Butyl polymer composition having improved cold flow properties
US6872780B2 · kind B2 · utility
0Cited by
6References
27Claims
0Family size
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Key dates
| Filing date | Jul 24, 2001 |
| Grant date | Mar 29, 2005 |
| Priority date | — |
| Expiry date | Dec 23, 2021 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L91/00
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A butyl polymer composition having improved cold flow properties is described. The composition comprises a butyl polymer (preferably a halogenated butyl polymer) and a styrene monomer. The styrene monomer is a copolymer of α-methylstyrene and another styrenic monomerer (e.g., styrene and vinyl toluene). Relative to the base butyl polymer, the cold flow properties of the butyl polymer composition are improved along with a number of other properties.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.