Method for bonding a thermoplastic piping system without the use of solvent-based adhesives, and associated adhesive without the use of solvents

A cyanoacrylate adhesive for bonding a thermoplastic piping system without the use of solvents, the adhesive comprising:

• at least one cyanoacrylate monomer that polymerizes in the presence of an initiator;
• at least one anionic polymerization inhibitor;
• at least one radical polymerization inhibitor,
• at least one viscosity thickener;
• at least one polymer and/or copolymer dissolved in the cyanoacrylate monomer, wherein the polymer or copolymer is a copolymer of vinyl chloride, and wherein the copolymer of vinyl chloride is a vinyl chloride-vinyl acetate copolymer present between 2% and 30%;
• and
• at least one curing speed adjusting catalyst.

A cyanoacrylate adhesive for bonding a thermoplastic piping system without the use of solvents, wherein the adhesive comprises:

• from 40% to 99% of an ethyl cyanoacrylate that polymerizes in the presence of an initiator;
• from 0.0001% to 1%;
• of at least one of an anionic polymerization inhibitor selected from the group consisting of boron trifluoride etherate complex, methane sulphonic acid and sulphur dioxide;
• from 0.01% to 0.2% hydroquinone as a radical polymerization inhibitor;
• from 0.01% to 20% of a poly(methyl methacrylate) resin comprising from 0.1% to 10%, of a thixotropic agent, as viscosity thickener;
• from 1% to 40% triacetin as a plasticizer to make the monomer elastic;
• and
• from 0.001% to 1% 18-crown-6 as a curing speed adjusting catalyst.