CUTTING BLADES

Abstract

This subject technology relates to a polymeric composition for application onto substrates, such as stainless steel blades, for lubricity, abrasion resistance, and corrosion resistance. The coatings developed using the subject technology of chemical grafting in one aspect involves the use of prepolymer, monomers, catalysts, graft initiator, wetting agent, fillers and other ingredients of the composition. The coating thus obtained when applied on the stainless steel allows obtaining graft polymerization, thereby forming a polymer film chemically attached to the substrate. The substrate is reacted with graft initiators which create reaction sites on the substrate via a free radical mechanism that renders the substrate receptive to attachment of monomers/prepolymers, thus forming a polymeric film that is chemically bonded to the substrate to achieve the desired properties in terms abrasion, wear, lubricity and other properties.

Claims

1. A method of forming a composition comprising the steps of: combining a first group of constituents; then combining the first group of constituents with a second group of constituents; and then combining the combined first and second group of constituents with a third group of constituents to form the composition.

2. The method of claim 1 wherein, the first group of constituents consists of, a monomer, a wetting agent, a flouro-monomer, a first solvent, a second solvent, a surfactant, an additive for adding hardness, water, and a flouro-chemical; the second group of constituents consists of, a prepolymer, a first catalyst, a surfactant, a solvent, water, and a second catalyst; and the third group of constituents consists of, a catalyst, a monomer, and a graft initiator.

3. The method of claim 2 further comprising the step of: applying the composition to a portion of a stainless-steel blade.

4. The method of claim 3 wherein: the stainless-steel blade is devoid of an aperture formed therein.

5. The method of claim 1 wherein, the first group of constituents consists of, a monomer, a wetting agent, a first flouro-monomer, a solvent, water, and a second flouro-monomer; the second group of constituents consists of, a prepolymer, a first catalyst, a surfactant, a flouro-chemical, a second catalyst, and a solvent; and the third group of constituents consists of, a catalyst, a graft initiator, water.

6. The method of claim 5 further comprising the step of: applying the composition to a portion of a stainless-steel blade.

7. The method of claim 6 wherein: the stainless-steel blade is devoid of an aperture formed therein.

8. The method of claim 1 wherein, the first group of constituents consists of, a monomer, a wetting agent, a first solvent, a second solvent, and a flouro-chemical; the second group of constituents consists of, a prepolymer, a first surfactant, a monomer, a first catalyst, a second surfactant, water, a second catalyst, and a solvent; and the third group of constituents consists of, a catalyst, and a graft initiator.

9. The method of claim 8 further comprising the step of: applying the composition to a portion of a stainless-steel blade.

10. The method of claim 9 wherein: the stainless-steel blade is devoid of an aperture formed therein.

11. The method of claim 1 wherein, the first group of constituents consists of, 1 parts by weight of a monomer, 0.5 parts by weight of a wetting agent, 1 parts by weight of a flouro-monomer, 5 parts by weight of a first solvent, 10 parts by weight of a second solvent, 0.5 parts by weight of a surfactant, 0.75 parts by weight of an additive, 58.75 parts by weight of water, and 62.5 parts by weight of a flouro-chemical; the second group of constituents consists of, 20 parts by weight of a prepolymer, 2 parts by weight of a first catalyst, 0.5 parts by weight of a surfactant, 5 parts by weight of a solvent, 71.5 parts by weight of water, and 1 parts by weight of a second catalyst; and the third group of constituents consists of, 0.1 parts by weight of a catalyst, 0.1 parts by weight of a monomer, and 0.1 parts by weight of a graft initiator.

12. The method of claim 1 wherein, the first group of constituents consists of, 1.5 parts by weight of a monomer, 1 parts by weight of a wetting agent, 1 parts by weight of a first flouro-monomer, 5.5 parts by weight of a solvent, 62.5 parts by weight of water, and 2 parts by weight of a second flouro-monomer; the second group of constituents consists of, 20 parts by weight of a prepolymer, 2 parts by weight of a first catalyst, 0.5 parts by weight of a surfactant, 62.5 parts by weight of a flouro-chemical, 1 parts by weight of a second catalyst, and 4.5 parts by weight of a solvent; and the third group of constituents consists of, 0.1 parts by weight of a catalyst, 0.1 parts by weight of a graft initiator, and 65 parts by weight of water.

13. The method of claim 1 wherein, the first group of constituents consists of, 1 parts by weight of a monomer, 0.5 parts by weight of a wetting agent, 5.5 parts by weight of a first solvent, 10 parts by weight of a second solvent, and 60 parts by weight of a flouro-chemical; the second group of constituents consists of, 20 parts by weight of a prepolymer, 0.5 parts by weight of a first surfactant, 0.5 parts by weight of a monomer, 2 parts by weight of a first catalyst, 0.5 parts by weight of a second surfactant, 72 parts by weight of water, 1 parts by weight of a second catalyst, and 4.5 parts by weight of a solvent; and the third group of constituents consists of, 0.1 parts by weight of a catalyst, and 0.1 parts by weight of a graft initiator.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0094] FIG. 1 Depicts a table of constituents in one aspect of the subject technology.

[0095] FIG. 2 Depicts another table of constituents in one aspect of the subject technology.

[0096] FIG. 3 Depicts another table of constituents in one aspect of the subject technology.

[0097] FIG. 4 Depicts another table of constituents in one aspect of the subject technology.

[0098] FIG. 5 Depicts several blades.

DETAILED DESCRIPTION

[0099] In one aspect of the subject technology, a method of forming a composition comprises the steps of: combining a first group of constituents; then combining the first group of constituents with a second group of constituents; and then combining the combined first and second group of constituents with a third group of constituents to form the composition.

[0100] FIGS. 1 through 4 each depict a table of constituents grouped into A, B, & C groups. It is to be understood that the constituents of FIGS. 1 through 4 can be grouped in different ways, or alternatively not grouped at all, and that the constituents can be mixed in different orders, and that milling, or mixing, of any of the A, B, & C groups, or other groupings, can be performed, and that such compositions thereby formed can be applied to various substrates, with or without curing, all of the foregoing achieving varying compositions and varying results, with varying characteristics.

[0101] In one aspect, for any one of FIGS. 1 through 4, the constituents of the A group are first mixed together, then the constituents of the B group are added to the A group, and the combination of the A & B group are then mixed, then the constituents of the C group are added to the combination of the A & B group and mixed.

[0102] In one aspect, for any one of FIGS. 1 through 4, the constituents of the A group are mixed together, and the constituents of the B group are first mixed together and then added to the A group, and then the combination is mixed; then the constituents of the C group are first mixed together and then added to the combination of the A and B groups, and then the combination is mixed.

[0103] In one aspect, for any one of FIGS. 1 through 4, one or more of the first, second, and third group of constituents, or the combination of the first and second group of constituents, or the third group of constituents combined with the combined first and second group of constituents, are milled on a milling machine to make them homogeneous.

[0104] In one aspect, for any one of FIGS. 1 through 4, the constituents of each of FIGS. 1 through 4 are combined without regard to the A, B, & C groupings of each table.

[0105] In one aspect (FIGS. 1 & 4), the first group of constituents consists of, a monomer, a wetting agent, a flouro-monomer, a first solvent, a second solvent, a surfactant, an additive (e.g. an additive for adding hardness), water, and a flouro-chemical; the second group of constituents consists of, a prepolymer, a first catalyst, a surfactant, a solvent, water, and a second catalyst; and the third group of constituents consists of, a catalyst, a monomer, and a graft initiator.

[0106] In one aspect, the monomers described herein comprise acrylate, vinyl, epoxide metharylate or acrylic. In another aspect, the monomers described herein comprise acrylic, vinyl, and epoxy monomers having functional grouping such as carboxyl, hydroxyl, amino, and ester.

[0107] In one aspect, the catalysts described herein comprise peroxides. In other aspects, the catalysts described herein comprise peroxides of urea, hydrogen, benzoyl or methyl.

[0108] In one aspect, the graft initiators described herein comprise metallic salts. In another aspect, the graft initiators described herein comprise silver nitrate, silver perchlorate, ferrous ammonium sulfate, silver acetate, and copper acetate.

[0109] In one aspect, the compositions of the subject technology are applied to a portion of a stainless-steel blade. FIG. 5 depicts several blades 1, 2, & 3. The various compositions of the subject technology can be applied to such blades by dipping, spraying, or other methods provided the composition is not undesirably affected by such other method.

[0110] In one aspect, a method of the subject technology comprises the step of: first air-drying the stainless-steel blade having one or more of the various compositions of the subject technology as described herein applied thereon for 10 to 15 minutes, and then curing the stainless-steel blade having one or more of the various compositions of the subject technology as described herein applied thereon at 170 degrees Celsius for 30 minutes.

[0111] In one aspect, the stainless-steel blade is devoid of an aperture formed therein. As shown in FIG. 5, the first blade 1 has two apertures 4, whereas second and third blades 2, 3, respectively, are devoid of an aperture. As shown, apertures 4 in one aspect are elongated ovoid, holes disposed entirely through the blade. Unfortunately, such holes weaken the blade and have other undesirable effects, such as, for example, undesirable blade deflection characteristics. It is therefore desirable to mitigate those and other problems apparent to those of skill in the art, by utilizing blades devoid of any such apertures.

[0112] In one aspect (FIG. 2), the first group of constituents consists of, a monomer, a wetting agent, a first flouro-monomer, a solvent, water, and a second flouro-monomer; the second group of constituents consists of, a prepolymer, a first catalyst, a surfactant, a flouro-chemical, a second catalyst, and a solvent; and the third group of constituents consists of, a catalyst, a graft initiator, and water.

[0113] In one aspect (FIG. 3), the first group of constituents consists of, a monomer, a wetting agent, a first solvent, a second solvent, and a flouro-chemical; the second group of constituents consists of, a prepolymer, a first surfactant, a monomer, a first catalyst, a second surfactant, water, a second catalyst, and a solvent; and the third group of constituents consists of, a catalyst, and a graft initiator.

[0114] In one aspect (FIGS. 1 & 4), the first group of constituents consists of, 1 parts by weight of a monomer, 0.5 parts by weight of a wetting agent, 1 parts by weight of a flouro-monomer, 5 parts by weight of a first solvent, 10 parts by weight of a second solvent, 0.5 parts by weight of a surfactant, 0.75 parts by weight of an additive (e.g. an additive for adding hardness), 58.75 parts by weight of water, and 62.5 parts by weight of a flouro-chemical; the second group of constituents consists of, 20 parts by weight of a prepolymer, 2 parts by weight of a first catalyst, 0.5 parts by weight of a surfactant, 5 parts by weight of a solvent, 71.5 parts by weight of water, and 1 parts by weight of a second catalyst; and the third group of constituents consists of, 0.1 parts by weight of a catalyst, 0.1 parts by weight of a monomer, and 0.1 parts by weight of a graft initiator.

[0115] In one aspect (FIG. 2), the first group of constituents consists of, 1.5 parts by weight of a monomer, 1 parts by weight of a wetting agent, 1 parts by weight of a first flouro-monomer, 5.5 parts by weight of a solvent, 62.5 parts by weight of water, and 2 parts by weight of a second flouro-monomer; the second group of constituents consists of, 20 parts by weight of a prepolymer, 2 parts by weight of a first catalyst, 0.5 parts by weight of a surfactant, 62.5 parts by weight of a flouro-chemical, 1 parts by weight of a second catalyst, and 4.5 parts by weight of a solvent; and the third group of constituents consists of, 0.1 parts by weight of a catalyst, 0.1 parts by weight of a graft initiator, and 65 parts by weight of water.

[0116] In one aspect (FIG. 3), the first group of constituents consists of, 1 parts by weight of a monomer, 0.5 parts by weight of a wetting agent, 5.5 parts by weight of a first solvent, 10 parts by weight of a second solvent, and 60 parts by weight of a flouro-chemical; the second group of constituents consists of, 20 parts by weight of a prepolymer, 0.5 parts by weight of a first surfactant, 0.5 parts by weight of a monomer, 2 parts by weight of a first catalyst, 0.5 parts by weight of a second surfactant, 72 parts by weight of water, 1 parts by weight of a second catalyst, and 4.5 parts by weight of a solvent; and the third group of constituents consists of, 0.1 parts by weight of a catalyst, and 0.1 parts by weight of a graft initiator.

[0117] In one aspect (FIG. 1), the first group of constituents consists of, 1 parts by weight of Silicone Polyether Acrylate, 0.5 parts by weight of Tego Wet 280, 1 parts by weight of Dynasylan 1505, 5 parts by weight of Butyl Carbitol, 10 parts by weight of EEP Solvent, 0.5 parts by weight of Triton X-100, 0.75 parts by weight of Polyfluo 523 AL, 58.75 parts by weight of water, and 62.5 parts by weight of Polytetrafluoroethylene (aka Teflon); the second group of constituents consists of, 20 parts by weight of Hycar 26288, 2 parts by weight of Melamine Prepolymer, 0.5 parts by weight of Triton X-100, 5 parts by weight of Butyl Carbitol, 71.5 parts by weight of water, and 1 parts by weight of Multifunctional polycarbodiimide; and the third group of constituents consists of, 0.1 parts by weight of Urea Peroxide 0.1% Solution in water, 0.1 parts by weight of Coatosil 1770, and 0.1 parts by weight of Silver Perchlorate 0.01% Solution in water.

[0118] In one aspect (FIG. 2), the first group of constituents consists of, 1.5 parts by weight of Silicone Polyether Acrylate, 1 parts by weight of Tego Wet 280, 1 parts by weight of Dynasylan 1505, 5.5 parts by weight of Butyl Carbitol, 62.5 parts by weight of water, and 2 parts by weight of Dynasylan 8815; the second group of constituents consists of, 20 parts by weight of Hycar 26288, 2 parts by weight of Melamine Prepolymer, 0.5 parts by weight of Triton X-100, 62.5 parts by weight of Polytetrafluoroethylene, 1 parts by weight of Multifunctional polycarbodiimide, and 4.5 parts by weight of Butyl Carbitol; and the third group of constituents consists of, 0.1 parts by weight of Urea Peroxide 0.1% Solution in water, 0.1 parts by weight of Silver Perchlorate 0.01% Solution in water, and 65 parts by weight of water.

[0119] In one aspect (FIG. 3), the first group of constituents consists of, 1 parts by weight of Silicone Polyether Acrylate, 0.5 parts by weight of Tego Wet 280, 5.5 parts by weight of Butyl Carbitol, 10 parts by weight of EEP Solvent, and 60 parts by weight of Polytetrafluoroethylene; the second group of constituents consists of, 20 parts by weight of Hycar 26288, 0.5 parts by weight of Triton X-100, 0.5 parts by weight of Urethane Acrylate SR 9035, 2 parts by weight of Melamine Prepolymer, 0.5 parts by weight of Triton X-100, 72 parts by weight of water, 1 parts by weight of Multifunctional polycarbodiimide, and 4.5 parts by weight of Butyl Carbitol; and the third group of constituents consists of, 0.1 parts by weight of Urea Peroxide 0.1% Solution in Water, and 0.1 parts by weight of Ferrous Ammonium Sulfate 0.01% Solution in water.

[0120] In one aspect (FIG. 4), the first group of constituents consists of, 1 parts by weight of Silicone Polyether Acrylate, 0.5 parts by weight of Tego Wet 280, 1 parts by weight of Dynasylan 1505, 5 parts by weight of Butyl Carbitol, 10 parts by weight of EEP Solvent, 0.5 parts by weight of Triton X-100, 0.75 parts by weight of Polyfluo 523 AL, 58.75 parts by weight of water, and 62.5 parts by weight of Polytetrafluoroethylene; the second group of constituents consists of, 20 parts by weight of Hycar 26968, 2 parts by weight of Urea Formaldehyde, 0.5 parts by weight of Triton X-100, 5 parts by weight of Butyl Carbitol, 71.5 parts by weight of water, and 1 parts by weight of Polyaziridine CX-100; and the third group of constituents consists of, 0.1 parts by weight of Urea Peroxide 0.1% Solution in water, 0.1 parts by weight of Coatosil 1770, and 0.1 parts by weight of Silver Perchlorate 0.01% Solution in water.

[0121] In one aspect, a composition is applied to a substrate (e.g. stainless-steel blade), the composition comprising an epoxy prepolymer, a phenolic prepolymer, a melamine prepolymer, a pigment, a coupling agent, a thickness agent, a solvent, a monomer, a surfactant, a catalyst, and a graft initiator.

[0122] In one aspect, the monomer used in one or more of the compositions of the subject technology described herein comprises acrylate, vinyl, epoxide metharylate or acrylic. In one aspect, the monomer used in one or more of the compositions of the subject technology described herein comprises acrylic, vinyl, and epoxy monomers having functional grouping such as carboxyl, hydroxyl, amino, and ester.

[0123] In one aspect, the catalyst used in one or more of the compositions of the subject technology described herein comprises peroxide. In one aspect, the catalyst used in one or more of the compositions of the subject technology described herein comprises peroxides of urea, hydrogen, benzoyl or methyl.

[0124] In one aspect, the graft initiator used in one or more of the compositions of the subject technology described herein comprises a metallic salt. In one aspect, the graft initiator used in one or more of the compositions of the subject technology described herein comprises one or more of silver nitrate, silver perchlorate, ferrous ammonium sulfate, silver acetate, and copper acetate.

[0125] In one aspect, a composition is applied to a substrate, the composition comprising solvents, a graft initiator for activation, a catalyst for activating or regenerating the graft initiator, and a first component that has a functional group for reaction and covalent bonding with an active site for the substrate.

[0126] In one aspect, the first component is a dispersible polymer. In one aspect, the dispersible polymer includes at least one functional group (e.g. carboxyl, epoxy, hydroxyl, amino melamine or acrylic). In one aspect, the first component is an epoxy prepolymer, phenolic prepolymer or fluoro prepolymer.

[0127] In one aspect, a composition is applied to a substrate, the composition comprising prepolymer, monomers, catalysts, graft initiator, wetting agent, fillers and other ingredients.

[0128] The invention is in no way limited to the specifics of any particular embodiments and examples disclosed herein. For example, the terms aspect, example, preferably, alternatively, and the like denote features that may be preferable but not essential to include in some embodiments of the invention. In addition, details illustrated or disclosed with respect to any one aspect of the invention may be used with other aspects of the invention. Additional elements and/or steps may be added to various aspects of the invention and/or some disclosed elements and/or steps may be subtracted from various aspects of the invention without departing from the scope of the invention. Singular elements/steps imply plural elements/steps and vice versa. Some steps may be performed serially, in parallel, in a pipelined manner, or in different orders than disclosed herein. Many other variations are possible which remain within the content, scope, and spirit of the invention, and these variations would become clear to those skilled in the art after perusal of this application.