Phenolic resin composition comprising polymerized ionic groups, abrasive articles and methods
Assignee3M Innovative Properties Company
InventorsGregory P. Sorenson, Thomas J. Nelson, Ilya Gorodisher
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Abstract
A phenolic resin composition is described comprising at least 50 wt.-% of phenolic resin; first polymerized units comprising a cationic group; and second polymerized units comprising an anionic group. The cationic groups are ionically bonded to the anionic groups. The ionic bonding of the cationic group and anionic group of the polymerized units can provide certain complex viscosity and/or tan delta properties. In some embodiments, the phenolic resin composition has a complex viscosity at 65 C of at least 50 Pascal(seconds) and/or has a tan delta at 65 C ranging from 0.5 to 2.5. Abrasive articles and methods of making an abrasive article are also described.
Claims20
A cured phenolic resin composition comprising
- at least 50 wt.-% of cured phenolic resin based on a total weight of organic components of the phenolic resin composition;
- first polymerized units comprising a cationic group and the cationic group is a substituted ammonium compound;
- and
- second polymerized units comprising an anionic group;
- wherein the first polymerized units comprising the cationic group and second polymerized units comprising the anionic group are first and second polymerized units of a copolymer comprising greater than 10 wt. % of polymerized units of acid functional monomer;
- and/or
- wherein a first polymer comprises the cationic group and a second polymer comprises the anionic group;
- and
- wherein a portion of the anionic groups or cationic groups are ionically bonded to an unpolymerized imidazole compound.
An abrasive article comprising abrasive particles at least partially embedded in the cured phenolic resin composition comprising:
- at least 50 wt.-% of cured phenolic resin based on a total weight of organic components of the phenolic resin composition;
- first polymerized units comprising a cationic group and the cationic group is a substituted ammonium compound;
- and
- second polymerized units comprising an anionic group;
- wherein the first polymerized units comprising the cationic group and second polymerized units comprising the anionic group are first and second polymerized units of a copolymer comprising greater than 10 wt. % of polymerized units of acid functional monomer;
- and/or
- wherein a first polymer comprises the cationic group and a second polymer comprises the anionic group.
Dependencies are inferred from the claim text.