Acid/oxidizer catalyst system for storage stable, quick-cure phenolic resins of the resole or benzylic ether resole type
AssigneeAshland Oil, Inc.
InventorsGolden F. Watts, Warren L. Robbins
Life of this patent
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Abstract
Disclosed is a catalyst system which improves the cure time of acid-catalyzable resole resins while providing extended shelf life thereof. Broadly, the present invention includes a method for formulating an acid-catalyzed, non-aqueous resole resin composition and to the composition itself. The catalyst system comprises an acid catalyst and an oxidizing agent in an amount adequate for cure in at least about the same time that occurs by use of at least twice the amount of said acid catalyst alone. The shelf life of the catalyzed resole resin is greater with the inventive catalyst system than with an equivalent resole resin containing only the acid catalyst in twice the amount.
Claims38
In a method for heat curing a non-aqueous benzylic ether resole resin, the improvement which comprises using a catalyst system comprising an acid catalyst and an oxidizing agent in an amount adequate for cure in at least about the same time that occurs by use of at least twice the amount of said acid catalyst alone, the shelf life of said catalyzed resole resin being greater with said catalyst system than with said at least twice the amount of said acid catalyst alone.
A heat-curable, acid-catalyzable, non-aqueous benzylic ether resole resin comprising:
- (a) a non-aqueous benzylic ether resole resin;
- and
- (b) a catalyst system comprising an acid catalyst and an oxidizing agent in an amount adequate for cure in at least about the same time that occurs by use of at least twice the amount of said acid catalyst alone, the shelf life of said catalyzed resole resin being greater with said catalyst system than with said at least twice the amount of said acid catalyst alone.
In a method for heat curing in the presence of an acid catalyst a base catalyzed, non-aqueous resole resin, the improvement for extending the shelf life of said resole resin which comprises using a catalyst system consisting essentially of an acid catalyst and an oxidizing agent in an amount adequate to substantially maintain the time that it takes said resole to cure without the presence of said oxidizing agent, the shelf life of said catalyzed resole being greater with said catalyst system by the presence of said oxidizing agent.
A heat-curable, acid-catalyzable, non-aqueous resole resin composition consisting essentially of:
- (a) a base-catalyzed, non-aqueous resole resin;
- and
- (b) a catalyst system comprising an acid catalyst and an oxidizing agent in an amount adequate to substantially maintain the time that it takes said resole resin to cure without the presence of said oxidizing agent, the shelf life of said catalyzed resole resin composition being greater with said catalyst system by the presence of said oxidizing agent.
Dependencies are inferred from the claim text.