Film composition and a film prepared thereby

Patent metadata

Field	Value
Publication number	US-11059938-B2
Application number	US-201916593320-A
Country	US
Kind code	B2
Filing date	Oct 4, 2019
Priority date	Oct 5, 2018
Publication date	Jul 13, 2021
Grant date	Jul 13, 2021

Abstract

The disclosure provides a film composition, wherein the film composition includes an oligomer and a crosslinking agent. The oligomer can have a structure represented by Formula (I)

wherein R 1 and R 2 are independently hydrogen, C 1-20 alkyl group, C 2-20 alkenyl group, C 6-12 aryl group, C 6-12 alkylaryl group, C 5-12 cycloalkyl group, C 6-20 cycloalkylalkyl group, alkoxycarbonyl group, or alkylcarbonyloxy group; R 1 is not hydrogen when R 2 is hydrogen; a is 0 or 1; 100≥n≥1; 100≥m≥1; and when n is not 0, the ratio of n to m is from 3:1 to 1:4. The weight ratio of the oligomer and the crosslinking agent can be from 9:1 to 3:7. The oligomer has a number average molecular weight (Mn) from 1,000 to 8,000.

First claim

What is claimed is:

1. A film composition, comprising:
a crosslinking agent; and
an oligomer, wherein the weight ratio of the oligomer to the crosslinking agent is from 9:1 to 3:7, wherein the crosslinking agent is a compound having at least two crosslinkable functional groups or a bismaleimide, wherein the crosslinkable functional group is alkenyl group, methacrylate group, acrylate group, acryloyl group, epoxy group, carboxyl group, or a combination thereof, wherein the oligomer has a number average molecular weight (Mn) from 1,000 to 8,000, wherein the oligomer has a structure represented by Formula (I)

wherein R 1 and R 2 are independently hydrogen, C 1-20 alkyl group, C 2-20 alkenyl group, C 6-12 aryl group, C 6-12 alkylaryl group, C 5-12 cycloalkyl group, C 6-20 cycloalkylalkyl group, alkoxycarbonyl group, or alkylcarbonyloxy group; R 1 is not hydrogen when R 2 is hydrogen; a is 0 or 1; n≥0; m≥1, and when n is not 0, the ratio of n to m is from 3:1 to 1:4; and the repeat unit

and the repeat unit

are arranged in a random or block fashion.

2. The film composition as claimed in claim 1 , wherein R 1 and R 2 are independently hydrogen, or

wherein b is 0, or an integer from 1 to 19; and, R 1 is not hydrogen when R 2 is hydrogen.

3. The film composition as claimed in claim 1 , wherein R 1 and R 2 are independently hydrogen, or

wherein c is 0, or an integer from 1 to 6; and, R 1 is not hydrogen when R 2 is hydrogen.

4. The film composition as claimed in claim 1 , wherein R 1 and R 2 are independently hydrogen, or

and wherein d is 0, or an integer from 1 to 6; and, R 1 is not hydrogen when R 2 is hydrogen.

5. The film composition as claimed in claim 1 , wherein R 1 and R 2 are independently hydrogen, or

wherein e is 0, or an integer from 1 to 6; and, R 1 is not hydrogen when R 2 is hydrogen.

6. The film composition as claimed in claim 1 , wherein R 1 and R 2 are independently hydrogen, or

and wherein f is 0, or an integer from 1 to 6; R 3 is C 1-6 alkyl group; and, R 1 is not hydrogen when R 2 is hydrogen.

7. The film composition as claimed in claim 1 , wherein R 1 and R 2 are independently hydrogen, or

and wherein g is 0, or an integer from 1 to 6; R 4 is C 1-6 alkyl group; and, R 1 is not hydrogen when R 2 is hydrogen.

8. The film composition as claimed in claim 1 , wherein R 1 and R 2 are independently hydrogen, or

wherein h is an integer from 1 to 6; and, R 1 is not hydrogen when R 2 is hydrogen.

9. The film composition as claimed in claim 1 , wherein R 1 and R 2 are independently hydrogen, or

wherein i is 0 or an integer from 1 to 6; and, R 1 is not hydrogen when R 2 is hydrogen.

10. The film composition as claimed in claim 1 , wherein R 1 and R 2 are independently hydrogen, or

wherein j is 0 or an integer from 1 to 6; and, R 1 is not hydrogen when R 2 is hydrogen.

11. The film composition as claimed in claim 1 , further comprising a solvent, wherein the ratio of the weight of the solvent to the total weight of the oligomer and the crosslinking agent is from 0.01 to 60.

12. The film composition as claimed in claim 1 , wherein the crosslinking agent is a bismaleimide having a structure represented by Formula (II) or Formula (III)

wherein R 5 is —CR 2 —, —NR—, —C(O)CH 2 —, —CH 2 OCH 2 —, —C(O)—, —O—, —O—O—, —S—, —S—S—, —S(O)—, —CH 2 S(O)CH 2 —, —(O)S(O)—, —C 6 R 4 —, —CH 2 (C 6 R 4 )CH 2 —, —CH 2 (C 6 R 4 )(O)—, or substituted phenylene or substituted diphenylene; R 6 is —CR 2 —, —C(O)—, —O—, —O—O—, —S—, —S—S—, —(O)S(O)— or —S(O)—; and R is independently hydrogen or C 1-4 alkyl group.

13. The film composition as claimed in claim 1 , wherein the crosslinking agent is N′-bismaleimide-4,4′-diphenylmethane, 1,1′-(methylenedi-4,1-phenylene)bismaleimide, N,N′-(1,1′-biphenyl-4,4′-diyl) bismaleimide, N,N′-(4-methyl-1,3-phenylene)bismaleimide, 1,1′-(3,3′ dimethyl-1,1′-biphenyl-4,4′-diyl)bismaleimide, N,N′-ethylenedimaleimide, N,N′-(1,2-phenylene)dimaleimide, N,N′-(1,3-phenylene)dimaleimide, N,N′-thiodimaleimide, N,N′-dithiodimaleimide, N,N′-ketonedimaleimide, N,N′-methylene-bis-maleinimide, bis-maleinimidomethyl-ether, 1,2-bis-(maleimido)-1,2-ethandiol, N,N′-4,4′-diphenylether-bis-maleimid, or 4,4′-bis(maleimido)-diphenylsulfone.

14. A film, which is a cured product of the film composition as claimed in claim 1 .

Assignees

• Ind Tech Res Inst

Inventors

• Chu Yen-Yi
• Chin Hsi-Yi
• Yang Wei-Ta
• Kuan Chi-En

Classifications

• C08G61/08 Primary

  of carbocyclic compounds containing one or more carbon-to-carbon double bonds in the ring · CPC title

• C08L65/00

  Compositions of macromolecular compounds obtained by reactions forming a carbon-to-carbon link in the main chain (C08L7/00 - C08L57/00, C08L61/00 take precedence); Compositions of derivatives of such polymers · CPC title

• C08L2203/16

  used for films · CPC title

• C08G2261/1426

  containing carboxy groups (COOH) and/or -C(=O)O-moieties · CPC title

• C08G2261/1412

  Saturated aliphatic units · CPC title