Pressure-sensitive adhesive
US4918128A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 22, 1988 |
| Grant date | Apr 17, 1990 |
| Priority date | — |
| Expiry date | Dec 22, 2008 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L2666/54
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
The pressure-sensitive adhesive of the invention comprises a latex of natural rubber graft-copolymerized with 2 to 10% by weight of styrene and 10 to 25% by weight of methyl methacrylate and a finely divided particulate material having no thermoplasticity such as silica gels and zeolites in an amount of 5 to 30 parts by weight per 100 parts by weight of the natural rubber. The pressure-sensitive adhesive has excellent characteristics in the adhesive bonding, resistance against blocking, frictional behavior, heat resistance and abrasion resistance and also is free from the trouble of decrease in the adhesive bonding strength caused by the transfer of a silicone oil from the roller of printing machines.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.