| 摘要 |
An anaerobic curable composition, preferably for use as an adhesive or sealant, comprises (i) a (meth)acrylate component, (ii) an anaerobic cure system and (iii) a reaction product of a novolac epoxy resin and an acid of formula XO-C(=O)C(=CH2)R, wherein R is H or CH3, X is H, CH2CH2COOH, or CH2CH2OC(=O)Y and Y is CH2CH2COOH or CH=CHCOOH. The epoxy resin may be a phenol or cresol formaldehyde novolac epoxy resin or a bisphenol or biphenyl formaldehyde novolac epoxy resin. Typically, the reaction product is a novolac vinyl ester. The anaerobic cure system preferably comprises saccharin, toluidines, acetyl phenylhydrazine, or maleic acid and may be present in an amount of 1-10 wt.% based on the total weight of the composition. Methods of preparing the composition and using it to bond two or more substrates are also disclosed. |
