公开(公告)号：US20200376822A1

公开(公告)日：2020-12-03

申请号：US16622322

申请日：2018-04-05

Applicant: BASF SE

Inventor： Robert LOOS ,  Joerg AUFFERMANN ,  Norbert EFFEN ,  Nora SCHLUTT ,  Carsten SINKEL ,  Jerome LOHMANN ,  Gabriel SKUPIN ,  Andreas KUENKEL

IPC: B32B27/36 ,  B32B27/08 ,  B32B27/20 ,  B32B27/22

Abstract: The invention relates to a biodegradable three-layer polyester film of 8 to 20 μm in thickness having a layer construction NB/C or preferably A/B/A, wherein the two outer layers (A) or (A, C) are composed of: Ai) 55% to 99.99% by weight based on the polyester mixture of the outer layers of a polyester selected from the group consisting of: polybutylene sebacate-co-terephthalate, polybutylene sebacate-co-adipate-co-terephthalate, polybutylene sebacate-co-succinate-co-terephthalate or mixtures thereof or a mixture of polybutylene sebacate-co-terephthalate and polybutylene adipate-co-terephthalate; Aii) 0.01% to 5% by weight based on the polyester mixture of the outer layers of at least one additive selected from the group consisting of: a wax, a plasticizer, a nucleating agent, antifogging agents, fillers and an antiblocking agent; and Aiii) 0% to 44.99% by weight based on the polyester mixture of the outer layers of a further biodegradable polymer selected from the group consisting of: polylactic acid (PLA), polycaprolactone (PCL), polyhydroxyalkanoate, polypropylene carbonate (PPC) or polyester produced from aliphatic dicarboxylic acids and an aliphatic dihydroxy compound; and the middle layer B is composed of: Bai) 40% to 75% by weight based on the mixture of the middle layer of a biodegradable aliphatic-aromatic polyester; Baii) 25% to 40% by weight based on the mixture of the middle layer of starch having a plasticizer content of 0% to 5% by weight based on the total weight of the component Baii); and Baiii) 0% to 20% by weight based on the mixture of the middle layer of a further biodegradable polymer selected from the group consisting of: polylactic acid (PLA), polycaprolactone (PCL), polyhydroxyalkanoate, polypropylene carbonate (PPC) or polyester produced from aliphatic dicarboxylic acids and an aliphatic dihydroxy compound; or Bbi) 25% to 70% by weight based on the mixture of the middle layer of a biodegradable aliphatic-aromatic polyester; Bbii) 30% to 55% by weight based on the mixture of the middle layer of starch having a plasticizer content of 5% to 35% by weight based on the total weight of the component Bbii); and Bbiii) 0% to 20% by weight based on the mixture of the middle layer of a further biodegradable polymer selected from the group consisting of: polylactic acid (PLA), polycaprolactone (PCL), polyhydroxyalkanoate, polypropylene carbonate (PPC) or polyester produced from aliphatic dicarboxylic acids and an aliphatic dihydroxy compound.

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：US20190202087A1

公开(公告)日：2019-07-04

申请号：US16323664

申请日：2017-08-01

Applicant: BASF SE

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

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

CPC classification number: 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

Abstract: 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.

公开(公告)号：US20250157588A1

公开(公告)日：2025-05-15

申请号：US18838368

申请日：2023-02-17

Applicant: BASF SE

Inventor： Volker SETTELS ,  Jessica Eleanor BEAN ,  Andreas BUECHSE ,  Ning WANG ,  Sandra GONZALEZ MALDONADO ,  Glauco BATTAGLIARIN ,  Michael Bernhard SCHICK ,  Andreas KUENKEL

IPC: G16C20/10 ,  G06F30/27 ,  G06F119/04 ,  G16C20/70 ,  G16C60/00

Abstract: The invention refers to a method for determining a synthesis specification comprising a target biodegradability. A target biodegradability is provided indicative of a biodegradation characteristic of a polymer. A digital representation of a potential target synthesis specification is provided indicative of physicochemical characteristics of the polymer. A habitat is provided indicative of habitat descriptor values of habitat descriptors. A model is provided based on the habitat that is adapted to determine the biodegradability of a polymer in the habitat. The biodegradability of the potential target polymer is determined based on the provided model and the digital representation. Then the determined biodegradability is compared with the target biodegradability and either i) the potential target polymer is determined as the target polymer, or ii) a new potential target synthesis specification of a potential target polymer is provided and the determination of the biodegradability is repeated utilizing the new potential target synthesis specification.