Maleimide-based copolymer, method for producing same, and resin composition obtained using same
US-2020369813-A1 · Nov 26, 2020 · US
Production method for heat-resistant resin composition
US12427704B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-12427704-B2 |
| Application number | US-202118018000-A |
| Country | US |
| Kind code | B2 |
| Filing date | Sep 22, 2021 |
| Priority date | Sep 29, 2020 |
| Publication date | Sep 30, 2025 |
| Grant date | Sep 30, 2025 |
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- Title
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Abstract
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A method for manufacturing a heat resistant resin composition having superior dispersibility of maleimide-based copolymer, the method including: a melt-kneading step to melt and knead a maleimide-based copolymer (A) and at least one resin (B) selected from the group consisting of ABS resin, ASA resin, AES resin, and SAN resin with an extruder; wherein: a ratio of a melt viscosity of the maleimide-based copolymer (A) with respect to a melt viscosity of the resin (B) obtained with a shear rate of 120/sec and a cylinder temperature of a kneading unit of the extruder is 1.0 or higher and lower than 3.4, is provided.
First claim
Opening claim text (preview).
The invention claimed is: 1. A method for manufacturing a heat resistant resin composition, the method comprising: a melt-kneading step to melt and knead a maleimide-based copolymer (A) and at least one resin (B) selected from the group consisting of ABS resin, ASA resin, AES resin, and SAN resin with an extruder; wherein: a ratio of a melt viscosity of the maleimide-based copolymer (A) with respect to a melt viscosity of the resin (B) obtained with a shear rate of 120/sec and a cylinder temperature of a kneading unit of the extruder is 1.0 or higher and lower than 3.4. 2. The method for manufacturing the heat resistant resin composition of claim 1 , wherein the melt-kneading step is performed under presence of an antioxidant (C). 3. The method for manufacturing the heat resistant resin composition of claim 1 , wherein the extruder is a twin-screw extruder. 4. The method for manufacturing the heat resistant resin composition of claim 3 , wherein a deep groove ratio of a screw of the kneading unit of the twin-screw extruder is 1.55 or higher. 5. The method for manufacturing the heat resistant resin composition of claim 2 , wherein the extruder is a twin-screw extruder. 6. The method for manufacturing the heat resistant resin composition of claim 5 , wherein a deep groove ratio of a screw of the kneading unit of the twin-screw extruder is 1.55 or higher.
Assignees
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Classifications
containing three or more polymers in a blend · CPC title
Stabilised against heat, light or radiation or oxydation · CPC title
Polyimides; Polyester-imides; Polyamide-imides; Polyamide acids or similar polyimide precursors · CPC title
Stabilisers, e.g. against oxydation, light or heat · CPC title
PI, i.e. polyimides or derivatives thereof · CPC title
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- What does patent US12427704B2 cover?
- A method for manufacturing a heat resistant resin composition having superior dispersibility of maleimide-based copolymer, the method including: a melt-kneading step to melt and knead a maleimide-based copolymer (A) and at least one resin (B) selected from the group consisting of ABS resin, ASA resin, AES resin, and SAN resin with an extruder; wherein: a ratio of a melt viscosity of the maleimi…
- Who is the assignee on this patent?
- Denka Company Ltd
- What technology area does this patent fall under?
- Primary CPC classification B29C48/022. Mapped technology areas include Operations & Transport.
- When was this patent published?
- Publication date Tue Sep 30 2025 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 2 related publications on this page (citations in our corpus or others sharing the same primary CPC).