Abrégé

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.

Classes IPC  ?

• B29C 63/00 - Garnissage ou gainage, c. à d. application de couches ou de gainages préformés en matière plastique; Appareils à cet effet
• F16L 55/165 - Dispositifs pour aveugler les fuites dans les tuyaux ou manches à partir de l'intérieur du tuyau par introduction d'un tuyau dans la section endommagée
• B29C 63/34 - Garnissage ou gainage de surfaces internes avec des couches ou des gainages tubulaires

Abrégé

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.

Classes IPC  ?

• C09J 7/30 - Adhésifs sous forme de films ou de pellicules caractérisés par la composition de l’adhésif
• C09J 11/08 - Additifs macromoléculaires
• C09J 7/10 - Adhésifs sous forme de films ou de pellicules sans support
• C09J 5/00 - Procédés de collage en général; Procédés de collage non prévus ailleurs, p.ex. relatifs aux amorces
• F16L 55/162 - Dispositifs pour aveugler les fuites dans les tuyaux ou manches à partir de l'intérieur du tuyau

Abrégé

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 booster c) 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.

Classes IPC  ?

• C08L 101/12 - Compositions contenant des composés macromoléculaires non spécifiés caractérisées par des propriétés physiques, p.ex. anisotropie, viscosité ou conductivité électrique
• B29C 73/10 - Réparation d'articles faits de matières plastiques ou de substances à l'état plastique, p.ex. d'objets façonnés ou fabriqués par utilisation de techniques couvertes par la présente sous-classe ou la sous-classe utilisant des éléments préformés utilisant des pastilles d'obturation appliquées à la surface de l'objet
• C08J 3/28 - Traitement par ondes énergétiques ou par rayonnement de particules
• C08J 5/24 - Imprégnation de matériaux avec des prépolymères pouvant être polymérisés en place, p.ex. fabrication des "prepregs"
• F16L 55/162 - Dispositifs pour aveugler les fuites dans les tuyaux ou manches à partir de l'intérieur du tuyau
• F16L 58/10 - Revêtements caractérisés par les matériaux utilisés de caoutchouc ou de matériaux plastiques

Abrégé

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.

Classes IPC  ?

• B29C 63/34 - Garnissage ou gainage de surfaces internes avec des couches ou des gainages tubulaires
• B29C 63/36 - Garnissage ou gainage de surfaces internes avec des couches ou des gainages tubulaires par retournement

Abrégé

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.

Classes IPC  ?

• B29C 63/34 - Garnissage ou gainage de surfaces internes avec des couches ou des gainages tubulaires
• B29C 63/36 - Garnissage ou gainage de surfaces internes avec des couches ou des gainages tubulaires par retournement