High performance lignin-acrylonitrile polymer blend materials
US9815985B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 14, 2015 |
| Grant date | Nov 14, 2017 |
| Priority date | — |
| Expiry date | Jul 14, 2035 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L33/20
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A polymer blend material comprising: (i) a lignin component having a weight-average molecular weight of up to 1,000,000 g/mol; and (ii) an acrylonitrile-containing copolymer rubber component comprising acrylonitrile units in combination with diene monomer units, and having an acrylonitrile content of at least 20 mol %; wherein said lignin component is present in an amount of at least 5 wt % and up to about 95 wt % by total weight of components (i) and (ii); and said polymer blend material possesses a tensile yield stress of at least 5 MPa, or a tensile stress of at least 5 MPa at 10% elongation, or a tensile stress of at least 5 MPa at 100% elongation. Methods for producing the polymer blend, molded forms thereof, and articles thereof, are also described.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.