Method for flexibilizing cured urea formaldehyde resin-bound glass fiber nonwovens
US5804254A · kind A · utility
23Cited by
3References
2Claims
0Family size
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Key dates
| Filing date | Jun 13, 1997 |
| Grant date | Sep 8, 1998 |
| Priority date | — |
| Expiry date | Jun 13, 2017 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05K1/0366
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A method for flexibilizing a glass fiber nonwoven bound with a cured urea formaldehyde resin binder is provided in which the binder includes a cured urea formaldehyde resin and 0.5-5% by weight, based on the weight of the urea formaldehyde resin, of a water-soluble polymer comprising 40-100% by weight, based on polymer weight, of a polymerized ethylenically unsaturated carboxylic acid monomer, the polymer having a weight average molecular weight from 100,000 to 2,000,000.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.