Precursor for polyimide and use thereof
US-11319410-B2 · May 3, 2022 · US
Modified bismaleimide resin and preparation method thereof
US2025092200A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2025092200-A1 |
| Application number | US-202318503184-A |
| Country | US |
| Kind code | A1 |
| Filing date | Nov 7, 2023 |
| Priority date | Sep 19, 2023 |
| Publication date | Mar 20, 2025 |
| Grant date | — |
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- Title
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Abstract
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A preparation method of a modified bismaleimide resin includes the following steps. Maleic anhydride is mixed with a bisamine compound to obtain a corresponding mixture. The mixture is heated. The bisamine compound has a main chain structure or fragment represented by Formula A, Formula B, or Formula C as described in the description.
First claim
Opening claim text (preview).
What is claimed is: 1 . A modified bismaleimide resin with a structural formula being: wherein L is represented by Formula A, Formula B, or Formula C below: wherein R 1 is a C1-C3 alkyl group, and R 2 is a C1-C16 substituted or unsubstituted alkyl group, a substituted or unsubstituted cycloalkyl group, or a substituted or unsubstituted aryl group, 2 . The modified bismaleimide resin according to claim 1 , wherein Formula A is represented by Formula A-1 below: 3 . The modified bismaleimide resin according to claim 1 , wherein Formula A is represented by Formula A-2 below: 4 . The modified bismaleimide resin according to claim 1 , wherein Formula A is represented by Formula A-3 below: 5 . The modified bismaleimide resin according to claim 1 , having a water absorption rate capable of being less than or equal to about 3.4%. 6 . A preparation method of a modified bismaleimide resin, comprising: mixing maleic anhydride with a bisamine compound to form a corresponding mixture; and heating the mixture, wherein the bisamine compound has a main chain structure or fragment represented by Formula A, Formula B, or Formula C below: wherein R 1 is a C1-C3 alkyl group, and R 2 is a C1-C16 substituted or unsubstituted alkyl group, a substituted or unsubstituted cycloalkyl group, or a substituted or unsubstituted aryl group, 7 . The preparation method of a modified bismaleimide resin according to claim 6 , wherein the mixing of the maleic anhydride with the bisamine compound is carried out at room temperature. 8 . The preparation method of a modified bismaleimide resin according to claim 6 , wherein the mixing of the maleic anhydride with the bisamine compound is carried out under a nitrogen atmosphere. 9 . The preparation method of a modified bismaleimide resin according to claim 6 , wherein the heating of the mixture is heating to 90° C. to 150° C. 10 . The preparation method of a modified bismaleimide resin according to claim 6 . wherein the heating of the mixture is continued for 10 hours to 20 hours.
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Classifications
Unsaturated polyimide precursors · CPC title
the unsaturated precursors being wholly aromatic · CPC title
- C08G73/125Primary
the unsaturated precursors containing atoms other than carbon, hydrogen, oxygen or nitrogen in the main chain · CPC title
Polyanilines or derivatives thereof · CPC title
- C08G73/0246Primary
Polyamines containing other atoms than carbon, hydrogen, nitrogen or oxygen in the main chain · CPC title
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Frequently asked questions
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- What does patent US2025092200A1 cover?
- A preparation method of a modified bismaleimide resin includes the following steps. Maleic anhydride is mixed with a bisamine compound to obtain a corresponding mixture. The mixture is heated. The bisamine compound has a main chain structure or fragment represented by Formula A, Formula B, or Formula C as described in the description.
- Who is the assignee on this patent?
- Nan Ya Plastics Corp
- What technology area does this patent fall under?
- Primary CPC classification C08G73/125. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Thu Mar 20 2025 00:00:00 GMT+0000 (Coordinated Universal Time) (A1). 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).