Krassimir I Doynov from 933 Ashland St, Houston, TX 77008, age 60, Phone: 713-426-2401

Crosslinked Elastomer-Polymer Blends
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US Patent:

20210340361, Nov 4, 2021
Filed:

Sep 10, 2019
Appl. No.:

17/278575
Inventors:

- Baytown TX, US
Antonios K. Doufas - Houston TX, US
Krassimir I. Doynov - Houston TX, US
Anthony J. Dias - Houston TX, US
International Classification:

C08L 23/06
B32B 1/08
B32B 15/18
B32B 25/14
B32B 15/06
F16L 11/10
Abstract:

Embodiments of the present disclosure generally relate to crosslinked TPE or TPV compositions, flexible pipes containing crosslinked TPE or TPV compositions, and methods for forming crosslinked elastomer polymer compositions and flexible pipes. In an embodiment, a flexible pipe includes a plurality of layers, where at least one layer includes a composition including: at least one polar elastomer, and a polymer having a crystallinity of about 20% or greater. In an embodiment, a pipe includes an inner sheath, an outer sheath, a first armor layer, and a second armor layer, where at least one of the inner sheath and the outer sheath comprises a crosslinked TPE or TPV composition that is the reaction product of an elastomer having a polarity of about 90 or less, a polymer having a crystallinity of about 20% or greater, and a crosslinking agent.

Thermoplastic Vulcanizate Conduits For Transporting Hydrocarbon Fluids
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US Patent:

20200347209, Nov 5, 2020
Filed:

Sep 14, 2018
Appl. No.:

16/955439
Inventors:

- Baytown TX, US
Declan Noel Whelan - Rugby, Warwickshire, GB
Antonios K. Doufas - Houston TX, US
Deborah Jean Davis - League City TX, US
Robert Leslie Chidlow - SHROPSHIRE, GB, GB
Wanli Wang - Katy TX, US
Krishnan Anantha Narayana Iyer - Pearland TX, US
Krassimir Iordanov Doynov - Houston TX, US
Xin Chen - Shanghai, CN
Yuan-Ju Chen - Houston TX, US
International Classification:

C08L 15/02
C08L 23/12
F16L 11/08
F16L 59/153
Abstract:

A conduit, particularly flexible conduit comprises an inner tubular housing, at least one reinforcing layer at least partially disposed around the inner housing, an outer protective sheath at least partially disposed around the at least one reinforcing layer, and optionally a thermally insulating layer disposed between the at least one reinforcing layer and the outer protective sheath. At least one of the outer protective sheath and the thermally insulating layer comprises a thermoplastic vulcanizate composition.

Flexible Pipe With Corrosion Resistant Layer
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US Patent:

20160076675, Mar 17, 2016
Filed:

Aug 26, 2015
Appl. No.:

14/836293
Inventors:

Wan C. KAN - Houston TX, US
Krassimir I. Doynov - Houston TX, US
Venkat R. Krishnan - Houston TX, US
International Classification:

F16L 11/14
B29C 65/00
Abstract:

The present techniques are directed to a flexible pipe. An inner carcass layer forms the innermost layer of the flexible pipe. An inner sheath layer and an outer sheath layer are disposed externally of the inner carcass layer. A layer of corrosion resistant alloy is disposed at any location between the inner carcass layer and the outer sheath layer. At least one armor layer is disposed internally of the outer sheath layer.

Krassimir I Doynov