Anaerobically hardening adhesives and sealants containing an organic sulfonyl hydrazones
AssigneeHenkel & Cie G.m.b.H.
InventorsWerner Gruber, Joachim Galinke, Jurgen Keil
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Abstract
Organic sulfonyl hydrazones are accelerators for aerostable, anaerobically-setting adhesive compositions. They provide rapid setting of the adhesive with formation of bonds of good strength, and have little adverse effect upon the storage stability of the compositions when access of molecular oxygen is permitted.
Claims19
In an aerostable, anaerobically-setting adhesive composition comprising a polymerizable (meth) acrylate ester as principal latent adhesive component and a peroxide polymerization catalyst therefor:
- a small effective uniformly distributed amount of an organic sulfonyl hydrazone as accelerator for said catalyst.
A method for accelerating the setting rate of an aerostable, anaerobically-setting adhesive composition comprising a polymerizable (meth) acrylate ester as principal latent adhesive component and a peroxide polyermization catalyst therefor, which comprises uniformly incorporating in said composition a small but effective amount of an organic sulfonyl hydrazone as accelerator.
Dependencies are inferred from the claim text.