Fluoropolymer coagulation method and composition
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
C08F-216/12
C08F-216/00
출원번호
US-0025290
(2004-12-29)
등록번호
US-7304115
(2007-12-04)
발명자
/ 주소
Van Gool,Guy
Verschuere,Alain
Grootaert,Werner M. A.
출원인 / 주소
3M Innovative Properties Company
인용정보
피인용 횟수 :
0인용 특허 :
77
초록▼
Provided is a method of manufacturing a perhalogenated elastomer comprising using an onium compound to coagulate a latex comprising polymer particles, the polymer particles consisting essentially of interpolymerized units of one or more perhalogenated comonomer(s) and at least one cure site monomer,
Provided is a method of manufacturing a perhalogenated elastomer comprising using an onium compound to coagulate a latex comprising polymer particles, the polymer particles consisting essentially of interpolymerized units of one or more perhalogenated comonomer(s) and at least one cure site monomer, wherein the coagulation is performed essentially free of metal ions and metal salts. Also provided is an elastomeric composition comprising a curable perhalogenated elastomer comprising interpolymerized units derived from a nitrogen-containing cure site monomer and coagulated with an onium compound, wherein the elastomer is capable of curing without adding further components and wherein the composition is essentially free of metal ions and metal salts. Also provided are fluoropolymer articles and methods of making fluoropolymer compositions and articles.
대표청구항▼
We claim: 1. A method of manufacturing a perhalogenated polymer comprising coagulating a latex comprising polymer particles using an onium compound as a coagulating agent, the polymer particles consisting essentially of interpolymerized units of one or more perhalogenated comonomer(s) and at least
We claim: 1. A method of manufacturing a perhalogenated polymer comprising coagulating a latex comprising polymer particles using an onium compound as a coagulating agent, the polymer particles consisting essentially of interpolymerized units of one or more perhalogenated comonomer(s) and at least one cure site monomer, wherein the coagulation is performed essentially free of metal ions or metal salts, optionally wherein the latex is prepared in a system substantially free of fluorinated emulsifier. 2. The method of claim 1 further comprising washing the polymer; and optionally drying the polymer. 3. The method of claim 1 wherein the onium compound has the formula: description="In-line Formulae" end="lead"RkQ(+)X(-)description="In-line Formulae" end="tail" wherein each R is, independently, hydrogen or a substituted or unsubstituted C1-C20 alkyl, aryl, aralkyl, or alkenyl group, Q is N, P, S, As, Sb; k is one more than the valence of Q; and X is OH, Br, Cl, HCOO, R'COO or OR' wherein R' is a C1-C10 alkyl, which may be fluorinated or nonfluorinated. 4. The method of claim 1 wherein the onium compound is selected from ammoniums, phosphoniums, and sulfoniums. 5. The method of claim 1 wherein the onium compound is selected from a tetraalkylonium hydroxide, a tetraalkylonium alkoxide, a tetraalkylonium carboxylate, and a tetrabutylphosphonium hydroxide, wherein each alkyl group in the tetraalkylonium is independently C1-C10. 6. The method of claim 1 wherein the latex is prepared by polymerizing one or more perfluorinated comonomer(s) together with at least one cure site monomer with a fluorinated emulsifier and an initiator, optionally wherein the initiator comprises ammonium persulfate. 7. The method of claim 6 wherein polymerizing is carried out in an aqueous medium. 8. The method of claim 1 wherein cure site monomer is selected from a nitrogen-containing cure site monomer, a nitrile-containing cure site monomer, or a halogenated cure site monomer. 9. The method of claim 1 wherein the polymer comprises a nitrogen-containing cure site monomer and the polymer is capable of curing without adding further components. 10. The method of claim 1 further comprising drying the polymer, and shaping the polymer, and optionally curing the dried, shaped polymer, optionally wherein shaping forms a sheet, hose, gasket, or O-ring. 11. The method of claim 10 further comprising blending a curative with the perfluoropolymer, optionally wherein the curative is selected from amidine salts, peroxides, ammonium salts, ammonia-generating compounds, substituted triazine derivatives, unsubstituted triazine derivatives, peroxides, bis-aminophenols, bis-amidooximes, and organotin compounds. 12. The method of claim 1 wherein the perhalogenated polymer includes below about 10,000 parts per billion metal ions and metal salts. 13. The method of claim 1 wherein the perhalogenated polymer includes below about 1000 parts per billion metal ions and metal salts. 14. The method of claim 1 wherein the cure site monomer is a compound selected from: CF2═CFO(CF2)LCN; CF2═CFO(CF2)uOCF(CF3)CN; CF2═CFO(CF2)5CN; CF2═CFO[CF2CF(CF3)O]q (CF2O)yCF(CF3)CN; CF2═CF[OCF2CF(CF3)]rO(CF2 )tCN; wherein L=2-12; q=0-4; r=1-2; y=0-6; t=1-4, and u=2-6; and perfluoro(8-cyano-5-methyl-3,6-dioxa-1-octene).
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이 특허에 인용된 특허 (77)
Saito Satoru (Ibaraki JPX) Tatsu Haruyoshi (Ibaraki JPX) Solomonovich ; deceased Lev (late of Moscow RUX by Elena N. German ; heiress ) Vilovich Ziefman Y. (Moscow RUX) Anatol\evich Postovoi S. (Mosc, Bisamidoxime compound, process for preparing the same and a fluorine-containing elastomer composition comprising the sam.
Coggio William D. (Woodbury MN) Arren Dirk H. C. (Borsbeek BEX) Parker Douglas S. (Afton MN) Worm Allan T. (North St. Paul MN), Fluorinated onium salts, curable compositions containing same, and method of curing using same.
Schulz Jay F. ; Moore George G. I. ; Schwertfeger Werner,DEX ; Hintzer Klaus ; Qiu Zai-Ming ; Guerra Miguel A. ; Hare Erik D. ; Worm Allan T., Fluorine containing allylethers and higher homologs.
Worm Allan T. ; Moore George G. I. ; Guerra Miguel A. ; Schwertfeger Werner,DEX ; Hintzer Klaus ; Qiu Zai-Ming ; Hare Erik D., Fluorine containing vinyl ethers.
Grootaert Werner M. A. (Oakdale MN) Kolb Robert E. (St. Paul MN) Millet George H. (Grant Township ; Washington County MN), Fluoroelastomer composition with improved bonding properties.
Moore Albert L. (Wilmington DE) Stewart ; Jr. Clare A. (Wilmington DE) Swerlick Isadore (Wilmington DE), Fluoropolymer hexafluoropropene, tetrafluorethene and 1,1-difluoroethene.
Worm Allan T. ; Veretennikov Nikolai Vladimirovich,RUX ; Volkova Margarita Alekseevna,RUX ; Sokolov Sergey Vasilievich,RUX, Low temperature fluorocarbon elastomers.
Novak Charles T. (Woodbury MN) Nelson Paul N. (Eagan MN) Nam Sehyun (Woodbury MN) DeMoully William (Maplewood MN) Goebel Kenneth D. (St. Paul MN), Polymer blend composition of fluorinated elastomers, thermoplastic polymers and thermoplastics elastomers.
Farnham William Brown (Hockessin DE) Feiring Andrew Edward (Wilmington DE) Smart Bruce Edmund (Wilmington DE) Wheland Robert Clayton (Wilmington DE), Process for making fluoropolymers.
Moggi Giovanni (Milan ITX) Mancini Livio (Peschiera Borromeo ITX), Vulcanizable compositions based on copolymers of vinylidene fluoride and containing vulcanization accelerators which are.
Moggi Giovanni (Milan ITX) Cirillo Gianna (Genova ITX), Vulcanizable compositions of fluoroelastomers having improved self-lubricating properties and a fast cure rate.
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