公开(公告)号：US20240052085A1

公开(公告)日：2024-02-15

申请号：US18266036

申请日：2021-12-09

Applicant: Covestro Deutschland AG

Inventor： Christoph Malbertz ,  Stefan Hirschfeld ,  Dieter Mager ,  Oswald Wilmes

IPC: C08G18/02 ,  C08G18/32 ,  C08G18/18 ,  C08G18/78 ,  C09D175/04

CPC classification number: C08G18/022 ,  C08G18/3206 ,  C08G18/1875 ,  C08G18/7837 ,  C08G18/7843 ,  C09D175/04 ,  C08G2150/00

Abstract: The invention relates to a method for producing isocyanate-terminated, urethane group-containing prepolymers, comprising reacting a reaction mixture that contains a stoichiometric excess of at least one aliphatic and/or cycloaliphatic diisocyanate and a polyol composition having an OH number >400, characterized in that the reaction mixture is mixed with a specific power input of 0.5 kW/m3 to 40 kW/m3, relative to the total volume of the reaction mixture.

公开(公告)号：US20240026196A1

公开(公告)日：2024-01-25

申请号：US18266044

申请日：2021-12-02

Applicant: Covestro Deutschland AG

Inventor： Ann-Christin Bijlard-Jung ,  Dirk Achten ,  Fabian Schuster ,  Joerg Tillack

IPC: C09J175/06 ,  C09J175/02 ,  C09J11/06 ,  C09J11/04

CPC classification number: C09J175/06 ,  C09J175/02 ,  C09J11/06 ,  C09J11/04 ,  C09J2475/00

Abstract: An adhesive composition includes a polyurethane polymer, a solvent and a co-solvent. The polyurethane polymer is an internally and/or externally hydrophilized thermoplastic polyurethane having a mass average molecular weight Mw, as determined by gel permeation chromatography against polystyrene standards using N,N-dimethyl acetamide as the eluent, of ≥50000 g/mol, the solvent is a polar-aprotic solvent such as MEK and the co-solvent is water. The polyurethane polymer, the solvent and the co-solvent are present in such amounts that they form a dispersion. The polyurethane polymer content is ≥10 weight-%, based on the total weight of the composition and the weight ratio of solvent to co-solvent is in a range of ≥1:1 to ≤4:1.

公开(公告)号：US20240026074A1

公开(公告)日：2024-01-25

申请号：US18039031

申请日：2021-11-25

Applicant: Covestro Deutschland AG

Inventor： Rolf Wehrmann ,  Anke Boumans

IPC: C08G64/06 ,  C08K3/22 ,  C08K3/40 ,  C08K9/02

CPC classification number: C08G64/06 ,  C08K3/22 ,  C08K3/40 ,  C08K9/02 ,  C08K2003/2241 ,  C08K2201/016

Abstract: Described are reflective, titanium dioxide-containing polycarbonate compositions to which 0.001 wt. % to 0.25 wt. % glass flakes including a titanium dioxide coating are added to improve reflectance values, said glass flakes usually being used in larger quantities as effect pigments. Said compositions make it possible to produce brilliant white molded parts.

公开(公告)号：US20240010783A1

公开(公告)日：2024-01-11

申请号：US18044632

申请日：2021-09-29

Applicant: Covestro Deutschland AG

Inventor： Hao Liu ,  Yaguang Ma ,  Na Xu ,  Tian Xia ,  Karsten Danielmeier ,  Raul Pires ,  Hans-Josef Laas

IPC: C08G18/70 ,  C09D175/04

CPC classification number: C08G18/706 ,  C09D175/04 ,  C08G2150/00 ,  C08G2170/00 ,  C08G2190/00

Abstract: The invention relates to a water-dispersible modified polyisocyanate and use thereof, especially as a crosslinking component in water-soluble or water-dispersible coating compositions. The water-dispersible modified polyisocyanate can be obtained by the reaction of a system comprising a water-dispersible polyisocyanate and an isocyanate-reactive component; wherein the viscosity of the water-dispersible modified polyisocyanate is 3000 mPa·s-11000 mPa·s, which is measured with a MV-DIN rotor according to DIN EN ISO 3219:1994-10 at 23° C. and a shear rate of 10 s−1. The modified polyisocyanate according to the present invention has good manual stirring behavior and good dispersibility, and the coating formed by the coating composition containing the modified polyisocyanate has high gloss and good transparency.

公开(公告)号：US20240009591A1

公开(公告)日：2024-01-11

申请号：US18253606

申请日：2021-11-22

Applicant: Covestro Deutschland AG

Inventor： Ulrich Wolf

IPC: B01D3/14 ,  B01D1/06 ,  B01D3/32 ,  C07C263/20 ,  C07C209/86

CPC classification number: B01D3/148 ,  B01D1/065 ,  B01D3/322 ,  C07C263/20 ,  C07C209/86

Abstract: The invention relates to a distillation unit (100 000) which is designed for a continuous distillation process and to a method for a continuous operation for separating a liquid substance mixture (10) into two to six liquid product flows (201, 202, . . . ) with different compositions and into a gaseous product flow (300). For this purpose, an evaporation unit (10 000) is provided consisting of multiple evaporation devices (10 000-1, 10 000-2, . . . ), wherein each evaporation device has a circuit device (1 200-1, 1 200-2, . . . ) for recirculating a sub-quantity of each of the liquid sump flows (22, 21, . . . ) of an evaporation device into the respective evaporation device, and each of the circuit devices additionally has a discharge device (1 300-1, 1 300-2, . . . ) for providing one of the liquid product flows (201, 202, . . . ).

公开(公告)号：US20230407152A1

公开(公告)日：2023-12-21

申请号：US18246703

申请日：2021-09-21

Applicant: Covestro Deutschland AG

Inventor： Dirk Achten ,  Fabian Schuster ,  Ann-Christin Bijlard-Jung ,  Joerg Tillack

IPC: C09J175/06 ,  C09J11/06 ,  C09J5/00 ,  C08G18/73 ,  C08G18/75 ,  C08G18/72 ,  C08G18/42 ,  C08G18/32 ,  C08G18/66 ,  C08K5/5398

CPC classification number: C09J175/06 ,  C09J11/06 ,  C09J5/00 ,  C08G18/73 ,  C08G18/755 ,  C09J2475/00 ,  C08G18/42 ,  C08G18/3206 ,  C08G18/664 ,  C08K5/5398 ,  C08G18/722

Abstract: An adhesive composition includes a polyurethane polymer, a solvent and a co-solvent. The polyurethane polymer is an internally and/or externally hydrophilized thermoplastic polyurethane having an Mw of ≥50000 g/mol. The solvent is a polar-aprotic solvent. The co-solvent is selected from water, a primary alcohol having ≤10 carbon atoms, a vicinal diol or a mixture of at least two of the aforementioned compounds. The solvent and the co-solvent are present in such amounts that they form a homogenous mixture without the formation of a second phase when combined together at 20° C. The hydroxyl group content is ≥1 weight-%, based on the total weight of the composition. The polyurethane polymer content is ≥10 weight-%, based on the total weight of the composition and the composition forms a single continuous liquid phase. Examples for solvent/co-solvent combinations are methylethyl ketone (MEK) and water or MEK and ethanol.

公开(公告)号：US20230406025A1

公开(公告)日：2023-12-21

申请号：US18248530

申请日：2021-10-19

Applicant: Covestro Deutschland AG

Inventor： Georgios Tziovaras ,  Helge Kosthorst ,  Heinz Pudleiner ,  Theivanayagam Deivaraj

IPC: B42D25/24 ,  B42D25/36 ,  B42D25/41

CPC classification number: B42D25/24 ,  B42D25/41 ,  B42D25/36

Abstract: Provided is a layer structure, preferably a security form in a book cover, particularly preferably a security form in a book cover for identification or security documents, comprising at least a) a first radiation-engravable layer a) containing at least one polymeric material; and b) at least one further layer b) containing at least one polymeric material, preferably a thermoplastic elastomer, preferably a thermoplastic polyurethane with a hardness of ≥40 Shore A according to DIN ISO 7619-1-2012-2 to ≤95 Shore D according to DIN ISO 7619-1-2012-2; wherein the further layer b) overlies the first layer a) at least partly to form an overlapping region, and wherein a coherent engraving partly extends in the overlap region, preferably in the further layer b), and partly in the portion of layer a) that extends outside the overlap region, most preferably exclusively in the further layer b). The invention also relates to a method for producing this layer structure and to a laminate comprising such a layer structure and to the use of the layer structure in a security document.

公开(公告)号：US11795262B2

公开(公告)日：2023-10-24

申请号：US18009039

申请日：2021-06-28

Applicant: Covestro Deutschland AG

Inventor： Hans-Josef Laas ,  Raul Pires ,  Hao Liu ,  Yaguang Ma ,  Jianping Shen ,  Junchao Zheng

IPC: C08G18/28 ,  C09D175/08

CPC classification number: C08G18/283 ,  C09D175/08 ,  C08G2150/00 ,  C08G2170/00 ,  C08G2190/00

Abstract: The present invention relates to a polyether-modified polyisocyanate composition, which is obtainable by reacting a system containing the following components: a) a polyisocyanate having an isocyanate group functionality of 2-4.5; b) a polyoxyalkylene monoether alcohol; and c) optionally a catalyst; the polyoxyalkylene monoether alcohol has a number-average molecular weight of 900 g/mol-2000 g/mol and an oxypropylene group content of 45 wt. %-100 wt. %, relative to the total weight of the oxyalkylene group of the polyoxyalkylene monoether alcohol; the system has an equivalent ratio of isocyanate group to hydroxyl group of 5:1-110:1; the polyisocyanate composition has the following characteristics: i) the average isocyanate functionality is 1.8-4.1; ii) the isocyanate group content is 8-20 wt. %; and iii) the amount of the polyoxyalkylene monoether structure is greater than 10 wt. % and less than 50 wt. %, for characteristics ii) and iii), relative to the total weight of the polyisocyanate composition.

公开(公告)号：US20230303757A1

公开(公告)日：2023-09-28

申请号：US18112154

申请日：2023-02-21

Applicant: Covestro LLC ,  Covestro Deutschland AG

Inventor： Matthias Leven ,  Sascha Froebel ,  Jose Gamez ,  Brandon Parks ,  Tohru Matsumura ,  Rolf Albach

IPC: C08G18/48 ,  C08G18/20 ,  C08G18/08 ,  C08K5/02

CPC classification number: C08G18/4825 ,  C08G18/20 ,  C08G18/4887 ,  C08G18/14 ,  C08K5/02 ,  C08G2110/0025

Abstract: Disclosed are HCFO-containing isocyanate-reactive compositions that include a tertiary amine oxide catalyst. Also described are foam-forming compositions containing such isocyanate-reactive compositions, rigid foams made using such foam-forming compositions, and methods for producing such foams, including use of such foams as insulation in discontinuous foam panel applications. The isocyanate-reactive composition can exhibit a long shelf life, be shelf-stable, and produce foam with good physical properties.

公开(公告)号：US11760828B2

公开(公告)日：2023-09-19

申请号：US16645870

申请日：2018-08-21

Applicant: Covestro Deutschland AG

Inventor： Christoph Irle ,  Dieter Mager ,  Qinglan Liu ,  Limin Cheng

IPC: C08G18/79 ,  C08G18/08 ,  C08G18/78 ,  C08G18/44 ,  C08G18/18 ,  C08G18/22 ,  C08G18/32 ,  C08G18/70 ,  C08G18/73 ,  C09D175/06

CPC classification number: C08G18/44 ,  C08G18/0866 ,  C08G18/1875 ,  C08G18/222 ,  C08G18/3206 ,  C08G18/706 ,  C08G18/73 ,  C08G18/7837 ,  C08G18/792 ,  C09D175/06

Abstract: The present invention relates to a two-component system comprising a component A) comprising at least one polymeric polyol which has an OH content of ≤4.5 wt %, based on the total solids content of the polymeric polyol, and a component B) comprising at least one polyisocyanate which has a number average isocyanate group functionality of ≥4.0 to ≤10.0, based on the total solids content of the polyisocyanate, a fraction of ≤25 wt %, based on the total solids content of the polyisocyanate, of oligomers containing isocyanate groups and having a number-average molecular weight of ≤780 g/mol, and an isocyanurate group fraction of ≥5 mol % to ≤70 mol %, based on the total amount of isocyanurate groups and allophanate groups in the polyisocyanate. The invention further relates to a method for producing a coating on a substrate, to the coating obtainable by this method, and to the coated substrate.