US 7,887,925 B2 · Composition for the protection of a shaped article against corrosion

Abstract

The invention relates to a composition for the protection of a shaped article against corrosion, said composition comprising (a) a polyisobutene having a glass transition temperature of less than −20° C. and surface tension of less than 40 mM/m at a temperature above the glass transition temperature of said polyisobutene, (b) a filler material and (c) an anti-oxidant composition. The anti-oxidant composition comprises a primary and/or a secondary anti-oxidant, the primary anti-oxidant being selected from the group consisting of sterically hindered phenol compounds. The invention further relates to a wrapping tape comprising said composition for the protection of a shaped article, a process for the manufacture of said wrapping tape and a process for covering a shaped article with said wrapping tape.

Claims15

Dependent claims

A wrapping tape for the protection of a shaped article against corrosion, wherein the wrapping tape comprises:

(a) a first layer comprising a film, said film comprising a polymer or a copolymer of one or more α-olefins and/or diolefins;
and
(b) a second layer comprising;
a polyisobutene having a glass transition temperature of less than −20° C. and surface tension of less than 40 mN/m at a temperature above the glass transition temperature of said polyisobutene;
a filler material;
and
an anti-oxidant composition, wherein said anti-oxidant composition comprises a sterically hindered phenol compound that is not 2,6-di-t-butyl-4-methylphenol.

4 more elements

Dependencies are inferred from the claim text.

Facts

Application

12/473,120Filed 27 May 2009 · division

Priority

EP 0307721414 Jul 2003

Published

US 2009/0274886 A15 Nov 2009

Granted

15 Feb 2011

Term ends

Not estimatedThe source records don’t support an estimate.

Classification26 codes

B32B 27/08
As the main or only constituent of a layer, which is next to another layer of the same or of a different material: of synthetic resin
B32B 27/20
Characterised by the use of special additives: using fillers, pigments, thixotroping agents
B32B 27/32
Layered products comprising a layer of synthetic resin: comprising polyolefins
C08K 5/005
Organic ingredients according to more than one of the "one dot" groups of C08K5/01 - C08K5/59: stabilisers against oxidation, heat, light, ozone

Family

PCT/NL2004/000510Parent of this division · filed 14 Jul 2004

US 2009/0274886 A1Pre-grant publication · published 5 Nov 2009

Application10/564,516Parent of this division

US 7,608,343 B2Parent of this division

US 2006/0175578 A1Published application

US 7,887,925 B2This patent

From the US filing history. Foreign family members aren’t listed.

Composition for the protection of a shaped article against corrosion

Life of this patent

Composition for the protection of a shaped article against corrosion

Life of this patent

Abstract

Claims15