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US 10,798,826 B2Granted
Polyimide laminate film, method for manufacturing polyimide laminate film, method for manufacturing thermoplastic polyimide, and method for manufacturing flexible metal-clad laminate
AssigneeKaneka Corporation
InventorsSeiji Hosogai, Hiroyuki Ushiro, Junpei Saito, Kazuhiro Ono
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Abstract
A polyimide laminated film containing a thermoplastic polyimide layer that includes a block (A) having a storage elastic modulus of 0.15 GPa or more at 380° C. and a block (B) having a storage elastic modulus of 0.10 GPa or less at 380° C. is used as a polyimide laminated film that has high peel strength and can suppress occurrence of a crack in an alkaline environment.
Claims13
A polyimide laminated film, comprising:
- at least one thermoplastic polyimide layer comprising a thermoplastic polyimide that comprises a block (A) having a storage elastic modulus of 0.15 GPa or more at 380° C. and a block (B) having a storage elastic modulus of 0.10 GPa or less at 380° C., and
- a non-thermoplastic polyimide film,
- wherein the at least one thermoplastic polyimide layer is present on at least one surface of the non-thermoplastic polyimide film,
- wherein the block (A) comprises 4,4′-bis (4-aminophenoxy) biphenyl (BAPB), 4,4′-diaminodiphenyl ether (ODA), and 3,3′,4,4′-biphenyltetracarboxylic dianhydride (BPDA),
- wherein the block (B) comprises a combination of (i) at least one diamine selected from the group consisting of 2,2′-bis [4-(4-aminophenoxy) phenyl] propane (BAPP) and 4,4′-diaminodiphenyl ether (ODA), and (ii) an acid dianhydride, which is pyromellitic dianhydride (PMDA), and
- wherein an amount of the block (A) is from 30 mol % to 70 mol % and an amount of the block (B) is from 30 mol % to 70 mol %, based on a total molar amount of the thermoplastic polyimide.
3 more elements
A method for manufacturing a thermoplastic polyimide, the method comprising:
- copolymerizing a block (A) having a storage elastic modulus of 0.15 GPa or more at 380° C. and a block (B) having a storage elastic modulus of 0.10 GPa or less at 380° C.,
- wherein the block (A) comprises 4,4′-bis (4-aminophenoxy) biphenyl (BAPB), 4,4′-diaminodiphenyl ether (ODA), and 3,3′,4,4′-biphenyltetracarboxylic dianhydride (BPDA),
- wherein the block (B) comprises a combination of (i) at least one diamine selected from the group consisting of 2,2′-bis [4-(4-aminophenoxy) phenyl] propane (BAPP) and 4,4′-diaminodiphenyl ether (ODA), and (ii) an acid dianhydride, which is pyromellitic dianhydride (PMDA), and
- wherein an amount of the block (A) is from 30 mol % to 70 mol % and an amount of the block (B) is from 30 mol % to 70 mol %, based on a total molar amount of the thermoplastic polyimide.
1 more element
A method for manufacturing a polyimide laminated film, the method comprising:
- laminating at least one thermoplastic polyimide layer and a non-thermoplastic polyimide layer,
- wherein the at least one thermoplastic polyimide layer comprises a polyimide comprising a block (A) having a storage elastic modulus of 0.15 GPa or more at 380° C. and a block (B) having a storage elastic modulus of 0.10 GPa or less at 380° C.,
- wherein the block (A) comprises 4,4′-bis (4-aminophenoxy) biphenyl (BAPB), 4,4′-diaminodiphenyl ether (ODA), and 3,3′,4,4′-biphenyltetracarboxylic dianhydride (BPDA),
- wherein the block (B) comprises a combination of (i) at least one diamine selected from the group consisting of 2,2′-bis [4-(4-aminophenoxy) phenyl] propane (BAPP) and 4,4′-diaminodiphenyl ether (ODA), and (ii) an acid dianhydride, which is pyromellitic dianhydride (PMDA), and
- wherein an amount of the block (A) is from 30 mol % to 70 mol % and an amount of the block (B) is from 30 mol % to 70 mol %, based on a total molar amount of the thermoplastic polyimide.
2 more elements
Dependencies are inferred from the claim text.