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    FLUOROELASTOMER COMPOSITION
    13.
    发明申请
    FLUOROELASTOMER COMPOSITION 有权

    公开(公告)号：US20210380793A1

    公开(公告)日：2021-12-09

    申请号：US17406685

    申请日：2021-08-19

    Applicant: SOLVAY SPECIALTY POLYMERS ITALY S.P.A.

    Inventor： Stefano Bossolo ,  Marco Avataneo ,  Stefano Millefanti ,  Michael J. Cox

    IPC: C08L27/18 ,  C08K5/136 ,  C08K5/28

    Abstract: The invention pertains to a composition based on a fluoroelastomer comprising nitrile or carboxylate-type cure sites and including a curing agent and a Br-containing marker having reactivity towards the said cure-sites, which can be cured so as to deliver cured parts maintaining chemically bound bromine atoms; this material, when submitted to wear/damage would hence release Br-containing contaminants, which can easily spotted via notably an on-line mass spectrometer, so as to monitor and anticipate critical failures of sealing materials based there upon.

    Method of manufacturing fluoroelastomers
    14.
    发明授权
    Method of manufacturing fluoroelastomers 有权

    公开(公告)号：US10882935B2

    公开(公告)日：2021-01-05

    申请号：US16061965

    申请日：2016-12-14

    Applicant: SOLVAY SPECIALTY POLYMERS ITALY S.P.A.

    Inventor： Marco Dossi ,  Marco Avataneo

    IPC: C08F214/26 ,  C08F259/08 ,  C08F2/38 ,  C08F2/24 ,  C08F214/22

    Abstract: The invention pertains to a method for manufacturing a fluoroelastomer (A), wherein fluoroelastomer (A) is a (per)fluoroelastomer, where such method includes (a): polymerizing in an aqueous emulsion in the presence of a surfactant by feeding the following ingredients into a first reactor: (i) a monomer mixture (M1) comprising at least one monomer (F), wherein monomer (F) is a fluoromonomer, (ii) at least one iodinated and/or brominated chain-transfer agent(s), (iii) at least one branching agent possessing at least two ethylenic unsaturations; and (iv) at least one radical initiator, so as to obtain a pre-polymer latex (P); (b): recovering latex (P) from the first reactor and storing the recovered latex (P) in a storage tank; (c): feeding the recovered latex (P) from the storage tank into a second reactor; (d): polymerizing in the second reactor at least a second monomer mixture (M2) comprising at least one monomer (F) in the presence of a radical initiator, so as to obtain a final latex (F); and (d): recovering (per)fluoroelastomer from latex (F).

    Perfluoroelastomer composition
    17.
    发明授权
    Perfluoroelastomer composition 有权

    公开(公告)号：US11459429B2

    公开(公告)日：2022-10-04

    申请号：US15327860

    申请日：2015-07-16

    Applicant: SOLVAY SPECIALTY POLYMERS ITALY S.P.A.

    Inventor： Matteo Fantoni ,  Stefano Arrigoni ,  Stefano Bossolo ,  Marco Avataneo

    IPC: C08J3/24 ,  C08K5/14 ,  C08K5/20 ,  C08K5/17 ,  C08F214/26 ,  C08K5/3465

    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.

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