Abrasive tool making process – material – or composition – With synthetic resin
Patent
1994-09-06
1996-01-23
Chin, Edward
Abrasive tool making process, material, or composition
With synthetic resin
51307, 51308, 51309, C09K 314
Patent
active
054862191
ABSTRACT:
Coatable urea-aldehyde binder precursor compositions including a urea-aldehyde resin and a cocatalyst yield more consistent quality coated abrasives. In addition, the compositions have longer pot life and allow curing at lower temperatures. The urea-aldehyde resins have an aldehyde/urea ratio of at least about 1.0, more preferably ranging from about 1.0 to about 2.0, and a free aldehyde content ranging from about 0.1 to about 3.0 weight percent based on weight of total aldehyde. The cocatalyst consists essentially of a Lewis acid and a salt selected from the group consisting of ammonium ion salts and organic amine salts. Methods of making coated and other abrasive articles using the compositions are also described.
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Chu Ellen Y.
Ford Jeffrey E.
Rude Harold E.
Chin Edward
Griswold Gary L.
Gwin Doreen S. L.
Kirn Walter N.
Minnesota Mining and Manufacturing Company
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