FLEXIBLE MALEIMIDE POLYMER AND METHOD FOR PREPARING THE SAME

• US 20130172518A1
• Filed: 07/16/2012
• Published: 07/04/2013
• Est. Priority Date: 12/29/2011
• Status: Active Grant

• Current Assignee: Industrial Technology Research Institute
• Original Assignee: Li-Duan Tsai, Li-Fu Huang
• Inventors: TSAI, Li-Duan, HUANG, Li-Fu, WU, Wei-Hsin
• Granted Patent: US 9,267,005 B2
• Time in Patent Office: Days
• US Class Current: 528/322
• CPC Class Codes: C08G 73/124 the unsaturated precursors containing oxygen in the form of ether bonds in the main chain
• CPC Class Codes: C08K 5/3415 Five-membered rings
• CPC Class Codes: C08K 5/3445 Five-membered rings
• CPC Class Codes: C08L 79/085 Unsaturated polyimide precursors

Abstract

Disclosed is a flexible maleimide polymer. The flexible maleimide polymer includes a reaction product of reactants (a)-(c). The reactant (a) is maleimide, a compound with a structure represented by Formula (I), a compound with a structure represented by Formula (II), or combinations thereof

• • wherein R¹ is —(CH₂)₁₀—CO₂H, and R² is H, OH, SO₃Na, NO₂, CN or CO₂H. The reactant (b) is a compound with a structure represented by formula (III)

• • wherein A is

R³ is H or methyl group, x is between 1-12, R⁴ is H or methyl group, and y and z are both between 1-5. The reactant (c) is a compound with a structure represented by formula (IV), or a compound with a structure represented by formula (V)

• • wherein R⁵ and R⁶ are independent H or C_1-4 alkyl group.

Claims

1. A flexible maleimide polymer, comprising a reaction product of a reactant (a), a reactant (b), and a reactant (c), wherein the reactant (a) is maleimide, a compound with a structure represented by Formula (I), a compound with a structure represented by Formula (II), or combinations thereof,

2. The flexible maleimide polymer as claimed in claim 1, wherein the reactant (a) comprises maleimide, and the molar ratio between the maleimide and the reactant (c) is from 5:

0.05 to 1;

1.

3. The flexible maleimide polymer as claimed in claim 1, wherein the reactant (a) comprises the compound with the structure represented by Formula (I) or the compound with the structure represented by Formula (II), and the molar ratio between the compound with the structure represented by Formula (I) and the reactant (c) is from 4:

0.05 to 1;

1, or the molar ratio between the compound with the structure represented by Formula (II) and the reactant (c) is from 4;

0.05 to 1;

1.

4. The flexible maleimide polymer as claimed in claim 1, wherein the molar ratio between the reactant (b) and the reactant (c) is from 2:

0.05 to 1;

1.

5. The flexible maleimide polymer as claimed in claim 1, wherein the maleimide is

6. A method for preparing flexible maleimide polymer, comprising:

reacting a reactant (a) with a reactant (b) in the presence of a reactant (c) undergoing a polymerization to obtain the flexible maleimide polymer, wherein the reactant (a) is maleimide, a compound with a structure represented by Formula (I), a compound with a structure represented by Formula (II), or combinations thereof,

7. The method as claimed in claim 6, wherein the reactant (a) comprises maleimide, and the molar ratio between the maleimide and the reactant (c) is from 5:

0.05 to 1;

1.

8. The method as claimed in claim 6, wherein the reactant (a) comprises the compound with the structure represented by Formula (I) or the compound with the structure represented by Formula (II), and the molar ratio between the compound with the structure represented by Formula (I) and the reactant (c) is from 4:

0.05 to 1;

1, or the molar ratio between the compound with the structure represented by Formula (II) and the reactant (c) is from 4;

0.05 to 1;

1.

9. The method as claimed in claim 6, wherein the molar ratio between the reactant (b) and the reactant (c) is from 2:

0.05 to 1;

1.

10. The method as claimed in claim 6, wherein the maleimide is