公开(公告)号：US11931697B2

公开(公告)日：2024-03-19

申请号：US17231358

申请日：2021-04-15

Applicant: Dow Global Technologies LLC

Inventor： Junqiang Liu ,  Douglas E. Beyer ,  Janet M. Goss ,  Chan Han ,  Edward M. Calverley

IPC: B01D69/02 ,  B01D53/22 ,  B01D67/00 ,  B01D71/02 ,  B01D71/30 ,  B01D71/80 ,  B01D69/08 ,  B01D71/40 ,  B01D71/42

CPC classification number: B01D69/02 ,  B01D53/228 ,  B01D67/0067 ,  B01D71/021 ,  B01D71/028 ,  B01D71/30 ,  B01D71/80 ,  B01D67/002 ,  B01D69/08 ,  B01D71/40 ,  B01D71/42 ,  B01D2256/10 ,  B01D2256/20 ,  B01D2256/22 ,  B01D2256/245 ,  B01D2257/108 ,  B01D2325/022 ,  B01D2325/04 ,  B01D2325/20

Abstract: A process for separating hydrogen from a gas mixture having hydrogen and a larger gas molecule is comprised of flowing the gas mixture through a carbonized polyvinylidene chloride (PVDC) copolymer membrane having a hydrogen permeance in combination with a hydrogen/methane selectivity, wherein the combination of hydrogen permeance and hydrogen/methane selectivity is (i) at least 30 GPU hydrogen permeance and at least 200 hydrogen/methane selectivity or (ii) at least 10 GPU hydrogen permeance and at least 700 hydrogen/methane selectivity. The carbonized PVDC copolymer may be made by heating and restraining a polyvinylidene chloride copolymer film or hollow fiber having a thickness of 1 micrometer to 250 micrometers to a pretreatment temperature of 100° C. to 180° C. to form a pretreated polyvinylidene chloride copolymer film and then heating and restraining the pretreated polyvinylidene chloride copolymer film to a maximum pyrolysis temperature from 350° C. to 750° C.

公开(公告)号：US20210229045A1

公开(公告)日：2021-07-29

申请号：US17231358

申请日：2021-04-15

Applicant: Dow Global Technologies LLC

Inventor： Junqiang Liu ,  Douglas E. Beyer ,  Janet M. Goss ,  Chan Han ,  Edward M. Calverley

IPC: B01D69/02 ,  B01D53/22 ,  B01D67/00 ,  B01D71/02 ,  B01D71/80 ,  B01D71/30

Abstract: A process for separating hydrogen from a gas mixture having hydrogen and a larger gas molecule is comprised of flowing the gas mixture through a carbonized polyvinylidene chloride (PVDC) copolymer membrane having a hydrogen permeance in combination with a hydrogen/methane selectivity, wherein the combination of hydrogen permeance and hydrogen/methane selectivity is (i) at least 30 GPU hydrogen permeance and at least 200 hydrogen/methane selectivity or (ii) at least 10 GPU hydrogen permeance and at least 700 hydrogen/methane selectivity. The carbonized PVDC copolymer may be made by heating and restraining a polyvinylidene chloride copolymer film or hollow fiber having a thickness of 1 micrometer to 250 micrometers to a pretreatment temperature of 100° C. to 180° C. to form a pretreated polyvinylidene chloride copolymer film and then heating and restraining the pretreated polyvinylidene chloride copolymer film to a maximum pyrolysis temperature from 350° C. to 750° C.

公开(公告)号：US20170368493A1

公开(公告)日：2017-12-28

申请号：US15535434

申请日：2016-01-06

Applicant: Dow Global Technologies LLC

Inventor： Junqiang Liu ,  Chan Han ,  H. Robert Goltz ,  Matthew L. Rodgers ,  Scott T. Matteucci ,  Brandon J. Kem

IPC: B01D53/08 ,  B01J20/20 ,  B01J20/28 ,  B01J20/26 ,  B01J20/34 ,  B01J20/30

CPC classification number: B01D53/08 ,  B01D53/02 ,  B01D2253/206 ,  B01D2253/308 ,  B01D2256/24 ,  B01D2256/245 ,  B01D2257/102 ,  B01D2259/40094 ,  B01J20/20 ,  B01J20/267 ,  B01J20/28061 ,  B01J20/28064 ,  B01J20/2808 ,  B01J20/28085 ,  B01J20/28092 ,  B01J20/3078 ,  B01J20/3416 ,  B01J20/3441 ,  B01J2220/4812 ,  Y02C20/20

Abstract: A method for separating N2 from a hydrocarbon gas mixture containing N2 comprising the steps of: i) providing a bed of adsorbent selective for N2; (ii) passing the hydrocarbon gas mixture through the bed of adsorbent to at least partially remove N2 from the gas mixture to produce: (a) N2-loaded adsorbent and (b) N2-depleted hydrocarbon gas mixture; iii) recovering the N2-depleted hydrocarbon gas mixture; iv) regenerating the N2-loaded adsorbent by at least partially removing N2 from the adsorbent; and v) sequentially repeating steps (ii) and (iii) using regenerated adsorbent from step (iv); wherein the adsorbent comprises a pyrolized sulfonated macroporous ion exchange resin.

公开(公告)号：US20170203276A1

公开(公告)日：2017-07-20

申请号：US15320334

申请日：2015-06-22

Applicant: Dow Global Technologies LLC

Inventor： Junqiang Liu ,  Douglas E. Beyer ,  Edward M. Calverley ,  Chan Han

IPC: B01J20/20 ,  B01J20/30 ,  B01D53/02 ,  B01J20/28

CPC classification number: B01J20/20 ,  B01D53/02 ,  B01D53/228 ,  B01D67/0067 ,  B01D69/02 ,  B01D71/021 ,  B01D71/34 ,  B01D2253/102 ,  B01D2253/116 ,  B01D2253/308 ,  B01D2253/311 ,  B01D2256/10 ,  B01D2256/24 ,  B01D2256/245 ,  B01D2257/102 ,  B01D2257/504 ,  B01D2257/7022 ,  B01D2257/7025 ,  B01D2325/023 ,  B01J20/28016 ,  B01J20/28023 ,  B01J20/28038 ,  B01J20/28069 ,  B01J20/2808 ,  B01J20/3007 ,  B01J20/3021 ,  B01J20/3028 ,  B01J20/3078 ,  B01J2220/4812 ,  C01B32/00 ,  C01B32/306 ,  C01B32/382 ,  C01P2006/14 ,  C01P2006/16 ,  Y02C10/08 ,  Y02C20/20 ,  Y02P20/152 ,  Y02P20/156

Abstract: Novel carbon molecular sieve (CMS) compositions comprising carbonized vinylidene chloride copolymer having micropores with an average micropore size ranging from 3.0 to 5.0. These materials offer capability in separations of gas mixtures including, for example, propane/propylene; nitrogen/methane; and ethane/ethylene. Such may be prepared by a process wherein vinylidene chloride copolymer beads, melt extruded film or fiber are pretreated to form a precursor that is finally carbonized at high temperature. Preselection or knowledge of precursor crystallinity and attained maximum pyrolysis temperature enables preselection or knowledge of a average micropore size, according to the equation ?=6.09+(0.0275×C)−(0.00233×T), wherein ? is the average micropore size in Angstroms, C is the crystallinity percentage and T is the attained maximum pyrolysis temperature in degrees Celsius, provided that crystallinity percentage ranges from 25 to 75 and temperature in degrees Celsius ranges from 800 to 1700. The beads, fibers or film may be ground, post-pyrolysis, and combined with a non-coating binder to form extruded pellets, or alternatively the fibers may be woven, either before or after pre-treatment, to form a woven fiber sheet which is thereafter pyrolyzed to form a woven fiber adsorbent.

公开(公告)号：US20150079367A1

公开(公告)日：2015-03-19

申请号：US14384813

申请日：2013-03-27

Applicant: DOW GLOBAL TECHNOLOGIES LLC

Inventor： Dongkyu Kim ,  Chan Han ,  Robert C. Cieslinski ,  Giuseppe Vairo ,  Luigi Bertucelli

IPC: B32B9/04 ,  B32B13/04

CPC classification number: B32B9/046 ,  B32B5/245 ,  B32B9/041 ,  B32B13/045 ,  B32B15/046 ,  B32B2250/02 ,  B32B2250/05 ,  B32B2250/40 ,  B32B2266/0278 ,  B32B2307/304 ,  B32B2307/306 ,  B32B2307/3065 ,  B32B2375/00 ,  B32B2419/00 ,  C04B28/006 ,  C04B2111/00534 ,  C04B2111/00612 ,  C04B2111/28 ,  C09K21/02 ,  Y10T428/24967 ,  Y10T428/24999

Abstract: Fire resistant composite structures. As an example, a fire resistant composite structure can have a foam material, a geopolymer thermal protection layer adhered to the foam material, and a facing adhered to the geopolymer layer. The geopolymer thermal protection layer can be formed by curing geopolymer precursors having a silicon to aluminum ratio in a range of 1.0:0.1 to 1.0:3.3.

Abstract translation: 耐火复合结构。 作为示例，耐火复合结构可以具有泡沫材料，粘附到泡沫材料上的地质聚合物热保护层和粘附到地质聚合物层的面。 地质聚合物热保护层可以通过将硅与铝的比例固化在1.0:0.1至1.0:3.3的范围内来形成。

公开(公告)号：US20150051312A1

公开(公告)日：2015-02-19

申请号：US14459364

申请日：2014-08-14

Applicant: Dow Global Technologies LLC

Inventor： Liang Chen ,  Chan Han ,  Dongkyu Kim ,  Michael J. Radler

IPC: C04B28/26

CPC classification number: C04B28/26 ,  C04B12/005 ,  C04B14/041 ,  C04B14/045 ,  C04B20/1033 ,  C04B24/24 ,  C04B24/281 ,  C04B26/00 ,  C04B28/006 ,  C04B40/00 ,  C04B40/065 ,  C04B2103/0057 ,  C04B2103/0058 ,  C04B2103/0065 ,  C08K3/34 ,  C08L33/06 ,  C08L63/00 ,  C08L63/10 ,  Y02P40/165 ,  C04B24/2641 ,  C04B14/106

Abstract: The present invention provides a two component geopolymer composition of wherein one component comprises a dry mix of an aluminosilicate, such as flyash, geopolymer precursor and one or more epoxy multilayer polymer particle redispersible polymer powder (RDP) having an epoxy resin core and an alkali soluble polymer shell, the epoxy resin having a calculated glass transition temperature (Tg) of from 7 to 45° C., and, wherein the other component, comprises one or more alkaline silicate geopolymer precursor, preferably in the form of an aqueous solution. The two-component compositions having from 1 to 20 wt. % of the RDP, based on solids, and provide greater formulation flexibility to make geopolymer compositions having improved tensile strength.

Abstract translation: 本发明提供了一种双组分地质聚合物组合物，其中一种组分包括铝硅酸盐如粉煤灰，地质聚合物前体和具有环氧树脂核心和碱溶性的一种或多种环氧多层聚合物颗粒可再分散聚合物粉末（RDP）的干混 聚合物壳，所述环氧树脂具有计算的玻璃化转变温度（Tg）为7至45℃，并且其中所述另一组分包含一种或多种碱性硅酸盐地质聚合物前体，优选为水溶液形式。 双组分组合物具有1至20wt。 ％的RDP，基于固体，并且提供更大的制剂柔性以使具有改善的拉伸强度的地质聚合物组合物。