Cyclic urea-formaldehyde prepolymer-modified melamine-containing resins, and use in binders for cellulosic-based composites
US6399719B1 · kind B1 · utility
11Cited by
23References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 23, 1999 |
| Grant date | Jun 4, 2002 |
| Priority date | — |
| Expiry date | Jun 23, 2019 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31957
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A melamine-containing resin modified with a cyclic urea prepolymer comprising urea, formaldehyde and ammonia or a primary amine. The prepolymer-modified melamine-containing resin provides useful binders alone, or when combined or coreacted with other resins. Products prepared with the binder include wood composites such as particleboard and medium density fiberboard.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.