초록 ▼

The invention relates to a process for the treatment of substantially amorphous polyolefins to provide permanently tacky, low viscosity materials which have useful pressure-sensitive adhesive properties. These permanently tacky amorphous polyolefin homo- and copolymers, as well as blends of such amo

The invention relates to a process for the treatment of substantially amorphous polyolefins to provide permanently tacky, low viscosity materials which have useful pressure-sensitive adhesive properties. These permanently tacky amorphous polyolefin homo- and copolymers, as well as blends of such amorphous polyolefins with crystalline polyolefins containing up to 20 weight percent crystalline polyolefin, are novel pressure-sensitive adhesives.

대표청구항 ▼

A process for preparing tacky modified amorphous polyolefin compositions useful as pressure-sensitive adhesives which comprises reacting substantially amorphous polyolefin having a melt viscosity of about 100 to 200,000 cp. at 190°C. with at least 1 weight percent of silica-alumina catalyst at a tem

A process for preparing tacky modified amorphous polyolefin compositions useful as pressure-sensitive adhesives which comprises reacting substantially amorphous polyolefin having a melt viscosity of about 100 to 200,000 cp. at 190°C. with at least 1 weight percent of silica-alumina catalyst at a temperature of at least 250°C. to provide a low viscosity, permanently tacky hot-melt pressure-sensitive adhesive.