公开(公告)号：US20240360291A1

公开(公告)日：2024-10-31

申请号：US18646185

申请日：2024-04-25

申请人： NOURYON CHEMICALS INTERNATIONAL B.V.

发明人： Magnus JONSSON ,  Anna EKMARKER ,  Despina KYRIAKIDOU

IPC分类号： C08J9/32 ,  C08F220/14 ,  C08F220/44 ,  C08J9/14 ,  C08J9/20

CPC分类号： C08J9/32 ,  C08F220/14 ,  C08F220/44 ,  C08J9/141 ,  C08J9/20 ,  C08J2203/14 ,  C08J2203/22 ,  C08J2300/22

摘要： Thermoplastic thermally expandable microspheres comprise a polymer shell and a propellant, wherein the polymer shell is formed from ethylenically unsaturated monomers and encapsulates the propellant, and wherein the ethylenically unsaturated monomers comprise acrylonitrile in an amount from 45 to 80 weight %, methacrylonitrile in an amount of from 10 to 45 weight %, and methyl acrylate and/or methyl methacrylate in an amount of 5 to 35 weight %, each based on the total weight of ethylenically unsaturated monomers, and wherein the thermoplastic thermally expandable microspheres comprise the propellant in an amount of 5 to 17 weight %, based on the total weight of the thermoplastic thermally expandable microspheres. The thermoplastic thermally expandable microspheres are formed in a process of the disclosure and may be present in an aqueous slurry.

公开(公告)号：US20200347197A1

公开(公告)日：2020-11-05

申请号：US16758637

申请日：2018-11-20

申请人： NOURYON CHEMICALS INTERNATIONAL B.V.

发明人： Ove NORDIN ,  Anna EKMARKER ,  Evelina WALTERSSON

IPC分类号： C08J9/232 ,  C08J9/20 ,  C08J9/00 ,  C08J9/14

摘要： The present invention relates to thermally expandable microspheres at least partially prepared from bio-based monomers and to a process of their manufacture. The microspheres comprise a thermoplastic polymer shell encapsulating a blowing agent, wherein the thermoplastic polymer shell comprises a copolymer of an itaconate dialkylester and at least one aliphatic or aromatic mono-ethylenically unsaturated comonomer, wherein the itaconate dialkylester is according to formula (1): wherein each of R1 and R2, separately from one another, is an alkyl group preferably with 1-4 carbon atoms, and wherein the copolymer contains 0-50 wt. % of vinyl aromatic comonomers, based on the total weight of the comonomers. The invention further provides expanded microspheres, which can be used in a variety of applications.