US5250085A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flexible bonded abrasive articles, methods of production and use
Assignee: 3M Co
•
Filing: 1993-01-15
•
Granted: 1993-10-05
•
Expires: 2013-01-15
Abstract
Abstract Bonded abrasive articles and methods of making and using same are presented, the bonded abrasive articles comprising abrasive particles dispersed throughout and adhered within an elastomeric polyurethane binder, at least a portion of the abrasive particles adhered to the polyurethane binder by a silane coupling agent. The silane coupling agent is preferably coated onto the abrasive particles before they are mixed with the uncured polyurethane resin. The articles of the invention exhibit excellent smear- and wear-resistance and provide improved abrasion efficiency.
Inventors
- 👤 Scott M. Mevissen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 04:22
CPC Classifications
B; B24; B24D; B24D3/00; B24D3/02; B24D3/20; B24D3/28; C; C09; C09K; C09K3/00; C09K3/14; C09K3/1409
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
37 words
A bonded abrasive article comprising a plurality of abrasive particles dispersed and adhered within a cured polyurethane resin, at least a portion of said abrasive particles adhered within said cured polyurethane resin by a silane coupling agent.
Claim 2
Dependent Claim
37 words
A bonded abrasive article comprising a plurality of abrasive particles dispersed and adhered within a cured polyurethane resin, at least a portion of said abrasive particles adhered within said cured polyurethane resin by a silane coupling agent.
Claim 3
Dependent Claim
88 words
Article in accordance with claim 1 wherein said silane coupling agents are selected from the group consisting of compounds having the general formula R n SIX.sub.(4-n) wherein: R is independently selected from the group consisting of amine-functional non-hydrolyzable organic radicals having from 1 to about 10 carbon atoms, acrylate-functional non-hydrolyzable organic radicals having from 1 to about 10 carbon atoms, and vinyl-functional non-hydrolyzable organic radicals having from 1 to about 10 carbon atoms; X is a hydrolyzable group; and n is an integer ranging from 1 to 3.
Claim 4
Dependent Claim
23 words
Article in accordance with claim 2 wherein R is an amine functional non-hydrolyzable organic radical having from 1 to about 10 carbon atoms.
Claim 5
Dependent Claim
8 words
Article in accordance with claim 2 wherein n=1.
Claim 6
Dependent Claim
23 words
Article in accordance with claim 2 wherein X is a hydrolyzable group selected from the group consisting of alkoxy, acyloxy, amine, and halogens.
Claim 7
Dependent Claim
12 words
Article in accordance with claim 1 wherein said coupling agent is γ-aminopropyltriethoxysilane.
Claim 8
Dependent Claim
12 words
Article in accordance with claim 1 wherein said coupling agent is N-β(aminoethyl)-γ-aminopropyltrimethoxysilane).
Claim 9
Dependent Claim
22 words
Article in accordance with claim 2 wherein R is an acrylate-functional non-hydrolyzable organic radical having from about 1 to 10 carbon atoms.
Claim 10
Dependent Claim
21 words
Article in accordance with claim 2 wherein R is a vinyl-functional non-hydrolyzable organic radical having from 1 to 10 carbon atoms.
Claim 11
Dependent Claim
34 words
Bonded abrasive composition in accordance with claim 1 wherein said cured polyurethane resin has a glass transition temperature greater than about 10° C. and a glass transition temperature range greater than about 70° C.
Claim 12
Dependent Claim
48 words
Article in accordance with claim 1 wherein said cured polyurethane resin has a number of urethane linkages and a number of urea linkages, wherein the number of urea linkages is at least 50% of a sum of the number of urethane linkages and the number of urea linkages.
Claim 13
Dependent Claim
19 words
Article in accordance with claim 11 wherein said number of urea linkages is at least 90% of said sum.
Claim 14
Independent Claim
66 words
A method of making a bonded abrasive article, the method comprising the steps of: (a) selecting a polyurethane resin precursor composition comprising a polyurethane resin precursor; (b) dispersing within said polyurethane resin precursor composition a plurality of abrasive particles having a coating thereon of a silane coupling agent to form a slurry; and (c) subjecting the slurry to conditions sufficient to cure the polyurethane resin precursor.
Claim 15
Independent Claim
66 words
A method of making a bonded abrasive article, the method comprising the steps of: (a) selecting a polyurethane resin precursor composition comprising a polyurethane resin precursor; (b) dispersing within said polyurethane resin precursor composition a plurality of abrasive particles having a coating thereon of a silane coupling agent to form a slurry; and (c) subjecting the slurry to conditions sufficient to cure the polyurethane resin precursor.
Claim 16
Independent Claim
82 words
A method of making a bonded abrasive article, the method comprising the steps of: (a) selecting a polyurethane resin precursor composition comprising a polyurethane resin precursor and silane coupling agent; (b) dispersing within said polyurethane resin precursor composition a plurality of abrasive particles to form a slurry; and (c) subjecting the slurry to conditions sufficient to cure the polyurethane resin precursor to form a cured polyurethane resin and bond the silane coupling agent to the abrasive particles and the cured polyurethane resin.
Claim 17
Independent Claim
82 words
A method of making a bonded abrasive article, the method comprising the steps of: (a) selecting a polyurethane resin precursor composition comprising a polyurethane resin precursor and silane coupling agent; (b) dispersing within said polyurethane resin precursor composition a plurality of abrasive particles to form a slurry; and (c) subjecting the slurry to conditions sufficient to cure the polyurethane resin precursor to form a cured polyurethane resin and bond the silane coupling agent to the abrasive particles and the cured polyurethane resin.
Claim 18
Independent Claim
74 words
A method of abrading a workpiece with a bonded abrasive article, the article comprising a plurality of abrasive particles dispersed and adhered within a cured polyurethane resin, at least a portion of said abrasive particles adhered within said cured polyurethane resin by a silane coupling agent, the method comprising creating relative movement between the workpiece and the abrasive article while contacting the abrasive article and the workpiece with force sufficient to abrade the workpiece.
Claim 19
Independent Claim
74 words
A method of abrading a workpiece with a bonded abrasive article, the article comprising a plurality of abrasive particles dispersed and adhered within a cured polyurethane resin, at least a portion of said abrasive particles adhered within said cured polyurethane resin by a silane coupling agent, the method comprising creating relative movement between the workpiece and the abrasive article while contacting the abrasive article and the workpiece with force sufficient to abrade the workpiece.
References Cited (Backward Citations)
US2878111A
Cited
US3098370A
Cited
US2972527A
Cited
US3850589A
Cited
US3041156A
Cited
US3423195A
Cited
US3982359A
Cited
GB1245373A
Cited
GB1334920A
Cited
US4011063A
Cited
US4049396A
Cited
US4221572A
Cited
US4264337A
Cited
US4504283A
Cited
US4459779A
Cited
US4581287A
Cited
US4773920A
Cited
US4773920B1
Cited
US4802896A
Cited
US4871376A
Cited
US4933373A
Cited
US4945687A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1996-10-04 | 1997-04-05 | 1997-10-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-10-04 | 2001-04-05 | 2001-10-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-10-04 | 2005-04-05 | 2005-10-05 | $7700.00 | Window Closed / Lapsed |