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    POLYMER COMPOSITIONS CONTAINING ALIPHATIC ESTERS AS PLASTICISERS
    14.
    发明申请
    POLYMER COMPOSITIONS CONTAINING ALIPHATIC ESTERS AS PLASTICISERS 审中-公开
    含有作为塑料的脂肪酸酯的聚合物组合物

    公开(公告)号：US20160347931A1

    公开(公告)日：2016-12-01

    申请号：US15111053

    申请日：2015-01-09

    Applicant: NOVAMONT S.P.A.

    Inventor： Catia BASTIOLI ,  Luigi CAPUZZZI ,  Francesca DIGIOIA ,  Nicola MARINI

    IPC: C08K5/11 ,  C08K5/00 ,  C08J3/18

    CPC classification number: C08K5/11 ,  C08G63/16 ,  C08J3/18 ,  C08J2327/06 ,  C08K5/0016 ,  C08K5/10 ,  C08L67/04 ,  C08L67/02

    Abstract: This invention relates to the use of a composition of aliphatic esters having the following general formula: R1—O—C(O)—R4—C(O)—[—O—R2—O—C(O)—R5—C(O)—]m—O—R3 in which: R1 is selected from one or more of the groups consisting of H, linear and branched saturated and unsaturated alkyl residues of the C1-C24 type, and polyol residues esterified with C1-C24 monocarboxylic acids; R2 comprises —CH2—C(CH3)2—CH2— and C2-C8 alkylene groups, and comprises at least 50% in moles of the said —CH2—C(CH3)2—CH2— groups; R3 is selected from one or more of the groups consisting of H, linear and branched saturated and unsaturated alkyl residues of the C1-C24 type, and polyol residues esterified with C1-C24 monocarboxylic acids; R4 and R5 comprise one or more C2-C22 alkylenes and comprise at least 50% in moles of C7 alkylenes; m lies between 1 and 20, as plasticizers for polymer compositions. These esters are particularly suitable for use as plasticizers for various types of polymers such as for example vinyl polymers of the polyvinyl chloride (PVC) type, thermoplastic elastomers, and hydroxy acid polyesters, for example polyesters of lactic acid.

    REUSE OF BIOPLASTICS IN POLYMERISATION
    18.
    发明公开
    REUSE OF BIOPLASTICS IN POLYMERISATION 审中-公开

    公开(公告)号：US20230257546A1

    公开(公告)日：2023-08-17

    申请号：US18005414

    申请日：2021-07-14

    Applicant: NOVAMONT S.P.A.

    Inventor： Catia BASTIOLI ,  Roberto VALLERO

    IPC: C08J11/14

    CPC classification number: C08J11/14 ,  C08J2367/02

    Abstract: The present invention relates to a process for the reuse in polymerization of a biodegradable polymeric composition re) comprising a mixture of polyesters. The process comprises the steps of: 1) reacting said polymeric composition with water at a temperature higher than the melting temperature of at least one of said polyesters, obtaining a depolymerization product comprising monomers of said polyesters and/or their oligomers in a mixture, 2) separating from said depolymerization product a fraction comprising impurities and/or fillers, 3) subjecting said monomers and/or oligomers to polymerization, in quantities from 1% to 100% by weight, with respect to the mixture subjected to polymerization, obtaining a polymeric composition biodegradable. Further objects of the invention are the polymers obtained by means of said reuse process, the biodegradable polymeric compositions that comprise said polymers and the biodegradable articles obtained from said composition

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