公开(公告)号：US20220162788A1

公开(公告)日：2022-05-26

申请号：US17436267

申请日：2020-03-05

申请人： BASF SE

发明人： Gijsbrecht Jacobus Maria HABRAKEN ,  Klaus SCHEUERMANN ,  Gabriel SKUPIN ,  Jens-Uwe SCHIERHOLZ

IPC分类号： D04H3/011 ,  D04H3/147 ,  D04H3/16

摘要： The present invention relates to a nonwoven fabric comprising continuous spunbonded bicomponent fibers which consist of: 0 to 95% by weight of an aromatic polyester (A) in a core; to 50% by weight of a polyester blend (B) containing a) 65 to 95% of an aromatic polyester (BA) and b) 5 to 35% by weight of an aliphatic-aromatic polyester (BB) with a glass temperature below 0° C. in a sheath surrounding the core; and 0 to 5% by weight of at least one additive (C); wherein the % by weight are based in each case on the total weight of the components (A) and (B) and optionally (C); and wherein the aromatic polyesters (A) and (BA) are selected from the group consisting of poly(ethylene terephthalate) and poly(butylene terephthalate).

公开(公告)号：US20190202087A1

公开(公告)日：2019-07-04

申请号：US16323664

申请日：2017-08-01

申请人： BASF SE

发明人： Jerome LOHMANN ,  Peter GUTMANN ,  Bangaru Dharmapuri Sriramulu SAMPATH ,  Andreas KUENKEL ,  Juergen AHLERS ,  Uwe KEPPELER ,  Thomas HEITZ ,  Jens-Uwe SCHIERHOLZ

IPC分类号： B29B9/06 ,  B29B9/14 ,  B29C48/00 ,  C08L67/02

CPC分类号： B29B9/065 ,  B29B9/12 ,  B29B9/14 ,  B29B9/16 ,  B29C44/3461 ,  B29C44/445 ,  B29C48/0012 ,  B29C48/0022 ,  B29K2033/04 ,  B29K2105/0005 ,  B29K2995/0063 ,  C08J9/0061 ,  C08J9/0066 ,  C08J9/122 ,  C08J9/16 ,  C08J9/232 ,  C08J9/236 ,  C08J9/34 ,  C08J2201/026 ,  C08J2201/03 ,  C08J2203/06 ,  C08J2203/182 ,  C08J2300/16 ,  C08J2367/02 ,  C08J2400/16 ,  C08J2467/02 ,  C08L67/02 ,  C08L2203/14

摘要： The invention relates to a process for production of expanded foam beads of one or more polyesters based on aliphatic or aliphatic and aromatic dicarboxylic acids and aliphatic diols, comprising the steps of: (a) melting the polyester and admixing the polyester with 1 to 3.5 wt %, based on the polyester, of a carbon dioxide and/or nitrogen blowing agent and also 0.1 to 2 wt % of a nucleating agent, and pressing the nucleated polyester melt, containing blowing agent, through a perforated disk controlled to a temperature between 150° C. and 185° C. and into a pelletizing chamber, (b) using a cutting device to comminute the polymer melt pressed through the perforated disk into individual expanding pellets, (c) discharging the pellets from the pelletizing chamber into a stream of water which is at a temperature of 5 to 90° C. and a pressure of 0.1 bar to 20 bar above ambient pressure.