Self-assembled structures, method of manufacture thereof and articles comprising the same

Patent metadata

Field	Value
Publication number	US-9447220-B2
Application number	US-201213681002-A
Country	US
Kind code	B2
Filing date	Nov 19, 2012
Priority date	Nov 19, 2012
Publication date	Sep 20, 2016
Grant date	Sep 20, 2016

Abstract

Disclosed herein is a graft block copolymer comprising a first block polymer; the first block polymer comprising a backbone polymer and a first graft polymer; where the first graft polymer comprises a surface energy reducing moiety; and a second block polymer; the second block polymer being covalently bonded to the first block; wherein the second block comprises the backbone polymer and a second graft polymer; where the second graft polymer comprises a functional group that is operative to crosslink the graft block copolymer.

First claim

What is claimed is:

1. A graft block copolymer comprising:
a first block polymer; the first block polymer comprising a backbone polymer and a first graft polymer; where the first graft polymer comprises a surface energy reducing moiety; and
a second block polymer; the second block polymer being covalently bonded to the first block; wherein the second block comprises the backbone polymer and a second graft polymer; where the second graft polymer comprises a functional group that is operative to crosslink the graft block copolymer.

2. The copolymer of claim 1 , where the backbone polymer is a polynorbornene.

3. The copolymer of claim 1 , where the first graft polymer is a poly(fluorostyrene), a poly(tetrafluoro-hydroxy styrene), or a combination comprising at least one of the foregoing polymers.

4. The copolymer of claim 1 , where the first graft polymer is a poly(tetrafluoro-para-hydroxy styrene).

5. The copolymer of claim 1 , where the second graft polymer is a copolymer of a poly(hydroxy styrene) and a poly(N-phenyl maleimide).

6. The copolymer of claim 5 , where a molar ratio of the poly(hydroxy styrene) to the poly(N-phenyl maleimide) is 1:1.

7. The copolymer of claim 1 , where the first graft polymer comprises a functional group that facilitates crosslinking of the graft block copolymer.

8. The copolymer of claim 1 , where the functional group is selected from the group consisting of a phenol, a hydroxyl aromatic, a hydroxyl heteroaromatic, an aryl thiol, a hydroxyl alkyl, a primary hydroxyl alkyl, a secondary hydroxyl alkyl, a tertiary hydroxyl alkyl, an alkyl thiol, a hydroxyl alkene, a melamine, a glycoluril, a benzoguanamine, a urea, or combinations thereof.

9. The copolymer of claim 1 , where the functional group is a thiol.

10. An article comprising:
a crosslinked graft block copolymer having a cylindrical morphology, where the graft block copolymer comprises a first block polymer; the first block polymer comprising a backbone polymer and a first graft polymer; where the first graft polymer comprises a surface energy reducing moiety; and a second block polymer; the second block polymer being covalently bonded to the first block; wherein the second block comprises the backbone polymer and a second graft polymer; where the second graft polymer comprises a functional group that is operative to crosslink the graft block copolymer; where the crosslinked graft block copolymer has a bottle brush morphology.

Assignees

• Rohm & Haas Elect Mat
• Texas A & M Univ Sys

Inventors

• Cho Sangho
• Sun Guorong
• Wooley Karen L
• Thackeray James W
• Trefonas Iii Peter

Classifications

• C08F283/14 Primary

  on to polymers obtained by ring-opening polymerisation of carbocyclic compounds having one or more carbon-to-carbon double bonds in the carbocyclic ring, i.e. polyalkeneamers {(C08F283/004 takes precedence)} · CPC title

• C08G2261/128

  graft · CPC title

• C08G2261/76

  crosslinking · CPC title

• C08G2261/418

  Ring opening metathesis polymerisation [ROMP] · CPC title

• C08G2261/3324

  derived from norbornene · CPC title