公开(公告)号：US20220195113A1

公开(公告)日：2022-06-23

申请号：US17612246

申请日：2020-05-19

Applicant: BASF SE

Inventor： Timo Benjamin WITT ,  Norbert EFFEN ,  Jerome LOHMANN ,  Motonori YAMAMOTO ,  Andreas KUENKEL

IPC: C08G63/90 ,  C08G63/183 ,  C08G63/80

Abstract: The present invention relates to a continuous process for purifying an aliphatic-aromatic polyester constructed from aliphatic dicarboxylic acids, aromatic dicarboxylic acids and aliphatic diols in a degassing apparatus, wherein the crude polyester is degassed for 3 to 30 minutes at a pressure of 0.01 to 5 mbar in the presence of 1% to 7% by weight, based on the total weight of the crude polyester, of an entraining agent.

公开(公告)号：US20250129272A1

公开(公告)日：2025-04-24

申请号：US18695857

申请日：2022-09-27

Applicant: BASF SE

Inventor： Michael Bernhard SCHICK ,  Jerome LOHMANN ,  Timo Benjamin WITT ,  Frank BLOSS

IPC: C09J7/29 ,  C09J133/08 ,  C09J175/04

Abstract: The present invention relates to a biodegradable lamination film having the A/B layer structure, where layer A of thickness 0.5 to 7 μm comprises a polyurethane or acrylate adhesive; and where layer B of thickness 5 to 150 μm comprises an aliphatic polyester and/or aliphatic-aromatic polyester, where the aliphatic-aromatic polyester is of the following composition: b1-i) 30 to 70 mol %, based on components b1-i and b1-ii, of a C6-C18 dicarboxylic acid; b1-ii) 30 to 70 mol %, based on components b1-i and b1-ii, of terephthalic acid; b1-iii) 98 to 100 mol %, based on components b1-i and b1-ii, of propane-1,3-diol or butane-1,4-diol; b1-iv) 0% to 2% by weight, based on components b1-i and b1-iii, of a chain extender and/or branching agent.

公开(公告)号：US20220033645A1

公开(公告)日：2022-02-03

申请号：US17311177

申请日：2019-12-05

Applicant: BASF SE

Inventor： Jerome LOHMANN ,  Maximilian LEHENMEIER ,  Norbert EFFEN ,  Martin BUSSMANN ,  Michael Bernhard SCHICK ,  Timo Benjamin WITT

IPC: C08L67/02

Abstract: The present invention relates to a process for producing a (co)polyester, wherein the (co)polyester at least partially consists of 1,4-butylene dicarboxylate units, in a degassing plant, wherein the crude (co)polyester is degassed in the presence of 0.1% to 5% by weight, based on the total weight of the input materials, of an entraining agent at a pressure between 5 to 300 mbar.