Methods for annealing block copolymers and articles manufactured therefrom
US9394411B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Dec 23, 2014 |
| Grant date | Jul 19, 2016 |
| Priority date | — |
| Expiry date | Dec 23, 2034 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29C2071/022
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
Disclosed herein is a block copolymer comprising a first block derived from a vinyl aromatic monomer; where the vinyl aromatic monomer has at least one alkyl substitution on an aromatic ring; a second block derived from a siloxane monomer; where a chi parameter that measures interactions between the first block and the second block is 0.03 to 0.18 at a temperature of 200° C. Disclosed herein is a method comprising polymerizing a vinyl aromatic monomer to form a first block; and polymerizing a second block onto the first block to form a block copolymer; where the second block is derived by polymerizing a siloxane monomer; and where the block copolymer has a chi parameter of 0.03 to 0.18 at a temperature of 200° C.; where the chi parameter is a measure of interactions between the first block and the second block of the copolymer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.