Methods for improving production in gas phase polymerization
US-12152095-B2 · Nov 26, 2024 · US
Polypropylene resin composition and formed article
US8946331B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-8946331-B2 |
| Application number | US-32556806-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jan 5, 2006 |
| Priority date | Jan 7, 2005 |
| Publication date | Feb 3, 2015 |
| Grant date | Feb 3, 2015 |
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Abstract
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Disclosed is a polypropylene resin composition including: 100 parts by weight of (A) a propylene-based block copolymer including polymer components (I) and (II), wherein the polymer component (I) is a propylene polymer having an intrinsic viscosity [η] I of 0.1-5 dl/g, the polymer component (II) is a propylene polymer comprising propylene units and units of at least one comonomer selected from the group consisting of ethylene and α-olefins having 4-12 carbon atoms and having an intrinsic viscosity [η] II of from 1-20 dl/g and the content of the polymer component (II) is 1-70% by weight; and 0.001-5 parts by weight of (B) a nucleating agent composed of particles having an average particle diameter, as measured by the laser diffraction method, of 0.01-3 mm wherein particles having particle diameters of not less than 10 mm account for less than 5% by weight of all the particles of the nucleating agent.
First claim
Opening claim text (preview).
What is claimed is: 1. A polypropylene resin composition comprising: (A) a propylene-based block copolymer satisfying requirements (a), (b), (c) and (d) defined below, and (B) from 0.01 to 1.0 part by weight, based on 100 parts by weight of (A), of aluminum hydroxy-di-(p-tert-butylbenzoate) particles having an average particle diameter, as measured by the laser diffraction method, of from 0.01 to 3 μm wherein particles having particle diameters of not less than 10 μm account for…
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Chemistry & Metallurgy · mapped topic
Chemistry & Metallurgy · mapped topic
Chemistry & Metallurgy · mapped topic
- C08F210/06Primary
Chemistry & Metallurgy · mapped topic
Chemistry & Metallurgy · mapped topic
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- What does patent US8946331B2 cover?
- Disclosed is a polypropylene resin composition including: 100 parts by weight of (A) a propylene-based block copolymer including polymer components (I) and (II), wherein the polymer component (I) is a propylene polymer having an intrinsic viscosity [η] I of 0.1-5 dl/g, the polymer component (II) is a propylene polymer comprising propylene units and units of at least one comonomer selected from…
- Who is the assignee on this patent?
- Oobayashi Yoshiaki, Watanabe Tsuyoshi, Sumitomo Chemical Co
- What technology area does this patent fall under?
- Primary CPC classification C08F210/06. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Feb 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).