Eugene S Zador

46447032, Feb 24, 1987

Mar 12, 1986

6/839243

Wesley R. Kaczmarek - Malta NY
Eugene Zador - Clifton Park NY
Sitaramaiah Ravipati - Colonie NY

Norton Company - Worcester MA

B24D 1100

51401

A coated abrasive which is advantageous for certain applications has at least two distinct layers of abrasive grits: a coarse outer layer and a finer inner layer. The median particle size of the grits in the outer layer is at least 150% of that of the inner layer grits. The grits may be adhered to the backing with adhesives compounded primarily of acrylates and cured by exposure to UV light. A product made in this way is effective for one step fining of plastic ophthalmic lenses.

50115138, Apr 30, 1991

May 31, 1989

7/359164

Eugene Zador - Ballston Lake NY
Shyiguei Hsu - Watervliet NY
Wesley R. Kaczmarek - Ballston Lake NY
Sitaramaiah Ravipati - Latham NY
Stanley Supkis - Averill Park NY
Richard H. Vogel - Saratoga Springs NY

Norton Company - Worcester MA

B24D 1100

51295

A single step fining pad for use in a ophthalmic applications having radiation cured maker and size coats of different hardnesses.

54569753, Oct 10, 1995

Apr 3, 1991

7/681442

Eugene Zador - Clifton Park NY
Dhiraj H. Darjee - Malta NY
Stanley J. Supkis - Sand Lake NY

Norton Company - Worcester MA

B32B 502

428241

This invention relates to the construction of backings for coated abrasive products that avoid curling tendencies during adhesive curing and subsequent steps. Curling of the backing is discouraged by the utilization of at least one finishing material carried by said fabric which comprises the product of a reaction between an unsaturated hexafunctional acrylated urethane oligomer component and an unsaturated carboxyfunctional monomer component. These components are caused to react with one another to form cross linking when exposed to actinic or electron beam radiation.

50144685, May 14, 1991

May 5, 1989

7/347663

Sitaramaiah Ravipati - Latham NY
Eugene Zador - Ballston Lake NY
Wesley R. Kaczmarek - Ballston Lake NY
Ernest A. Coleman - Stamford CT
David Rostoker - Sturbridge MA

Norton Company - Worcester MA

B24B 100

51295

Coated abrasive material for fine finishing applications including second fining ophthalmic application, having patterned surface coating of abrasive grains dispersed in radiation-cured adhesive binder. The patterned surface coating is defined by a plurality of formations of such abrasive/binder each having an inner bottom edge defining an area devoid of coated abrasive, a top edge defining a somewhat larger area devoid of coated abrasive and an inner wall connecting the top and bottom edges.

46421262, Feb 10, 1987

Feb 11, 1985

6/700372

Eugene Zador - Ballston Lake NY
Wesley R. Kaczmarek - Burnt Hills NY
Sitaramaiah Ravipati - Latham NY

Norton Company - Worcester MA

B24D 1102

51295

Previous coated abrasives with adhesives suited to rapid, UV light initiated cure often had intractable curl problems. Therefore, such coated abrasives have been unsuited to precision finishing of workpieces with strict flatness or other curvature requirements, such as read-write heads for magnetic recorders or computer memories. This invention provides coated abrasives, having adhesives with cure initiated by UV light, which are suited to curvature control by the methods used conventionally for magnetic recording media. The preferred adhesive formulations include reaction products of 2-hydroxyethyl acrylate with polyol polyester oligomers capped with isocyanate end groups, alkoxylated diacrylated monomers, and N-vinyl pyrrolidone and other monomers with only one polymerizable unsaturated double bond per molecule, and sometimes also include nonpolymerizable thermoplastic polymers. The adhesives, with abrasives grain dispersed therein, are milled in special mills combining the actions of small milling media with large scale high speed agitation to reduce their viscosity to a workable level for gravure roll coating. The dispersion is then coated on plastic film backings and cured with UV lamps having a high spectral output in the near UV, the backing being kept cool during cure by contact with a cooled metal roll.

55273688, Jun 18, 1996

May 17, 1989

7/355229

Stanley J. Supkis - Sand Lake NY
Eugene Zador - Clifton Park NY
Sitaramaiah Ravipati - Colonie NY
Richard A. Romano - Watervliet NY
Walter A. Yarbrough - Stormstown PA

Norton Company - Worcester MA

B24D 302

51298

A coated abrasive having improved properties of grinding performance and brittleness, said abrasive comprising a backing and an abrasive coating adhered thereon wherein the abrasive coating comprises a suspension containing lapping size abrasive grains and a binder, said binder containing a diacrylated monomer and a triacrylated or higher acrylated monomer.

52212955, Jun 22, 1993

May 11, 1992

7/880768

Eugene Zador - Ballston Lake NY

Norton Company - Worcester MA

C09K 314

51298

Coated abrasives provided with a coating comprising a grinding aid and a binder resin are particularly effective when the grinding aid is an halogenated hydrocarbon.

52865410, Feb 15, 1994

Sep 10, 1992

7/943077

Dhiraj H. Darjee - Ballston Lake NY
Richard W. Kalita - Ballston Lake NY
Gregg M. Bosak - Hoosick Falls NY
Eugene Zador - Ballston Lake NY
William F. McCutcheon - Mission TX

Norton Company - Worcester MA

C09K 314

428 40

Coated abrasive material having a combination backing member. The combination backing member has as a bottom member a conventional backing member substrate used in the manufacture of coated abrasive material such as cylinder paper coated with a polymeric layer. The polymer layer provides a relatively smooth surface for application of the maker coat during manufacture of the coated abrasive material. The coated abrasive member can be used in diverse applications such as the fine finishing of particle board and offhand grinding of automobile body seams.