Kailash C Dangayach

US Patent:

6359037, Mar 19, 2002

Filed:

Aug 10, 2000

Appl. No.:

09/635909

Inventors:

Charles J. Stark - late of Houston TX
Gayle Edward Back - Houston TX 77083
Jimmy D. Elmore - Houston TX 77079
Kalyan Ghosh - Richmond TX 77469
Pen-Chung Wang - Houston TX 77079
Kailash Dangayach - Houston TX 77097

International Classification:

C08G 5914

US Classification:

523404, 523414, 525423

Abstract:

An aqueous system comprises at least one epoxy resin and a reaction product with an amine equivalent weight of at least 50 prepared by the reaction of an (A) epoxy-functional amidoamine derived from at least one epoxy resin and an amidoamine obtained via the reaction of an acid-terminated polyalkylene glycol and a diamine in an active hydrogen:epoxy groups ratio of from 1:15 to 1:350, with (B) at least one polyamine in an active amine hydrogen:epoxy groups equivalent ratio of from 2:1 to 30:1, and, optionally (C) a monoepoxide in a remaining active amine hydrogen:epoxy groups equivalent ratio of from 5:1 to 20:1.

US Patent:

6509438, Jan 21, 2003

Filed:

Apr 23, 2001

Appl. No.:

09/840411

Inventors:

Donald Ross Kelsey - Fulshear TX
Betty Marrou Scardino - Katy TX
Kailash Dangayach - Houston TX
Houston Slade Brown - Houston TX
Hans Reitz - Rosbach, DE
Eckhard Seidel - Frankfurt am Main, DE
Fritz Wilhelm - Karben, DE

Assignee:

Shell Oil Company - Houston TX

International Classification:

C08G 6378

US Classification:

528279, 528285, 528286, 528302, 5283086

Abstract:

According to the invention, a polytrimethylene terephthalate is provided having 0. 6 to less than 2 mole percent dipropylene glycol. Such compositions have a reduced tendency to generate acrolein when heated in air. These PTT polymer compositions exhibit improved and enhanced dyeability as compared to conventional PTT made by the DMT process and the TPA polycondensation/solid state polymerization processes.

US Patent:

6702864, Mar 9, 2004

Filed:

Sep 21, 2001

Appl. No.:

09/957981

Inventors:

Charles Chiu-Hsiung Hwo - Sugar Land TX
Hoe Hin Chuah - Houston TX
Houston Slade Brown - Houston TX
Kailash Dangayach - Houston TX
Paul Karol Casey - Katy TX

Assignee:

Shell Oil Company - Houston TX

International Classification:

D06P 352

US Classification:

8495, 8497, 8922, 8931

Abstract:

This invention relates to a process of making high stretch elastic knitted fabrics from (PTT) which comprises: (a) making a drawn textured yarn with an elongation to break of 30 to 60 percent by: (i) spinning a polytrimethylene terephthalate polymer into a partially oriented yarn, and (ii) draw texturing the yarn in a false-twisting texturing machine at a draw ratio of 1. 05 to 2. 0, and a yarn temperature of 50 to 200Â C. using a either a contact heater or a non-contact heater, and (b) knitting the yarn into a fabric composed of intermeshing loops of the yarn wherein the stitch length is from 22 cm/100 stitches to 26 cm/100 stitches, and (c) scouring the knitted fabric, and (d) drying the fabric on a belt, and (e) dyeing the knitted fabric at atmospheric pressure by dispersing a dye and the fabric in water and increasing the temperature, and (f) finishing the dyed knitted fabric according to the specific procedure and (g) drying the fabric on a belt.

US Patent:

6740270, May 25, 2004

Filed:

Oct 3, 2001

Appl. No.:

09/970117

Inventors:

Charles Chiu-Hsiung Hwo - Sugar Land TX
Hoe Hin Chuah - Houston TX
Houston Slade Brown - Houston TX
Kailash Dangayach - Houston TX
Paul Karol Casey - Katy TX

Assignee:

Shell Oil Company - Houston TX

International Classification:

D01D 5084

US Classification:

264103, 2642107, 2642108, 26421112, 26421117

Abstract:

This invention is a spin draw process for making partially oriented yarn from polytrimethylene terephthalate (PTT) which comprises the steps of: (a) extruding and spinning PTT in forming a monofilament or multifilament yarn therefrom, (b) heating the yarn by contacting it with a first pair of godets moving at a speed in and at a temperature set to give a yarn temperature above the glass transition temperature and less than the cold crystallization temperature of PTT, (c) drawing the yarn between the first godet pair and a second pair of godets moving at a speed and a temperature of from 45 to 120Â C. and having a draw ratio of 0. 7 to 3. 0, and (d) winding the yarns at the speed of 1 to 15% less than that of the second godet pair at a yarn temperature less than the glass transition temperature of PTT yarn.

US Patent:

7022273, Apr 4, 2006

Filed:

Feb 19, 2003

Appl. No.:

10/369023

Inventors:

Kailash Dangayach - Houston TX, US
Kathleen Suzanne Kiibler - Katy TX, US
Michele Buscemi - Grand Leez, BE
Dieter Wiemer - Wermelskirchen, DE
Hansjorg Meise - Köln, DE
Hoe Hin Chuah - Houston TX, US
Adriano Birosel Pangelinan - Houston TX, US
Houston Slade Brown - Houston TX, US

Assignee:

Shell Oil Company - Houston TX

International Classification:

B29D 28/00
B29C 49/08
B29C 47/88

US Classification:

264103, 2642107, 2642108, 26421112, 26421117

Abstract:

A process for the production and for the winding of one polyester yarn, preferably multi-filament yarn, which comprises at least about 85 weight %, in relation to the total weight of the polyester yarn, of polytrimethylene terephthalate (PTT) wherein said process is characterized in that filaments of said polyester yarn is heat-treated, before it is wound on a bobbin, at a temperature in the range of about 70 C. to about 180 C. The method of accomplishing this is by heating the godets that are used in the spinning part of the process, preferably the last pair of godets, to relax the yarns so that the yarn package will not shrink significantly during storage and/or transportation. It is thus possible to obtain at least one PTT yarn package with long-term stability during storage and which is insensitive against elevated temperatures during storage and transport.

US Patent:

20030111171, Jun 19, 2003

Filed:

Sep 9, 2002

Appl. No.:

10/221067

Inventors:

Paul Casey - Katy TX, US
Kailash Dangayach - Houston TX, US
Linda Oliveri - Katy TX, US
Donald Shiffler - Kinston NC, US

International Classification:

B31D001/00
B32B017/00

US Classification:

156/296000, 156/167000, 156/062200

Abstract:

A process for making textile staple fibre from polytrimethylene terephthalate (PTT) which comprises: (a) melt extruding PTT polymer at 245 to 253 C., (b) spinning the extruded PTT into yarn using at least one spinneret, (c) moving the spun yarn to a first takeup roll wherein the distance from the spinneret to the roll is from 16 to 20 feet, (d) cooling the spun yarn to less than 31 C. before it reaches the roll, (e) prior to the draw process, preconditioning the yarn under tension at a temperature of at least 60 C., (f) drawing the yarn at a temperature of at least 60 C., (g) allowing the drawn yarn to relax at a temperature of up to 190 C., and (h) crimping the drawn yarn at a temperature of 70 to 120 C., and decreasing the drawn yarn feed denier into the crimper by 10 to 60 percent by denier.

US Patent:

20080132620, Jun 5, 2008

Filed:

Nov 13, 2007

Appl. No.:

11/939426

Inventors:

Hoe Hin CHUAH - Houston TX, US
Kailash Dangayach - Houston TX, US
Venkataratnam Ramachandran - Dalton GA, US

International Classification:

C08K 5/51
C08K 5/53

US Classification:

524133

Abstract:

The present invention provides a polymer composition containing a flame retardant. In particular, the invention provides a polymer composition containing poly(trimethylene terephthalate) and a flame retardant having a flame retardant component that melts at a temperature of equal to or below 280 C. The present invention also provides a process for producing such a composition, and materials incorporating such polymer compositions.

US Patent:

20090198011, Aug 6, 2009

Filed:

Dec 16, 2008

Appl. No.:

12/336346

Inventors:

Kailash DANGAYACH - Houston TX, US
Hoe Hin Chuah - Houston TX, US

International Classification:

C08L 61/00

US Classification:

524502, 525153

Abstract:

A flame retardant polymer composition and a process for making the composition are provided. The flame retardant polymer composition is a poly(trimethylene terephthalate) co-polymer containing a trimethylene terephthalate monomer and a phosphorous containing flame retardant monomer. The flame retardant polymer composition is produced by a process in which the trimethylene terephthalate monomer or its precursors and the phosphorous containing flame retardant monomer or its precursors are combined to form the poly(trimethylene terephthalate) co-polymer in one or more pre-polymerization and polymerization steps.

Address:

755 Windbreak Trl, Houston, TX 77079

Phone:

2814977310

VIN:

2T2ZK1BA6CC074235

Make:

LEXUS

Model:

RX 350

Year:

2012