Liquid resin composition for abrasive articles
AssigneesSaint-Gobain Abrasives, Inc., Saint-Gobain Abrasifs Technologie Et Services, S.A.S.
InventorsAlix Arnaud, Philippe Espiard, Sandrine Pozzolo
Life of this patent
Estimating the term…
Abstract
The invention relates to a liquid resin composition intended for manufacturing abrasives that comprises at least one novolac resin having a glass transition temperature less than or equal to 60° C., at least one reactive diluent and optionally at least one crosslinking agent. Application of the resin composition for producing abrasive articles, especially bonded abrasives and coated abrasives. It also relates to the abrasive articles comprising abrasive grains connected by such a liquid resin composition.
Claims22
A liquid resin composition, comprising, based on the total weight of the liquid resin composition:
- (I) at least 30 wt % of a novolac resin having a glass transition temperature less than or equal to 60° C., wherein the novolac resin is obtained by reacting formaldehyde and phenol in the presence of an acid catalyst, and wherein the novolac resin contains less than 0.1% by weight of free formaldehyde;
- (II) at least 10 wt % of a reactive diluent, wherein the reactive diluent is a liquid at room temperature and comprises at least one functional group selected from the group consisting of a hydroxy, an aldehyde, an epoxy, an oxazolidine, and a lactone;
- and
- (III) from 20 wt % to 40 wt % of a crosslinking agent,
- wherein the liquid resin composition has a viscosity of less than or equal to 7,000 mPa·s at room temperature.
Dependencies are inferred from the claim text.