| 摘要 |
<p>An anaerobic composition for sealing or adhering two surfaces having gaps of more than 100 micrometres between the surfaces which comprises: (i) a room temperature polymerizable (meth)acrylic monomer, (ii) a peroxy free radical initiator, and (iii) an amount effective as an accelerator of a combination of saccharin and at least one onium salt (other than an iodide). Exemplified onium salts are phosphonium salts of the formula IV and quaternary ammonium salts of the formula II.. <CHEM> wherein R<1>, R<2>, R<3> and R<4>, which may be the same or different, are hydrocarbyl, hydrocarbylaryl, aryl or a substituted derivative thereof; X is Cl, Br or F, or a soft anion. The process for sealing or adhering the two surfaces comprises applying the anaerobic composition to at least one of the surfaces and placing the surfaces in an abutting relationship until the composition has cured through the gaps.</p> |
