公开(公告)号：US20170247271A1

公开(公告)日：2017-08-31

申请号：US15328549

申请日：2015-07-31

Applicant: Dow Global Technologies LLC

Inventor： Paul A. Gillis ,  Jason S. Moore ,  Billy G. Smith ,  Michael D. Cloeter ,  Michael K. Poindexter ,  Carol E. Mohler ,  Wu Chen ,  Cole A. Witham ,  Justice Alaboson ,  Shankhadeep Das ,  Harpreet Singh

IPC: C02F1/56 ,  C02F11/16 ,  C10G1/04 ,  B01F7/22 ,  B01F7/00 ,  C02F11/14 ,  C02F11/12

CPC classification number: C02F1/56 ,  B01F7/00141 ,  B01F7/00258 ,  B01F7/003 ,  B01F7/00341 ,  B01F7/0035 ,  B01F7/00633 ,  B01F7/0075 ,  B01F7/00908 ,  B01F7/22 ,  B01F2215/0052 ,  C02F11/127 ,  C02F11/14 ,  C02F11/16 ,  C02F2103/10 ,  C02F2103/365 ,  C02F2301/022 ,  C10G1/045 ,  C10G1/047

Abstract: The present invention relates to a method for flocculating and dewatering oil sands fine tailings. Said method comprises mixing the aqueous mineral suspension with a poly(ethylene oxide) (co)polymer to form a dough-like material. The material is then dynamically mixed in an in-line reactor to break down the dough-like material to form microflocs having an average size of 1 to 500 microns, and to release water. The internal diameter of the in-line reactor is at most five times the internal diameter of the inlet pipe of the reactor. The suspension of microflocs has a viscosity of at most 1000 cP and a yield stress of at most 300 Pa.

公开(公告)号：US20150025217A1

公开(公告)日：2015-01-22

申请号：US14379576

申请日：2013-03-13

Applicant: DOW GLOBAL TECHNOLOGIES LLC

Inventor： William H. Heath ,  Harpreet Singh ,  Amarnath Singh ,  Jorge Jimenez ,  Qiuyun Xu

IPC: C08G64/30

CPC classification number: C08G64/305 ,  C08G64/0208

Abstract: Embodiments of the invention provide for methods of producing a polycarbonate polyol. The method includes charging a vessel with butanediol, charging the vessel with a polymerization catalyst, and adding to the vessel dimethyl carbonate at a rate of at least 2.0 g of DMC per minute per kg of BDO to produce polycarbonate polyol at a polycarbonate polyol yield of at least 80% of a theoretical yield.

Abstract translation: 本发明的实施方案提供了生产聚碳酸酯多元醇的方法。 该方法包括用丁二醇装入容器，用聚合催化剂装入容器，并以每千克BDO每分钟至少2.0克DMC的速率向容器中加入容器中，以聚碳酸酯多元醇的产率制备聚碳酸酯多元醇 至少80％的理论产量。

公开(公告)号：US20140352904A1

公开(公告)日：2014-12-04

申请号：US14374056

申请日：2013-02-27

Applicant: Dow Global Technologies LLC

Inventor： Harpreet Singh ,  William H. Heath ,  Amarnath Singh ,  Asfar N. Chowdhury ,  Marcin Grigoriew ,  Kaoru Aou

IPC: C08G18/44 ,  C08G18/48 ,  D21F1/00 ,  C08G18/76

CPC classification number: C08G18/44 ,  C08G18/10 ,  C08G18/12 ,  C08G18/324 ,  C08G18/4018 ,  C08G18/4854 ,  C08G18/7621 ,  C08G18/7671 ,  D21F1/0027 ,  D21F3/0227 ,  C08G18/6685 ,  C08G18/6651

Abstract: Embodiments of the invention provide for paper mill equipment that can better withstand the conditions of a paper Mill. Embodiments encompass paper mill equipment that incorporate a polyurethane layer having a hysteresis value of less than 70% and a permanent set of less than 30%. The polyurethane layer includes a polyurethane produced by curing a mixed composition. The mixed composition includes at least a urethane prepolymer (A) and at least a curing agent (B) having an active hydrogen group (H). The urethane prepolymer (A) has at least one terminal isocyanate group and is obtained by reacting at least a polyisocyanate compound (a) with at least a polycarbonate diol compound (b) having a number average molecular weight of at least 1500 g/mol. The curing agent (B) includes at least an amine compound. The elastomer compositions are also useful to coat the acid pickling roller in the steel industry.

Abstract translation: 本发明的实施例提供了能够更好地承受造纸厂的条件的造纸设备。 实施例包括结合具有小于70％的滞后值和小于30％的永久变形的聚氨酯层的造纸设备。 聚氨酯层包括通过固化混合组合物制备的聚氨酯。 混合组合物至少包含氨基甲酸酯预聚物（A）和至少具有活性氢基（H）的固化剂（B）。 氨基甲酸酯预聚物（A）具有至少一个末端异氰酸酯基团，并且通过使至少多异氰酸酯化合物（a）与数均分子量为至少1500g / mol的至少一种聚碳酸酯二醇化合物（b）反应而获得。 固化剂（B）至少包含胺化合物。 弹性体组合物也可用于涂覆钢铁工业中的酸洗辊。