Liquid crystal polyester resin composition, connector, and method for producing liquid crystal polyester resin composition
US-2015353827-A1 · Dec 10, 2015 · US
Low naphthenic liquid crystalline polymer composition
US8932483B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-8932483-B2 |
| Application number | US-201213674970-A |
| Country | US |
| Kind code | B2 |
| Filing date | Nov 13, 2012 |
| Priority date | Nov 15, 2011 |
| Publication date | Jan 13, 2015 |
| Grant date | Jan 13, 2015 |
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Abstract
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A thermoplastic composition that comprises a low-naphthenic, thermotropic liquid crystalline polymer blended with a flow modifier is provided. The flow modifier is an aromatic carboxylic acid that contains one or more carboxyl functional groups. Without intending to be limited by theory, it is believed that the functional groups can react with the polymer chain to shorten its length and thus reduce melt viscosity. It is also believed that such acids can combine smaller chains of the polymer together after they have been cut during processing. This helps maintain the mechanical properties of the composition even after its melt viscosity has been reduced. As a result of the present invention, the melt viscosity of the thermoplastic composition is generally low enough so that it can readily flow into the cavity of a mold having small dimensions.
First claim
Opening claim text (preview).
What is claimed is: 1. A thermoplastic composition that comprises at least one thermotropic liquid crystalline polymer, wherein the total amount of repeating units in the thermotropic liquid crystalline polymer derived from naphthenic hydroxycarboxylic and/or naphthenic dicarboxylic acids is no more than 15 mol. %, the thermoplastic composition further comprising at least one aromatic carboxylic acid, and further wherein the thermoplastic composition has a melt viscosity of from ab…
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Chemistry & Metallurgy · mapped topic
Chemistry & Metallurgy · mapped topic
Chemistry & Metallurgy · mapped topic
Chemistry & Metallurgy · mapped topic
Chemistry & Metallurgy · mapped topic
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Frequently asked questions
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- What does patent US8932483B2 cover?
- A thermoplastic composition that comprises a low-naphthenic, thermotropic liquid crystalline polymer blended with a flow modifier is provided. The flow modifier is an aromatic carboxylic acid that contains one or more carboxyl functional groups. Without intending to be limited by theory, it is believed that the functional groups can react with the polymer chain to shorten its length and thus re…
- Who is the assignee on this patent?
- Ticona Llc
- What technology area does this patent fall under?
- Primary CPC classification C09K19/54. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Jan 13 2015 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 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).