Laminate and copolymer
US-2019210339-A1 · Jul 11, 2019 · US
Fluorine-containing resin composition and method for production thereof
US12180358B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-12180358-B2 |
| Application number | US-201917256872-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jun 24, 2019 |
| Priority date | Jul 2, 2018 |
| Publication date | Dec 31, 2024 |
| Grant date | Dec 31, 2024 |
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Abstract
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Provided are a fluororesin-containing composition having significantly improved fluidity and a method for producing the same. The fluororesin-containing composition contains 99.99 to 97% by mass of a fluororesin having a melting point of 205° C. to 225° C. and 0.01 to 2% by mass of a thermotropic liquid crystal polymer. The method for producing the fluororesin-containing composition includes kneading polychlorotrifluoroethylene and a thermotropic liquid crystal polymer at 285° C. to 320° C.
First claim
Opening claim text (preview).
The invention claimed is: 1. A fluororesin-containing composition consisting of: 99.5 to 99.99% by mass of a fluororesin having a melting point of 205° C. to 225° C.; and 0.01 to 0.5% by mass of a thermotropic liquid crystal polymer, wherein the thermotropic liquid crystal polymer is a copolymer of para-hydroxybenzoic acid and ethylene terephthalate, and the thermotropic liquid crystal polymer contains the para-hydroxybenzoic acid in an amount of 20 to 80 mol %. 2. The fluororesin-containing composition according to claim 1 , wherein the fluororesin is polychlorotrifluoroethylene. 3. The fluororesin-containing composition according to claim 1 , wherein the fluororesin is polychlorotrifluoroethylene, and the polychlorotrifluoroethylene has a melt flow rate MFR at 280° C. of 0.1 to 1.0 g/10 min. 4. The fluororesin-containing composition according to claim 1 , wherein the thermotropic liquid crystal polymer has a liquid crystal transition starting temperature of 200° C. to 260° C. 5. A method for producing the fluororesin-containing composition according to claim 1 , comprising kneading the fluororesin and the thermotropic liquid crystal polymer at 285° C. to 320° C., wherein the fluororesin is polychlorotrifluoroethylene. 6. A fluororesin-containing composition comprising 99.5% by mass or more of polychlorotrifluoroethylene based on 100% by mass of a total of the fluorineresin-containing composition and 0.1 to 0.5% by mass of a thermotropic liquid crystal based on 100% by mass of the total of the fluorineresin-containing composition, and having a melt flow rate MFR at 280° C. of 3 to 40 g/10 min, and wherein the thermotropic liquid crystal polymer is a copolymer of para-hydroxybenzoic acid and ethylene terephthalate, and the thermotropic liquid crystal polymer contains the para-hydroxybenzoic acid in an amount of 20 to 80 mol %.
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Classifications
characterised by physical features, e.g. anisotropy, viscosity or electrical conductivity (liquid crystal materials or compositions C09K19/00) · CPC title
Polyesters derived from dicarboxylic acids and dihydroxy compounds (C08L67/06 takes precedence) · CPC title
Polyesters derived from hydroxy carboxylic acids, e.g. lactones (C08J2467/06 takes precedence) · CPC title
containing fluorine atoms · CPC title
Manufacture of films or sheets · CPC title
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- What does patent US12180358B2 cover?
- Provided are a fluororesin-containing composition having significantly improved fluidity and a method for producing the same. The fluororesin-containing composition contains 99.99 to 97% by mass of a fluororesin having a melting point of 205° C. to 225° C. and 0.01 to 2% by mass of a thermotropic liquid crystal polymer. The method for producing the fluororesin-containing composition includes kn…
- Who is the assignee on this patent?
- Univ Tsinghua, Daikin Ind Ltd
- What technology area does this patent fall under?
- Primary CPC classification C08L27/12. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Dec 31 2024 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 2 related publications on this page (citations in our corpus or others sharing the same primary CPC).