公开(公告)号：US20240059824A1

公开(公告)日：2024-02-22

申请号：US17993829

申请日：2022-11-23

Applicant: NAN YA PLASTICS CORPORATION

Inventor： TE-CHAO LIAO ,  CHENG-LI CHAO ,  Hui-Chun Chuang

IPC: C08G18/12 ,  C08G18/42 ,  C08G18/48 ,  C08G18/32 ,  C08G18/40 ,  C08G18/08

CPC classification number: C08G18/12 ,  C08G18/4238 ,  C08G18/4854 ,  C08G18/3206 ,  C08G18/4018 ,  C08G18/0852 ,  C08G2410/00

Abstract: A polyurethane resin and a method for manufacturing the same are provided. The method includes the following steps: mixing a polyester polyol, a polyether polyol, a first chain extender, diisocyanate, and a mixed solvent for polymerization, so as to obtain a prepolymer; and adding a second chain extender into the prepolymer for chain extension, so as to obtain the polyurethane resin. The mixed solvent includes diethylformamide and methyl ethyl ketone, and a mass ratio of the diethylformamide to the methyl ethyl ketone in the mixed solvent ranges from 0.45 to 1.80. Based on a total weight of the polyurethane resin being 100 wt %, a total added amount of the first chain extender and the second chain extender ranges from 0.9 wt % to 2.5 wt %.

公开(公告)号：US20230374200A1

公开(公告)日：2023-11-23

申请号：US17979070

申请日：2022-11-02

Applicant: NAN YA PLASTICS CORPORATION

Inventor： TE-CHAO LIAO ,  CHENG-LI CHAO ,  CHAO-TUNG WU ,  JUNG-TSU WU

IPC: C08G63/16

CPC classification number: C08G63/16

Abstract: A plasticizer and a method for manufacturing the plasticizer are provided. The method for manufacturing the plasticizer includes steps as follows: mixing a dicarboxylic acid, a diol, and a catalyst to form a reactant mixture; reacting the reactant mixture at a temperature ranging from 130° C. to 220° C. so as to form a semi-product; adding an endcapping alcohol into the semi-product at a temperature ranging from 205° C. to 220° C. so as to form a coarse plasticizer; purifying the coarse plasticizer under a pressure ranging from 760 Torr to 5 Torr so as to obtain the plasticizer. The dicarboxylic acid includes adipic acid. The diol includes a polyglycol and a saturated fatty alcohol. The endcapping alcohol includes isooctyl alcohol, isodecyl alcohol, or 2-propylheptanol. The dicarboxylic acid, the diol, and the endcapping alcohol have a molar ratio ranging from 1:0.6 to 0.9:0.3 to 0.6.