Phenol resin forming material for pulley used in motor vehicles and phenol resin pulley for motor vehicles
US6765051B2 · kind B2 · utility
1Cited by
1References
18Claims
0Family size
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Key dates
| Filing date | Feb 13, 2003 |
| Grant date | Jul 20, 2004 |
| Priority date | — |
| Expiry date | Feb 13, 2023 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08K2003/265
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A phenol resin composition for forming pulleys used in motor vehicles is disclosed. The composition comprises 35 to 45 wt % of resol, 35 to 45 wt % of glass fiber, 5 to 15 wt % of one or more inorganic powders selected from the group consisting of calcium carbonate, clay, and wallastonite, and 1 to 3 wt % of polyvinyl butyral. The phenol resin pulley for motor vehicles is almost free from swelling or shell cracking on the surface at a high temperature of 250° C. or more and exhibits high mechanical strength and superior thermal shock resistance.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.