Joseph P Webster

US Patent:

6538056, Mar 25, 2003

Filed:

Oct 10, 2000

Appl. No.:

09/685314

Inventors:

Joseph R. Webster - Charlotte NC

Assignee:

Clariant International Ltd. - Muttenz

International Classification:

C08K 330

US Classification:

524418, 524 96, 524100, 524101, 524108, 524131, 524146, 524153, 524199, 524232, 524248, 524291, 524336, 524343, 524349, 524359

Abstract:

What is disclosed are polyolefin compounds, e. g. , polyethylene and polypropylene, and articles therefrom made in by conventional solid, melt-phase compounding with oxidized, non-cationized, non-silylated sulfur black pigment, a phenolic antioxidant and a sulfur-containing secondary stabilizer, each in stabilizing amount, specified below, which provide a synergistic improvement in the long term heat aging of polyolefins. Preferably the sulfur black compound is treated by washing, and reduction in the soluble sodium salts. Also disclosed is melt-phase compounded polyolefin and molded articles made therefrom comprising incorporating of carbon black, oxidized, non-cationized, non-silylated sulfur black pigment, a phenolic antioxidant and sulfur-containing secondary stabilizer.

US Patent:

6586506, Jul 1, 2003

Filed:

Jul 5, 2001

Appl. No.:

09/899726

Inventors:

Joseph R. Webster - Charlotte NC
Stephen E. Russell - Grayslake IL

Assignee:

Clariant Finance (BVI) Limited - Tortola

International Classification:

C08K 534

US Classification:

524 99, 524104, 524306, 524308

Abstract:

Disclosed are improved solid, colored wax-based article having longer color shelf-life. The invention comprises a synthetic wax, a colorant, and an effective amount of a compound of the formula (1) having symbols defined in the text. The preferred embodiments of the articles contain (1) that exhibits a UV absorptivity greater than or equal to 70 liters per gram-cm. at a wavelength of less than or equal to 400 nm, as measured in either methanol, toluene or chloroform, using a conventional UV spectrophotometer. The uses for the articles include candles, crayons, fertilizer coatings, rosebush coatings, plant grafting, sealants, sun-cracking protection of rubber and plastic products, paper coating, packaging food products, electrical insulation, waterproofing and cleaning compounds, carbon paper, and precision investment casting.

US Patent:

6683124, Jan 27, 2004

Filed:

Sep 27, 2001

Appl. No.:

09/965689

Inventors:

Joseph R. Webster - Charlotte NC

Assignee:

Clariant Finance (BVI) Limited - Tortola

International Classification:

C08K 534

US Classification:

524 99, 524 90, 524102, 524103

Abstract:

Fluorescent yellow pigment compositions comprising Pigment Violet 19 or Pigment Yellow 192 and a polyamide, a process for the making thereof, and a process for making an article comprising said fluorescent yellow pigment composition.

US Patent:

6756429, Jun 29, 2004

Filed:

Jan 4, 2001

Appl. No.:

09/754931

Inventors:

Joseph R. Webster - Charlotte NC

Assignee:

Clariant Finance (BVI) Limited - Tortola

International Classification:

C08K 534

US Classification:

524 99, 523348

Abstract:

The invention provides a process for making a let-down of glass fiber reinforced composite comprising a polymer matrix and from 5 wt. % to about 60 wt. % of reinforcing fibers long fibers. The fibers are incorporated in the let-down as a concentrate of pultruded composite of substantially parallel fibers and thermoplastic polyamide where fiber length equals pellet length. The fibers in the let-down have improved dispersion and orientation in the final thermoplastic polymer matrix thereby providing substantially improved physical properties from the forming of the fiber reinforced pellet with a modified pellet polymer matrix. The long fibers are incorporated as a concentrate pellet in the final matrix polymer by mixing pellets with the final polymer compound in a heated extrusion mixing zone used to convey a composite melt into a shaping zone, whereby the mixing under heat and rotational shear disperses the long fiber-reinforced pellets into the let-down matrix polymer.

US Patent:

6774170, Aug 10, 2004

Filed:

Dec 7, 2001

Appl. No.:

10/015189

Inventors:

Joseph R. Webster - Charlotte NC

Assignee:

Clariant Finance (BVI) Limited - Tortola

International Classification:

C08K 330

US Classification:

524418, 524 96, 524100, 524101, 524108, 524131, 524146, 524153, 199232, 199248, 199291, 199336, 199343, 199349, 199359, 25240023, 252401, 252402, 252403

Abstract:

A heat stabilizing composition for polyolefins comprises an oxidized, non-cationized, non-silylated sulfur black pigment, a hindered phenolic antioxidant a sulfur-containing secondary stabilizer, each in stabilizing amount, and a hindered amine. The heat stabilizing composition yields polyolefin compounds and articles having improved long term heat aging stability. Preferably, the sulfur black pigment is treated by washing, to thereby reduce the concentration of soluble sodium salts.

US Patent:

7081213, Jul 25, 2006

Filed:

May 14, 2002

Appl. No.:

10/145366

Inventors:

Christoph Krōhnke - Breisach, DE
Joseph R. Webster - Charlotte NC, US
Ernst Gronmaier - Alischwil, CH
Lajos Avar - Riel Benken, CH

Assignee:

Clariant Finance (BVI) Limited - Tortola

International Classification:

C09K 15/22
C09K 15/06
C09K 15/08
C08K 5/10
C08K 5/20

US Classification:

252403, 252401, 252404, 25218229, 524306

Abstract:

A stabilizer mixture for one or more compounds of the general formula (1)The present invention is useful in the protection of various polymeric substrates against the damaging influence of light exposure by the long term storage of polymers. This effect can be observed especially in so-called engineering plastics (such as, for example, PC, PET, PBT, ABS, TPU).

US Patent:

7332535, Feb 19, 2008

Filed:

Jun 8, 2006

Appl. No.:

11/449049

Inventors:

Christoph Kröhnke - Breisach, DE
Joseph R. Webster - Charlotte NC, US
Ernst Gronmaier - Allschwil, CH
Lajos Avar - Biel Benken, CH

Assignee:

Clariant Finance (BVI) Limited - Tortola

International Classification:

C08K 5/10
C08K 5/20
C09K 15/08
C09K 15/06
C09K 15/22

US Classification:

524311, 524306, 252401, 252403, 252404, 25218229

Abstract:

A stabilizer mixture for one or more compounds of the general formula (1)The present invention is useful in the protection of various polymeric substrates against the damaging influence of light exposure by the long term storage of polymers. This effect can be observed especially in so-called engineering plastics (such as, for example, PC, PET, PBT, ABS, TPU).

US Patent:

20100189595, Jul 29, 2010

Filed:

Jan 29, 2009

Appl. No.:

12/361873

Inventors:

Joseph R. Webster - Charlotte NC, US

Assignee:

Lehigh Tecghnologies Inc. - Naples FL

International Classification:

B01J 29/04
A61L 9/014

US Classification:

422 4, 502 62

Abstract:

A method is taught for capturing organoleptic odor. Where a functional additive has odors from a plurality of organolepic sources, and is blended with an odor control agent and a resin to produce a blend, where the blend exhibits at least a 5% reduction in odor based on a standardized odor test SAE-J1351. The odor control agent is selected from the group but not limited to: nepheline syenite, silica gel, hydrogels, hard and soft clays, bentonite, clinoptilolite, hectorite, cationic exchanged clinoptilolites, cerium, cesium, chabazite, faujasite, gmelinite, brewsterite, calcium silicate, hydrotalcites, zinc or magnesium aluminum hydroxy carbonates, zinc oxide, zinc hydroxide, zinc carbonate, calcium oxide, calcium hydroxide, calcium carbonate, potassium meta phosphate, silver oxide, magnesium hydroxide, magnesium oxide, copper oxide, ferric and ferrous oxides, sorbitol, glucitol, mannitol, glucose, dextrose, dextrin, allophanes, silica, sodalite, silicon oxide, aluminum oxide, natural zeolites, manganese dioxide, nano zinc oxide and nano titanium and combination thereof.