Aqueous polymerization of perfluoromonomer using hydrocarbon surfactant
US-2017073435-A1 · Mar 16, 2017 · US
Method for producing purified polytetrafluoroethylene aqueous dispersion liquid, method for producing modified polytetrafluoroethylene powder, method for producing polytetrafluoroethylene molded body, and composition
US12540203B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-12540203-B2 |
| Application number | US-202318387843-A |
| Country | US |
| Kind code | B2 |
| Filing date | Nov 7, 2023 |
| Priority date | Aug 10, 2017 |
| Publication date | Feb 3, 2026 |
| Grant date | Feb 3, 2026 |
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- Title
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- Abstract
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Abstract
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A composition containing polytetrafluoroethylene and substantially free from a compound represented by Formula (3): (H—(CF 2 ) 8 —SO 3 ) q M 2 wherein M 2 is H, a metal atom, NR 5 4 (where R 5 s may be the same as or different from each other and are each H or an organic group having 1 to 10 carbon atoms), an imidazolium optionally having a substituent, a pyridinium optionally having a substituent, or a phosphonium optionally having a substituent, and q is 1 or 2. Also disclosed is a molded boy including the composition.
First claim
Opening claim text (preview).
What is claimed is: 1 . A composition comprising polytetrafluoroethylene and substantially free from a compound represented by Formula (3) below: (H—(CF 2 ) 8 —SO 3 ) q M 2 Formula (3): wherein M 2 is H, a metal atom, NR 5 4 (where R 5 s may be the same as or different from each other and are each H or an organic group having 1 to 10 carbon atoms), an imidazolium optionally having a substituent, a pyridinium optionally having a substituent, or a phosphonium optionally having a substituent, and q is 1 or 2, and wherein the composition further includes a compound represented by Formula (4) below in an amount up to 1000 ppb with respect to polytetrafluoroethylene; and a nonionic surfactant in an amount of 1%/polytetrafluoroethylene or more: (H—(CF 2 ) 7 —COO) p M 1 Formula (4): wherein M 1 is H, a metal atom, NR 5 4 (where R 5 s may be the same as or different from each other and are each H or an organic group having 1 to 10 carbon atoms), an imidazolium optionally having a substituent, a pyridinium optionally having a substituent, or a phosphonium optionally having a substituent, and p is 1 or 2. 2 . A composition comprising polytetrafluoroethylene and substantially free from a compound represented by Formula (3) below: (H—(CF 2 ) 8 —SO 3 ) q M 2 Formula (3): wherein M 2 is H, a metal atom, NR 5 4 (where R 5 s may be the same as or different from each other and are each H or an organic group having 1 to 10 carbon atoms), an imidazolium optionally having a substituent, a pyridinium optionally having a substituent, or a phosphonium optionally having a substituent, and q is 1 or 2, and wherein the composition further includes at least any one of a compound represented by Formula (4) below in an amount up to 1000 ppb with respect to polytetrafluoroethylene and a compound represented by Formula (4′) below in an amount up to 1000 ppb with respect to polytetrafluoroethylene, and a nonionic surfactant in an amount of 1%/polytetrafluoroethylene or more: (H—(CF 2 ) 7 —COO) p M 1 Formula (4): wherein M 1 is H, a metal atom, NR 5 4 (where R 5 s may be the same as or different from each other and are each H or an organic group having 1 to 10 carbon atoms), an imidazolium optionally having a substituent, a pyridinium optionally having a substituent, or a phosphonium optionally having a substituent, and p is 1 or 2; and (H—(CF 2 ) 8 —COO) p M 1 Formula (4′): wherein M 1 is H, a metal atom, NR 5 4 (where R 5 s may be the same as or different from each other and are each H or an organic group having 1 to 10 carbon atoms), an imidazolium optionally having a substituent, a pyridinium optionally having a substituent, or a phosphonium optionally having a substituent, and p is 1 or 2. 3 . A composition comprising polytetrafluoroethylene and substantially free from a compound represented by Formula (3) below: (H—(CF 2 ) 8 —SO 3 ) q M 2 Formula (3): wherein M 2 is H, a metal atom, NR 5 4 (where R 5 s may be the same as or different from each other and are each H or an organic group having 1 to 10 carbon atoms), an imidazolium optionally having a substituent, a pyridinium optionally having a substituent, or a phosphonium optionally having a substituent, and q is 1 or 2, and wherein the composition further includes a compound represented by Formula (5) below in an amount up to 1000 ppb with respect to polytetrafluoroethylene; and a nonionic surfactant in an amount of 1%/polytetrafluoroethylene or more: (H—(CF 2 ) 13 —COO) p M 1 Formula (5): wherein M 1 is H, a metal atom, NR 5 4 (where R 5 s may be the same as or different from each other and are each H or an organic group having 1 to 10 carbon atoms), an imidazolium optionally having a substituent, a pyridinium optionally having a substituent, or a phosphonium optionally having a substituent, and p is 1 or 2. 4 . A composition comprising polytetrafluoroethylene and substantially free from a compound represented by Formula (3) below: (H—(CF 2 ) 8 —SO 3 ) q M 2 Formula (3): wherein M 2 is H, a metal atom, NR 5 4 (where R 5 s may be the same as or different from each other and are each H or an organic group having 1 to 10 carbon atoms), an imidazolium optionally having a substituent, a pyridinium optionally having a substituent, or a phosphonium optionally having a substituent, and q is 1 or 2, and wherein the composition further includes at least any one of a compound represented by Formula (5) below in an amount up to 1000 ppb with respect to polytetrafluoroethylene and a compound represented by Formula (5′) below in an amount up to 1000 ppb with respect to polytetrafluoroethylene, and a nonionic surfactant in an amount of 1%/polytetrafluoroethylene or more: (H—(CF 2 ) 13 —COO) p M 1 Formula (5): wherein M 1 is H, a metal atom, NR 5 4 (where R 5 s may be the same as or different from each other and are each H or an organic group having 1 to 10 carbon atoms), an imidazolium optionally having a substituent, a pyridinium optionally having a substituent, or a phosphonium optionally having a substituent, and p is 1 or 2; and (H—(CF 2 ) 14 —COO) p M 1 Formula (5′): wherein M 1 is H, a metal atom, NR 5 4 (where R 5 s may be the same as or different from each other and are each H or an organic group having 1 to 10 carbon atoms), an imidazolium optionally having a substituent, a pyridinium optionally having a substituent, or a phosphonium optionally having a substituent, and p is 1 or 2. 5 . The composition according to claim 1 , being an aqueous dispersion. 6 . A composition comprising polytetrafluoroethylene and substantially free from a compound represented by Formula (3) below: (H—(CF 2 ) 8 —SO 3 ) q M 2 Formula (3): wherein M 2 is H, a metal atom, NR 5 4 (where R 5 s may be the same as or different from each other and are each H or an organic group having 1 to 10 carbon atoms), an imidazolium optionally having a substituent, a pyridinium optionally having a substituent, or a phosphonium optionally having a substituent, and q is 1 or 2, wherein the composition further includes a compound represented by Formula (4) below in an amount up to 1000 ppb with respect to polytetrafluoroethylene: (H—(CF 2 ) 7 —COO) p M 1 Formula (4): wherein M 1 is H, a metal atom, NR 5 4 (where R 5 s may be the same as or different from each other and are each H or an organic group having 1 to 10 carbon atoms), an imidazolium optionally having a substituent, a pyridinium optionally having a substituent, or a phosphonium optionally having a substituent, and p is 1 or 2. 7 . A composition comprising polytetrafluoroethylene and substantially free from a compound represented by Formula (3) below: (H—(CF 2 ) 8 —SO 3 ) q M 2 Formula (3): wherein M 2 is H, a metal atom, NR 5 4 (where R 5 s may be the same as or different from each other and are each H or an organic group having 1 to 10 carbon atoms), an imidazolium optionally having a substituent, a pyridinium optionally having a substituent, or a phosphonium optionally having a substituent, and q is 1 or 2, wherein the composition further includes at least any one of a compound represented by Formula (4) below in an amount up to 1000 ppb with respect to polytetrafluoroethylene and a compound represented by Formula (4′) below in an amount up to 1000 ppb with respect to polytetrafluoroethylene: (H—(CF 2 ) 7 —COO) p M 1 Formula (4): wherein M 1 is H, a metal atom, NR 5 4 (where R 5 s may be the same as or different from each other and are each H or an organic group having 1 to 10 carbon atoms), an imidazolium optionally having a substituent, a pyridinium optionally having a substituent, or a phosphonium optionally having a substituent, and p is 1 or 2; and (H
Assignees
Inventors
Classifications
Treatment of polymer suspensions {(C08F6/001, C08F6/006, C08F6/008, C08F6/02, C08F6/04 take precedence)} · CPC title
Purification · CPC title
- C08F6/06Primary
Treatment of polymer solutions {(C08F6/001, C08F6/006, C08F6/008, C08F6/02, C08F6/04 take precedence)} · CPC title
containing fluorine atoms · CPC title
Monomers containing only one unsaturated aliphatic radical · CPC title
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- What does patent US12540203B2 cover?
- A composition containing polytetrafluoroethylene and substantially free from a compound represented by Formula (3): (H—(CF 2 ) 8 —SO 3 ) q M 2 wherein M 2 is H, a metal atom, NR 5 4 (where R 5 s may be the same as or different from each other and are each H or an organic group having 1 to 10 carbon atoms), an imidazolium optionally having a substituent, a pyridinium optionally having …
- Who is the assignee on this patent?
- Daikin Ind Ltd
- What technology area does this patent fall under?
- Primary CPC classification C08F6/06. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Feb 03 2026 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 6 related publications on this page (citations in our corpus or others sharing the same primary CPC).