Other

Norman Lumley

Ruben A Santos

Hendrik H Deuzeman

This specification discloses ecologically desirable, improved binder compositions suitable for bonding fibers. These binders exhibit low pollutant characteristics and improved properties, due to a combination into the binder of aminoplast resins or non phenolic monomeric materials capable of co-condensing with formaldehyde, together with a substantially phenol free, low mono methylolphenol high ortho para di methylol phenol content, water soluble thermosetting phenol formaldehyde resole solution. The phenolic resole resin is made to conform to the desired composition by mixing together a high mole ratio of formaldehyde with phenol and calcium hydroxide with cooling so that very little reaction takes place. The reaction is then allowed to proceed according to a carefully controlled temperature-time cycle without external heat input until substantially all the phenol has reacted to form condensation products and yet the mixture is still infinitely dilutable with water. Such binder compositions may be applied at solids levels of 1% to 80% and contain much lower phenolic resin component than binders of prior art with similar bonding characteristics.

Growing community of inventors

Sarnia, Canada

Norman Lumley