Aminoplast moulding materials with cured aminoplast filler
US3957701A · kind A · utility
4Cited by
3References
3Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 27, 1974 |
| Grant date | May 18, 1976 |
| Priority date | — |
| Expiry date | Aug 27, 1994 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L61/20
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Aminoplastic moulding compositions include a filler which comprises or consists of a cured, particulate aminoplast material having a water absorption (absorbency) of at least 2.0 millilitres of water per gram; the aminoplast filler material preferably is a hydrophilic urea-formaldehyde foam, which has been disintegrated, or a particulate urea-formaldehyde material precipitated from a solution containing a wetting agent.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.