Fire retardant polymer resin
US4820576A · kind A · utility
9Cited by
4References
14Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 18, 1988 |
| Grant date | Apr 11, 1989 |
| Priority date | — |
| Expiry date | Feb 18, 2008 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T442/2631
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A flame-retardant polymer is created by forming a first resin typically by reacting resorcinol with furfural in a ratio of one mole of the former to less than a mole of the latter in the presence of an alkaline catalyst. A resole is then formed by reacting typically phenol with formaldehyde in a ratio of one mole of phenol to more than a mole of the aldehyde in the presence of an alkaline catalyst. The first resin and resole are mixed together with a powered oxyborate compound such as zinc borate and allowed to polymerize to form the polymer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.