafting an unsaturated carboxylic acid or a derivative thereof to the polyolefin, the modified polyolefin being added in an amount such that the gas-barrier layer sufficiently adheres to the adjacent layer and such that the gas barrier properties of the fabricated article are still adequate. The present invention also relates to modification of the rheology of base resins, such as PET (a preferred material for the barrier layer), so that they more closely match the rheology of high density polyethylene (a preferred material for the support layer).

Adhesive Compositions And Use Thereof
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US Patent:

20140079897, Mar 20, 2014
Filed:

Sep 14, 2012
Appl. No.:

13/617440
Inventors:

Chuiwah Alice Cheung - Hillsborough NJ, US
Patrick James Hayes - Ringoes NJ, US
Stephane Belmudes - Bernardsville NJ, US
Assignee:

Henkel Corporation - Rocky Hill CT
International Classification:

C09J 123/08
US Classification:

428 343, 428355 AC, 428 342, 524528, 156334
Abstract:

The invention provides hot melt adhesive with wide service temperature ranges, methods of using the adhesive to bond substrates together, to close/seal cases and cartons and the like, and to articles of manufacture comprising the adhesive. The hot melt adhesive comprises a metallocene catalyzed polyethylene copolymer, less than 10 wt % of a functionalized metallocene catalyzed polyethylene copolymer, greater than 22 wt % of a wax, a tackifier and optionally, additives.

Contact Adhesives And Uses Thereof
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US Patent:

20210009869, Jan 14, 2021
Filed:

Sep 25, 2020
Appl. No.:

17/032919
Inventors:

- Duesseldorf, DE
Chuiwah Alice CHEUNG - Hillsborough NJ, US
International Classification:

C09J 153/00
C09J 7/21
C09J 7/38
Abstract:

The present invention provides pre-applied contact adhesives that maintains strong cohesiveness over extended time and varied temperature conditions, while balancing low adhesiveness to other substrates. The pre-applied adhesives are applied onto paperboard, corrugated board, Kraft paper, paper, plastic film, glass, and are suitable as label, package, envelope, carton, case, box, label, bag, multilayer film, foil bag, bottle or band.

Chuiwah A Cheung