Patent US5700302A successfully refreshed from Google Patents.
US5700302A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Radiation curable abrasive article with tie coat and method
Assignee: 3M Co
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Filing: 1996-03-15
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Granted: 1997-12-23
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Expires: 2016-03-15
Abstract
Abstract A method of preparing an abrasive article, and the article produced therefrom is provided. The method includes the steps of: providing a backing having a first major surface; coating the first major surface of the backing with a tie coat precursor, wherein the tie coat precursor comprises a first radiation curable component; applying an abrasive slurry to the first major surface of the backing after coating the tie coat precursor thereon, wherein the abrasive slurry comprises a plurality of abrasive particles and a binder precursor, and further wherein the binder precursor comprises a second radiation curable component; at least partially curing the tie coat precursor; and at least partially curing the binder precursor to form an abrasive article, wherein the abrasive article comprises a backing, an abrasive layer, and a tie coat disposed between the backing and the abrasive layer. Preferably, the method provides a structured abrasive article.
Inventors
- 👤 William L. Stoetzel
- 👤 Scott R. Culler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 05:25
CPC Classifications
B; B24; B24D; B24D3/00; B24D3/02; B24D3/20; B24D3/28; B24D11/00; B24D18/00; B24D18/0072
Claims Analysis
Total Claims: 33
Claim 1
Independent Claim
113 words
A method of preparing an abrasive article, the method comprising: (a) providing a backing having a first major surface; (b) coating the first major surface of the backing with a tie coat precursor, wherein the fie coat precursor comprises a first radiation curable component; (c) applying an abrasive slurry to the first major surface of the backing after coating the fie coat precursor thereon, wherein the abrasive slurry comprises a plurality of abrasive particles and a binder precursor, and further wherein the binder precursor comprises a second radiation curable component; (d) at least partially curing the tie coat precursor; and (e) at least partially curing the binder precursor to form an abrasive article.
Claim 2
Independent Claim
113 words
A method of preparing an abrasive article, the method comprising: (a) providing a backing having a first major surface; (b) coating the first major surface of the backing with a tie coat precursor, wherein the fie coat precursor comprises a first radiation curable component; (c) applying an abrasive slurry to the first major surface of the backing after coating the fie coat precursor thereon, wherein the abrasive slurry comprises a plurality of abrasive particles and a binder precursor, and further wherein the binder precursor comprises a second radiation curable component; (d) at least partially curing the tie coat precursor; and (e) at least partially curing the binder precursor to form an abrasive article.
Claim 3
Dependent Claim
35 words
The method of claim 1 wherein the step of at least partially curing the tie coat precursor occurs prior to the step of applying an abrasive slurry to the first major surface of the backing.
Claim 4
Dependent Claim
26 words
The method of claim 2 wherein the step of at least partially curing the tie coat precursor comprises exposing the tie coat precursor to radiation energy.
Claim 5
Dependent Claim
19 words
The method of claim 3 wherein the radiation energy comprises ultraviolet radiation, visible radiation, E-beam radiation, or combinations thereof.
Claim 6
Dependent Claim
28 words
The method of claim 1 wherein the steps of at least partially curing the tie coat precursor and at least partially curing the binder precursor occur substantially simultaneously.
Claim 7
Dependent Claim
38 words
The method of claim 5 wherein the steps of at least partially curing the tie coat precursor and at least partially curing the binder precursor comprise exposing both the tie coat precursor and binder precursor to radiation energy.
Claim 8
Dependent Claim
19 words
The method of claim 6 wherein the radiation energy comprises ultraviolet radiation, visible radiation, E-beam radiation, or combinations thereof.
Claim 9
Dependent Claim
12 words
The method of claim 1 wherein the backing comprises a treated cloth.
Claim 10
Dependent Claim
114 words
The method of claim 1 wherein: (a) the step of applying the abrasive slurry to the backing comprises: (i) providing a production tool having a contacting surface; (ii) applying the abrasive slurry onto the contacting surface of the production tool; and (iii) causing the abrasive slurry on the contacting surface of the production tool to come into contact with the first major surface of the backing; and (b) the step of at least partially curing the binder precursor to form an abrasive article comprises: (i) at least partially curing the binder precursor to form a shaped, handleable structure; and (ii) separating the shaped, handleable structure from the production tool to form an abrasive article.
Claim 11
Dependent Claim
10 words
The method of claim 9 which is a continuous process.
Claim 12
Dependent Claim
22 words
The method of claim 10 wherein the continuous process is carried out at a line speed of at least about 25 meters/minute.
Claim 13
Dependent Claim
15 words
The method of claim 1 wherein the first radiation curable component is an acrylate-functional compound.
Claim 14
Dependent Claim
25 words
The method of claim 12 wherein the tie coat precursor comprises an acrylate monomer and an isocyanurate derivative having at least one pendant acrylate group.
Claim 15
Dependent Claim
15 words
The method of claim 1 wherein the second radiation curable component is an acrylate-functional compound.
Claim 16
Dependent Claim
24 words
The method of claim 14 wherein the binder precursor comprises an acrylate monomer and an isocyanurate derivative having at least one pendant acrylate group.
Claim 17
Dependent Claim
25 words
The method of claim 15 wherein the fie coat precursor comprises an acrylate monomer and an isocyanurate derivative having at least one pendant acrylate group.
Claim 18
Dependent Claim
18 words
The method of claim 16 wherein the tie coat precursor and binder precursor each further comprise a photoinitiator.
Claim 19
Dependent Claim
10 words
An abrasive article made by the method of claim 1.
Claim 20
Dependent Claim
10 words
An abrasive article made by the method of claim 9.
Claim 21
Dependent Claim
10 words
An abrasive article made by the method of claim 17.
Claim 22
Independent Claim
178 words
A method of preparing an abrasive article, the method comprising: (a) providing a treated cloth backing having a first major surface; (b) coating the first major surface of the treated cloth backing with a tie coat precursor, wherein the tie coat precursor comprises a first radiation curable component; (c) providing a radiation energy transmissive production tool having a contacting surface; (d) applying an abrasive slurry onto the contacting surface of the production tool, wherein the abrasive slurry comprises a plurality of abrasive particles and a binder precursor, and further wherein the binder precursor comprises a second radiation curable component; (e) causing the abrasive slurry on the contacting surface of the production tool to come into contact with the first major surface of the backing after coating the tie coat precursor thereon; (f) at least partially curing the tie coat precursor; (g) transmitting radiation energy through the production tool to at least partially cure the binder precursor to form a shaped, handleable structure; and (h) separating the shaped, handleable structure from the production tool to form an abrasive article.
Claim 23
Independent Claim
178 words
A method of preparing an abrasive article, the method comprising: (a) providing a treated cloth backing having a first major surface; (b) coating the first major surface of the treated cloth backing with a tie coat precursor, wherein the tie coat precursor comprises a first radiation curable component; (c) providing a radiation energy transmissive production tool having a contacting surface; (d) applying an abrasive slurry onto the contacting surface of the production tool, wherein the abrasive slurry comprises a plurality of abrasive particles and a binder precursor, and further wherein the binder precursor comprises a second radiation curable component; (e) causing the abrasive slurry on the contacting surface of the production tool to come into contact with the first major surface of the backing after coating the tie coat precursor thereon; (f) at least partially curing the tie coat precursor; (g) transmitting radiation energy through the production tool to at least partially cure the binder precursor to form a shaped, handleable structure; and (h) separating the shaped, handleable structure from the production tool to form an abrasive article.
Claim 24
Dependent Claim
49 words
The method of claim 21 wherein the step of at least partially curing the tie coat precursor is carried out prior to the step of causing the abrasive slurry on the contacting surface of the production tool to come into contact with the first major surface of the backing.
Claim 25
Dependent Claim
26 words
The method of claim 22 wherein the step of at least partially curing the tie coat precursor comprises exposing the tie coat precursor to radiation energy.
Claim 26
Dependent Claim
39 words
The method of claim 21 wherein the step of at least partially curing the tie coat precursor occurs when the step of transmitting energy through the production tool to at least partially cure the binder precursor is carried out.
Claim 27
Dependent Claim
22 words
The method of claim 24 which is a continuous process carried out at a line speed of at least about 25 meters/minute.
Claim 28
Dependent Claim
54 words
An abrasive article comprising: (a) a cloth backing having a first major surface; (b) a radiation cured tie coat on the first major surface of the backing; and (c) an abrasive layer on the radiation cured tie coat, wherein the abrasive layer comprises a plurality of abrasive particles dispersed in a radiation cured binder.
Claim 29
Dependent Claim
54 words
An abrasive article comprising: (a) a cloth backing having a first major surface; (b) a radiation cured tie coat on the first major surface of the backing; and (c) an abrasive layer on the radiation cured tie coat, wherein the abrasive layer comprises a plurality of abrasive particles dispersed in a radiation cured binder.
Claim 30
Dependent Claim
14 words
The article of claim 26 wherein the cloth backing comprises a treated cloth backing.
Claim 31
Dependent Claim
11 words
The article of claim 26 which is a structured abrasive article.
Claim 32
Dependent Claim
33 words
The article of claim 26 wherein the radiation cured tie coat is prepared from a tie coat precursor comprising an acrylate monomer and an isocyanurate derivative having at least one pendant acrylate group.
Claim 33
Dependent Claim
31 words
The article of claim 26 wherein the radiation cured binder is prepared from a binder precursor comprising an acrylate monomer and an isocyanurate derivative having at least one pendant acrylate group.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2000-12-22 | 2001-06-23 | 2001-12-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2004-12-22 | 2005-06-23 | 2005-12-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2008-12-22 | 2009-06-23 | 2009-12-23 | $7700.00 | Window Closed / Lapsed |