AU2001285758A1 - Binder for mineral wool products - Google Patents
Binder for mineral wool productsInfo
- Publication number
- AU2001285758A1 AU2001285758A1 AU2001285758A AU2001285758A AU2001285758A1 AU 2001285758 A1 AU2001285758 A1 AU 2001285758A1 AU 2001285758 A AU2001285758 A AU 2001285758A AU 2001285758 A AU2001285758 A AU 2001285758A AU 2001285758 A1 AU2001285758 A1 AU 2001285758A1
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- Australia
- Prior art keywords
- process according
- binder
- carboxylic acid
- acid
- alkanolamine
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Description
BINDER FOR MINERAL WOOL PRODUCTS
The invention relates to a process for providing a binder for mineral fibers, i.e. man made vitreous fibers, for example glass, slag or stone wool, a binder obtainable via such a process, and a mineral wool product comprising such a binder.
Mineral wool products generally comprise mineral fibers bonded together by a cured thermoset polymeric material. One or more streams of molten glass, slag or stone are drawn into fibers and blown into a forming chamber where they are deposited as a web on to a travelling conveyer. The fibers, while airborne in the forming chamber and while still hot are sprayed with a binder. The coated fibrous web is then transported from the chamber to a curing oven where heated air is blown through the mat to cure the binder and rigidly bond the mineral wool fibers together.
Phenol-formaldehyde binders are widely used in the mineral wool industry since they have a low viscosity in the uncured state, yet still form a rigid thermoset polymeric matrix for the mineral fibers when cured.
However the use of phenol formaldehyde binders is becoming increasingly undesirable due to the use and release of environmentally unfavourable chemicals during the process . The use of β-hydroxyalkylamides to cure polycarboxy polymers such as polyacrylic acid in order to provide a binder is known.
A problem with polyacrylics cured by β- hydroxyalkylamides is that mineral wool products bound with such a resin normally exhibit good mechanical properties before ageing, but after exposure to high humidities and increased temperatures, for example above
) t to M μ> u- o U1 o - cπ σ σ.
be a secondary beta-hydroxy alkylamine, preferably an N- substituted alkanolamine selected from the group consisting essentially of, di-ethanolamine, 1- (m) ethyldiethanolamine, n-butyldiethanolamine, 3 -amino-1, 2 -propanediol, 2 -amino-1, 3 , -propanediol , tris (hydroxymethyl) aminomethane, most preferably being diethanolamine .
The mole ratio of the carboxylic acid to the alkanolamine in the binder preferably lies in the range of 0.1-1:1-0.1 and the weight percentage of the carboxylic acid group containing polymer in the binder can lie in the range of 0.5-50, for example 10-40, preferably 15-30, most preferably about 20.
The alkanolamine is preferably firstly heated to around 60 °C, whereafter the carboxylic acid is added and the temperature of this mixture is subsequently raised to about at least 90 °C, preferably a temperature lying in the range of about 95-200, for example about 120-150°C. The carboxylic acid group containing polymer preferably has a molecular weight lying in the ranges of 1000-300000, for example 1000-250000, preferably 1000- 200000 most preferably having a molecular weights of around 60000, around 100000 and around 190000. The carboxylic acid group containing polymer preferably comprises one or more of the following: polyacrylic acid, polymethacrylic acid, polymaleic acid and/or co-polymers thereof, preferably being selected from one or more of the following: - HF-05A, Rohm & Haas,
- Acusole 190, Rohm & Haas,
- Acumer 1510, Rohm & Haas,
- 41.600-2, from the Aldrich Chemical Company Inc . One or more of the following additives can be added to the binder:
- a coupling agent, for example an aminosilane, preferably gamma-aminopropyltriethoxysilane,
- a polymerisation accelerator, a curing accelerator and optionally further standard mineral wool binder additives.
In order to improve the water solubility of the resin a base might be added till a pH up to 7. The base is preferably mixed with a polyacrylic acid and added to the resin reaction mixture after the resin reaction is preferably stopped by water addition. Accordingly, the base can first be added after the resin is prepared. Suitable bases include NH3, DEA, TEA.
Further characteristics are referred to in claims 18-23. ,
In order to improve the ageing constancy properties a silane may be added. The silane usually but is not restricted to be added during the binder preparation or directly (separately) at the line. The amount would normally be in the range from 0,1% to 5% (0,2%-3%). Preferred amount is approximately 1%.
According to further aspects of the present invention there is provided a binder obtainable according to this process, a process for providing a mineral wool product, a mineral wool product and the use of a reaction mixture of an alkanolamine and a carboxylic acid, optionally mixed with a carboxylic acid group containing polymer, as a binder for a mineral wool product.
The invention will now be further illustrated by way of the following examples and results.
Example 1
158 g diethanolamine was placed in a 1-liter glass reactor provided with a double jacket and an agitator. Temperature of the diethanolamine was raised to 60 °C whereafter 99 g adipic acid was added slowly. The temperature was raised to 95 °C. After a reaction time of 1 hour at about 95 °C the reaction was stopped by the addition of 200 g water. The reaction product was a clear, colourless, low viscous liquid, dilutable with water.
Example 2
158 g diethanolamine was placed in a 1-liter glass reactor provided with a double jacket and an agitator. Temperature of the diethanolamine was raised to 60 °C whereafter 175 g adipic acid was added slowly. The temperature was raised to 95 °C. After a reaction time of
1 hour at about 95 °C the reaction was stopped by the addition of 200 g water. The reaction product was a clear, colourless, low viscous liquid, dilutable with water.
Example 3 67,2 g triethanolamine was mixed with 33,0 g adipic acid at room temperature. After the solution had turned clear 60 ml temperate water was added. The mixture was a clear, colourless, low viscous liquid, dilutable in water.
Example 4-6
Resins were made using the same procedure as in example 1. The following amounts of chemicals were used:
Table 1
Example 7
158 g diethanolamine was placed in a 1-liter glass reactor provided with a double jacket and an agitator. The temperature of the diethanolamine was raised to 60 °C whereafter 99 g adipic acid was slowly added. The temperature was subsequently raised to about 130 °C, the temperature being maintained between 128 and 135 °C. After a reaction time of 3 hours the reaction was stopped by the addition of water.
All the produced reaction products in examples 4-7 were clear colourless low viscous liquids, dilutable in water.
Example 8
Preparation and testing of selected binder samples to evaluate the binding strength towards shots with mineral fibre composition (Grit bar test) . As shots are considered unfiberized fiber material with identical composition as the fibers.
Shots with size between 0,25 and 0,5 mm diameter were used to make bars with dimensions 140 mm x 25 mm x 10 mm.
A binder solution was prepared comprising 80% of the resins from examples 1-7 mixed at room temperature with 20% of a commercial polyacrylic resin.
As polyacrylic acids were used the commercial types from Rohm & Haas: HF-05A, Acusole 190 and Acumer
1510, and a polyacrylic acid with an average mole weight of 250.000 (Aldrich Chemical Company Inc. 41.600-2).
For making the bars 90 ml binder solution with 15 % solids content and 0,2 % silane coupling agent of binder solids were mixed with 450 g shots. The coupling agent was gamma- aminopropyltriethoxysilane .
Out of the 450 g shots mixed with binder solution, 8 bars were made which were cured 2 hours at 200 °C in an incubator.
Four of the bars were broken directly (dry strength), the other 4 are placed 3 hours in 80 °C water before they are broken (wet strength) .
The binding strength was determined by breaking the bars in a measuring device, where the clamping length is 100 mm and the velocity of the compressing beam was 10 " mm/min. Using the clamping length, width and thickness of the bars, the bending strength was determined in N/mm2. For comparison a commercial product Primid XL-552 from EMS Chemie AG was used. Primid XL-552 is the reaction product of a dimethylester of adipic acid and diethanolamine, whereby the inventors have shown that 100% Primid is not curable since only free OH-groups are present which do not cross-link. A mixture of 80% primid and 20% PAA yielded a very fast curing time (45s (HF-05) and 20s (Mw 250,000) at 200 °C) but the products have no remaining strength after ageing. The results are shown in table 2.
Table 2
Measurement of curing- times for selected examples
A few droplets of the binder to be examined were placed on a microscope cover glass . The glass was dried in a heating cupboard at 90 °C for 45 min.
After drying the cover glass was placed on a heating stage at 250 °C and while stirred with a piece of metal wire (straightened paper-clips) the time was measured until the binder was cured. The results are shown in table 3.
Table 3 : Results
As polyacrylic acids were used the commercial types from Rohm & Haas: HF-05A, Acusole 190 and Acumerl510, and two pure polyacrylic acids with average mole weights of 2000 and 250,000 respectively (Aldrich Chemical Company Inc. 32,366-7 and 41,600-2)
Example 9
20.8 kg Diethanolamine were transferred to a 80 liter steel reactor provided with an agitator and a heating/cooling jacket and heated to 60 °C. 23.0 kg Adipic
Acid were added to the reactor in 5 portions and the temperature raised to a reaction temperature of 95 °C. After reaction for 1 hour 26.3 kg temperate water were added, whereafter the resin was cooled to room temperature.
The resulting resin was a clear colourless low viscous liquid dilutable with water.
At room temperature 80% of the above resin was mixed with 20% of a commercial Polyacrylic resin from Rohm &. Haas: HF-05.
The produced resin was after mixing with water and addition of 0.2% of a silane coupling agent used as a binder in a production trial on a standard stonewool line. The product produced was a standard slab with a density of 100 kg/m3, 100 mm thickness and with approximately 3% binder content. I As a comparison a trial was made with two commercial polyacrylic resins. HF-05 and QRXP 1513 both from Rohm & Haas. Both resins were diluted with water and added 0.2% of a silane coupling agent. The coupling agent was γ- aminopropyltriethoxysilane .
The mechanical strengths were measured according to EN1607 (delamination strength) . The delamination strength was measured on both unaged and after exposure to high humidity and increased temperature in a climate chamber (70°C/95 RH; aged samples)
Results from the testing are shown in tables 4, 5 and 6 below.
Table 4
Example 10
Table 5
Table 6
Example 11
Resin:
116 kg DEA was transferred to a 400 1 reactor and heated to 60°C and stirred.
! 16.3 kg ADP was added and the mixture heated and reacted at 130°C for 60 minutes. Thereafter cooled to 85°C and added (THPA) 33.8 kg. Thereafter 82.5 kg PTA was added and the temperature raised to 130°C and kept there for 120 minutes.
Thereafter the reaction mixture was cooled to 110°C and 100 kg water added. The temperature stabilised at approx. 50°C.
The mixture was stirred for further 15 minutes until homogenous .
The resin was cooled and transferred to a storage tank. Resin solids content 62.2% determined at 200°C.
Rest monomers 39% DEA of added, 12% THPA of added, 25% PTA of added. Average molweight about 600.
On a sample, a factory trial was carried out, whereby 4% DEA and 25% solids Acumer 1510 calculated on resin solids, 0.4% of sum solids silane and water to 25% solids content, was added and analysed.
Results of factory trial Binder yield 60%
Delamination strength (EN 1607) 13.4 kPa (Terr-enbatts Industri) - Aged 3.6 kPa (70°C/95%RH) Tensile strength 5.5 kPa (Flexi A Batts)
Example 12
Resin
24 kg DEA was transferred to a 80 1 reactor and heated to 60°C and stirred.
6.7 kg ADP was added and the mixture heated and reacted at 130°C for 60 minutes.
Thereafter cooled to 85°C and added 6.9 kg ,' THPA. Thereafter 16.9 kg PTA was added and the temperature raised to 130°C and kept there for 120 minutes . Thereafter the reaction mixture was cooled to
110°C and 20.5 kg water added. The temperature stabilises at approx. 50°C .
The mixture was stirred for further 15 minutes until homogenous. The resin was cooled and transferred to a storage tank.
Resin solids content 63.4% determined at 200°C. Rest monomers 37% DEA of added, 14% THPA of added, 25% PTA of added. Average molweight about 600. On a sample, a factory trial was carried out, whereby 4% DEA and 25% solids Acumer 1510 calculated on resin solids, 0.4% of sum solids silane and water to 25% solids content, was added and analysed.
Results of factory trial Binder yield 70%
Delamination strength (EN 1607) 12.1 kPa (Terr-enbatts Industri) - Aged 4.3 kPa (70°C/95%RH)
The invention is not limited to the above description, the requested rights are determined by the following claims.
Claims (1)
- 1. Process for providing a binder for mineral wool products said process comprising the steps of:- mixing together under reactive conditions a carboxylic acid with an alkanolamine. 2. Process according to claim 1 wherein the carboxylic acid and the alkanolamine are firstly mixed together under reactive conditions to provide a resin, which resin is subsequently mixed with a separate carboxylic acid group containing polymer. 3. Process according to claim 2 wherein the carboxylic acid group containing polymer has a molecular weight lying in the ranges of 1000-300000, for example 1000-250000, preferably 1000-200000 most preferably having a molecular weights of around .60000, around 100000 and around 190000. . Process according to claims 2 or 3 wherein the carboxylic acid group containing polymer comprises a polyacrylic acid, polymethacrylic acid, polymaleic acid and/or co-polymers thereof. 5. Process according to claim 4 wherein the polyacrylic acid is selected from one or more of the following:- HF-05A, from Rohm & Haas,- Acusole 190, Rohm & Haas, - Acumer 1510, Rohm & Haas,- 41.600-2, from the Aldrich Chemical Company Inc.6. Process according to any of the preceding claims wherein the carboxylic acid is a di, tri, or tetra, carboxylic acid having a molecular weight of about 1000 or less, preferably about 500 or less, and most preferably about 200 or less.7. Process according to claim 6 or 7 wherein the carboxylic acid is a di-carboxylic acid having the general formula :COOH - (CR1R2)n - COOH wherein n≥2 and preferably n≥4, and wherein R- and R2 are independently selected from H or a lower alkyl group, preferably a methyl or ethyl group.8. Process according to claim 6 or 7 wherein the carboxylic acid is selected from the group consisting essentially of: adipic acid, citric acid, trimellitic acid, sebacic acid, azelaic acid, and succinic acid and is most preferably adipic acid.9. Process according to any of the preceding claims, wherein the alkanolamine is selected from the group comprising di, and tri-alkanolamines .10. Process according to claim 9 wherein the alkanol amine is a secondary beta-hydroxy alkylamine, and most preferably an N-substituted alkanolamine.11. Process according to claims 9 or 10, wherein the alkanolamine is selected from the group consisting essentially of, di-ethanolamine, 1- (m) ethyldiethanolamine, n-butyldiethanolamine, 3-amino-1, 2-propanediol, 2-amino-1, 3, -propanediol, tris (hydroxymethyl) aminomethane . 12. Process according to any of the preceding claims wherein the alkanolamine is diethanolamine.13. Process according to any of the preceding claims, wherein the mole ratio of the carboxylic acid to the alkanolamine in the binder lies in the range of 0.1- 1:1-0.1.14. Process according to any of the preceding claims, wherein the weight percentage of the carboxylic acid group containing polymer in the binder lies in the range of 0.5-50, for example 10-40, preferably 15-30, most preferably about 20.15. Process according to any of the preceding claims, wherein the alkanolamine is firstly heated to a first predetermined temperature whereafter the carboxylic acid is added and the temperature of this mixture raised to a second predetermined temperature .16. Process according to claim 15 wherein the first temperature is around 60 °C and wherein the second temperature is at least about 90 °C, and preferably lies in the range of about 95-200, for example about 120- 150°C.17. Process according to any of the preceding claims comprising the further step of adding one or more of the following to the binder:- a coupling agent, for example an aminosilane, preferably gamma-aminopropyltriethoxysilane,- a polymerisation accelerator, a curing accelerator and optionally further standard mineral wool binder additives .18. Process according to any of the preceding claims wherein the reaction between the carboxylic acid and the alkanol amine is actively stopped, preferably by adding water to the resin reaction mixture, whereby water is preferably added by upto about 50% more preferably by more than 25% by weight of the resin mixture, preferably by weight of solids in the resin mixture.19. Process according to claim 18, wherein a base is subsequently added to the reaction mixture. 20. Process according to claim 19 wherein the base is selected from the group comprising NH3, diethanol amine (DEA) , triethanolamine (TEA) , optionally mixed with a polyacrylic acid, preferably Acumer 1510 Rohm and Haas, Mw. about 60,000. 21. Process according to claim 20 wherein weight % of base in the resin reaction mixture, preferably the weight % of the base calculated by weight of the solids in the reaction mixture, lies in the range of upto 20%, preferably upto 10%, more preferably 1-5% and most preferably 4% and wherein the base is preferably DEA.22. Process according to any of the claims 19- 21, wherein the weight % of the polyacrylic acid in the mixture lies in the range upto 50%, for example 40%, preferably 30% and most preferably upto 25%.23. Process according to any of the preceding claims further comprising the step of adding a silane,5 preferably in the range of 0.1%-5%, more preferably 0.2%- 3% and most preferably about 1% by weight of the resin reaction mixture, preferably by weight of the resin solids, whereby the silane is most preferably prehydrolysed gamma-aminopropyltriethoxysilane (VS 0 142/Vitco) .24. Binder obtainable according to any of the preceding claims .25. Binder for a mineral wool product comprising the reaction product of an alkanolamine, 5 preferably as defined in any of the claims 9-12, and a carboxylic acid, preferably as defined in any of the claims 6-8.26. Binder according to claim 25 further comprising a carboxylic acid group containing polymer as 0 defined in any of the claims 2-5.27. Binder according to any of the claims 24-26 having a curing time of at most 100, for example 90, preferably at most about 50, for example at most about 45 seconds at 250 °C, most preferably 35 seconds at 250 °C, 5 for example 200 °C.28. Binder according to any of the claims 24-27 having a curing time of at most 100, for example 90, preferably at most about 50, for example at most about 35 seconds at 200 °C.30 29. Binder according to any of the claims 25-28 further comprising a silane as defined in claim 23.30. Process for providing a mineral wool product comprising the steps of contacting mineral fibres with a binder according to any of the preceding claims35 24-29, followed by a curing step.31. Mineral wool product obtainable according to claim 29.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP00202103.8 | 2000-06-16 | ||
EP00202103A EP1164163A1 (en) | 2000-06-16 | 2000-06-16 | Binder for mineral wool products |
PCT/EP2001/006879 WO2001096460A2 (en) | 2000-06-16 | 2001-06-15 | Binder for mineral wool products |
Publications (2)
Publication Number | Publication Date |
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AU2001285758A1 true AU2001285758A1 (en) | 2002-03-14 |
AU2001285758B2 AU2001285758B2 (en) | 2006-07-20 |
Family
ID=8171644
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
AU2001285758A Ceased AU2001285758B2 (en) | 2000-06-16 | 2001-06-15 | Binder for mineral wool products |
AU8575801A Pending AU8575801A (en) | 2000-06-16 | 2001-06-15 | Binder for mineral wool products |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
AU8575801A Pending AU8575801A (en) | 2000-06-16 | 2001-06-15 | Binder for mineral wool products |
Country Status (12)
Country | Link |
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US (2) | US6849683B2 (en) |
EP (2) | EP1164163A1 (en) |
JP (1) | JP2004503643A (en) |
CN (1) | CN1302061C (en) |
AU (2) | AU2001285758B2 (en) |
CA (1) | CA2410180C (en) |
CZ (1) | CZ20024091A3 (en) |
HU (1) | HUP0301498A3 (en) |
PL (1) | PL210069B1 (en) |
RU (1) | RU2291883C2 (en) |
UA (1) | UA81597C2 (en) |
WO (1) | WO2001096460A2 (en) |
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CA3075644A1 (en) | 2017-10-09 | 2019-04-18 | Owens Corning Intellectual Capital, Llc | Aqueous binder compositions |
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EP4013725A1 (en) | 2019-08-16 | 2022-06-22 | ROCKWOOL International A/S | Mineral wool binder |
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EP3835276A1 (en) | 2019-12-10 | 2021-06-16 | Saint-Gobain Isover | Method for producing mineral wool composites |
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EP4310062A3 (en) | 2020-04-03 | 2024-02-14 | Rockwool A/S | Low chloride mineral wool product |
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-
2000
- 2000-06-16 EP EP00202103A patent/EP1164163A1/en not_active Withdrawn
-
2001
- 2001-06-15 AU AU2001285758A patent/AU2001285758B2/en not_active Ceased
- 2001-06-15 HU HU0301498A patent/HUP0301498A3/en unknown
- 2001-06-15 UA UA2002129869A patent/UA81597C2/en unknown
- 2001-06-15 WO PCT/EP2001/006879 patent/WO2001096460A2/en active Application Filing
- 2001-06-15 CZ CZ20024091A patent/CZ20024091A3/en unknown
- 2001-06-15 RU RU2003101103/04A patent/RU2291883C2/en not_active IP Right Cessation
- 2001-06-15 US US10/311,101 patent/US6849683B2/en not_active Expired - Lifetime
- 2001-06-15 JP JP2002510589A patent/JP2004503643A/en active Pending
- 2001-06-15 PL PL360847A patent/PL210069B1/en unknown
- 2001-06-15 CN CNB018111084A patent/CN1302061C/en not_active Expired - Fee Related
- 2001-06-15 CA CA002410180A patent/CA2410180C/en not_active Expired - Fee Related
- 2001-06-15 AU AU8575801A patent/AU8575801A/en active Pending
- 2001-06-15 EP EP01965000.1A patent/EP1290082B1/en not_active Expired - Lifetime
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2005
- 2005-01-28 US US11/045,537 patent/US7459490B2/en not_active Expired - Fee Related
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