Method for preparing main chain scission-type polysilyl (meth)acrylate resin and application thereof
US-2016185913-A1 · Jun 30, 2016 · US
Copolymer, and molded article
US10287380B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10287380-B2 |
| Application number | US-201515111386-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jan 7, 2015 |
| Priority date | Jan 14, 2014 |
| Publication date | May 14, 2019 |
| Grant date | May 14, 2019 |
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- Title
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Abstract
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Provided are a break-resistant copolymer having high transparency and heat resistance and also having a high tensile strain at break, and a molded article. A copolymer contains 80% by mass to 98% by mass of structural units derived from a methacrylic ester monomer and 2% to 10% by mass of ester structural units derived from a cyclic ketene acetal monomer. The copolymer has a weight average molecular weight of 80,000 or more and a molecular weight distribution of 1.75 to 3.80.
First claim
Opening claim text (preview).
The invention claimed is: 1. A melt molded article comprising a copolymer comprising: 80% by mass to 98% by mass of structural units derived from a methacrylic ester monomer; and 2% to 10% by mass of ester structural units derived from a cyclic ketene acetal monomer, the copolymer having a weight average molecular weight of 80,000 or more and a molecular weight distribution of 1.75 to 3.80, and wherein the methacrylic ester monomer is methyl methacrylate, wherein the melt molded article has a yield point when performing a tensile test and wherein the copolymer has a glass transition temperature of from 70 to 180° C. 2. The melt molded article according to claim 1 , wherein a polymer resulting from methanolysis of all the ester structural units derived from a cyclic ketene acetal monomer in the copolymer have a molecular weight distribution of 2.0 or less. 3. A light guide film comprising the melt molded article according to claim 1 . 4. A decorative film comprising the melt molded article according to claim 1 . 5. A polarizer protective film comprising the melt molded article according to claim 1 . 6. The melt molded article according to claim 1 , wherein said melt molded article has a tensile strain at break of 8.4% to 32%.
Assignees
Inventors
Classifications
Homopolymers or copolymers of methyl methacrylate · CPC title
Polyesters prepared from ketenes · CPC title
Protective coatings, e.g. hard coatings · CPC title
in the form of a thin sheet or foil, e.g. Polaroid · CPC title
Homopolymers or copolymers of methyl methacrylate · CPC title
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- What does patent US10287380B2 cover?
- Provided are a break-resistant copolymer having high transparency and heat resistance and also having a high tensile strain at break, and a molded article. A copolymer contains 80% by mass to 98% by mass of structural units derived from a methacrylic ester monomer and 2% to 10% by mass of ester structural units derived from a cyclic ketene acetal monomer. The copolymer has a weight averag…
- Who is the assignee on this patent?
- Kuraray Co
- What technology area does this patent fall under?
- Primary CPC classification C08F220/18. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue May 14 2019 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 1 related publication on this page (citations in our corpus or others sharing the same primary CPC).