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    PROCESS OF MANUFACTURING A PRESSURE SENSITIVE ADHESIVE HAVING A LOW VOC CHARACTERISTICS
    2.
    发明申请
    PROCESS OF MANUFACTURING A PRESSURE SENSITIVE ADHESIVE HAVING A LOW VOC CHARACTERISTICS 有权

    公开(公告)号：US20210395579A9

    公开(公告)日：2021-12-23

    申请号：US17252348

    申请日：2019-06-20

    Applicant: 3M INNOVATIVE PROPERTIES COMPANY

    Inventor： Niklas M. Matzeit ,  Pierre R. Bieber ,  Petra M Stegmaier ,  Eike H. Klünker ,  Dmitri D. Iarikov ,  Jeffrey M. Imsande ,  Shijing Cheng ,  Michele A. Craton ,  George J. Clements

    IPC: C09J133/08 ,  C08J3/00 ,  C08J3/24 ,  C09J7/38 ,  B29C48/40 ,  B29C48/285 ,  B29C48/08

    Abstract: The present disclosure relates to a process of manufacturing a pressure sensitive adhesive, comprising the steps of: a) providing a hot melt mixing apparatus comprising a reaction chamber; b) providing a hot melt processable pressure sensitive adhesive composition comprising: (1) a (meth)acrylate copolymer component comprising: i. C1-C32 (meth)acrylic acid ester monomer units; ii. optionally, ethylenically unsaturated monomer units having functional groups selected from the group consisting of acid, hydroxyl, acid anhydride, epoxide, amine, amide groups, and any combinations thereof; and iii. optionally, further ethylenically unsaturated monomer units which are copolymerizable with monomer units (i) and/or (ii); and (2) a crosslinking system selected from the group consisting of thermal crosslinking systems, actinic radiation crosslinking systems, and any combinations thereof; (3) optionally, at least one expandable microsphere; and (4) optionally, at least one pigment; c) providing a polymeric resin; d) subjecting the polymeric resin to a heating step (thereby at least partly remove low Volatile Organic Compounds (VOC) from the polymeric resin) thereby forming a cleaned polymeric resin; e) incorporating the cleaned polymeric resin and the hot melt processable pressure sensitive adhesive composition in the reaction chamber of the hot melt mixing apparatus; -57-f) mixing the hot melt processable pressure sensitive adhesive composition and the cleaned polymeric resin in the hot melt mixing apparatus thereby forming a hot melt blend; g) removing the hot melt blend from the hot melt mixing apparatus; and h) optionally, crosslinking the hot melt blend.

    PROCESS OF MANUFACTURING A PRESSURE SENSITIVE ADHESIVE HAVING A LOW VOC CHARACTERISTICS
    3.
    发明申请
    PROCESS OF MANUFACTURING A PRESSURE SENSITIVE ADHESIVE HAVING A LOW VOC CHARACTERISTICS 有权

    公开(公告)号：US20210269684A1

    公开(公告)日：2021-09-02

    申请号：US17252348

    申请日：2019-06-20

    Applicant: 3M INNOVATIVE PROPERTIES COMPANY

    Inventor： Niklas M. Matzeit ,  Pierre R. Bieber ,  Petra M Stegmaier ,  Eike H. Klünker ,  Dmitri D. Iarikov ,  Jeffrey M. Imsande ,  Shijing Cheng ,  Michele A. Craton ,  George J. Clements

    IPC: C09J133/08 ,  C08J3/00 ,  C08J3/24 ,  C09J7/38 ,  B29C48/40 ,  B29C48/285 ,  B29C48/08

    Abstract: The present disclosure relates to a process of manufacturing a pressure sensitive adhesive, comprising the steps of: a) providing a hot melt mixing apparatus comprising a reaction chamber; b) providing a hot melt processable pressure sensitive adhesive composition comprising: (1) a (meth)acrylate copolymer component comprising: i. C1-C32 (meth)acrylic acid ester monomer units; ii. optionally, ethylenically unsaturated monomer units having functional groups selected from the group consisting of acid, hydroxyl, acid anhydride, epoxide, amine, amide groups, and any combinations thereof; and iii. optionally, further ethylenically unsaturated monomer units which are copolymerizable with monomer units (i) and/or (ii); and (2) a crosslinking system selected from the group consisting of thermal crosslinking systems, actinic radiation crosslinking systems, and any combinations thereof; (3) optionally, at least one expandable microsphere; and (4) optionally, at least one pigment; c) providing a polymeric resin; d) subjecting the polymeric resin to a heating step (thereby at least partly remove low Volatile Organic Compounds (VOC) from the polymeric resin) thereby forming a cleaned polymeric resin; e) incorporating the cleaned polymeric resin and the hot melt processable pressure sensitive adhesive composition in the reaction chamber of the hot melt mixing apparatus; -57-f) mixing the hot melt processable pressure sensitive adhesive composition and the cleaned polymeric resin in the hot melt mixing apparatus thereby forming a hot melt blend; g) removing the hot melt blend from the hot melt mixing apparatus; and h) optionally, crosslinking the hot melt blend.

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