Process for making crosslinked cable insulation using high melt strength ethylene-based polymer made in a tubular reactor and optionally modified with a branching agent
US-11912852-B2 · Feb 27, 2024 · US
Belt
US9624372B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9624372-B2 |
| Application number | US-201214007818-A |
| Country | US |
| Kind code | B2 |
| Filing date | Mar 29, 2012 |
| Priority date | Mar 31, 2011 |
| Publication date | Apr 18, 2017 |
| Grant date | Apr 18, 2017 |
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- Title
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- Abstract
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Abstract
Official abstract text for this publication.
In the belt according to the present invention, the whole or a part of a belt body is formed from a thermoplastic resin composition (C) comprising a thermoplastic resin (A) and a modified ethylene copolymer (B) dispersed and contained therein. The modified ethylene copolymer (B) is preferably a copolymer, modified with an unsaturated carboxylic acid or a derivative thereof, of ethylene with at least one monomer component selected from (i) olefin components except for ethylene, (ii) diene components and (iii) ester components having an ethylenically unsaturated group. The belt according to the present invention hardly causes abrasion, damage, cracks, breakage and the like on the belt body and is remarkably excellent in durability, even if the belt is used at a high load for a long time.
First claim
Opening claim text (preview).
The invention claimed is: 1. A belt, excluding toothed belts, wherein the whole or a part of a belt body is formed from a thermoplastic resin composition (C) comprising a thermoplastic resin (A) and a modified ethylene copolymer (B), and obtained by dispersing the modified ethylene copolymer (B) into the thermoplastic resin (A), wherein the thermoplastic resin (A) is at least one selected from the group consisting of polyacetal resins and polyamide-based thermoplastic elastomers, wherein a weight proportion [(B)/(A)] of the modified ethylene copolymer (B) to the thermoplastic resin (A) is in the range of 0.1/99.9 to 30/70, and the thermoplastic resin (A) and the modified ethylene copolymer (B) form a continuous phase and a disperse phase, respectively, in the thermoplastic resin composition (C), wherein the modified ethylene copolymer (B) in the thermoplastic resin composition (C) has an average dispersed particle aspect ratio of 1 to 3.5 and an average dispersed particle diameter of not more than 3 μm. 2. The belt according to claim 1 , wherein the modified ethylene copolymer (B) is a copolymer modified with an unsaturated carboxylic acid or a derivative thereof, the copolymer being a copolymer of ethylene with at least one monomer component selected from the group consisting of (i) olefin components except for ethylene, (ii) diene components and (iii) ester components having an ethylenically unsaturated group. 3. The belt according to claim 1 , wherein the modified ethylene copolymer (B) is an ethylene-propylene-diene copolymerized rubber modified with an unsaturated carboxylic acid or a derivative thereof. 4. The belt according to claim 1 , wherein the thermoplastic resin composition (C) has a hardness (JIS K6253, durometer type A) of not less than 60. 5. The belt according to claim 2 , wherein the thermoplastic resin composition (C) has a hardness (JIS K6253, durometer type A) of not less than 60.
Assignees
Inventors
Classifications
Tyres · CPC title
Polyamides derived from polyamines and polycarboxylic acids (C08L77/10 takes precedence) · CPC title
- C08L23/26Primary
modified by chemical after-treatment (saponified copolymers C08L23/0861; unsaturated acid salts C08L23/0876) · CPC title
Polyethers containing oxyalkylene groups having four carbon atoms in the alkylene group · CPC title
Soles · CPC title
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Frequently asked questions
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- What does patent US9624372B2 cover?
- In the belt according to the present invention, the whole or a part of a belt body is formed from a thermoplastic resin composition (C) comprising a thermoplastic resin (A) and a modified ethylene copolymer (B) dispersed and contained therein. The modified ethylene copolymer (B) is preferably a copolymer, modified with an unsaturated carboxylic acid or a derivative thereof, of ethylene with at …
- Who is the assignee on this patent?
- Yoshida Takahiko, Shimizu Shoji, Matsumoto Akihiko, and 1 more
- What technology area does this patent fall under?
- Primary CPC classification C08L23/26. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Apr 18 2017 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).