Title: Low density abrasive utilizing isocyanurate resin

Abstract: An improved low-density abrasive of the type wherein abrasive granules are bonded throughout a lofty, porous, compressible, non-woven fibrous web, the fibers bonded to each other and the abrasive granules bonded to the webs by a resin or the fibers of the web being bonded to each other by a first resin and the abrasive granules bonded to the web by a second resin. At least one of the resins employed in the present product is a hard, tough, polyisocyanurate resin having a minimum of 0.5 gram equivalent of isocyanurate per thousand grams of resin, the sum of the urethane plus isocyanurate equivalents being at least 1.3. The resulting product is useful for a wide spectrum of industrial and home abrasives applications.

Do you think this is a good invention? Vote now:

Votes so far: For:(0) Against:(0)
Other info:

Inventors: Johnston, Manley R. (St. Paul, MN, US)

Application Number: 241449
Filing Date: 1972-04-05
Publication_date: 1977-03-08
Assignee: Minnesota Mining and Manufacturing Company (St. Paul, MN)
Primary Class(es): 51/295 51/296, 51/297, 51/298
Other Classes:
US Patent Ref:

2958593	Nov, 1960	Hoover et al.	51/295.
3020139	Feb, 1962	Camp et al.	51/295.
3071554	Jan, 1963	Scott et al.	51/298.
3301644	Jan, 1967	Habib	51/295.
3378398	Apr, 1968	Nottebohm et al.	51/294.
3510283	May, 1970	McGurran	51/295.
3529945	Sep, 1970	Charvat	51/295.

Other Refs:
Primary Examiner: Arnold, Donald J.
Assistant Examiner:
Attorney: Alexander, Sell, Steldt & Delahunt