IPC분류정보
국가/구분 |
United States(US) Patent
등록
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국제특허분류(IPC7판) |
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출원번호 |
US-0367400
(2003-02-14)
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발명자
/ 주소 |
- Grootaert, Werner M. A.
- Adair, Eric W.
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출원인 / 주소 |
- 3M Innovative Properties Company
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인용정보 |
피인용 횟수 :
6 인용 특허 :
59 |
초록
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Provided is a composition comprising a fluoropolymer comprising interpolymerized units derived from a nitrile cure site monomer, and an amino-substituted aromatic curative compound having at least one substituent other than hydrogen, wherein the net effect of the substituent(s) is not electron withd
Provided is a composition comprising a fluoropolymer comprising interpolymerized units derived from a nitrile cure site monomer, and an amino-substituted aromatic curative compound having at least one substituent other than hydrogen, wherein the net effect of the substituent(s) is not electron withdrawing, the curative has a pKa above about 12, the compound may contain one or more heteroatom(s) provided that no heteroatom directly bonded to a hydrogen is in the position ortho to the amino group, and one or more substituents may together form a ring, which ring may be aromatic and may include one or more heteroatoms(s). Also provided are the reaction products of the fluoropolymer and the curative described, cured articles, and a method of making the fluoropolymer compositions and articles.
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 aromatic curative compound having an NH2 substituent and at least one additional substituent other than hydrogen, wherein the net effect of the additiona
1. A composition comprising:(a) a fluoropolymer comprising interpolymerized units derived from a nitrogen-containing cure site monomer; and (b) an aromatic curative compound having an NH2 substituent and at least one additional substituent other than hydrogen, wherein the net effect of the additional substituent(s) is not electron withdrawing, the curative has a pKa above about 12, the compound may contain one or more heteroatom(s) provided that no heteroatom directly bonded to a hydrogen is in the position ortho to the NH2 substituent, and one or more of the additional substituents may together form a ring, which ring may be aromatic and may include one or more heteroatom(s). 2. The composition according to 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.3. The composition of claim 1 wherein the fluoropolymer is perfluorinated.4. The composition of claim 1 wherein the fluoropolymer comprises interpolymerized units derived from tetrafluoroethylene, and one or more perfluorovinyl ethers.5. The composition of claim 1 wherein the nitrogen-containing cure site monomer is a nitrile cure site monomer.6. The composition of claim 1 wherein the fluoropolymer is derived from interpolymerized units consisting essentially of one or more perfluorolefin(s), one or more perfluorovinylether(s), and a nitrile-containing cure site monomer.7. The composition of claim 1 wherein the curative compound contains a heteroatom directly bonded to an R group in the position ortho to the NH2 substituent, wherein R is an alkyl, alkenyl, aryl, or combination thereof, which may be cyclic, and which may contain a heteroatom.8. The composition of claim 7 wherein the heteroatom is nitrogen, which is bonded to two R groups.9. The composition of claim 7 wherein the R group is a C1-C5 alkyl and the heteroatom is oxygen.10. The composition of claim 7 wherein the heteroatom is nitrogen, which nitrogen is bonded to two R groups, each R independently a C1-C5 alkyl.11. The composition of claim 1 wherein the curative is selected from methoxy-substituted mono- and bis- amino-substituted aromatic compounds, alkoxy-substituted mono- and bis- amino-substituted aromatic compounds, dialkyl amino-substituted mono- and bis- amino-substituted aromatic compounds, thioalkoxy-substituted mono- and bis- amino-substituted aromatic compounds, and combinations thereof.12. The composition of claim 1 wherein the curative is selected from amino-substituted napthalenes, amino-substituted anthracenes, amino-substituted pyridines, amino-substituted pyrimidines, amino-substituted melamines, amino-substituted quinolines, amino-substituted furans, amino-substituted pyrroles, amino-substituted oxazoles, amino-substituted imidazoles, amino-substituted thiophenes, amino-substituted triazines, amino-substituted azulenes, amino-substituted benzimidazoles, and combinations thereof.13. The composition of claim 1 wherein the curative is selected from o-anisidine, p-anisidine, m-anisidine, 4″,4′″-(hexafluoroisopropylidene)-bis(4-phenoxyaniline), 4-phenoxyaniline, 3,4,5-trimethoxyaniline, 2,2-bis(4-aminophenyl) hexafluoropropane, a 4-amino-2, 6-dichlorophenoxide salt, and combinations thereof.14. The reaction product of parts (a) and (b) of claim 1.15. An article comprising the composition of claim 1.16. A method of making a fluoropolymer composition comprising:(a) providing a fluoropolymer comprising interpolymerized units derived from a nitrile cure site monomer, (b) providing an aromatic curative compound having an NH2 substituent and at least one additional substituent other than hydrogen, said additional substituent(s) not including a heteroatom that is directly bonded to a hydrogen and in the position ortho to the NH2 substituent, wherein the net effect of the additional substituent(s) is not electron withdrawing, the curative has a pKa above about 12, the compound may contain one or more heteroatoms(s), and one or more of the additional substituents may together form a ring, which ring may be aromatic and may include one or more heteroatom(s); and (c) blending the fluoropolymer with the curative. 17. The method of claim 16 further comprising shaping the mixture; and curing the shaped mixture.18. The method of claim 17 further comprising post-curing and optionally heat aging the cured mixture.
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