Propylene copolymers for adhesive applications
US8653169B2 · kind B2 · utility
13Cited by
50References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 29, 2006 |
| Grant date | Feb 18, 2014 |
| Priority date | — |
| Expiry date | Jul 5, 2027 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L2666/24
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Disclosed herein are adhesives comprising a copolymer comprising 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 C10 alpha-olefin. The copolymer has a molecular weight of less than 100,000 and a heat of fusion between about 10 and about 70 J/g. An adhesive containing the copolymer preferably exhibits at least 50% fiber tear at −18° C. and at least 50% fiber tear at +25° C. using Inland paper board as a substrate; a viscosity of less than 50,000 mPa sec at 190° C., a set time of less than 4 seconds and a toughness of at least 3.4 megajoule/m3.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.