Patent ID: 9574079
Date: 2017-02-21
CPC Classifications: C08G,C08L,C09J

Claim:
1. A substantially formaldehyde free thermosetting binder composition that is free from added formaldehyde and phenol formaldehyde resins and which does not liberate substantial formaldehyde as a result of drying and/or curing, the composition comprising resorcinol dialdehyde resin from (i) resorcinol and (ii) one or more dialdehyde selected from the group consisting of cyclohexane dicarboxaldehyde, glutaraldehyde, and their mixtures and, further comprising an epoxy functional hydrolysable silane in the amount of from 0.3 to 1.5 wt.%, based on total resin composition solids, the compositions comprising aqueous or non-aqueous systems, wherein in the compositions, the ratio of the number of hydroxyl equivalent groups of the resorcinol to the number of aldehyde equivalent groups of the one or more dialdehyde ranges from 1:1 to 4:1, and, further, wherein when the (ii) one or more dialdehyde is glutaraldehyde the composition further comprises (iii) urea in the amount of from 0 to 10 moles urea per mole of glutaraldehyde.