Robert H Coyle

US Patent:

6624212, Sep 23, 2003

Filed:

Dec 20, 2000

Appl. No.:

09/740140

Inventors:

Jane Elizabeth Weier - Hopewell NJ
Morris Christopher Wills - Philadelphia PA
Robert William Coyle - Warrington PA

Assignee:

Rohm and Haas Company - Philadelphia PA

International Classification:

C08L 8300

US Classification:

523201, 525 83, 525232, 525902

Abstract:

The plastics additives powder compositions of the present invention are provided as powder particles having impact modifier particles and processing aid particles which are coagulated and dried. When blended in thermoplastic resins, such as PVC, the subject plastics additives powders both increase the impact strength and improve process efficiency and melt strength. The impact and processing properties achieved by the present invention are more efficient than using separate impact modifier and processing aid powders. The method of preparing the powder compositions of the present invention also enable impact modifier particles having rubber weight fractions greater than 88% to be isolated as free-flowing powders.

US Patent:

7217747, May 15, 2007

Filed:

Jul 24, 2003

Appl. No.:

10/626068

Inventors:

Jane Elizabeth Weier - Hopewell NJ, US
Morris Christopher Wills - Philadelphia PA, US
Robert William Coyle - Warrington PA, US

Assignee:

Rohm and Haas Company - Philadelphia PA

International Classification:

C08L 83/00

US Classification:

523201, 525 83, 525232, 525902, 524523, 524555, 524560, 524562

Abstract:

The plastics additives powder compositions of the present invention are provided as powder particles having impact modifier particles and processing aid particles which are coagulated and dried. When blended in thermoplastic resins, such as PVC, the subject plastics additives powders both increase the impact strength and improve process efficiency and melt strength. The impact and processing properties achieved by the present invention are more efficient than using separate impact modifier and processing aid powders. The method of preparing the powder compositions of the present invention also enable impact modifier particles having rubber weight fractions greater than 88% to be isolated as free-flowing powders.

US Patent:

7285585, Oct 23, 2007

Filed:

Aug 8, 2003

Appl. No.:

10/637449

Inventors:

Robert William Coyle - Warrington PA, US
Morris Christopher Wills - Philadelphia PA, US

Assignee:

Rohm and Haas Company - Philadelphia PA

International Classification:

C08J 3/02
C08L 27/12
C08L 67/00
C08K 3/20
C09D 5/02

US Classification:

523335, 524501, 524543, 524544, 524545, 524546, 524555, 524556, 524600, 524601, 524602, 524612

Abstract:

This invention provides processes for isolating particles from an emulsion including the steps of: (a) forming an emulsion having a solid component having a population of particles, a liquid component, and a first ionic forming compound, wherein the presence of the first ionic forming compound in the emulsion does not result in the coagulation of the population of particles contained therein; (b) obtaining a composition having a second ionic forming compound which, by itself, is not sufficient to result in the coagulation of the population of particles contained in the emulsion; and (c) mixing the emulsion and the composition having the second ionic compound such that the first ionic forming compound reacts with the second ionic forming compound to form a coagulating agent which results in the coagulation of the population of particles. The invention also provides processes for preparing a polymer matrix system using the aforementioned process for isolating particles from an emulsion. In these processes, the plastic matrix system is prepared by adding, to a plastic resin, the emulsion and the composition having the second ionic forming compound, such that the first ionic forming compound reacts with the second ionic forming compound to form a coagulating agent which results in the coagulation of the population of particles.

US Patent:

20050043453, Feb 24, 2005

Filed:

Jul 22, 2004

Appl. No.:

10/896468

Inventors:

Ching-Jen Chang - Ambler PA, US
Robert Coyle - Warrington PA, US
Hailan Guo - Warrington PA, US
Charles Jones - Yardley PA, US
Stephane Jean Ugazio - Cabris, FR

International Classification:

C08K005/17

US Classification:

524236000

Abstract:

The present invention relates to a process for preparing dry polymer granules, particles and powders having increased minimum ignition energy, lowered to unchanged maximum explosion pressure, lowered explosion strength (Kst) coupled with reduced dusting levels by coagulating one or more emulsion polymers using one or more cationic surfactants including one or more other coagulating agents, filtering the coagulated slurry and drying the coagulated slurry.