US3142081A - Polyurethane reinforced brush - Google Patents
Polyurethane reinforced brush Download PDFInfo
- Publication number
- US3142081A US3142081A US239135A US23913562A US3142081A US 3142081 A US3142081 A US 3142081A US 239135 A US239135 A US 239135A US 23913562 A US23913562 A US 23913562A US 3142081 A US3142081 A US 3142081A
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- US
- United States
- Prior art keywords
- wire
- parts
- polyurethane
- brush
- mold
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 239000004814 polyurethane Substances 0.000 title claims description 23
- 229920002635 polyurethane Polymers 0.000 title claims description 23
- 239000000463 material Substances 0.000 claims description 14
- 239000007787 solid Substances 0.000 claims description 11
- -1 HYDROXYL GROUPS Chemical group 0.000 claims description 8
- 229920005862 polyol Polymers 0.000 claims description 8
- 150000003077 polyols Chemical class 0.000 claims description 8
- 238000005304 joining Methods 0.000 claims description 4
- 230000003014 reinforcing effect Effects 0.000 claims description 4
- 238000005498 polishing Methods 0.000 description 18
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 15
- 239000000203 mixture Substances 0.000 description 15
- 229920000728 polyester Polymers 0.000 description 13
- 229920000570 polyether Polymers 0.000 description 13
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 11
- 239000004721 Polyphenylene oxide Substances 0.000 description 11
- 229920001228 polyisocyanate Polymers 0.000 description 10
- 239000005056 polyisocyanate Substances 0.000 description 10
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 9
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 8
- 125000005442 diisocyanate group Chemical group 0.000 description 7
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 description 6
- DVKJHBMWWAPEIU-UHFFFAOYSA-N toluene 2,4-diisocyanate Chemical compound CC1=CC=C(N=C=O)C=C1N=C=O DVKJHBMWWAPEIU-UHFFFAOYSA-N 0.000 description 6
- XSTXAVWGXDQKEL-UHFFFAOYSA-N Trichloroethylene Chemical compound ClC=C(Cl)Cl XSTXAVWGXDQKEL-UHFFFAOYSA-N 0.000 description 5
- GOOHAUXETOMSMM-UHFFFAOYSA-N Propylene oxide Chemical compound CC1CO1 GOOHAUXETOMSMM-UHFFFAOYSA-N 0.000 description 4
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 4
- 239000002253 acid Substances 0.000 description 4
- 239000003795 chemical substances by application Substances 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 239000002245 particle Substances 0.000 description 4
- 239000011541 reaction mixture Substances 0.000 description 4
- 150000005846 sugar alcohols Polymers 0.000 description 4
- XMNIXWIUMCBBBL-UHFFFAOYSA-N 2-(2-phenylpropan-2-ylperoxy)propan-2-ylbenzene Chemical compound C=1C=CC=CC=1C(C)(C)OOC(C)(C)C1=CC=CC=C1 XMNIXWIUMCBBBL-UHFFFAOYSA-N 0.000 description 3
- PASDCCFISLVPSO-UHFFFAOYSA-N benzoyl chloride Chemical compound ClC(=O)C1=CC=CC=C1 PASDCCFISLVPSO-UHFFFAOYSA-N 0.000 description 3
- 239000004927 clay Substances 0.000 description 3
- MTHSVFCYNBDYFN-UHFFFAOYSA-N diethylene glycol Chemical compound OCCOCCO MTHSVFCYNBDYFN-UHFFFAOYSA-N 0.000 description 3
- IQPQWNKOIGAROB-UHFFFAOYSA-N isocyanate group Chemical group [N-]=C=O IQPQWNKOIGAROB-UHFFFAOYSA-N 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 229920001281 polyalkylene Polymers 0.000 description 3
- ZBBLRPRYYSJUCZ-GRHBHMESSA-L (z)-but-2-enedioate;dibutyltin(2+) Chemical compound [O-]C(=O)\C=C/C([O-])=O.CCCC[Sn+2]CCCC ZBBLRPRYYSJUCZ-GRHBHMESSA-L 0.000 description 2
- DECTVMOFPJKFOZ-UHFFFAOYSA-N 2,6-bis(hydroxymethyl)phenol Chemical class OCC1=CC=CC(CO)=C1O DECTVMOFPJKFOZ-UHFFFAOYSA-N 0.000 description 2
- NLHHRLWOUZZQLW-UHFFFAOYSA-N Acrylonitrile Chemical compound C=CC#N NLHHRLWOUZZQLW-UHFFFAOYSA-N 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 239000004342 Benzoyl peroxide Substances 0.000 description 2
- OMPJBNCRMGITSC-UHFFFAOYSA-N Benzoylperoxide Chemical compound C=1C=CC=CC=1C(=O)OOC(=O)C1=CC=CC=C1 OMPJBNCRMGITSC-UHFFFAOYSA-N 0.000 description 2
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- IAYPIBMASNFSPL-UHFFFAOYSA-N Ethylene oxide Chemical compound C1CO1 IAYPIBMASNFSPL-UHFFFAOYSA-N 0.000 description 2
- 229920001730 Moisture cure polyurethane Polymers 0.000 description 2
- 239000002202 Polyethylene glycol Substances 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- YSMRWXYRXBRSND-UHFFFAOYSA-N TOTP Chemical compound CC1=CC=CC=C1OP(=O)(OC=1C(=CC=CC=1)C)OC1=CC=CC=C1C YSMRWXYRXBRSND-UHFFFAOYSA-N 0.000 description 2
- WNLRTRBMVRJNCN-UHFFFAOYSA-N adipic acid Chemical compound OC(=O)CCCCC(O)=O WNLRTRBMVRJNCN-UHFFFAOYSA-N 0.000 description 2
- 235000019400 benzoyl peroxide Nutrition 0.000 description 2
- 238000009835 boiling Methods 0.000 description 2
- WERYXYBDKMZEQL-UHFFFAOYSA-N butane-1,4-diol Chemical compound OCCCCO WERYXYBDKMZEQL-UHFFFAOYSA-N 0.000 description 2
- 239000003054 catalyst Substances 0.000 description 2
- 239000001913 cellulose Substances 0.000 description 2
- 229920002678 cellulose Polymers 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 239000000945 filler Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 229910052500 inorganic mineral Inorganic materials 0.000 description 2
- 239000012948 isocyanate Substances 0.000 description 2
- 150000002513 isocyanates Chemical class 0.000 description 2
- FPYJFEHAWHCUMM-UHFFFAOYSA-N maleic anhydride Chemical compound O=C1OC(=O)C=C1 FPYJFEHAWHCUMM-UHFFFAOYSA-N 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000011707 mineral Substances 0.000 description 2
- 229920001225 polyester resin Polymers 0.000 description 2
- 239000004645 polyester resin Substances 0.000 description 2
- 229920001223 polyethylene glycol Polymers 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 238000006116 polymerization reaction Methods 0.000 description 2
- CXMXRPHRNRROMY-UHFFFAOYSA-N sebacic acid Chemical compound OC(=O)CCCCCCCCC(O)=O CXMXRPHRNRROMY-UHFFFAOYSA-N 0.000 description 2
- 239000002023 wood Substances 0.000 description 2
- MTZUIIAIAKMWLI-UHFFFAOYSA-N 1,2-diisocyanatobenzene Chemical compound O=C=NC1=CC=CC=C1N=C=O MTZUIIAIAKMWLI-UHFFFAOYSA-N 0.000 description 1
- ALQLPWJFHRMHIU-UHFFFAOYSA-N 1,4-diisocyanatobenzene Chemical compound O=C=NC1=CC=C(N=C=O)C=C1 ALQLPWJFHRMHIU-UHFFFAOYSA-N 0.000 description 1
- SBJCUZQNHOLYMD-UHFFFAOYSA-N 1,5-Naphthalene diisocyanate Chemical compound C1=CC=C2C(N=C=O)=CC=CC2=C1N=C=O SBJCUZQNHOLYMD-UHFFFAOYSA-N 0.000 description 1
- OAWPJCAESLHJEB-UHFFFAOYSA-N 2,6-bis(hydroxymethyl)-3,5-di(propan-2-yl)phenol Chemical compound C(C)(C)C=1C(=C(C(=C(C1)C(C)C)CO)O)CO OAWPJCAESLHJEB-UHFFFAOYSA-N 0.000 description 1
- SBXYKRYOLRFVCR-UHFFFAOYSA-N 2-methyl-1,6-dioxacyclododecane-7,12-dione Chemical compound CC1CCCOC(=O)CCCCC(=O)O1 SBXYKRYOLRFVCR-UHFFFAOYSA-N 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- 239000005057 Hexamethylene diisocyanate Substances 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 239000004677 Nylon Substances 0.000 description 1
- LGRFSURHDFAFJT-UHFFFAOYSA-N Phthalic anhydride Natural products C1=CC=C2C(=O)OC(=O)C2=C1 LGRFSURHDFAFJT-UHFFFAOYSA-N 0.000 description 1
- 229920000297 Rayon Polymers 0.000 description 1
- 238000005591 Swarts synthesis reaction Methods 0.000 description 1
- YKTSYUJCYHOUJP-UHFFFAOYSA-N [O--].[Al+3].[Al+3].[O-][Si]([O-])([O-])[O-] Chemical compound [O--].[Al+3].[Al+3].[O-][Si]([O-])([O-])[O-] YKTSYUJCYHOUJP-UHFFFAOYSA-N 0.000 description 1
- AJDTZVRPEPFODZ-PAMPIZDHSA-J [Sn+4].[O-]C(=O)\C=C/C([O-])=O.[O-]C(=O)\C=C/C([O-])=O Chemical compound [Sn+4].[O-]C(=O)\C=C/C([O-])=O.[O-]C(=O)\C=C/C([O-])=O AJDTZVRPEPFODZ-PAMPIZDHSA-J 0.000 description 1
- 235000011037 adipic acid Nutrition 0.000 description 1
- 239000001361 adipic acid Substances 0.000 description 1
- 125000001931 aliphatic group Chemical group 0.000 description 1
- 125000000217 alkyl group Chemical group 0.000 description 1
- 125000003710 aryl alkyl group Chemical group 0.000 description 1
- 239000010425 asbestos Substances 0.000 description 1
- JHIWVOJDXOSYLW-UHFFFAOYSA-N butyl 2,2-difluorocyclopropane-1-carboxylate Chemical compound CCCCOC(=O)C1CC1(F)F JHIWVOJDXOSYLW-UHFFFAOYSA-N 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000004203 carnauba wax Substances 0.000 description 1
- 235000013869 carnauba wax Nutrition 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- LSXWFXONGKSEMY-UHFFFAOYSA-N di-tert-butyl peroxide Chemical compound CC(C)(C)OOC(C)(C)C LSXWFXONGKSEMY-UHFFFAOYSA-N 0.000 description 1
- 239000012969 di-tertiary-butyl peroxide Substances 0.000 description 1
- CZZYITDELCSZES-UHFFFAOYSA-N diphenylmethane Chemical compound C=1C=CC=CC=1CC1=CC=CC=C1 CZZYITDELCSZES-UHFFFAOYSA-N 0.000 description 1
- PRAKJMSDJKAYCZ-UHFFFAOYSA-N dodecahydrosqualene Natural products CC(C)CCCC(C)CCCC(C)CCCCC(C)CCCC(C)CCCC(C)C PRAKJMSDJKAYCZ-UHFFFAOYSA-N 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000011152 fibreglass Substances 0.000 description 1
- 239000012765 fibrous filler Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- RRAMGCGOFNQTLD-UHFFFAOYSA-N hexamethylene diisocyanate Chemical compound O=C=NCCCCCCN=C=O RRAMGCGOFNQTLD-UHFFFAOYSA-N 0.000 description 1
- 150000002430 hydrocarbons Chemical group 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 239000003112 inhibitor Substances 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 238000005058 metal casting Methods 0.000 description 1
- 239000010445 mica Substances 0.000 description 1
- 229910052618 mica group Inorganic materials 0.000 description 1
- 239000004200 microcrystalline wax Substances 0.000 description 1
- 235000019808 microcrystalline wax Nutrition 0.000 description 1
- 239000012764 mineral filler Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 125000000962 organic group Chemical group 0.000 description 1
- 150000002978 peroxides Chemical class 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920000921 polyethylene adipate Polymers 0.000 description 1
- 229920001451 polypropylene glycol Polymers 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 229920000136 polysorbate Polymers 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 239000002964 rayon Substances 0.000 description 1
- 239000000376 reactant Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229910052895 riebeckite Inorganic materials 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 1
- 229910010271 silicon carbide Inorganic materials 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- ZIBGPFATKBEMQZ-UHFFFAOYSA-N triethylene glycol Chemical class OCCOCCOCCO ZIBGPFATKBEMQZ-UHFFFAOYSA-N 0.000 description 1
- 150000004072 triols Chemical group 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 210000002268 wool Anatomy 0.000 description 1
Images
Classifications
-
- A—HUMAN NECESSITIES
- A46—BRUSHWARE
- A46B—BRUSHES
- A46B13/00—Brushes with driven brush bodies or carriers
- A46B13/001—Cylindrical or annular brush bodies
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S15/00—Brushing, scrubbing, and general cleaning
- Y10S15/03—Matrix
Definitions
- the present invention relates to improvements in metal brushes, such as are used for polishing and cleaning of metal and other articles, and more particularly to an improved wire brush reinforced with polyurethane and methods of preparing the same.
- the improved Wire brush of this invention employs a solid rubbery polyurethane material which surrounds and reinforces the sides of the wire bristles and joins portions spaced from the hub.
- the polyurethane is preferably made by mixing (a) an organic polyisocyanate, such as tolylene diisocyanate, with a polyol of high molecular weight, such as a dihydroxy terminated polyester, a polyalkylene ether glycol or the like with (b) organic bers or suitable llers.
- the polyurethane may be cured using excess polyisocyanate or suitable curing agents such as dicumyl peroxide.
- Objects of the invention are to provide a simple inexpensive polishing wheel which has improved polishing characteristics, and to increase the durability and useful life of reinforced rotary wire brushes.
- FIGURE 1 is a top plan view on a reduced scale of a mold containing a wire brush embodying the present invention
- FIGURE 2 is a vertical sectional view taken on the line 2 2 of FIGURE 1 and on the same scale;
- FIGURE 3 is a fragmentary plan view on a reduced scale of a portion of a brush embodying the present invention.
- FIGURE 4 is a fragmentary vertical sectional view taken on the line 4 4 of FIGURE 3 and on a larger scale.
- FIGURES 3 and 4 show a brush comprising a hub portion 1 having a shaft-receiving opening 2 and a series of locking rings 3 for retaining the wire bristles 4 on the hub.
- the bristles extend radially outwardly from the hub portion 1, but it will be understood that the arrangement of the bristles and the shape of the polishing wheel may be varied considerably.
- the spaces S between the bristles 4 are lled with a solid polymerization product, such as a polyester resin composition or a polyurethane composition of the type described herein. Such resin is solidied in situ by molecular growth or by polymerization so as to enclose all but the end portions of the various wire filaments or bristles.
- FIGURES l and 2 show a mold 11 which may be used to manufacture wire brushes or polishing wheels according to the present invention.
- This mold has a cavity adapted to receive conventional Wire brushes and of such size that the bristles bear against the wall of the cavity.
- the mold has a lower portion 13, a cover 14 and means for fastening the cover 14 to the lower portion of the mold including lugs 15 and nuts 16.
- a suitable gasket 17 is applied on each side of the surface of the hub to form a seal which prevents liquid from entering into the shaft-receiving opening 2.
- Means are provided for applying pressure to seal the space berice tween the exterior surface of the hub 1 and the parts of the mold, including spaced collars 18 and bolt 19.
- the polymerizable composition may be poured through an opening 20 into the mold so as to surround and envelop all of the bristles, a vent 21 being provided to permit escape of air from the mold.
- Excellent reinforced wire brushes may be made in accordance with the present invention by embedding the bristle portion of a wire brush in a solid matrix comprising a rubbery copolymer of linear polyesters.
- linear polyesters usually comprise (a) a polyhydric alcohol, preferably a dihydric alcohol, such as ethylene glycol, diand tri-ethylene glycols, or the like, and (b) a mixture of at least one saturated dibasic acid and at least one unsaturated dibasic acid as disclosed in copending application Serial No. 836,294, filed August 26, 1959, now Patent No. 3,071,795.
- the polyester-encapsulated rotary wire brushes are preferably provided with l to 25 parts of fibrous llers and/ or 1 to 50 parts of mineral llers per 100 parts by weight of polymerizable material.
- the fibrous fillers include natural fibers such as wool and silk; inorganic iibers, such as asbestos and fiber glass; and synthetic iibers such as nylon, Orion, rayon and Saran.
- Suitable mineral fillers include calcium carbonate, aluminum silicate (clays), mica, silica and silicon carbide. The amount of fillers is selected so as to give a pourable mix having the properties needed for a polishing wheel.
- Best results are obtained using a mixture of mineral and iibrous llers including alpha cellulose or finely divided wood cellulose having a particle size of 1 to 100 microns.
- such as Solka-Floc having a particle size of 35 to 90 microns provides a plastic material having exceptional uniformity and consistency.
- Good results can be obtained, for example, using a mixture of 1 to 2O parts of clay filler and 5 to 20 parts of Solka-Floc per 100 parts of polymerizable mixture.
- improved polishing wheels are made by embedding the wire bristles of a rotary wire brush in a polyurethane composition.
- a composition could be made by mixing (a) about 0.9 to 1.5 equivalent Weights of an organic polyisocyanate with about one equivalent weight of a polyol having a molecular weight of at least 500 (preferably at least 2000), such as a dihydroxy-terminated polyester, a polyalkylene ether glycol or the like, with (b) organic bers or suitable llers, and (if excess isocyanate is not used for curing) (c) suitable curing agents, such as dicumyl peroxide, para or meta-substituted 2,6-dimethylol phenol (see Patent No. 3,028,353) or the like.
- suitable curing agents such as dicumyl peroxide, para or meta-substituted 2,6-dimethylol phenol (see Patent No. 3,028,353) or the like.
- the polyurethanes employed in practicing the present invention are prepared by reaction of one equivalent weight of a hydroxy terminated polyester or polyether containing at least 2 terminal hydroxyl groups with about 0.9 to 1.5 equivalent weights of aliphatic or aromatic diisocyanates such as 2,4-toluene diisocyanate, p,p'diisocy anate diphenyl methane, naphthalene-1,5-diisocyanate, hexamethylene diisocyanate, diphenylene diisocyanate, meta phenylene diisocyanate, para phenylene diisocyanate or the like.
- Such trifunctional isocyanates may also be used in part.
- the polyurethane may be cured by excess diisocyanate or by employing various curing agents such as dicumyl peroxide, di-tertiary butyl peroxide and other peroxide curing agents of the general formula R-O-O-R (Where R and R are alkyl, aralkyl or other unsubstituted organic groups) as disclosed, for example in co-pending application Serial No. 694,068, filed November 4, 1957, now Patent No. 2,953,539, or paraor meta-substituted 2,6-di-methylol phenols such as 2,6-dimethylol-3,5-diisopropyl phenol or the like as disclosed, for example, in
- the polyurethane may be made from various polyesters and polyethers (polyols) having a low acid number (i.e., below and preferably below 2) and a molecular weight greater than 500 such as 60/40 poly (ethylene-butylene- 1,4-adipate), 80/ 20 poly (ethylene-propylene adipate), polyethylene adipate or other hydroxy-terminated polyesters disclosed in application Serial No. 694,068 and No. 748,932 or polyallrylene ether glycols, such as polyethylene glycol, polpropylene glycol, mixed polyalxylene ether glycols, such as poly (ethylene-propylene) ether glycol, or other polyethers disclosed in said application Serial No. 748,932.
- polyols polyols having a low acid number (i.e., below and preferably below 2) and a molecular weight greater than 500
- the molecular weight of the polyol is preferably at least 2000 and can be as high as 5000 or even 10,000. Excellent results may be obtained using well-known commercial polyurethane prepolymers.
- Polyether polyurethane prepolymers are generally prepared by reacting polyols, such as polyethylene glycol or the like with a molecular weight of 1,000 to 4,000 and containing 2 to 4 hydroxyl groups with polyisocyanates having 2 NCO groups.
- the prepolymer may, for example, be a polyurethane prepared from polypropylene glycol having a molecular weight of about 2000 and 2,4-toluene diisocyanate or a polyurethane prepared from 2,4-toluene diisocyanate and a propylene oxide adduct of glycerol having an average molecular weight of about 2800 to 3100 and capped with a little ethylene oxide during its manufacture to provide 3 primary hydroxyl radicals.
- the polyurethanes are preferably prepared by reacting a polyhydric alcohol with a polyisocyanate under anhydrous conditions to form a liquid polymer having essentially (l) all hydroxyl or (2) all isocyanate end groups and then curing by adding equivalent amounts of polyisocyanate or polyhydric alcohol, respectively, as is Well known in the art.
- a polishing wheel is provided which will function much better than those polishing wheels known prior to this invention.
- Example I Fifty parts by weight of a polyester resin made by react ing 1 mol of maleic anhydride, 4 mois of phthalic anhydride, 5 mois of sebacic acid and 10.1 mois of diethylene glycol are intimately mixed with 42.5 parts o styrene, 7.5 parts of acrylonitrile, 2.15 parts of a catalyst (50% benzoyl peroxide in tricresyl phosphate), 10.0 parts of Solka-Floc having a particle size of 35 to 90 microns, 7.5 parts of clay ller, and 1.0 parts of dibutyl tin maleate.
- a catalyst 50% benzoyl peroxide in tricresyl phosphate
- Solka-Floc having a particle size of 35 to 90 microns
- 7.5 parts of clay ller 1.0 parts of dibutyl tin maleate.
- the above materials are then deaerated under vacuum and 35 grams thereof are poured into a mold cavity having a diameter of about 3 inches and a depth of about W16 inches.
- a Wire brush of the type shown in the drawings having a diameter of about 3 inches is positioned in the mold, a cover plate is attached, and the entire assembly' is then placed in a conventional hydraulic press having its platens heated to 275 F. The press is closed to contact pressure for l0 minutes and is then opened to remove the completed encapsulated wire brush or polishing wheel. The polishing wheel is then cooled to room temperature.
- the resulting polishing wheel will operate in excess of l0 hours when operated periodically at 3600 r.p.in. against a stationary test bar with a 1000 gram load whereas a similar wheel made without dialkyl tin maleate or similar material will lose its ilexibility rapidly due to surface hardening and will as a result have a much shorter useful life when subjected to the same conditions.
- Example II A reactor which has been flushed with nitrogen is charged with 1 mol of a commercial triol l comprising a 1
- the triol used may be Dow 112-3.
- propylene oxide adduct of glycerol having an average molecular weight of about 2800 to 3000, such triol being prepared by reacting glycerol with propylene oxide to obtain a polyether which is then reacted with ethylene oxide so that the end groups are primary hydroxyl groups, and a minor amount of benzoyl chloride inhibitor (0.03% by weight based on the weight of the triol).
- the mixture of the triol and the benzoyl chloride is agitated 30 minutes, and 3 mols of 80/20 toluene diisocyanate (80% of the 2,4 isomer and 20% of the 2,6 isomer) are then added.
- the reaction mixture is then agitated 2 hours at a ternperature of 25 to 30 C.
- One hundred parts by weight of the resulting prepolymer is then mixed with 26 parts of 1,4-butanediol, and the mixture is deaerated under vacuum.
- the material is then poured into a mold with a wire brush therein as in Example I.
- the mold is then placed in a hydraulic press having a platen temperature of 320"V F., and pressure and heat are maintained for 90 minutes.
- the encapsulated wire brush is then removed from the press and heated for 72 hours at 220 F.
- the resulting polishing wheel can be operated continuously for more than 10 hours at 3600 r.p.m. with a 1000 gram load against a stationary test bar and will operate much better than conventional encapsulated wire brushes.
- Example III A liquid polyester is prepared by heating 1.05 mols of diethyle'ne glycol with l0.2 mois of maleic anhydride and 0.8 mols of adipic acid. The mixture is heated while stirring in a vessel equipped with a reux condenser, said condenser being cooled by lluid maintained at a temperature of about C. and being arranged to permit escape of water vapor but to return higher boiling constituents to the reaction mixture. Heating is continued to maintain boiling conditions until the temperature reaches 225 C. whereupon the reaction mixture is allowed to cool.
- a wire brush having bristles extending radially from its hub is incorporated in the cavity of the mold 11 so as to rest on the inner mold surface 2S, said mold surface having been previously coated with a layer of any suitable mold lubricant (eg, silicone, carnauba waxes, microcrystalline waxes, etc.).
- a layer of any suitable mold lubricant eg, silicone, carnauba waxes, microcrystalline waxes, etc.
- the hub 1 bears against the gasket 17 and the external edges 26 of the bristles bear against the portion 25a of the inner mold surface 2S.
- the iluid solidiiable composition mixed as indicated above is poured while in the liquid state through the opening 20 until it rises within the vent 2l, and it is allowed to remain in the mold at 60 C. until it has completely solidified.
- polishing wheel or brush is then removed from the mold and is mounted on a driven shaft for use in polishing or cleaning metal. It is found that the useful life of such polishing wheel is several times that of similar wheels as described, for example, in United States Patent No. 2,648,084 when operated periodically at a light load such as 1000 grams.
- the present invention greatly increases the life and cutting ability of encapsulated wire brushes without appreciably affecting the ability of the brush to adapt to complex surfaces.
- the polyurethane brush of this invention has remarkable resistance to degradation when operated continuously 3 for long periods of time.
- the polyurethane brush is preferred over the polishing wheel of said copending application Serial No. 836,294.
- the polishing wheel of the latter application would be preferred.
- a wire brush comprising a fastening portion and a plurality of wire bristles extending therefrom, a solid rubbery material substantially completely surrounding and reinforcing the sides of said wire bristles and joining portions spaced from said fastening portion together, said material being a solid linear polyurethane formed by reacting a linear polyol having terminal hydroxyl groups and a molecular weight of at least 500 with an organic diisocyanate.
- a wire brush comprising a fastening portion and a plurality of wire bristles extending therefrom, a solid rubbery material substantially completely surrounding and reinforcing the sides of said Wire bristles and joining portions spaced from said fastening portion together, said material being a solid linear polyester polyurethane formed by reacting a linear hydroxy-terminated polyester with a molecular Weight of at least 500 with an organic polyisocyanate having 2 to 3 functional isocyanate groups, said polyester being the reaction product of a polyhydric alcohol and a polycarboxylic acid.
- a wire brush comprising a fastening portion and a plurality of wire bristles extending therefrom, a solid rubbery material substantially completely surrounding and reinforcing the sides of said wire bristles and joining p0rtions spaced from said fastening portion together, said material being a solid linear polyether polyurethane formed by reacting a linear hydroxy-terminated polyether with a molecular weight of at least 500 with an organic polyisocyanate having 2 to 3 functional isocyanate groups, said polyether consisting of hydrocarbon groups joined by ether oxygen atoms and hydroxyl groups on the ends of the polymer chains.
- polyether is a long-chain linear polyalkylene ether glycol and said polyisocyanate is a diisocyanate copolymerizable therewith.
- polyether is a triol formed by reacting propylene oxide with a simple polyol having 3 to 6 carbon atomsy and 3 hydroxyl groups.
Landscapes
- Polishing Bodies And Polishing Tools (AREA)
- Polyurethanes Or Polyureas (AREA)
Description
July 28, 1964 w. A. HARTZ ErAL POLYURETHANE REINFORCED BRUSH Filed Nov. 21, 1962v NVENTORS uralter .Hartz M ichael Kalmar United States Patent O 3,142,031 PGLYURETHANE REINFORCED BRUSH Walter A. Hartz and Michael liallaur, Cuyahoga Falls,
Ukio, assignors to The General Tire it Rubber Company, Akron, lrio, a corporation of Chio Filed Nov. 21, 1962, Ser. No. 239,135 7 Claims. (Cl. 15-179) The present invention relates to improvements in metal brushes, such as are used for polishing and cleaning of metal and other articles, and more particularly to an improved wire brush reinforced with polyurethane and methods of preparing the same.
The improved Wire brush of this invention employs a solid rubbery polyurethane material which surrounds and reinforces the sides of the wire bristles and joins portions spaced from the hub. The polyurethane is preferably made by mixing (a) an organic polyisocyanate, such as tolylene diisocyanate, with a polyol of high molecular weight, such as a dihydroxy terminated polyester, a polyalkylene ether glycol or the like with (b) organic bers or suitable llers. The polyurethane may be cured using excess polyisocyanate or suitable curing agents such as dicumyl peroxide.
Objects of the invention are to provide a simple inexpensive polishing wheel which has improved polishing characteristics, and to increase the durability and useful life of reinforced rotary wire brushes.
Other objects, uses and advantages of the present invention will become apparent to those skilled in the art from the following description and claims and from the drawings in which:
FIGURE 1 is a top plan view on a reduced scale of a mold containing a wire brush embodying the present invention;
FIGURE 2 is a vertical sectional view taken on the line 2 2 of FIGURE 1 and on the same scale;
FIGURE 3 is a fragmentary plan view on a reduced scale of a portion of a brush embodying the present invention; and
FIGURE 4 is a fragmentary vertical sectional view taken on the line 4 4 of FIGURE 3 and on a larger scale.
Referring more particularly to the drawings in Which like parts are identified by the same numerals throughout the several views, FIGURES 3 and 4 show a brush comprising a hub portion 1 having a shaft-receiving opening 2 and a series of locking rings 3 for retaining the wire bristles 4 on the hub. The bristles extend radially outwardly from the hub portion 1, but it will be understood that the arrangement of the bristles and the shape of the polishing wheel may be varied considerably. The spaces S between the bristles 4 are lled with a solid polymerization product, such as a polyester resin composition or a polyurethane composition of the type described herein. Such resin is solidied in situ by molecular growth or by polymerization so as to enclose all but the end portions of the various wire filaments or bristles.
FIGURES l and 2 show a mold 11 which may be used to manufacture wire brushes or polishing wheels according to the present invention. This mold has a cavity adapted to receive conventional Wire brushes and of such size that the bristles bear against the wall of the cavity. As herein shown, the mold has a lower portion 13, a cover 14 and means for fastening the cover 14 to the lower portion of the mold including lugs 15 and nuts 16. A suitable gasket 17 is applied on each side of the surface of the hub to form a seal which prevents liquid from entering into the shaft-receiving opening 2. Means are provided for applying pressure to seal the space berice tween the exterior surface of the hub 1 and the parts of the mold, including spaced collars 18 and bolt 19. The polymerizable composition may be poured through an opening 20 into the mold so as to surround and envelop all of the bristles, a vent 21 being provided to permit escape of air from the mold.
Excellent reinforced wire brushes may be made in accordance with the present invention by embedding the bristle portion of a wire brush in a solid matrix comprising a rubbery copolymer of linear polyesters. These linear polyesters usually comprise (a) a polyhydric alcohol, preferably a dihydric alcohol, such as ethylene glycol, diand tri-ethylene glycols, or the like, and (b) a mixture of at least one saturated dibasic acid and at least one unsaturated dibasic acid as disclosed in copending application Serial No. 836,294, filed August 26, 1959, now Patent No. 3,071,795.
The polyester-encapsulated rotary wire brushes are preferably provided with l to 25 parts of fibrous llers and/ or 1 to 50 parts of mineral llers per 100 parts by weight of polymerizable material. The fibrous fillers include natural fibers such as wool and silk; inorganic iibers, such as asbestos and fiber glass; and synthetic iibers such as nylon, Orion, rayon and Saran. Suitable mineral fillers include calcium carbonate, aluminum silicate (clays), mica, silica and silicon carbide. The amount of fillers is selected so as to give a pourable mix having the properties needed for a polishing wheel. Best results are obtained using a mixture of mineral and iibrous llers including alpha cellulose or finely divided wood cellulose having a particle size of 1 to 100 microns. such as Solka-Floc having a particle size of 35 to 90 microns provides a plastic material having exceptional uniformity and consistency. Good results can be obtained, for example, using a mixture of 1 to 2O parts of clay filler and 5 to 20 parts of Solka-Floc per 100 parts of polymerizable mixture.
According to the present invention improved polishing wheels are made by embedding the wire bristles of a rotary wire brush in a polyurethane composition. Such a composition could be made by mixing (a) about 0.9 to 1.5 equivalent Weights of an organic polyisocyanate with about one equivalent weight of a polyol having a molecular weight of at least 500 (preferably at least 2000), such as a dihydroxy-terminated polyester, a polyalkylene ether glycol or the like, with (b) organic bers or suitable llers, and (if excess isocyanate is not used for curing) (c) suitable curing agents, such as dicumyl peroxide, para or meta-substituted 2,6-dimethylol phenol (see Patent No. 3,028,353) or the like.
The polyurethanes employed in practicing the present invention are prepared by reaction of one equivalent weight of a hydroxy terminated polyester or polyether containing at least 2 terminal hydroxyl groups with about 0.9 to 1.5 equivalent weights of aliphatic or aromatic diisocyanates such as 2,4-toluene diisocyanate, p,p'diisocy anate diphenyl methane, naphthalene-1,5-diisocyanate, hexamethylene diisocyanate, diphenylene diisocyanate, meta phenylene diisocyanate, para phenylene diisocyanate or the like. Such trifunctional isocyanates may also be used in part.
The polyurethane may be cured by excess diisocyanate or by employing various curing agents such as dicumyl peroxide, di-tertiary butyl peroxide and other peroxide curing agents of the general formula R-O-O-R (Where R and R are alkyl, aralkyl or other unsubstituted organic groups) as disclosed, for example in co-pending application Serial No. 694,068, filed November 4, 1957, now Patent No. 2,953,539, or paraor meta-substituted 2,6-di-methylol phenols such as 2,6-dimethylol-3,5-diisopropyl phenol or the like as disclosed, for example, in
A wood cellulose co-pending application Serial No. 748,932, now U.S. Patent No. 3,028,353,
The polyurethane may be made from various polyesters and polyethers (polyols) having a low acid number (i.e., below and preferably below 2) and a molecular weight greater than 500 such as 60/40 poly (ethylene-butylene- 1,4-adipate), 80/ 20 poly (ethylene-propylene adipate), polyethylene adipate or other hydroxy-terminated polyesters disclosed in application Serial No. 694,068 and No. 748,932 or polyallrylene ether glycols, such as polyethylene glycol, polpropylene glycol, mixed polyalxylene ether glycols, such as poly (ethylene-propylene) ether glycol, or other polyethers disclosed in said application Serial No. 748,932. The molecular weight of the polyol (polyester or polyether) is preferably at least 2000 and can be as high as 5000 or even 10,000. Excellent results may be obtained using well-known commercial polyurethane prepolymers. Polyether polyurethane prepolymers are generally prepared by reacting polyols, such as polyethylene glycol or the like with a molecular weight of 1,000 to 4,000 and containing 2 to 4 hydroxyl groups with polyisocyanates having 2 NCO groups. The prepolymer may, for example, be a polyurethane prepared from polypropylene glycol having a molecular weight of about 2000 and 2,4-toluene diisocyanate or a polyurethane prepared from 2,4-toluene diisocyanate and a propylene oxide adduct of glycerol having an average molecular weight of about 2800 to 3100 and capped with a little ethylene oxide during its manufacture to provide 3 primary hydroxyl radicals.
The polyurethanes are preferably prepared by reacting a polyhydric alcohol with a polyisocyanate under anhydrous conditions to form a liquid polymer having essentially (l) all hydroxyl or (2) all isocyanate end groups and then curing by adding equivalent amounts of polyisocyanate or polyhydric alcohol, respectively, as is Well known in the art. When such polyurethanes are used to encapsulate a wire brush according to the method of this invention, a polishing wheel is provided which will function much better than those polishing wheels known prior to this invention.
Example I Fifty parts by weight of a polyester resin made by react ing 1 mol of maleic anhydride, 4 mois of phthalic anhydride, 5 mois of sebacic acid and 10.1 mois of diethylene glycol are intimately mixed with 42.5 parts o styrene, 7.5 parts of acrylonitrile, 2.15 parts of a catalyst (50% benzoyl peroxide in tricresyl phosphate), 10.0 parts of Solka-Floc having a particle size of 35 to 90 microns, 7.5 parts of clay ller, and 1.0 parts of dibutyl tin maleate.
The above materials are then deaerated under vacuum and 35 grams thereof are poured into a mold cavity having a diameter of about 3 inches and a depth of about W16 inches. A Wire brush of the type shown in the drawings having a diameter of about 3 inches is positioned in the mold, a cover plate is attached, and the entire assembly' is then placed in a conventional hydraulic press having its platens heated to 275 F. The press is closed to contact pressure for l0 minutes and is then opened to remove the completed encapsulated wire brush or polishing wheel. The polishing wheel is then cooled to room temperature.
The resulting polishing wheel will operate in excess of l0 hours when operated periodically at 3600 r.p.in. against a stationary test bar with a 1000 gram load whereas a similar wheel made without dialkyl tin maleate or similar material will lose its ilexibility rapidly due to surface hardening and will as a result have a much shorter useful life when subjected to the same conditions.
Example II A reactor which has been flushed with nitrogen is charged with 1 mol of a commercial triol l comprising a 1 The triol used may be Dow 112-3.
propylene oxide adduct of glycerol having an average molecular weight of about 2800 to 3000, such triol being prepared by reacting glycerol with propylene oxide to obtain a polyether which is then reacted with ethylene oxide so that the end groups are primary hydroxyl groups, and a minor amount of benzoyl chloride inhibitor (0.03% by weight based on the weight of the triol). The mixture of the triol and the benzoyl chloride is agitated 30 minutes, and 3 mols of 80/20 toluene diisocyanate (80% of the 2,4 isomer and 20% of the 2,6 isomer) are then added. The reaction mixture is then agitated 2 hours at a ternperature of 25 to 30 C. to insure thorough mixing and is then heated to and maintained at 110 to 115 C. until the viscosity is 1500 to 2000 centipoises at 73 C. More of the 20 toluene diisocyanate is then added to produce an NCO content of about 9.5%. The mixture is then cooled immediately and benzoyl chloride (0.03% by weight based on the total weight of reactants) is added while the temperature is about to 100 C.
One hundred parts by weight of the resulting prepolymer is then mixed with 26 parts of 1,4-butanediol, and the mixture is deaerated under vacuum. The material is then poured into a mold with a wire brush therein as in Example I. The mold is then placed in a hydraulic press having a platen temperature of 320"V F., and pressure and heat are maintained for 90 minutes. The encapsulated wire brush is then removed from the press and heated for 72 hours at 220 F.
The resulting polishing wheel can be operated continuously for more than 10 hours at 3600 r.p.m. with a 1000 gram load against a stationary test bar and will operate much better than conventional encapsulated wire brushes.
Example III A liquid polyester is prepared by heating 1.05 mols of diethyle'ne glycol with l0.2 mois of maleic anhydride and 0.8 mols of adipic acid. The mixture is heated while stirring in a vessel equipped with a reux condenser, said condenser being cooled by lluid maintained at a temperature of about C. and being arranged to permit escape of water vapor but to return higher boiling constituents to the reaction mixture. Heating is continued to maintain boiling conditions until the temperature reaches 225 C. whereupon the reaction mixture is allowed to cool. About 40 parts by weight of the cooled reaction mixture is mixed with 32 parts of styrene, 13 parts of acrylonitrile, l0 parts of Sellia-Floc having a particle size of 35 to 90 microns, 5 parts of clay iiller, 0.l parts of dibutyl tin maleate, and 2.0 parts of a catalyst (50% benzoyl peroxide in tricresyl phosphate).
A wire brush having bristles extending radially from its hub is incorporated in the cavity of the mold 11 so as to rest on the inner mold surface 2S, said mold surface having been previously coated with a layer of any suitable mold lubricant (eg, silicone, carnauba waxes, microcrystalline waxes, etc.). In the mold the hub 1 bears against the gasket 17 and the external edges 26 of the bristles bear against the portion 25a of the inner mold surface 2S. The iluid solidiiable composition mixed as indicated above is poured while in the liquid state through the opening 20 until it rises within the vent 2l, and it is allowed to remain in the mold at 60 C. until it has completely solidified. The completed polishing wheel or brush is then removed from the mold and is mounted on a driven shaft for use in polishing or cleaning metal. It is found that the useful life of such polishing wheel is several times that of similar wheels as described, for example, in United States Patent No. 2,648,084 when operated periodically at a light load such as 1000 grams.
rThe present invention greatly increases the life and cutting ability of encapsulated wire brushes without appreciably affecting the ability of the brush to adapt to complex surfaces.
The polyurethane brush of this invention has remarkable resistance to degradation when operated continuously 3 for long periods of time. For certain purposes, such as the deburring of metal castings, the polyurethane brush is preferred over the polishing wheel of said copending application Serial No. 836,294. For other purposes, such as the deburring of glass, the polishing wheel of the latter application would be preferred.
Unless the context shows otherwise, the term parts means parts by weight and all percentages are by weight throughout the specication and claims.
This application is a continuation-in-part of our copending application Serial No. 836,294, filed August 26, 1959.
It will be understood that the above description is by way of illustration rather than limitation and that in accordance with the patent statutes, variations and modiiications of the specic methods and articles disclosed herein may be made without departing from the spirit of the invention.
Having described our invention, we claim:
1. In a wire brush comprising a fastening portion and a plurality of wire bristles extending therefrom, a solid rubbery material substantially completely surrounding and reinforcing the sides of said wire bristles and joining portions spaced from said fastening portion together, said material being a solid linear polyurethane formed by reacting a linear polyol having terminal hydroxyl groups and a molecular weight of at least 500 with an organic diisocyanate.
2. In a wire brush comprising a fastening portion and a plurality of wire bristles extending therefrom, a solid rubbery material substantially completely surrounding and reinforcing the sides of said Wire bristles and joining portions spaced from said fastening portion together, said material being a solid linear polyester polyurethane formed by reacting a linear hydroxy-terminated polyester with a molecular Weight of at least 500 with an organic polyisocyanate having 2 to 3 functional isocyanate groups, said polyester being the reaction product of a polyhydric alcohol and a polycarboxylic acid.
3. A combination as defined in claim 2 wherein said polyisocyanate is a diisocyanate and said polyurethane is formed by reacting 0.9 to 1.5 mols of said diisocyanate with each mol of said polyester.
4. In a wire brush comprising a fastening portion and a plurality of wire bristles extending therefrom, a solid rubbery material substantially completely surrounding and reinforcing the sides of said wire bristles and joining p0rtions spaced from said fastening portion together, said material being a solid linear polyether polyurethane formed by reacting a linear hydroxy-terminated polyether with a molecular weight of at least 500 with an organic polyisocyanate having 2 to 3 functional isocyanate groups, said polyether consisting of hydrocarbon groups joined by ether oxygen atoms and hydroxyl groups on the ends of the polymer chains.
5. A combination as delined in claim 4 wherein said polyether is a long-chain linear polyalkylene ether glycol and said polyisocyanate is a diisocyanate copolymerizable therewith.
6. A combination as dened in claim 4 wherein said polyurethane is formed by reacting 0.9 to 1.5 mols of said diisocyanate with each mol of said polyether, and said polyether has a molecular weight of about 2000 to 4000.
7. A combination as dened in claim 4 wherein said polyether is a triol formed by reacting propylene oxide with a simple polyol having 3 to 6 carbon atomsy and 3 hydroxyl groups.
References Cited in the iile of this patent UNITED STATES PATENTS 2,431,921 Cook et al. Dec. 2, 1947 2,625,535 Mastin et al. Jan. 13, 1953 2,648,084 Swart Aug. 11, 1953 2,866,774 Price Dec. 30, 1958 3,036,042 Schmidt May 22, 1962 3,071,795 Hartz et al. Jan. 8, 1963 FOREIGN PATENTS 753,227 Great Britain Iuly 18, 1956
Claims (1)
1. IN A WIRE BRUSH COMPRISING A FASTENING PORTION AND A PLURALITY OF WIRE BRISTLES EXTENDING THEREFROM, A SOLID RUBBERY MATERIAL SUBSTANTIALLY COMPLETELY SURROUNDING AND REINFORCING THE SIDES OF SAID WIRE BRISTLES AND JOINING PORTIONS SPACED FROM SAID FASTENING PORTION TOGETHER, SAID MATERIAL BEING A SOLID LINEAR POLYURETHANE FORMED BY REACTING A LINEAR POLYOL HAVING TERMINAL HYDROXYL GROUPS AND A MOLECULAR WEIGHT OF AT LEAST 500 WITH AN ORGANIC DIISOCYANATE.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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US239135A US3142081A (en) | 1962-11-21 | 1962-11-21 | Polyurethane reinforced brush |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US239135A US3142081A (en) | 1962-11-21 | 1962-11-21 | Polyurethane reinforced brush |
Publications (1)
Publication Number | Publication Date |
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US3142081A true US3142081A (en) | 1964-07-28 |
Family
ID=22900760
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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US239135A Expired - Lifetime US3142081A (en) | 1962-11-21 | 1962-11-21 | Polyurethane reinforced brush |
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US (1) | US3142081A (en) |
Cited By (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3237234A (en) * | 1963-07-24 | 1966-03-01 | Pittsburgh Plate Glass Co | Power driven cup brush |
US3372220A (en) * | 1965-04-12 | 1968-03-05 | Norman H. Stingley | Method of molding a polishing and deburring wheel |
US3387075A (en) * | 1964-05-25 | 1968-06-04 | Wilcox Stanley Robert | Method for the manufacture of domestic strainers |
US3885358A (en) * | 1973-02-20 | 1975-05-27 | Carborundum Co | Abrasive tool and methods of producing same |
US4137594A (en) * | 1977-03-28 | 1979-02-06 | Claude Arnal | Rotary cleaning brushes |
US4525890A (en) * | 1983-03-04 | 1985-07-02 | Henkel Corporation | Paintbrush embedment compound and paintbrush construction and method embodying same |
US4998316A (en) * | 1988-05-03 | 1991-03-12 | Maltarp Kim F | Circular ring shaped brush section for sweeping machine |
US5378051A (en) * | 1989-09-18 | 1995-01-03 | Oy C.E. Lindren Ab | Method of making a brush element for a brush roller |
US20090011135A1 (en) * | 2007-07-06 | 2009-01-08 | Jon Terry Cox | Paint brush with increased ferrule paint reservoir |
US20090007354A1 (en) * | 2007-07-06 | 2009-01-08 | Jon Terry Cox | Paint brush with protective polymer coating |
US8091172B2 (en) | 2007-07-06 | 2012-01-10 | Proform Technologies, Inc. | Paint brush with reinforced ferrule construction |
US11701845B2 (en) * | 2019-09-17 | 2023-07-18 | Nike, Inc. | Method for forming a composite sole structure component |
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US2431921A (en) * | 1944-01-28 | 1947-12-02 | Ici Ltd | Benzoyl peroxide treatment of reaction products of diisocyanates with linear polyesters |
US2625535A (en) * | 1952-09-29 | 1953-01-13 | Wingfoot Corp | Elastomeric diisocyanate modified polyesters |
US2648084A (en) * | 1949-05-04 | 1953-08-11 | Gen Tire & Rubber Co | Reinforced wire brush |
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US3071795A (en) * | 1959-08-26 | 1963-01-08 | Gen Tire & Rubber Co | Reinforced wire brush or wheel |
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US2431921A (en) * | 1944-01-28 | 1947-12-02 | Ici Ltd | Benzoyl peroxide treatment of reaction products of diisocyanates with linear polyesters |
US2648084A (en) * | 1949-05-04 | 1953-08-11 | Gen Tire & Rubber Co | Reinforced wire brush |
US2625535A (en) * | 1952-09-29 | 1953-01-13 | Wingfoot Corp | Elastomeric diisocyanate modified polyesters |
GB753227A (en) * | 1953-06-19 | 1956-07-18 | Ici Ltd | Polyisocyanate modified polyesters |
US2866774A (en) * | 1953-09-23 | 1958-12-30 | Univ Notre Dame | Polyether polyurethane rubber |
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Cited By (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3237234A (en) * | 1963-07-24 | 1966-03-01 | Pittsburgh Plate Glass Co | Power driven cup brush |
US3387075A (en) * | 1964-05-25 | 1968-06-04 | Wilcox Stanley Robert | Method for the manufacture of domestic strainers |
US3372220A (en) * | 1965-04-12 | 1968-03-05 | Norman H. Stingley | Method of molding a polishing and deburring wheel |
US3885358A (en) * | 1973-02-20 | 1975-05-27 | Carborundum Co | Abrasive tool and methods of producing same |
US4137594A (en) * | 1977-03-28 | 1979-02-06 | Claude Arnal | Rotary cleaning brushes |
US4525890A (en) * | 1983-03-04 | 1985-07-02 | Henkel Corporation | Paintbrush embedment compound and paintbrush construction and method embodying same |
US4998316A (en) * | 1988-05-03 | 1991-03-12 | Maltarp Kim F | Circular ring shaped brush section for sweeping machine |
US5378051A (en) * | 1989-09-18 | 1995-01-03 | Oy C.E. Lindren Ab | Method of making a brush element for a brush roller |
US20090011135A1 (en) * | 2007-07-06 | 2009-01-08 | Jon Terry Cox | Paint brush with increased ferrule paint reservoir |
US20090007354A1 (en) * | 2007-07-06 | 2009-01-08 | Jon Terry Cox | Paint brush with protective polymer coating |
US7913348B2 (en) | 2007-07-06 | 2011-03-29 | Proform Technologies, Inc. | Paint brush with increased ferrule paint reservoir |
US8091172B2 (en) | 2007-07-06 | 2012-01-10 | Proform Technologies, Inc. | Paint brush with reinforced ferrule construction |
US8171594B2 (en) | 2007-07-06 | 2012-05-08 | Proform Technologies, Inc. | Paint brush with protective polymer coating |
US11701845B2 (en) * | 2019-09-17 | 2023-07-18 | Nike, Inc. | Method for forming a composite sole structure component |
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