Copolymer formulation for directed self assembly, methods of manufacture thereof and articles comprising the same

Patent metadata

Field	Value
Publication number	US-2016186002-A1
Application number	US-201514944469-A
Country	US
Kind code	A1
Filing date	Nov 18, 2015
Priority date	Dec 30, 2014
Publication date	Jun 30, 2016
Grant date	—

Abstract

Disclosed herein is a composition comprising a block copolymer; where the block copolymer comprises a first polymer and a second polymer; where the first polymer and the second polymer of the block copolymer are different from each other and the block copolymer forms a phase separated structure; an additive polymer comprising a polymer wherein the surface tension of the polymer with the first polymer and the surface tension of the polymer with the second polymer are both lower than the surface tension between the first polymer and second polymer; where the additive polymer comprises a reactive functional moiety that forms a bond or a complex or a coordinate with the substrate upon being disposed on the substrate; where the reactive functional moiety is unreacted when it is a part of the composition; and a solvent.

First claim

What is claimed is:

1 . A composition comprising:
a block copolymer; where the block copolymer comprises a first polymer and a second polymer; where the first polymer and the second polymer of the block copolymer are different from each other and the block copolymer forms a phase separated structure; an additive polymer comprising a polymer wherein the surface tension of the polymer with the first polymer and the surface tension of the polymer with the second polymer are both lower than the surface tension between the first polymer and second polymer; where the additive polymer comprises a reactive functional moiety that forms a bond or a complex or a coordinate with the substrate upon being disposed on the substrate; where the reactive functional moiety is unreacted when it is a part of the composition; and a solvent.

2 . The composition of claim 1 , where the additive copolymer is a copolymer that comprises a third polymer and a fourth polymer; where the third polymer and the fourth polymer of the additive polymer are different from each other; where the first polymer of the block copolymer is chemically identical with or substantially chemically similar to the third polymer of the additive polymer or where the second polymer of the block copolymer is chemically identical with or substantially chemically similar to the fourth polymer of the additive polymer.

3 . The composition of claim 2 , where the first polymer and the third polymer is a vinyl aromatic polymer obtained by a polymerization of units having a structure of formula (1):

wherein R 5 is hydrogen, an alkyl, a haloalkyl or halogen; Z 1 is hydrogen, halogen, a hydroxyl, a haloalkyl or an alkyl; and p is from 1 to about 5.

4 . The composition of claim 2 , where the second polymer and the fourth polymer is obtained from a polymerization of units having a structure represented by formula (2):

where R 1 is a hydrogen or an alkyl group having 1 to 10 carbon atoms. Examples of the first repeat monomer are acrylates and alkyl acrylates such as α-alkyl acrylates, methacrylates, ethacrylates, propyl acrylates, butyl acrylate, or the like, or a combination comprising at least one of the foregoing acrylates; or where the second polymer has a structure derived from a monomer having a structure represented by the formula (3):

where R 1 is a hydrogen or an alkyl group having 1 to 10 carbon atoms and R 2 is a C 1-10 alkyl, a C 3-10 cycloalkyl, or a C 7-10 aralkyl group.

5 . The composition of claim 1 , where the additive polymer is hydroxyl end-functionalized poly(styrene-r-methylmethacrylate) or a hydroxyl end-functionalized poly(styrene)-r-poly(methyl methacrylate)-r-poly(hydoxyethyl methacrylate).

6 . The composition of claim 1 , where the additive copolymer is a random copolymer and where the additive polymer has a lower molecular weight than the block copolymer.

7 . The composition of claim 1 , where the additive polymer is a random copolymer that comprises different polymers where a surface energy of respective polymers are higher and lower than those of the first polymer and the second polymer of the block copolymer respectively, but where the average surface energy of the additive polymer lies between that of the first polymer and the second polymer of the block polymer.

8 . The composition of claim 1 , where the additive polymer is a block copolymer or a homopolymer.

9 . The composition of claim 1 , where first polymer and the second polymer is present in the block copolymer in an amount sufficient to form a cylindrical morphology, where the first polymer is present in an amount of 15 to 35 wt %, and wherein the second polymer is present in the block copolymer in an amount of 85 to 65 wt %, based on the total weight of the block copolymer.

10 . The composition of claim 1 , where first polymer and the second polymer is present in the block copolymer in an amount sufficient to form a lamellar morphology, where the first polymer is present in an amount of 35 to 65 wt %, and wherein the second polymer is present in the block copolymer in an amount of 35 to 65 wt %, based on the total weight of the block copolymer.

Assignees

• Rohm & Haas Elect Mat
• Dow Global Technologies Llc

Inventors

• Hustad Phillip D
• Zhang Jieqian
• Trefonas Iii Peter

Classifications

• B81C2201/0149

  Forming nanoscale microstructures using auto-arranging or self-assembling material · CPC title

• C08L33/04

  Homopolymers or copolymers of esters {(C08L43/04 takes precedence)} · CPC title

• C08L23/08

  Copolymers of ethene (C08L23/16 takes precedence) · CPC title

• C08L53/00 Primary

  Compositions of block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers · CPC title

• C08L25/06 Primary

  Polystyrene · CPC title