Method of preparing a higher solids phenolic resin
US6730770B2 · kind B2 · utility
2Cited by
39References
20Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 31, 2002 |
| Grant date | May 4, 2004 |
| Priority date | — |
| Expiry date | May 31, 2022 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31601
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A phenol-formaldehyde resole resin for use as a binder for glass fibers is acidified with sulfamic acid to a pH of 3 or less after base-catalyzed resinification. An increase in actual solids observed compared with neutralized resin, reflecting a desired improvement in efficiency.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.