US 6,586,090 B2 · Adhesive tape and substrate for adhesive tape

Abstract

The present invention provides an adhesive tape comprising a substrate and an adhesive layer formed on at least one side of the substrate, wherein the substrate comprises the following Component A, Component B and Component C: Component A: a thermoplastic resin having a carbonyl oxygen atom in the molecular skeleton Component B: a polymer alloy containing an ethylene component and a propylene component Component C: an inorganic metal compound surface-treated with a silane coupling agent but substantially no halogen atom. The adhesive tape and the substrate for the adhesive tape of the present invention are free of generation of dioxin or a toxic gas upon incineration, are superior in flexibility, resistance to thermal deformation, flame resistance and resistance to surface whitening, and show suitable stretchability and mechanical strength.

Claims12

Dependent claims

An adhesive tape comprising a substrate and an adhesive layer formed on at least one side of the substrate, wherein the substrate comprises the following Component A, Component B and Component C but substantially no halogen atom:

Component A:
a thermoplastic resin having a carbonyl oxygen atom in the molecular skeleton
Component B:
a propylene/ethylene copolymer obtained by multi-step polymerization involving two or more steps
Component C:
an inorganic metal compound surface-treated with a silane coupling agent by dry treatment or wet treatment
wherein the Component B has a dynamic storage modulus (E′) at 23° C. of no less than 200 MPa and less than 400 MPa, and a dynamic storage modulus (E′) at 80° C. of not less than 40 MPa and less than 180 MPa, and a dynamic storage modulus (E′) at 120° C. of not less than 12 MPa and less than 70 MPa.

4 more elements

Dependencies are inferred from the claim text.

Adhesive tape and substrate for adhesive tape

Life of this patent

Adhesive tape and substrate for adhesive tape

Life of this patent

Abstract

Claims12