公开(公告)号：US10106485B2

公开(公告)日：2018-10-23

申请号：US15532306

申请日：2015-12-01

申请人： Rhodia Acetow GmbH

发明人： Thomas Krumrey ,  Andreas Hummel ,  Dirk Hölter

IPC分类号： C07C51/56 ,  C07C51/573 ,  C07C49/90 ,  C07C11/21 ,  B27K5/00

摘要： The present invention concerns a process for manufacturing a fraction comprising carboxylic acid anhydride by reaction of a fraction comprising carboxylic acid with a ketene, and the use of the fraction comprising carboxylic acid anhydride in a process for acylation of polysaccharides.

公开(公告)号：US20180305052A1

公开(公告)日：2018-10-25

申请号：US15569847

申请日：2016-04-28

申请人： Rhodia Acetow GmbH

发明人： Thomas Krumrey ,  Dietmar Kern

IPC分类号： B65B27/12 ,  B65B51/10 ,  B65B11/58

摘要： The present invention relates to a method for producing a packed bale of highly compacted filter tow material. A compressed filter tow bale is first provided in cuboid shape in a baler. Then the compressed filter tow bale is packaged, having an air-tight packaging sleeve fully enclosing the compressed filter tow bale. According to the invention, the packaging sleeve is applied to the compressed filter tow bales such that at least 80%, preferably at least 90% and more preferably at least 95%, of the packaging sleeve is directly adjacent to the highly compacted filter tow material and touches, or is at least spaced less than 15 mm from, the highly compacted filter tow material.

公开(公告)号：US10017449B2

公开(公告)日：2018-07-10

申请号：US15504494

申请日：2015-08-13

申请人： Rhodia Acetow GmbH

发明人： Thomas Krumrey ,  Andreas Hummel ,  Dirk Hölter

IPC分类号： C07C51/42 ,  C08H8/00 ,  B27K3/34

CPC分类号： C07C51/42 ,  B27K3/346 ,  B27N1/00 ,  C07C51/44 ,  C08H8/00 ,  Y02P20/582 ,  C07C53/08

摘要： The present invention concerns a process for the recovery of carboxylic acid from a fraction comprising carboxylic acid and impurities, and a process for the manufacture of treated wood, which comprise the step of submitting a fraction containing carboxylic acid and impurities to a gas stripping operation.

公开(公告)号：US11028035B2

公开(公告)日：2021-06-08

申请号：US16616163

申请日：2018-04-26

申请人： Rhodia Acetow GmbH

发明人： Andreas Hummel ,  Thomas Krumrey

IPC分类号： C07C45/82 ,  B01D3/14 ,  B01D3/00 ,  C07C49/08

摘要： The invention relates to a method for separating acetone from acetone/water mixtures, according to which a partial flow of the acetone/water mixture is concentrated in a column operating under positive pressure in order to obtain a product with an acetone concentration of at least 80 wt. %, and a partial flow of the acetone/water mixture is concentrated in a column operating under normal pressure. The top product from the column operated under positive pressure is used to heat the bottom product of the column operated under normal pressure, by means of a heat exchanger, and the top product is then introduced into the column operated under normal pressure, above the supply of the partial flow of the acetone/water mixture. This method allows the specific energy demand for acetone separation to be significantly reduced, thereby presenting considerable cost advantages. The invention also relates to a device for carrying out such a method.

公开(公告)号：US10793305B2

公开(公告)日：2020-10-06

申请号：US15569847

申请日：2016-04-28

申请人： Rhodia Acetow GmbH

发明人： Thomas Krumrey ,  Dietmar Kern

IPC分类号： B65B27/12 ,  B65B11/58 ,  B65B51/10

摘要： The present invention relates to a method for producing a packed bale of highly compacted filter tow material. A compressed filter tow bale is first provided in cuboid shape in a baler. Then the compressed filter tow bale is packaged, having an air-tight packaging sleeve fully enclosing the compressed filter tow bale. According to the invention, the packaging sleeve is applied to the compressed filter tow bales such that at least 80%, preferably at least 90% and more preferably at least 95%, of the packaging sleeve is directly adjacent to the highly compacted filter tow material and touches, or is at least spaced less than 15 mm from, the highly compacted filter tow material.