Flexible maleimide polymer and method for preparing the same

Patent metadata

Field	Value
Publication number	US-9267005-B2
Application number	US-201213549606-A
Country	US
Kind code	B2
Filing date	Jul 16, 2012
Priority date	Dec 29, 2011
Publication date	Feb 23, 2016
Grant date	Feb 23, 2016

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 R 1 is —(CH 2 ) 10 —CO 2 H, and R 2 is H, OH, SO 3 Na, NO 2 , CN or CO 2 H. The reactant (b) is a compound with a structure represented by formula (III)

wherein A is

R 3 is H or methyl group, x is between 1-12, R 4 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 R 5 and R 6 are independent H or C 1-4 alkyl group.

First claim

What is claimed is:

1. A flexible maleimide polymer, which is a reaction product of a composition consisting of a reactant (a), a reactant (b), and a reactant (c), and an organic solvent, wherein the reactant (a) has a structure represented by

wherein R is H, —(CH 2 ) 10 —CO 2 H, or

and R 2 is H, OH, SO 3 Na, NO 2 , CN or CO 2 H;
the reactant (b) is a compound with a structure represented by formula (III)

wherein A is

R 3 is H or methyl group, x is between 1-12, R 4 is H or methyl group, and y and z are both between 1-5; and
the reactant (c) is a compound with a structure represented by formula (IV), or a compound with a structure represented by formula (V)

wherein R 5 and R 6 are independent H or C 1-4 alkyl group, and wherein the molar ratio between the reactant (a) and the reactant (c) is from 16:1 to 1:1, and the molar ratio between the reactant (b) and the reactant (c) is from 4:1 to 1:1.

2. The flexible maleimide polymer as claimed in claim 1 , wherein the reactant (a) is a compound with a structure represented by Formula (I) of

or a compound with a structure represented by Formula (II) of

wherein R 1 is —(CH 2 ) 10 —CO 2 H, and R 2 is H, OH, SO 3 Na, NO 2 , CN or CO 2 H.

3. A method for preparing flexible maleimide polymer as claimed in claim 1 , comprising:
polymerizing a reactant (a) with a reactant (b) in the presence of a reactant (c) and an organic solvent to obtain the flexible maleimide polymer, wherein the reactant (a) has a structure represented by

wherein R is H, —(CH 2 ) 10 —CO 2 H, or

and R 2 is H, OH, SO 3 Na, NO 2 , CN or CO 2 H;
the reactant (b) is a compound with a structure represented by formula (III)

wherein A is

R 3 is H or methyl group, x is between 1-12, R 4 is H or methyl group, and y and z are both between 1-5; and
the reactant (c) is a compound with a structure represented by formula (IV), or a compound with a structure represented by formula (V)

wherein R 5 and R 6 are independent H or C 1-4 alkyl group, and wherein the molar ratio between the reactant (a) and the reactant (c) is from 16:1 to 1:1, and the molar ratio between the reactant (b) and the reactant (c) is from 4:1 to 1:1.

4. The method as claimed in claim 3 , wherein the reactant (a) is a compound with a structure represented by Formula (I) of

or a compound with a structure represented by Formula (II) of

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, wherein R 1 is —(CH 2 ) 10 —CO 2 H, and R 2 is H, OH, SO 3 Na, NO 2 , CN or CO 2 H.

Assignees

• Huang Li-Fu
• Tsai Li-Duan
• Wu Wei-Hsin
• Ind Tech Res Inst

Inventors

• Huang Li-Fu
• Tsai Li-Duan
• Wu Wei-Hsin

Classifications

• C08L79/085

  Unsaturated polyimide precursors · CPC title

• C08K5/3445

  Five-membered rings · CPC title

• C08G73/124 Primary

  the unsaturated precursors containing oxygen in the form of ether bonds in the main chain · CPC title

• C08K5/3415

  Five-membered rings · CPC title