POLYPROPIOLACTONES AND METHODS OF PREPARATION

    公开(公告)号:US20240228695A1

    公开(公告)日:2024-07-11

    申请号:US18286264

    申请日:2022-04-12

    申请人: Novomer, Inc.

    IPC分类号: C08G63/08

    CPC分类号: C08G63/08

    摘要: Disclosed are methods of efficiently making poly(3-hydroxypropionate) and related copolymers from beta propiolactone utilizing carboxylate salts of an onium cation. In another aspect, the present invention provides polymerization systems comprising combinations of initiators and monomers that together enable the efficient production of poly(3-hydroxypropionate) and related copolymers. Disclosed are novel polymer compositions having structures and/or compositional characteristics that differentiate them from previously produced polymers and polymer compositions.

    SYSTEMS AND PROCESSES FOR POLYACRYLIC ACID PRODUCTION

    公开(公告)号:US20210108010A1

    公开(公告)日:2021-04-15

    申请号:US17085525

    申请日:2020-10-30

    申请人: Novomer, Inc.

    发明人: Sadesh H. Sookraj

    摘要: Disclosed are systems and methods for the production of polyacrylic acid and superabsorbent polymers from ethylene oxidation to form ethylene oxide. Reacting the ethylene oxide with carbon monoxide to form to beta propiolactone (BPL) or polypropiolactone (PPL), or a combination thereof. An outlet configured to provide a carbonylation stream comprising the BPL or PPL, or a combination thereof and using one or more reactors to convert BPL to acrylic acid or to convert at least some of the BPL to PPL, and then to convert PPL to acrylic acid. An outlet configured to provide a PPL stream to a second reactor tm to convert at least some of the PPL to AA or a third reactor to convert at least some of the PPL to AA. The outlet configured to provide an AA stream to a fourth reactor to convert the AA to polyacrylic acid.

    Synthesis of metal complexes and uses thereof

    公开(公告)号:US10974234B2

    公开(公告)日:2021-04-13

    申请号:US16054904

    申请日:2018-08-03

    申请人: Novomer, Inc.

    发明人: Han Lee

    摘要: The present disclosure provides novel methods of making aluminum complexes with utility for promoting epoxide carbonylation reactions. Methods include reacting neutral metal carbonyl compounds with alkylaluminum complexes. For example, a compound of formula I: is reacted with a neutral metal carbonyl compound (such as Q′dMe(CO)w′) to produce an aluminum-based carbonylation catalyst:

    Compositions for improved production of acrylic acid

    公开(公告)号:US10781156B2

    公开(公告)日:2020-09-22

    申请号:US16023612

    申请日:2018-06-29

    申请人: Novomer, Inc.

    摘要: The present invention is directed to compositions which may undergo thermolysis to produce a higher purity acrylic acid product. In preferred embodiments of the present invention, the compositions comprise polypropiolactone and one or more active salts. The one or more active salts may catalyze thermolysis of the polypropiolactone so that the polymer depolymerizes into acrylic acid monomers. Certain concentrations of the one or more active salts result in higher purity acrylic acid products of thermolysis. In certain preferred embodiments, the one or more active salts include an acrylate group which may decompose under thermolysis to provide acrylic acid and thus decrease the concentration of undesirable contaminants in the acrylic acid product. In certain preferred embodiment, the one or more active salts comprise sodium acrylate.