公开(公告)号：US11673997B2

公开(公告)日：2023-06-13

申请号：US16527459

申请日：2019-07-31

申请人： COVESTRO LLC

发明人： Jay A. Johnston ,  Adam Miller ,  Kevan Hudson

IPC分类号： C08G73/02 ,  B01J31/02 ,  C08G18/46 ,  C08G18/76 ,  C09D175/02 ,  C08G18/16 ,  C08G18/28 ,  C08G18/32 ,  C09J175/02 ,  C08G18/38 ,  C08G18/79 ,  C08L75/02

CPC分类号： C08G73/0213 ,  B01J31/0202 ,  C08G18/168 ,  C08G18/282 ,  C08G18/283 ,  C08G18/2825 ,  C08G18/3215 ,  C08G18/3821 ,  C08G18/4623 ,  C08G18/7635 ,  C08G18/792 ,  C09D175/02 ,  C09J175/02 ,  C08G2190/00 ,  C08L75/02

摘要： The present invention provides a polyaspartic composition comprising a reaction product of a polyamine and a Michael addition receptor reacted in the presence of a catalyst comprising a phenolic compound, with the proviso that the phenolic compound is not a phenol which is substituted with tert-butyl groups in both ortho positions to the oxygen. Suitable phenolic compounds include phenols, phenolic aldehydes, alkylphenols, benzenediols, cashew nut oil, and combinations thereof. Coatings, adhesives, sealants, composites, castings, and films comprising a polyurea composition may be made by reacting a polyisocyanate with the inventive polyaspartic composition. In particular, floor coatings made with the inventive polyaspartic composition have an elongated work time and a short walk-on time compared to current floor coatings.

公开(公告)号：US20190039362A1

公开(公告)日：2019-02-07

申请号：US16046220

申请日：2018-07-26

申请人： Covestro LLC

发明人： Carol Knox ,  Kevan Hudson ,  Makoto Nakao

IPC分类号： B32B27/40 ,  C08L75/08 ,  C08K5/3415 ,  C08L67/00

摘要： The present invention provides an aqueous polyurethane dispersion (PUD) comprising an amorphous polyester having a glass transition temperature (Tg) as determined by differential scanning calorimetry of less than −30° C.; wherein the aqueous polyurethane dispersion (PUD) has a glass transition temperature (Tg) as determined by differential scanning calorimetry (DSC) of 0° C. to 20° C. and a hard block content of greater than 50% and wherein the aqueous polyurethane dispersion (PUD) provides resistance to one or more selected from the group consisting of 10% HCl, water, motor oil, diesel fuel, 10% acetic acid, methyl ethyl ketone and 25% NaOH. Coatings, adhesives, sealants, paints, primers, and topcoats, made from the inventive aqueous polyurethane dispersion (PUD) provide good chemical resistance to a variety of surfaces including floors, windows, doors, window frames, door frames, window shutters, railing, gates, pillars, arbors, pergolas, trellises, gazebos, posts, fencing, pipes and fittings, wire and cable insulation, automobile components, credit cards, and siding.