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    PROCESS FOR PREPARING POLY(ALKYLENE FURANDICARBOXYLATE)
    1.
    发明公开
    PROCESS FOR PREPARING POLY(ALKYLENE FURANDICARBOXYLATE) 审中-公开

    公开(公告)号：US20240218118A1

    公开(公告)日：2024-07-04

    申请号：US18601303

    申请日：2024-03-11

    申请人： Covation Inc.

    发明人： Hari Babu SUNKARA ,  Paul J. PIGLIACAMPI

    IPC分类号： C08G63/672 ,  C08G63/181 ,  C08G63/85 ,  C08K5/18

    CPC分类号： C08G63/672 ,  C08G63/181 ,  C08G63/85 ,  C08K5/18

    摘要： A process to prepare poly(alkylene furandicarboxylate) polymer is disclosed herein. In one embodiment, the process comprises a) contacting a mixture comprising furandicarboxylic acid dialkyl ester, a diol comprising ethylene glycol, 1,3-propanediol, 1,4-butanediol, 1,4cyclohexanedimethanol, or mixtures thereof, and a metal catalyst at a temperature in the range of from about 140° C. to about 220° C. to form prepolymer, wherein the mole ratio of the furandicarboxylic acid dialkyl ester to



    a) the diol is in the range of from 1:1.3 to 1:2.2;
    b) performing polycondensation by heating the prepolymer under
    reduced pressure to a temperature in the range of from about 220° C. to about 260° C. to form poly(alkylene furandicarboxylate) polymer; wherein the rate of polycondensation in step c) is faster with the anthraquinone compound present than without; and
    c) adding at least one anthraquinone compound as disclosed herein; and

    POLYMER COMPRISING LONG CHAIN HYDROXY ACIDS
    2.
    发明公开
    POLYMER COMPRISING LONG CHAIN HYDROXY ACIDS 审中-公开

    公开(公告)号：US20240182632A1

    公开(公告)日：2024-06-06

    申请号：US18556282

    申请日：2022-04-11

    申请人： EVONIK OPERATIONS GMBH

    发明人： Tim SMOLNIK ,  Erik KERSTEN ,  Rolf SCHNEIDER

    IPC分类号： C08G63/06 ,  C08G63/85 ,  C08G63/87 ,  C08J5/18

    CPC分类号： C08G63/06 ,  C08G63/85 ,  C08G63/87 ,  C08J5/18 ,  C08J2367/04

    摘要： A process for preparing a polymer from a 3-hydroxy carboxylic acid as monomer comprising at least 8 carbon atoms where the polymerisation reaction is conducted at a temperature of from 100° C. to 180° C. while removing water from the reaction mixture, wherein 50 to 100 mol-% of the monomers used are 3-hydroxy carboxylic acids comprising at least 8 carbon atoms. A polymer comprising units based on 3-hydroxy carboxylic acid, comprising at least 8 carbon atoms, characterized in that of from 60 to 100 mol-% of the units are based on beta-hydroxy carboxylic acids, comprising at least 8 carbon atoms and films, foils, flexible packaging, and barrier coatings comprised of said polymers.

    POLYESTER COMPOSITIONS COMPRISING TETRAMETHYL CYCLOBUTANEDIOL HAVING AN IMPROVED CATALYST SYSTEM COMPRISING TITANIUM AND ZINC ATOMS
    6.
    发明公开
    POLYESTER COMPOSITIONS COMPRISING TETRAMETHYL CYCLOBUTANEDIOL HAVING AN IMPROVED CATALYST SYSTEM COMPRISING TITANIUM AND ZINC ATOMS 审中-公开

    公开(公告)号：US20240052094A1

    公开(公告)日：2024-02-15

    申请号：US18257703

    申请日：2021-12-16

    申请人： Eastman Chemical Company

    发明人： Brian Alan Schaefer ,  Kate Elizabeth Allen

    IPC分类号： C08G63/199 ,  C08G63/672 ,  C08G63/85 ,  C08G63/83

    CPC分类号： C08G63/199 ,  C08G63/672 ,  C08G63/85 ,  C08G63/83

    摘要： This invention relates to a polyester composition comprising: (1) at least one polyester which comprises: (a) a dicarboxylic acid component comprising: (i) about 70 to about 100 mole % residues of terephthalic acid or esters thereof; (ii) about 0 to about 30 mole % of aromatic and/or aliphatic dicarboxylic acid residues having up to 20 carbon atoms; (b) a glycol component comprising: (i) about 10 to about 50 mole % of 2,2,4,4-tetramethyl-1,3-cyclobutanediol residues; (ii) about 50 to about 90 mole % residues of modifying glycols; wherein the total mole % of the dicarboxylic acid component of the final polyester is 100 mole %; wherein the total mole % of the glycol component of the final polyester is 100 mole %; and (2) residues comprising titanium atoms and zinc atoms, and less than 30 ppm, or less than 20 ppm, or less than 10 ppm, or less than 5 ppm, or less than 2 ppm, or from 0 to 30 ppm, or from 0 to 20 ppm, or from 0 to 10 ppm, or 0 ppm of tin atoms.

    NOVEL THERMOPLASTIC POLYESTERS AND SYNTHESIS THEREFOR
    7.
    发明公开
    NOVEL THERMOPLASTIC POLYESTERS AND SYNTHESIS THEREFOR 审中-公开

    公开(公告)号：US20240043609A1

    公开(公告)日：2024-02-08

    申请号：US18257454

    申请日：2021-12-16

    申请人： Eastman Chemical Company

    发明人： Kate Elizabeth Allen ,  Jason Christopher Jenkins

    IPC分类号： C08G63/183 ,  C08G63/137 ,  C08G63/84 ,  C08G63/85 ,  C08G63/83

    CPC分类号： C08G63/183 ,  C08G63/137 ,  C08G63/84 ,  C08G63/85 ,  C08G63/83

    摘要： This invention relates to a process for making at least one polyester comprising: (a) a dicarboxylic acid component comprising: (i) 70 to 100 mole % of terephthalic acid residues; (ii) 0 to 30 mole % of aromatic dicarboxylic acid residues having up to 20 carbon atoms; and (iii) 0 to 10 mole % of aliphatic dicarboxylic acid residues having up to 16 carbon atoms; (b) a glycol component comprising: (i) 10 to 50 mole % of 2,2,4,4-tetramethyl-1,3-cyclobutanediol residues, which is a combination of greater than 80 mole % of cis-2,2,4,4-tetramethyl-1,3-cyclobutanediol and less than 20 mole % of trans-2,2,4,4-tetramethyl-1,3-cyclobutanediol, or greater than 85 mole % of cis-2, 2,4,4-tetramethyl-1,3-cyclobutanediol and less than 15 mole % of trans-2,2,4,4-tetramethyl-1,3-cyclobutanediol, or greater than 90 mole % of cis-2,2,4,4-tetramethyl-1,3-cyclobutanediol and less than 10 mole % of trans-2,2,4,4-tetramethyl-1,3-cyclobutanediol, or greater than 95 mole % of cis-2, 2,4,4-tetramethyl-1,3-cyclobutanediol and less than 5 mole % of trans-2,2,4,4-tetramethyl-1,3-cyclobutanediol; (ii) 50 to 90 mole % of cyclohexanedimethanol residues; and (iii) optionally, residues of at least one modifying glycol; wherein the total mole % of the dicarboxylic acid component of the final polyester is 100 mole %; wherein the total mole % of the glycol component of the final polyester is 100 mole %; and wherein the inherent viscosity of the final polyester is from 0.35 to 1.2 dL/g as determined in 60/40 (wt/wt) phenol/tetrachloroethane at a concentration of 0.25 g/50 ml at 25° C.; and wherein the final polyester has a Tg from 85° C. to 150° C.

    Method for manufacturing polyester polyhydric alcohol
    10.
    发明授权
    Method for manufacturing polyester polyhydric alcohol 有权

    公开(公告)号：US11840605B2

    公开(公告)日：2023-12-12

    申请号：US17337646

    申请日：2021-06-03

    申请人： NAN YA PLASTICS CORPORATION

    发明人： Te-Chao Liao ,  Jung-Jen Chuang ,  Zhang-Jian Huang

    IPC分类号： C08G63/85 ,  C08G63/16

    CPC分类号： C08G63/85 ,  C08G63/16

    摘要： A method for manufacturing polyester polyhydric alcohol is provided. The method for manufacturing the polyester polyhydric alcohol includes steps as follows. A polybasic acid and a first polyhydric alcohol are mixed for a first oligomerization reaction, so as to form a first oligomer mixture. A second polyhydric alcohol is added into the first oligomer mixture for a second oligomerization reaction when a remaining amount of the first polyhydric alcohol in the first oligomer mixture is lower than or equal to 1 mol %, so as to form a second oligomer mixture. A catalyst is added into the second oligomer mixture for a polycondensation reaction, so as to obtain a polyester polyhydric alcohol product. The polyester polyhydric alcohol product has an Alpha value of lower than 30.