Composition containing sulfonated block copolymers and articles made therefrom
US7919565B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 20, 2010 |
| Grant date | Apr 5, 2011 |
| Priority date | — |
| Expiry date | Apr 20, 2030 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T442/678
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A composition having a sulfonated block copolymer which is solid and non-dispersible in water having at least two polymer end blocks A, at least one polymer interior block B, and at least one polymer block D. Each A block is a segment of one or more polymerized para-substituted styrene monomers, each B block contains segments of one or more vinyl aromatic monomers selected from polymerized (i) unsubstituted styrene monomers, (ii) ortho-substituted styrene monomers, (iii) meta-substituted styrene monomers, (iv) alpha-methylstyrene, (v) 1,1-diphenylethylene, (vi) 1,2-diphenylethylene and (vii) mixtures thereof, and each D block having a glass transition temperature of less than 20° C. and a number average molecular weight of between 1,000 and 50,000 Adhesives, coatings and membranes are formed from the composition. Various articles are formed with the composition including films, fibers, fabrics, laminates, and absorbent cores.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.