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 plastiqueAppareils à cet effet
• B29C 63/34 - Garnissage ou gainage de surfaces internes avec des couches ou des gainages tubulaires
• 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

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 généralProcédés 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 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