Propylene copolymers for adhesive applications
US8618219B2 · kind B2 · utility
4Cited by
50References
5Claims
0Family size
Assignee
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Key dates
| Filing date | Sep 29, 2006 |
| Grant date | Dec 31, 2013 |
| Priority date | — |
| Expiry date | Dec 19, 2028 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L2666/06
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Disclosed herein is an in-reactor produced multi-component copolymer comprises a semi-crystalline component having a crystallinity of 20% or more, and an amorphous component having a crystallinity of 5% or less. The copolymer comprises at least 80 wt % of units derived from propylene and from about 1 to about 20 wt % of units derived from at least one C6 to C12 alpha-olefin. The copolymer has a viscosity at 190° C. of at least 530 mPa sec and a heat of fusion between about 10 and about 70 J/g. An adhesive containing the copolymer exhibits a good balance of adhesive properties and mechanical strength.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.