Method and device for the manufacture of a high optical quality transparent plastic sheet
US5032665A · kind A · utility
2Cited by
2References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 18, 1990 |
| Grant date | Jul 16, 1991 |
| Priority date | — |
| Expiry date | Sep 18, 2010 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G18/7818
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A high optical quality polyurethane layer is manufactured by reactive pouring or reactive spraying of a reaction mixture comprising an aliphatic isocyanate component and a polyol component followed by a polymerization comprising the passage of the layer through a catalytic atmosphere containing at least one tertiary amine.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.