Polyester/substantially amorphous polyolefin hot-melt adhesive b

Details Polyester/substantially amorphous polyolefin hot-melt adhesive b Polyester/substantially amorphous polyolefin hot-melt adhesive b

1977-07-06

1979-03-27

Lieberman, Allan

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

C08L 6700, C08L 6702, C08L 6706

Patent

active

041465865

ABSTRACT:
This invention relates to blends of polyesters and substantially amorphous polyolefins such as amorphous polypropylene. Even small amounts of substantially amorphous polypropylene (5-10 weight percent) substantially lowers the melt viscosity of polyesters at application temperatures and reduces the temperature required for application of the adhesive blend without deleteriously affecting the bond strengths normally achieved on many substrates including fabrics, plastics, and metals. Blends of polyesters and 5-10% substantially amorphous polyolefins are also non-tacky and can be pelletized and used as pellets without difficulty.

REFERENCES:
patent: 3397169 (1968-08-01), Wilkenson
patent: 3657389 (1972-04-01), Caldwell et al.
patent: 3701760 (1972-10-01), Hagemeyer et al.
patent: 3728212 (1973-04-01), Caldwell et al.
patent: 3923726 (1975-12-01), Benz
patent: 3944516 (1976-03-01), Petke
patent: 3966841 (1976-06-01), Combs
patent: 3969294 (1976-07-01), Papeuchado
patent: 3970709 (1976-07-01), Owston
patent: 3980735 (1976-09-01), Kosaka et al.

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