Process for the bonding of films and molded components
AssigneeChemische Werke Huls Aktiengesellschaft
InventorsFritz Baxmann, Albert Frese, Hermann Roben, Jurgen Wolpers
Life of this patent
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Abstract
Films, sheets, molded components and parts of other shaped articles formed from a plastomer or elastomer are bonded together or to a substrate employing as an adhesive an adhesive composition heated to 50.degree.-250.degree. C. and consisting essentially of: A. 5-95% by weight of solid or semi-solid atactic poly-.alpha.-olefin or mixture of poly-.alpha.-olefins having a reduced specific viscosity of 0.05-5.0 dl./g.; B. 95-5% by weight of liquid atactic polyolefin or mixture of polyolefins having a viscosity of 150-1,000,000 cp./20.degree. C.; and C. optionally, up to 50% by weight of filler.
Claims15
In a process for bonding unheated pieces of elastic polymers and thermoplastic polymers in film or shaped form to each other or to a suitable substrate selected from the group consisting of wool, wood, masonry, concrete, glass, metals, polyesters and roofing felt, the improvement which comprises employing as the bonding agent an adhesive composition heated at a temperature of up to 250.degree. C. and consisting essentially of:
- a. 5-95% by weight of a solid or semi-solid atactic poly-.alpha.-olefin or poly-.alpha.-olefin mixture having a reduced specific viscosity of 0.05-5.0 dl./g.;
- b. 95-5% by weight of liquid atactic polybutene or polybutene mixture having a viscosity of 150-1,000,000 cp./20.degree. C. which contains no readily boiling components that boil below 150.degree. C. at 15 mm. Hg pressure;
- and
- c. up to 50% by weight of the adhesive composition of an inert, water insoluble inorganic filler.
An article of manufacture comprising a section of elastomer film bonded to another section of elastomer film or to a substrate selected from the group consisting of wool, wood, masonry, concrete, glass, metals, polyesters and roofing felt by spreading onto an unheated section or substrate an adhesive composition consisting essentially of:
- a. 5-95% by weight of a solid or semi-solid atactic poly-.alpha.-olefin or poly-.alpha.-olefin mixture having a reduced specific viscosity of 0.05-5.0 dl./g.;
- b. 95-5% by weight of liquid atactic polybutene or polybutene mixture having a viscosity of 150-1,000,000 cp./20.degree. C. which contains no readily boiling components that boil below 150.degree. C. at 15 mm. Hg pressure;
- and
- c. up to 50% by weight of the adhesive composition of an inert, water insoluble inorganic filler.
Dependencies are inferred from the claim text.