公开(公告)号：US20240174794A1

公开(公告)日：2024-05-30

申请号：US18284723

申请日：2022-03-25

申请人： TOYOBO CO., LTD. ,  Nagoya Institute of Technology

发明人： Shoko UCHIYAMA ,  Hideki TANAKA ,  Akinori TAKASU

IPC分类号： C08G63/183 ,  C08G63/78

CPC分类号： C08G63/183 ,  C08G63/78 ,  C08G2150/00 ,  C08G2170/00

摘要： An object of the present invention is to provide a polyester resin that has a high degree of freedom in design and that can have excellent biodegradability even with an increased molecular weight. A polyester of the present invention contains a hydroxy group-containing dicarboxylic acid component and a diol component (excluding a hydroxy group-containing dicarboxylic acid component) as copolymerization components, wherein more than 50 mol % of an aliphatic diol component is contained in 100 mol % of the diol component, the polyester has a number average molecular weight of 3000 or higher, and the polyester has a total hydroxyl value of 1000 eq/ton or higher.

公开(公告)号：US20240228700A1

公开(公告)日：2024-07-11

申请号：US18289040

申请日：2022-03-10

申请人： Nagoya Institute of Technology ,  TOYOBO CO., LTD.

发明人： Mikihiro HAYASHI ,  Takaya INABA ,  Shoko UCHIYAMA

IPC分类号： C08G63/91 ,  C08G63/688

CPC分类号： C08G63/916 ,  C08G63/6886

摘要： An object is to provide a crosslinked polyester resin that does not lose bond exchange activity even when immersed in water, an organic solvent, or the like and in which bond exchange is fast. Another object is to provide a polyester resin in which bond exchange is fast.
A crosslinked polyester resin in which a polyester resin having a plurality of side chains each having a carboxy group and a plurality of side chains each having a tertiary amino group is crosslinked by an epoxy-based crosslinking agent having a plurality of epoxy groups.

公开(公告)号：US20230100664A1

公开(公告)日：2023-03-30

申请号：US17799063

申请日：2021-02-05

申请人： TOYOBO CO., LTD.

发明人： Shoko UCHIYAMA

IPC分类号： C08G63/06 ,  C09D167/04 ,  C09J167/04

摘要： The present invention provides an aromatic polyester having several operative functional groups and a method for producing same. An aromatic polyester comprising a polycarboxylic acid component and a polyhydric alcohol component as a copolymerization component, wherein the aromatic polyester comprises a polycarboxylic acid component having an operative functional group by 50 mol % or more when a total amount of the polycarboxylic acid component is taken as 100 mol %, and the aromatic polyester comprises an aromatic polyhydric alcohol component by 50 mol % or more when a total amount of the polyhydric alcohol component is taken as 100 mol %.

公开(公告)号：US20230383053A1

公开(公告)日：2023-11-30

申请号：US18031761

申请日：2021-10-14

申请人： TOYOBO CO., LTD.

发明人： Shoko UCHIYAMA ,  Mikihiro HAYASHI

IPC分类号： C08G63/183 ,  C08G63/91 ,  C08K5/1515 ,  C08K5/098 ,  C08L67/02

CPC分类号： C08G63/183 ,  C08G63/916 ,  C08K5/1515 ,  C08K5/098 ,  C08L67/02 ,  C08L2312/00

摘要： An object is to provide a crosslinked aromatic polyester resin composition that has high strength at room temperature and is capable of reprocessing, adhering films to each other, and self-repairing at a bond exchange activation temperature thereof or higher, due to “dynamic” covalent crosslinks allowing bond exchange at high temperatures. A crosslinked aromatic polyester resin composition, comprising a crosslinked aromatic polyester resin (C), and a transesterification catalyst (D), wherein the crosslinked aromatic polyester resin composition satisfies the following requirements (1) and (2): (1) the crosslinked aromatic polyester resin (C) is a reaction product of an aromatic polyester resin (A) having a carboxy group on a side chain and an epoxy compound (B), and (2) when the crosslinked aromatic polyester resin composition is measured by infrared spectroscopy, a ratio (A3200-3600/A1730) of an absorbance (A3200-3600) of a peak, around wave number of 3200 to 3600 cm−1, derived from a hydroxyl group to an absorbance (A1730) of a peak, around wave number of 1730 cm−1, derived from an ester bond is not lower than 0.005 and not higher than 0.038.

公开(公告)号：US20230383115A1

公开(公告)日：2023-11-30

申请号：US18031770

申请日：2021-10-14

申请人： TOYOBO CO., LTD.

发明人： Shoko UCHIYAMA ,  Mikihiro HAYASHI

IPC分类号： C08L67/02 ,  C08K5/18 ,  C08G63/688 ,  C08G63/21

CPC分类号： C08L67/02 ,  C08K5/18 ,  C08G63/688 ,  C08G63/21 ,  C08L2312/00

摘要： An object is to provide a crosslinked polyester resin that has high strength at room temperature but is capable of reprocessing, adhesion between films, and self-repair at a softening temperature thereof or higher, due to dynamic covalent crosslinks allowing bond exchange at high temperatures, that exhibits softening behavior due to bond exchange by a transesterification reaction even without containing any transesterification catalyst, and that exhibits self-adhesiveness, remoldability, and scratch repair properties. A crosslinked polyester resin in which a polyester resin having a carboxy group on a side chain is crosslinked by an epoxy-based crosslinking agent having a plurality of epoxy groups, wherein the epoxy-based crosslinking agent includes an epoxy amine compound having two or more tertiary amino groups and two or more epoxy groups in a molecule, and an amount of the epoxy amine compound is 3 to 30 parts by mole per 100 parts by mole of the carboxy group of the polyester resin.