Christopher L Sprague

US Patent:

8148475, Apr 3, 2012

Filed:

Jun 29, 2004

Appl. No.:

10/880001

Inventors:

Ravi R. Vedula - North Ridgeville OH, US
Yona Eckstein - Kent OH, US
Yinbing Xia - Beijing, CN
Christopher A. Sprague - Cuyahoga Falls OH, US
Julius Farkas - North Ridgeville OH, US

Assignee:

Lubrizol Advanced Materials, Inc. - Cleveland OH

International Classification:

C08G 18/10
C08G 18/48
C08J 3/24

US Classification:

525458, 36421112, 36421122, 525457

Abstract:

Thermoplastic polyether polyurethane polymers are disclosed which are mixed with a crosslinking agent to achieve long run times in a melt spinning process to make elastic fibers. The crosslinking agent is preferably a polyether or polyester polyol reacted with a diisocyanate. A melt spinning process is also disclosed using a polyether polyurethane with a crosslinking agent. Long melt spinning run times can be achieved without experiencing excessive pressure buildup in the spinneret and fiber breakage. The thermoplastic polyether polyurethane polymers are made by reacting: (1) a blend of two or more hydroxyl terminated intermediates wherein one intermediate is a polyether intermediate and has a higher number average molecular weight than the other said polyether intermediates, and wherein the weighted average number average molecular weight of said blend is greater than 1200 Daltons; (2) at least one polyisocyanate; and (3) at least one hydroxyl terminated chain extender. Melt spun fibers disclosed have excellent dye pickup, bleach resistance, and color fastness. The melt spun fibers can be dyed with polyester fibers and retain excellent physical properties.

US Patent:

20100325782, Dec 30, 2010

Filed:

Jun 24, 2010

Appl. No.:

12/822441

Inventors:

Ravi R. Vedula - North Ridgeville OH, US
Daniel M. Fischer - Brentwood TN, US
Christopher A. Sprague - Cuyahoga Falls OH, US

Assignee:

LUBRIZOL ADVANCED MATERIALS, INC. - Cleveland OH

International Classification:

A41B 9/00
D02G 3/02
B29C 47/00
A41C 3/00

US Classification:

2400, 428401, 428221, 2641761, 450 93

Abstract:

Elastic fibers are disclosed which have a relatively flat modulus curve at between 100% and 200% elongation. The fibers can be made into garments having a very comfortable feel. The preferred elastic fibers are made from thermoplastic polyurethane polymers and are made by a unique melt spinning process where the fiber is wound into bobbins at a speed just slightly higher than the melt velocity of the polymer exiting the spinneret.

US Patent:

20110305902, Dec 15, 2011

Filed:

Jun 15, 2011

Appl. No.:

13/160635

Inventors:

Ravi R. Vedula - North Ridgeville OH, US
Daniel M. Fischer - Brentwood TN, US
Christopher A. Sprague - Cuyahoga Falls OH, US

Assignee:

LUBRIZOL ADVANCED MATERIALS, INC. - Cleveland OH

International Classification:

D02G 3/00
B29C 47/00

US Classification:

428364, 26421112

Abstract:

The present invention relates to high strength fabrics made thereof from thin gauge constant compression elastic fibers. Elastic fibers are disclosed which have a relatively flat modulus curve, for example between 100% and 200% elongation. Garments made with the constant compression elastic fibers have a more comfortable feel to the wearer. The garments are also resistant to puncture due to the high strength fabric made with the elastic fibers.

US Patent:

20130273285, Oct 17, 2013

Filed:

Dec 19, 2011

Appl. No.:

13/995307

Inventors:

Ravi R. Vedula - North Ridgeville OH, US
Daniel M. Fischer - Brentwood TN, US
Christopher A. Sprague - Cuyahoga Falls OH, US

Assignee:

Lubrizol Advanced Materials, Inc. - Cleveland OH

International Classification:

C08G 18/42

US Classification:

428 369, 428221, 264103, 52544001

Abstract:

The present invention relates to elastomeric resins, fibers made from said resins, fabrics made with said fibers, and applications and uses for the resins, fibers and fabrics. The elastomer resins of the invention provide high strength fibers and well balanced fabrics with good physical properties and chemical resistance, making them attractive for use in various applications that use elastic fibers and fabrics.

US Patent:

20170029982, Feb 2, 2017

Filed:

Sep 2, 2016

Appl. No.:

15/255258

Inventors:

- Cleveland OH, US
Christopher A. Sprague - Cuyahoga Falls OH, US
Daniel M. Fischer - Brentwood TN, US
Ravi R. Vedula - North Ridgeville OH, US

International Classification:

D01F 6/70
D01D 5/16

Abstract:

Elastic fibers are disclosed which have a relatively flat modulus curve at between 100% and 200% elongation. The fibers can be made into garments having a very comfortable feel. The preferred elastic fibers are made from thermoplastic polyurethane polymers and are made by a unique melt spinning process where the fiber is wound into bobbins at a speed just slightly higher than the melt velocity of the polymer exiting the spinneret.

US Patent:

20160053408, Feb 25, 2016

Filed:

Aug 18, 2015

Appl. No.:

14/747548

Inventors:

- Cleveland OH, US
James E. Bryson Jr. - Cuyahoga Falls OH, US
Christopher A. Sprague - Cuyahoga Falls OH, US
Daniel M. Fischer - Brentwood TN, US

International Classification:

D01F 6/70
C08G 18/76
C08G 18/32
D01F 6/62
D01D 5/08

Abstract:

The present invention relates to high strength fabrics made thereof from thin gauge constant compression elastic fibers. Elastic fibers are disclosed which have a relatively flat modulus curve, for example between 100% and 200% elongation. Garments made with the constant compression elastic fibers have a more comfortable feel to the wearer. The garments are also resistant to puncture due to the high strength fabric made with the elastic fibers.