Aqueous sizing compositions for glass fibers providing improved whiteness in glass fiber reinforced plastics
US5646207A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Feb 15, 1995 |
| Grant date | Jul 8, 1997 |
| Priority date | — |
| Expiry date | Feb 15, 2015 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08J2323/02
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
An aqueous sizing composition for glass fibers particularly useful for the reinforcement of thermoplastic or thermosetting matrix polymers contains film-forming material, fluorescent whitening agent, coupling agent, stabilizing agent and lubricant. The film-forming material is selected to be compatible with thermosetting or thermoplastic matrix polymer used in the ultimate forming process. The fluorescent whitening agent is at least dispersed, emulsified or solubilized in water. The sizing compositions are particularly advantageous for sizing glass fibers to be used in the reinforcement of matrix polymers for forming molded parts. The resultant molded part exhibits exceptional whiteness and and comparable physical properties to materials without the brightening agent.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.