Biopolymer and isocyanate based binder and composite materials
US10947429B2 · kind B2 · utility
2Cited by
12References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 30, 2015 |
| Grant date | Mar 16, 2021 |
| Priority date | — |
| Expiry date | Jul 5, 2035 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08J2303/02
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A binder comprising isocyanate droplets in water, wherein the isocyanate droplets have an average droplet size of 500 microns or less, and the isocyanate droplets have shells comprising a biopolymer or a reaction product of a biopolymer and isocyanate. The biopolymer may be a biopolymer nanoparticle or cooked and chemically modified starch. Optionally, the binder may also include urea. The substrate for the binder may be wood, another lignocellulosic material, or synthetic or natural fibers. In particular examples, the binder is used to make no added formaldehyde wood composites including particle board and MDF.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.