WILLIE LAU
Pilots at Warren Rd, Prospectville, PA

6797775, Sep 28, 2004

Sep 13, 2001

09/951493

Willie Lau - Ambler PA
Paul Ralph Van Rheenen - Warminster PA

Rohm and Haas Company - Philadephia PA

C08L 5100

525 70, 525 88

A method of forming a thermoplastic melt blend including a segmental copolymer, wherein the melt blend displays improved processing characteristics, is disclosed. A method of forming a plastic article including a thermoplastic and a segmental copolymer is further disclosed, as is a plastic article formed thereby.

2004022, Nov 4, 2004

Mar 24, 2004

10/808808

Robert Solomon - Souderton PA, US
Ralph Even - Blue Bell PA, US
Willie Lau - Lower Gwynedd PA, US
David Fasano - Maple Glen PA, US
Karl Bromm - Forest Grove PA, US

C08L057/00

524/804000

An aqueous polymer composition including a plurality of comb copolymer particles is disclosed. The comb copolymer particles contain comb copolymer having a polymer backbone with at least one attached graft segment. The polymer backbone and the at least one graft segment have select compositional ranges and select glass transition temperature ranges. Further, the comb copolymer contains as a polymerized unit at least one select monomer such as, aldehyde reactive group-containing monomer or certain styrenic monomers. The aqueous polymer composition of the present invention is useful for preparing coatings having one or more improved properties such as dirt pickup resistance, gloss, gloss retention, alkyd adhesion, and tint retention. A method for forming a coated substrate from the aqueous polymer composition of this invention is also provided.

8304460, Nov 6, 2012

Jun 17, 2009

12/456473

Willie Lau - Lower Gwynedd PA, US
Donald C. Schall - Lansdale PA, US
Kimberly B. Kosto - Maple Glen PA, US
Joseph M. Rokowski - Barto PA, US

Rohm and Haas Company - Philadelphia PA

C08J 11/04

521 41, 521 40, 521 405, 521 425, 521 435, 521 44, 528480, 528499, 528520 R, 528502 F, 528503, 516 9, 516 98, 524 68, 524 71, 524922, 525 50, 525 55, 525 56, 525232, 428141, 428147

The present invention provides methods of making shapeable composites in the form of finely divided materials or articles and the materials and articles produced by the methods, the methods comprising forming mixtures by (i) treating an aqueous thermoplastic acrylic or vinyl polymer to increase the particle size thereof to a weight average particle size of 1 μm or more, and, optionally, dewatering to form a crumb mixture; and (ii) combining a thermoplastic acrylic or vinyl polymer with one or more waste rubber vulcanizate having a sieve particle size ranging from 10 to 600 μm in the amount of from 15 to 95 wt. %, based on the total weight of polymer and rubber to form a crumb slurry, such that (ii) can take place before, during, after (i) but before any dewatering, or after any dewatering; and (iii) thermoplastic processing the mixture. Thermoplastic processing can directly form articles, like sheets or films. The shapeable composites have excellent adhesion to other materials.

5760129, Jun 2, 1998

Jun 24, 1996

8/723147

Willie Lau - Ambler PA

Rohm and Haas Company - Philadelphia PA

C08L 516

524732

An aqueous polymerization method is disclosed for forming polymers containing, as polymerized units, at least one monomer having low water solubility, including the steps of: (1) complexing at least one monomer having low water solubility with a macromolecular organic compound having a hydrophobic cavity; and (2) polymerizing in an aqueous system from about 0. 1% to about 100%, by weight of the monomer component, based on the total weight of the polymer, of the complexed monomer having low water solubility with from about 0% to about 99. 9% by weight, based on the total weight of the polymer, of at least one monomer having high water solubility. The method is also useful for forming aqueous solution polymers having low water solubility. The method is useful for polymerizing, in an aqueous system, aqueous solution polymers or emulsion polymers, particularly random copolymers, of monomer having a low water solubility which heretofore could not be made satisfactorily without the addition of an organic solvent, comonomer or a high level of surfactant to aid in solubilizing the monomer having low water solubility. The method is also useful for improving the efficiency of chain transfer agents having low water solubility used in aqueous solution and emulsion polymerizations.

5521266, May 28, 1996

Oct 28, 1994

8/330660

Willie Lau - Ambler PA

Rohm and Haas Company - Philadelphia PA

C08F 210, C08F 222

526200

An aqueous polymerization method is disclosed for forming polymers containing, as polymerized units, at least one monomer having low water solubility, including the steps of: (1) complexing at least one monomer having low water solubility with a macromolecular organic compound having a hydrophobic cavity; and (2) polymerizing in an aqueous system from about 0. 1% to about 100%, by weight of the monomer component, based on the total weight of the polymer, of the complexed monomer having low water solubility with from about 0% to about 99. 9% by weight, based on the total weight of the polymer, of at least one monomer having high water solubility. The method is also useful for forming aqueous solution polymers having low water solubility. The method is useful for polymerizing, in an aqueous system, aqueous solution polymers or emulsion polymers, particularly random copolymers, of monomer having a low water solubility which heretofore could not be made satisfactorily without the addition of an organic solvent, comonomer or a high level of surfactant to aid in solubilizing the monomer having low water solubility. The method is also useful for improving the efficiency of chain transfer agents having low water solubility used in aqueous solution and emulsion polymerizations.

5376709, Dec 27, 1994

Mar 12, 1993

8/030757

Willie Lau - Ambler PA
Vishnu M. Shah - Hatfield PA

Rohm and Haas Company - Philadelphia PA

C08L 302, C08L 516, C08L 126, C09J 400

524 48

An improved method is provided for reversibly suppressing the viscosity of an aqueous solution containing a hydrophobically modified thickener by first complexing the hydrophobic moieties of the thickener with a methyl-. beta. -cyclodextrin and then decomplexing the methyl-. beta. -cyclodextrin from the thickener once the aqueous solution containing the thickener is added to the aqueous system which is intended to thicken.

2012016, Jun 28, 2012

Dec 20, 2011

13/331687

Harry R. HEULINGS - Maple Shade NJ, US
Willie LAU - Lower Gwynedd PA, US

C08L 17/00

524523

The present invention provides methods for making shelf-stable fluidizable particles that comprise mixing from 35 wt. % to 89.95 wt. %, based on total solids, of particles of one or more vulcanizate having a sieve particle size of from 10 to 800 μm, 10 to 65 wt. %, based on total solids, of one or more thermoplastic polymer in the form of an emulsion of a thermoplastic polymer in the presence of from 0.05 to 3 wt. %, based on total solids, of a passivating agent, to form a moist mixture followed by drying the moist mixture to form fluidizable particles such that the total solids content of the mixture remains 65 wt. % or more throughout processing. In addition, the invention provides plasticizer free storage stable fluidizable particles and 0colored fluidizable particles.

6063857, May 16, 2000

Jul 20, 1998

9/119500

Gary David Greenblatt - Rydal PA
Willie Lau - Ambler PA
Andrew Gordon Batzell - Philadelphia PA

Rohm and Haas Company - Philadelphia PA

C08L 516, C08L 3304, C08F22026

524561

Aqueous solutions of hydrophobically-modified alkali-soluble emulsion polymers which exhibit relatively low solution viscosity are disclosed. Such solutions are particularly useful for controlling the viscosity of aqueous systems to which the solutions are added.

2004011, Jun 10, 2004

Nov 19, 2003

10/716815

Willie Lau - Ambler PA, US
Paul Van Rheenen - Warminster PA, US

C08L051/08

525/063000, 525/065000, 525/066000, 525/067000, 525/069000, 525/070000

A method of forming a toughened article from a blend of a thermoplastic polymer and a comb copolymer is disclosed, along with the toughened article produced thereby. Compositions such as solids blends and melt blends, including a thermoplastic polymer and a comb copolymer, are also disclosed.

6040409, Mar 21, 2000

May 7, 1998

9/074062

Willie Lau - Ambler PA
Michael DeWayne Kelly - North Wales PA
Dennis Paul Lorah - Lansdale PA
David Ralph Heinley - Schwenksville PA

Rohm and Haas Company - Phila. PA

C08F 2010, C08F12010, C08F22010

526328

Polymer compositions which are useful in floor polish compositions as wax replacements are disclosed. The compositions provide improved repair properties in floor polishes and provide a non-slippery floor polish.