Fire-retardant monocarboxlylic acid amide copolymers
US4271271A · kind A · utility
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7Claims
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Key dates
| Filing date | May 7, 1980 |
| Grant date | Jun 2, 1981 |
| Priority date | — |
| Expiry date | May 7, 2000 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S521/907
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
Copolymers of monovinyl aromatic monomers and ethylenically unsaturated monocarboxylic acid amide monomers are blended with water as a blowing agent, bromodiphenylethers as fire retardants, and metal oxides as synergist for the ethers to form a composition which can be foamed to densities of between 1 and 10 pounds per cubic foot, said foam composition having fire-retardant properties.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.