US4518283A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hardenable synthetic resin composition and its use
Assignee: Hilti AG
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Filing: 1983-07-13
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Granted: 1985-05-21
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Expires: 2003-07-13
Abstract
Abstract A two-component mortar composition for securing stays and for rock stabilization in mining having an unsaturated polyester in one component and a hardener material in the other. The composition comprises a total of 15 to 35 weight percent of unsaturated polyester, 9 to 25 weight percent of reactive diluent, 44 to 66 weight percent of filler, 0.5 to 4 weight percent of thixotropic agent, and 1 to 6 weight percent of a hardener which is a free radical curing catalyst. The composition exhibits desired strength levels and also exhibits the desired securing properties for mortar compositions as well as ease of handling.
Inventors
- 👤 Ludwig Gebauer
- 👤 Hans-Jurgen Irmscher
- 👤 Gusztav Lang
- 👤 Peter Mauthe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 19:59
CPC Classifications
E; E21; E21D; E21D20/00; E21D20/02; E21D20/025; E21D20/026; C; C04; C04B; C04B26/00; C04B26/02; C04B26/10; C04B26/18; C08; C08K; C08K3/00; C08K3/34; F; F16; F16B; F16B13/00; F16B13/14; F16B13/141; F16B13/143; Y; Y02; Y02W; Y02W30/00; Y02W30/50; Y02W30/91; Y10; Y10S; Y10S524/00; Y10S524/906
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
90 words
A method for securing tie bars in bore holes wherein mortar composition is contacted with the tie bar and allowed to harden, the improvement which comprises said composition comprising a total of 15 to 35 weight percent of unsaturated polyester, 9 to 25 weight percent of reactive diluent, 44 to 66 weight percent of filler, 0.5 to 4 weight percent of thixotropic agent, and 1 to 6 weight percent of a hardener composed of a free radical curing catalyst, the percentages being based in each case on the total composition.
Claim 2
Independent Claim
90 words
A method for securing tie bars in bore holes wherein mortar composition is contacted with the tie bar and allowed to harden, the improvement which comprises said composition comprising a total of 15 to 35 weight percent of unsaturated polyester, 9 to 25 weight percent of reactive diluent, 44 to 66 weight percent of filler, 0.5 to 4 weight percent of thixotropic agent, and 1 to 6 weight percent of a hardener composed of a free radical curing catalyst, the percentages being based in each case on the total composition.
Claim 3
Independent Claim
83 words
A method for securing tie bars in bore holes wherein mortar composition is contacted with the tie bar and allowed to harden, the improvement which comprises said composition comprising 20 to 24 weight percent of unsaturated polyester, 12 to 20 weight percent of reactive diluent, 46 to 59 weight percent of filler, 1 to 3 weight percent of a thixotropic agent, and 2.5 and 4.5 weight percent of free radical curing catalyst, the percentages being based in each case on the total composition.
Claim 4
Independent Claim
83 words
A method for securing tie bars in bore holes wherein mortar composition is contacted with the tie bar and allowed to harden, the improvement which comprises said composition comprising 20 to 24 weight percent of unsaturated polyester, 12 to 20 weight percent of reactive diluent, 46 to 59 weight percent of filler, 1 to 3 weight percent of a thixotropic agent, and 2.5 and 4.5 weight percent of free radical curing catalyst, the percentages being based in each case on the total composition.
Claim 5
Independent Claim
83 words
A method for securing tie bars in bore holes wherein mortar composition is contacted with the tie bar and allowed to harden, the improvement which comprises said composition comprising 21 to 21.5 weight percent of unsaturated polyester, 14 to 17 weight percent of reactive diluent, 52 to 57 weight percent of filler, 1 to 2.5 weight percent of a thixotropic agent, and 3 to 4 weight percent of free radical curing catalyst, the percentages being based in each case on the total composition.
Claim 6
Independent Claim
83 words
A method for securing tie bars in bore holes wherein mortar composition is contacted with the tie bar and allowed to harden, the improvement which comprises said composition comprising 21 to 21.5 weight percent of unsaturated polyester, 14 to 17 weight percent of reactive diluent, 52 to 57 weight percent of filler, 1 to 2.5 weight percent of a thixotropic agent, and 3 to 4 weight percent of free radical curing catalyst, the percentages being based in each case on the total composition.
Claim 7
Dependent Claim
26 words
The method of claim 1 wherein the total amount of unsaturated polyester and reactive diluent is 36 to 40 weight percent, based on the total composition.
Claim 8
Dependent Claim
22 words
The method of claim 1 wherein the unsaturated polyester and the reactive diluent are present in a ratio of 2:0.8 to 2.5.
Claim 9
Dependent Claim
22 words
The method of claim 4 wherein the unsaturated polyester and the reactive diluent are present in a ratio of 2:0.8 to 2.5.
Claim 10
Dependent Claim
10 words
The method of claim 5 wherein the ratio is 2:1.5.
Claim 11
Dependent Claim
10 words
The method of claim 6 wherein the ratio is 2:1.5.
Claim 12
Dependent Claim
14 words
The method of claim 1 wherein the unsaturated polyester is an amine-accelerated polyester resin.
Claim 13
Dependent Claim
14 words
The method of claim 1 wherein the reactive diluent is monostyrene or divinyl benzene.
Claim 14
Dependent Claim
10 words
The method of claim 1 wherein the filler is quartz.
Claim 15
Dependent Claim
17 words
The method of claim 11 wherein the quartz has a particle size of 0.1 to 0.6 mm.
Claim 16
Dependent Claim
29 words
The method of claim 1 wherein the mortar composition contains a thixotropic agent selected from the group consisting of pyrogenic silica, kaolin, bentonite, montmorillonite, asbestos and organic fiber materials.
Claim 17
Dependent Claim
15 words
The method of claim 1 wherein the free radical curing catalyst is a peroxide hardener.
Claim 18
Dependent Claim
12 words
The mortar composition of claim 4 wherein the hardener is dibenzoyl peroxide.
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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) | 1988-05-20 | 1988-11-19 | 1989-05-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-05-20 | 1992-11-19 | 1993-05-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-05-20 | 1996-11-19 | 1997-05-21 | $7700.00 | Window Closed / Lapsed |