Abstract

A method for relining a pipeline includes providing and using a composition that includes (a) a resin crosslinkable by action of a photoinitiator that is activated with actinic light, (b) a resin crosslinkable by action of a co-hardening compound; (c) a photo-initiator compound that can be photoactivated by irradiation with actinic light; and (d) a co-hardener compound added before use that is a semilatent co-hardener or a co-hardener at room temperature. A kit for relining a pipeline according to this method includes (1) a container containing (a), (b) and (c); (2) a container containing (d); (3) a substrate for impregnation with the composition resulting from mixing the contents of container (1) and container (2); and, optionally, (4) a source of actinic light and a generator of a flow of gas or liquid at adjustable pressure.

IPC Classes  ?

• B29C 63/00 - Lining or sheathing, i.e. applying preformed layers or sheathings of plasticsApparatus therefor
• F16L 55/165 - Devices for covering leaks in pipes or hoses, e.g. hose-menders from inside the pipe a pipe being inserted in the damaged section
• B29C 63/34 - Lining or sheathing of internal surfaces using tubular layer or sheathings

Abstract

A method for relining a pipeline includes using a composition of (a) a resin crosslinkable by a photoinitiator activated by an actinic light; (b) a resin that can stay inert or be cross-linked by a co-hardening booster; (c) a photoinitiator compound that is photoactivatable by irradiation with an actinic light source; and d) optionally, a booster/co-hardener compound that acts as a crosslinker of the inert resin to increase the overall mechanical, thermal and chemical strengths of the system. A kit for relining a pipeline with such method includes a first container housing (a), (b) and (c); a second container housing (d), which may be used optionally; a substrate suitable for being impregnated with the composition of the first container alone and optionally with the composition resulting from mixing the contents of the first and the second container; and, optionally, an actinic light source and an adjustable pressure air flow generator.

IPC Classes  ?

• C09J 7/30 - Adhesives in the form of films or foils characterised by the adhesive composition
• C09J 11/08 - Macromolecular additives
• C09J 7/10 - Adhesives in the form of films or foils without carriers
• C09J 5/00 - Adhesive processes in generalAdhesive processes not provided for elsewhere, e.g. relating to primers
• F16L 55/162 - Devices for covering leaks in pipes or hoses, e.g. hose-menders from inside the pipe

Abstract

The invention relates to a method for relining a pipeline using a composition comprising:a) at least one resin crosslinkable by the action of a photoinitiator which can be activated with actinic light,b) at least one resin which can stay inert or be cross-linked by the action of a co-hardening boosterc) at least one photoinitiator compound which is photoactivatable by irradiation with an actinic light source;d) and optionally at least one booster/co-hardener compound which at the same time also acts as a crosslinker of the inert resin to increase the overall mechanical, thermal and chemical strengths of the system.The invention also relates to a kit for relining a pipeline according to said method, comprising:- a first container comprising a), b) and c);- a second container comprising d) which can optionally be used;- a substrate suitable for being impregnated both with the composition of the first container alone and optionally also with the composition resulting from mixing the contents of the first container with the contents of the second container; and optionally- an actinic light source and an adjustable pressure air flow generator.

IPC Classes  ?

• B29C 73/10 - Repairing of articles made from plastics or substances in a plastic state, e.g. of articles shaped or produced by using techniques covered by this subclass or subclass using preformed elements using patches sealing on the surface of the article
• C08J 3/28 - Treatment by wave energy or particle radiation
• C08J 5/24 - Impregnating materials with prepolymers which can be polymerised in situ, e.g. manufacture of prepregs
• C08L 101/12 - Compositions of unspecified macromolecular compounds characterised by physical features, e.g. anisotropy, viscosity or electrical conductivity
• F16L 55/162 - Devices for covering leaks in pipes or hoses, e.g. hose-menders from inside the pipe
• F16L 58/10 - Coatings characterised by the materials used by rubber or plastics

Abstract

The invention relates to a method for relining a pipeline that uses a composition comprising: a) at least one resin that can be crosslinked by the action of a photoinitiator which can be activated with actinic light, b) at least one resin crosslinkable by the action of at least one co-hardening compound; c) at least one photo-initiator compound that can be photoactiveted by irradiation with an actinic light source; to which is added, before use: d) at least one co-hardener compound selected in the group consisting of a semilatent co-hardener and a co-hardener at room temperature. The invention also relates to a kit for relining a pipeline according to this method, comprising: 1) a container comprising a), b) and c); 2) a container comprising d); 3) a substrate suitable to be impregnated with the composition resulting from mixing the contents of the container 1) with the container 2); and eventually 4) a source of actinic light and a generator of a flow of air or other gas or liquid at adjustable pressure.

IPC Classes  ?

• B29C 63/34 - Lining or sheathing of internal surfaces using tubular layer or sheathings
• B29C 63/36 - Lining or sheathing of internal surfaces using tubular layer or sheathings being turned inside out

Abstract

The invention relates to a method for relining a pipeline that uses a composition comprising: a) at least one resin that can be crosslinked by the action of a photoinitiator which can be activated with actinic light, b) at least one resin crosslinkable by the action of at least one co-hardening compound; c) at least one photo-initiator compound that can be photoactiveted by irradiation with an actinic light source; to which is added, before use: d) at least one co-hardener compound selected in the group consisting of a semilatent co-hardener and a co-hardener at room temperature. The invention also relates to a kit for relining a pipeline according to this method, comprising: 1) a container comprising a), b) and c); 2) a container comprising d); 3) a substrate suitable to be impregnated with the composition resulting from mixing the contents of the container 1) with the container 2); and eventually 4) a source of actinic light and a generator of a flow of air or other gas or liquid at adjustable pressure.

IPC Classes  ?

• B29C 63/34 - Lining or sheathing of internal surfaces using tubular layer or sheathings
• B29C 63/36 - Lining or sheathing of internal surfaces using tubular layer or sheathings being turned inside out