POLYUNSATURATED COMPOUND FOR CURING FLUOROELASTOMER COMPOSITIONS

    公开(公告)号:US20200291147A1

    公开(公告)日:2020-09-17

    申请号:US16084120

    申请日:2017-02-28

    Abstract: The invention pertains to a polyunsaturated compound having formula (I) [compound (DAIC-PFPE)]: TA-O—Rf-TA′ wherein: —Rf is (per)fluoropolyoxyalkylene chain [chain (Rf)] comprising recurring units having at least one catenary ether bond and Sat least one fluorocarbon moiety; TA and TA′, equal to or different from each other, are selected from the group consisting of: (i) C1-C24 (hydro)(fluoro)carbon groups, possibly comprising one or more than one of H, O, and Cl; and (ii) (hydro)(fluoro)carbon group comprising at least one diallylisocyanurate group of formula (A) wherein each of R1, R2, R3, R4, R5, and R6 is, independently, a hydrogen atom or a C1-C3 hydrocarbon group, preferably a hydrogen atom (group TDAIC), with the provisio that at least one of TA and TA′ is a group TDAIC, to a process for its manufacture and its use for curing fluoroelastomers, to fluoroelastomer compositions comprising the same, as well as to a process for producing fluororubber mouldings therefrom.

    PERFLUOROELASTOMER COMPOSITION
    5.
    发明申请

    公开(公告)号:US20170204230A1

    公开(公告)日:2017-07-20

    申请号:US15327860

    申请日:2015-07-16

    Abstract: The invention pertains to a perfluoroelastomer composition comprising: at least one perfluoroelastomer comprising iodine and/or bromine atoms [perfluoroelastomer (A)]; from 0.5 to 5 weight parts, per 100 parts by weight of said perfluoroelastomer (A), of at least one bis-olefin [bis-olefin (OF)] having general formula (1) wherein R1, R2, R3, R4, R5 and R6, equal or different from each other, are H, a halogen, or a C1-C5 optionally halogenated group, possibly comprising one or more oxygen group; Z is a linear or branched C1-C18 optionally halogenated alkylene or cycloalkylene radical, optionally containing oxygen atoms, or a (per)fluoropolyoxyalkylene radical; from 0.1 to 3 weight parts, per 100 parts by weight of said perfluoroelastomer (A), of at least one organic peroxide; from 0.1 to 3 weight parts, per 100 parts by weight of said perfluoroelastomer (A), of at least one organic base [base (B)] selected from the group consisting of: (i) non-aromatic primary amines or amides complying with general formula (B1m) or (Bid): Rbm—[C(0)]t-NH2 (B1m) H2N—[C(O)]t′—Rdm—[C(O)]t″—NH2 (Bid) wherein: each of t, t′ and t″, equal to or different from each other and at each occurrence is zero or 1; Rbm is a monovalent hydrocarbon non-aromatic group having 12 to 30 carbon atoms; Rdm is a divalent hydrocarbon non-aromatic group having 6 to 30 carbon atoms; and (ii) cycloaliphatic secondary or tertiary amines complying with general formula (II) (B2m) or (B2d) wherein: Cy represents a divalent aliphatic group comprising at least 4 carbon atoms, optionally comprising one or more than one ethylenically unsaturated double bond, and optionally comprising one or more catenary nitrogen atoms, forming a cycle with the nitrogen atom which is connected thereto; Cy′ represent a trivalent aliphatic group comprising at least 5 carbon atoms, optionally comprising one or more than one ethylenically unsaturated double bond, and optionally comprising one or more catenary nitrogen atoms, forming a cycle with the nitrogen atom which is connected thereto.

    FLUOROELASTOMER COMPOSITION
    8.
    发明申请

    公开(公告)号:US20170313849A1

    公开(公告)日:2017-11-02

    申请号:US15523023

    申请日:2015-10-29

    Abstract: The invention pertains to a fluoroelastomer composition comprising:—at least one fluoroelastomer [perfluoroelastomer (A)], said fluoroelastomer (A) comprising iodine and/or bromine atoms and having a backbone comprising:—recurring units derived from tetrafluoroethylene (TFE);—recurring units derived from at least one perfluorinated monomer selected from the group consisting of:—perfluoroalkylvinylethers complying with formula CF2═CFORf1 in which Rn is a C1-C6 perfluoroalkyl (monomers of this type being referred to, herein after, as PAVE), e.g. —CF3, —C2F5, —C3F7;—perfluoro-oxyalkylvinylethers complying with formula CF2=CFOX0, in which X0 can be (i) a C1-C12 perfluorooxyalkyl having one or more ether groups, e.g. —C2F5—O—CF3; or (ii) a group of formula —CF2ORf2 in which Rf2 is a C1-C6 perfluoroalkyl, e.g. —CF3, —C2F5, —C3F7 (monomers of this type being referred to, herein after, as MOVE);—recurring units derived from vinylidene fluoride (VDF) in an amount of up to 30% by moles, with respect to the total moles of recurring units; and—optionally, recurring units derived from at least one perfluorinated C3-C8 alpha-olefin, in an amount of up to 5% moles;—optionally, recurring units derived from at least one fluorine-free alpha-olefin, in an amount of up to 10% moles;—from 0.5 to 5 weight parts, per 100 parts by weight of said fluoroelastomer (A), of at least one polyunsaturated compound;—from 0.1 to 3 weight parts, per 100 parts by weight of said fluoroelastomer (A), of at least one organic peroxide;—from 0.1 to 3 weight parts, per 100 parts by weight of said fluoroelastomer (A), of at least one organic base [base (B)] selected from the group consisting of: (i) non-aromatic primary amines or amides complying with general formula (B1m) or (B1d): Rbm—[C(0)]t-NH2 (B1m) H2N—[C(O)]t′—Rdm—[C(O)]t″—NH2 (B1d) wherein:—each of t, t′ and t″, equal to or different from each other and at each occurrence is zero or 1;—Rbm is a monovalent hydrocarbon non-aromatic group having 12 to 30 carbon atoms;—Rbm is a divalent hydrocarbon non-aromatic group having 6 to 30 carbon atoms; and (ii) cycloaliphatic secondary or tertiary amines complying with general formula (B2m) or (B2d) wherein:—Cy represents a divalent aliphatic group comprising at least 4 carbon atoms, optionally comprising one or more than one ethylenically unsaturated double bond, and optionally comprising one or more catenary nitrogen atoms, forming a cycle with the nitrogen atom which is connected thereto;—Cy′ represent a trivalent aliphatic group comprising at least 5 carbon atoms, optionally comprising one or more than one ethylenically unsaturated double bond, and optionally comprising one or more catenary nitrogen atoms, forming a cycle with the nitrogen atom which is connected thereto.

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