Thermoplastic elastomer compounds exhibiting retained clarity and improved surface structure
US-11952486-B2 · Apr 9, 2024 · US
Thermoplastic acrylic resin composition
US8969474B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-8969474-B2 |
| Application number | US-98919309-A |
| Country | US |
| Kind code | B2 |
| Filing date | Apr 21, 2009 |
| Priority date | Apr 22, 2008 |
| Publication date | Mar 3, 2015 |
| Grant date | Mar 3, 2015 |
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- Title
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Abstract
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Provided is a thermoplastic acrylic resin composition comprising a methacrylic resin (A) and a polyvinyl acetal resin (B) obtained by acetalizing a polyvinyl alcohol resin with an aldehyde having 4 or more carbon atoms and an aldehyde having 3 or less carbon atoms in which the total amount of the vinyl alcohol units acetalized with the aldehyde having 4 or more carbon atoms and the aldehyde having 3 or less carbon atoms is 65 to 85 mol % of all repeating units, and the molar ratio of the vinyl alcohol unit acetalized with the aldehyde having 4 or more carbon atoms to the vinyl alcohol unit acetalized with the aldehyde having 3 or less carbon atoms is from 90/10 to 0/100. Furthermore, provided are an article molded from the thermoplastic acrylic resin composition and a method of producing the thermoplastic acrylic resin composition comprising the steps of mixing a methacrylic resin (A) and a polyvinyl acetal resin (B), increasing the resin temperature to 160° C. or more, and then decreasing the resin temperature to 120° C. or less.
First claim
Opening claim text (preview).
The invention claimed is: 1. A thermoplastic acrylic resin composition, comprising: a methacrylic resin (A) comprising 80 to 99.9% by mass of alkyl methacrylate units and 0.1 to 20% by mass of alkyl acrylate units and having a weight-average molecular weight (Mw) of 40,000 or more; and a polyvinyl acetal resin (B) comprising repeating units represented by formula (1) below:…
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Chemistry & Metallurgy · mapped topic
- C08L33/12Primary
Chemistry & Metallurgy · mapped topic
Chemistry & Metallurgy · mapped topic
Chemistry & Metallurgy · mapped topic
Cross-Sectional Technologies · mapped topic
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Frequently asked questions
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- What does patent US8969474B2 cover?
- Provided is a thermoplastic acrylic resin composition comprising a methacrylic resin (A) and a polyvinyl acetal resin (B) obtained by acetalizing a polyvinyl alcohol resin with an aldehyde having 4 or more carbon atoms and an aldehyde having 3 or less carbon atoms in which the total amount of the vinyl alcohol units acetalized with the aldehyde having 4 or more carbon atoms and the aldehyde hav…
- Who is the assignee on this patent?
- Tokuchi Kazuki, Tsuji Wataru, Moriguchi Nobuhiro, and 2 more
- What technology area does this patent fall under?
- Primary CPC classification C08L33/12. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Mar 03 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).