IPC분류정보
국가/구분 |
United States(US) Patent
등록
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국제특허분류(IPC7판) |
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출원번호 |
US-0269615
(2002-10-11)
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발명자
/ 주소 |
- Grootaert, Werner M. A.
- Kolb, Robert E.
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출원인 / 주소 |
- 3M Innovative Properties Company
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인용정보 |
피인용 횟수 :
18 인용 특허 :
14 |
초록
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Compositions comprising a fluoropolymer having interpolymerized units derived from a nitrogen-containing cure site monomer and an amidine-containing curative are provided.Also provided are a method of making a fluoropolymer and fluoropolymer articles containing curable or cured fluoropolymer composi
Compositions comprising a fluoropolymer having interpolymerized units derived from a nitrogen-containing cure site monomer and an amidine-containing curative are provided.Also provided are a method of making a fluoropolymer and fluoropolymer articles containing curable or cured fluoropolymer compositions.
대표청구항
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1. A composition comprising:(a) a fluoropolymer comprising interpolymerized units derived from a nitrogen-containing cure site monomer; and (b) an amidine-containing curative, wherein the curative is a bis-amidine, tris-amidine, or tetra-amidine, or a salt thereof. 2. The composition of claim 1 wher
1. A composition comprising:(a) a fluoropolymer comprising interpolymerized units derived from a nitrogen-containing cure site monomer; and (b) an amidine-containing curative, wherein the curative is a bis-amidine, tris-amidine, or tetra-amidine, or a salt thereof. 2. The composition of claim 1 wherein the curative comprises a compound having the general formula X?Y(?Z)n wherein X is a moiety of Formula I: wherein each R is, independently, H, an optionally substituted alkyl, alkenyl, aryl, alkaryl, or alkenylaryl group, Y is a bond or a linking group, Z is H or a moiety according to Formula I, which may be the same or different than X, and n is an integer from 1 to 3; or a salt thereof, or the precursors of the salt thereof provided separately or as a mixture.3. The composition of claim 1 wherein the curative is a carboxylate salt of an amidine, which optionally is fluorinated or perfluorinated.4. The composition of claim 1 wherein the curative comprises a compound of the formula: wherein Y is selected from a linking group and CX2OCX2, each X is independently H, F, or Cl, each R is independently selected from H, a C1-C8 alkyl, alkenyl, a C6-C15 aryl, alkaryl, or alkenylaryl, and wherein R is optionally substituted.5. The composition of claim 4 wherein each R is independently selected from H, a C1-C6 alkyl and wherein R is optionally substituted.6. The composition of claim 4 wherein each R is H.7. The composition of claim 2 wherein Z is X.8. The composition of claim 1 wherein the curative comprises a compound of the formula: wherein Y is a linking group, and each R is, independently, H, an optionally substituted alkyl, alkenyl, aryl, alkaryl, or alkenylaryl group. 9. The composition of claim 1 wherein the curative is selected from the formula wherein j and k range from 1 to about 12, Y is (CX2OCX2)p, p is 1 to 5, each X is independently H, F, or Cl, each R is independently selected from H, a C1-C8 alkyl, alkenyl, a C6-C15 aryl, alkaryl, or alkenylaryl, and wherein R is optionally substituted, and A is an anion. 10. The composition of claim 1 wherein the curative comprises a compound of the formula: wherein R″ is an optionally substituted alkyl, alkenyl, aryl, alkaryl, or alkenylaryl group, which may be non-fluorinated, partially-fluorinated, or perfluorinated, and each R is, independently, H, an optionally substituted alkyl, alkenyl, aryl, alkaryl, or alkenylaryl group.11. The composition of claim 1 wherein the curative comprises a compound of the formula:wherein each R is an optionally substituted alkyl, alkenyl, aryl, alkaryl, or alkenylaryl group, which may be non-fluorinated, partially non-fluorinated, or perfluorinated, and Y is a linking group.12. The composition of claim 11 wherein Y is selected from (CF2OCF2)m wherein m is an integer from 1 to 10.13. The composition of claim 11 wherein m is 3.14. The composition of claim 1 wherein the fluoropolymer is perfluorinated.15. The composition of claim 1 wherein the fluoropolymer comprises interpolymerized units derived from (i) tetrafluoroethylene, and (ii) a fluorinated comonomer, and optionally (iii) one or more perfluorovinyl ethers.16. The composition of claim 15 wherein the fluorinated comonomer is selected from perfluoroolefins, partially-fluorinated olefins, non-fluorinated olefins, vinylidene fluoride, and combinations thereof.17. A composition according to claim 1 wherein said cure site monomer comprises a nitrile-containing monomer.18. A composition according to claim 17 wherein said cure site monomer is a compound of the formula CF2?CFO(CF2)LCN; CF2?CFO(CF2)uOCF(CF3)CN; CF2?CFO[CF2CF(CF3)O]q(CF2O)yCF(CF3)CN; or 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; perfluoro(8-cyano-5-methyl-3,6-dioxa-1-octene), and CF2?CFO(CF2)5CN.19. A composition according to claim 1 further comprising a filler, optionally selected from fluoropolymer filler, carbon black, and combinations thereof.20. The composition of claim 1 wherein the fluoropolymer is selected from a fluoroelastomer and a fluoroplastic.21. The composition of claim 1 further comprising an additional curative.22. The composition of claim 21 wherein the additional curative is selected from ammonia-generating compounds, substituted triazine derivatives, unsubstituted triazine derivatives, peroxides, bis-aminophenols, bis-amidooximes, and organotin compounds.23. A shaped article comprising the fluoropolymer composition of claim 1.24. The article of claim 23 having a visible light transmission selected from at least about 35%, 40%, 45%, 50%, 55%, 60%, 65%, 70%, 75%, 80%, 85%, 90%, and 95%.25. The article of claim 23 having a compression set value after 70 hours at 250° C. or higher, selected from below about 65%, 60%, 55%, 50%, 45%, 40%, 35%, 30%, 25%, and 20%.26. The composition of claim 1 further comprising a fluoropolymer having interpolymerized units derived from monomers selected from the group consisting of perfluoroolefins, partially-fluorinated olefins, non-fluorinated olefins, vinylidene fluoride, perfluorovinyl ethers, and combinations thereof.27. The composition of claim 26 further comprising a curative material selected from ammonium salts, ammonia-generating compounds, substituted triazine derivatives, unsubstituted triazine derivatives, peroxides, bis-aminophenols, bis-amidooximes, and organotin compounds; and optionally a coagent.28. The composition of claim 27 wherein the coagent is selected from triallyl cyanurate; triallyl isocyanurate; tri(methylallyl)isocyanurate; tris(diallylamine)-s-triazine; triallyl phosphite; N,N-diallyl acrylamide; hexallyl phosphoramide; N,N,N′,N′-tetraalkyl tetraphthalamide; N,N,N′,N′-tetraallyl malonamide; trivinyl isocyanurate; 2,4,6-trivinyl methyltrisiloxane; and tri(5-norbornene-2-methylene)cyanurate.29. The composition of claim 26 wherein the additional fluoropolymer includes interpolymerized units containing a halogen that is capable of participation in a peroxide cure reaction and wherein the additional curative is a peroxide, and optionally further comprising a triallyl cyanurate coagent.30. A method of making a fluoropolymer composition comprising:(c) forming a mixture comprising a composition according to claim 1; (d) shaping the mixture; (e) curing the shaped mixture; and optionally (f) heat aging the cured mixture. 31. The method of claim 30 wherein the curative is an amidine salt.32. The method of claim 31 wherein the precursors to the amidine salt are added to the mixture.
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