Molded foam articles prepared with reduced mold residence time and improved quality
US6887911B2 · kind B2 · utility
19Cited by
9References
25Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 11, 2003 |
| Grant date | May 3, 2005 |
| Priority date | — |
| Expiry date | Jun 11, 2023 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G2125/00
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Foamed molded articles produced by reaction injection molding (RIM) are provided. The molded articles are formed by reaction of a polyisocyanate component with an isocyanate reactive component in a mold using a blowing agent. The molded articles are preferably composites formed in the presence of a fibrous reinforcing material. The foamed articles are characterized by relatively short minimum mold residence times, and can thereby be produced more economically than prior art composites. The foamed articles are further characterized by a reduction in physical defects, such as splits and voids.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.