초록

Compatible polymer blends useful as melt adhesives comprising a copolymer of butene-1 and from about 5.5 to about 20 weight percent of ethylene or propylene, a hydrocarbon tackifier and an amorphous polypropylene.

대표청구항 ▼

A compatible polymer blend useful as a melt adhesive for adherence to polyethylene and polypropylene substrates comprising (1) the copolymer of butene-1 and from about 5.5 to about 20 weight percent of an olefin selected from the group consisting of ethylene and propylene, (2) a hydrocarbon tackifie

A compatible polymer blend useful as a melt adhesive for adherence to polyethylene and polypropylene substrates comprising (1) the copolymer of butene-1 and from about 5.5 to about 20 weight percent of an olefin selected from the group consisting of ethylene and propylene, (2) a hydrocarbon tackifier and (3) an amorphous polypropylene, wherein said copolymer has a melt index in the range of about 0.3 to about 2000 grams/10 minutes, said hydrocarbon tackifier has a ring and ball softening point in the range of about 10°to about 150°C., said amorphous polypropylene has a crystallinity of less than about 10 weight percent and a molecular weight in the range of about 300 to about 50,000 and wherein said components are present in the following amounts: ________________________________ -Weight Percent ________________________________ Butene-1 Copolymer 10-40 Hydrocarbon Tackifier 20-50 Amorphous Polypropylene 20-70. ________________________________