LT3039B - Process for preparing calcium hydrosilicates and articles of them - Google Patents
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- LT3039B LT3039B LTIP167A LTIP167A LT3039B LT 3039 B LT3039 B LT 3039B LT IP167 A LTIP167 A LT IP167A LT IP167 A LTIP167 A LT IP167A LT 3039 B LT3039 B LT 3039B
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- 235000012241 calcium silicate Nutrition 0.000 title claims abstract description 18
- 238000004519 manufacturing process Methods 0.000 title abstract description 12
- 238000000034 method Methods 0.000 claims abstract description 10
- 238000006243 chemical reaction Methods 0.000 claims abstract description 7
- 239000000292 calcium oxide Substances 0.000 claims description 17
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 claims description 17
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 claims description 8
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 7
- 238000002360 preparation method Methods 0.000 claims description 3
- 238000001035 drying Methods 0.000 claims description 2
- 239000000377 silicon dioxide Substances 0.000 claims 1
- 239000003463 adsorbent Substances 0.000 abstract description 4
- 230000015572 biosynthetic process Effects 0.000 abstract description 4
- 238000003786 synthesis reaction Methods 0.000 abstract description 4
- 229910052918 calcium silicate Inorganic materials 0.000 abstract description 3
- 238000001914 filtration Methods 0.000 abstract description 3
- 239000006185 dispersion Substances 0.000 abstract description 2
- 239000000843 powder Substances 0.000 abstract description 2
- JHLNERQLKQQLRZ-UHFFFAOYSA-N calcium silicate Chemical compound [Ca+2].[Ca+2].[O-][Si]([O-])([O-])[O-] JHLNERQLKQQLRZ-UHFFFAOYSA-N 0.000 abstract 2
- 238000009413 insulation Methods 0.000 abstract 2
- 230000004075 alteration Effects 0.000 abstract 1
- 238000010438 heat treatment Methods 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 12
- 229910004298 SiO 2 Inorganic materials 0.000 description 10
- 239000011734 sodium Substances 0.000 description 10
- 239000007787 solid Substances 0.000 description 9
- 239000002699 waste material Substances 0.000 description 9
- 239000004115 Sodium Silicate Substances 0.000 description 8
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 8
- 229910052911 sodium silicate Inorganic materials 0.000 description 8
- 239000000243 solution Substances 0.000 description 7
- 238000003756 stirring Methods 0.000 description 6
- 239000000725 suspension Substances 0.000 description 5
- 239000007864 aqueous solution Substances 0.000 description 4
- 238000000227 grinding Methods 0.000 description 3
- 239000000543 intermediate Substances 0.000 description 3
- 229920003043 Cellulose fiber Polymers 0.000 description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 2
- 238000013019 agitation Methods 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 239000000945 filler Substances 0.000 description 2
- 239000010451 perlite Substances 0.000 description 2
- 235000019362 perlite Nutrition 0.000 description 2
- IRPGOXJVTQTAAN-UHFFFAOYSA-N 2,2,3,3,3-pentafluoropropanal Chemical compound FC(F)(F)C(F)(F)C=O IRPGOXJVTQTAAN-UHFFFAOYSA-N 0.000 description 1
- 229910016569 AlF 3 Inorganic materials 0.000 description 1
- KLZUFWVZNOTSEM-UHFFFAOYSA-K Aluminum fluoride Inorganic materials F[Al](F)F KLZUFWVZNOTSEM-UHFFFAOYSA-K 0.000 description 1
- 229920000049 Carbon (fiber) Polymers 0.000 description 1
- 229910000519 Ferrosilicon Inorganic materials 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 1
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 1
- 229910052788 barium Inorganic materials 0.000 description 1
- DSAJWYNOEDNPEQ-UHFFFAOYSA-N barium atom Chemical compound [Ba] DSAJWYNOEDNPEQ-UHFFFAOYSA-N 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 239000000378 calcium silicate Substances 0.000 description 1
- OYACROKNLOSFPA-UHFFFAOYSA-N calcium;dioxido(oxo)silane Chemical compound [Ca+2].[O-][Si]([O-])=O OYACROKNLOSFPA-UHFFFAOYSA-N 0.000 description 1
- 239000004917 carbon fiber Substances 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 239000012774 insulation material Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 1
- 239000011490 mineral wool Substances 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000000741 silica gel Substances 0.000 description 1
- 229910002027 silica gel Inorganic materials 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 229910052938 sodium sulfate Inorganic materials 0.000 description 1
- 235000011152 sodium sulphate Nutrition 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000000606 toothpaste Substances 0.000 description 1
Landscapes
- Silicates, Zeolites, And Molecular Sieves (AREA)
Abstract
Description
Žinomas smulkiadispersinių kalcio hidrosilikatų gavimo būdas reaguojant kalcio oksidui su amorfinio silicio oksido tirpalu ir gauto produkto išdžiovinimu (JP paraiška 54-10357, 1973). Gaunami hidrosilikatiniai produktai naudojami kaip tarpiniai produktai termoizoliacinių medžiagų gamyboje, o taip pat kaip užpildai arba adsorbentai. Šio kalcio hidrosilikatų gavimo būdo trūkumas yra didelės energijos sąnaudos.A method for preparing fine dispersion calcium hydrosilicates by reacting calcium oxide with amorphous silica solution and drying the resulting product is known (JP application 54-10357, 1973). The resulting hydrosilicate products are used as intermediates in the production of thermal insulation materials, and as fillers or adsorbents. The disadvantage of this method of obtaining calcium hydrosilicates is the high energy cost.
Artimiausias pateiktam išradimui gaunamu rezultatu ir techniniu sprendimu yra kalcio oksido ir amorfinio silicio dioksido tirpalo - 1 - 5 vai trukmės reakcija 50-100°C temperatūroje (DE paraiška 2402670, 1978). Šio . kalcio hidrosilikatų gavimo būdo trūkumas yra proceso aukšta temperatūra.The closest result of the present invention and technical solution is a 1-5 hour reaction of a solution of calcium oxide and amorphous silica at 50-100 ° C (DE application 2402670, 1978). For this. the disadvantage of the method for obtaining calcium hydrosilicates is the high temperature of the process.
Išradimo tikslas yra energijos sąnaudų mažinimas. Tai pasiekiama kalcio oksidui CaO reaguojant su amorfinio silicio dioksidu SiO2 vandeniniu tirpalu, kuriame yraThe object of the invention is to reduce energy consumption. This is achieved by reacting CaO with CaO with an aqueous solution of amorphous silica SiO 2 containing
0,1-20 % natrio silikato Na2SiO3 n H2O skaičiuojant nuo sausų - medžiagų masės, 25-100°C temperatūroje, laike . 0,5-24 vai, esant CaO ir SiO2 moliniam santykiui 0,21,8 ir esant vandens - kietų medžiagų santykiui 3,0-20.0.1-20% sodium silicate Na 2 SiO 3 n H 2 O on a dry - mass basis at 25 to 100 ° C over time. 0.5-24 h at a molar ratio of CaO to SiO 2 of 0.21,8 and at a water to solid ratio of 3.0-20.
Šis kalcio hidrosilikatų gavimo būdas skiriasi nuo aukščiau nurodytų gavimo būdų proceso žemesneThis process for the preparation of calcium hydrosilicates is different from the above process for the preparation of the lower
ir intenšifikatdriaus Na2SiO3 n H2O 2 panaudojimu reakcijoje. Gaunamo produkto lyginamasis paviršius yra S=120-160 m2/g, kas užtikrina geras adsorbcines ir filtracines savybes.and the use of an intensifier Na 2 SiO 3 n H 2 O 2 in the reaction. The resulting product has a comparative surface of S = 120-160 m 2 / g, which provides good adsorption and filtration properties.
CaO ir SiO2 molinis santykis daugiau 0,7 yra tikslingas gaunant adsorbcines ir filtruojančius miltelius, o taip pat tarpinį produktą termoizoliacinių ir izoliaciniuakustinių dirbinių gamyboje. Mažesnis molinis santykis yra tikslingas gaminant -gydomas dantų pastas, chemines valymo priemones ir kaip komponentus maisto pramonėje.A molar ratio of CaO to SiO 2 of more than 0.7 is appropriate for the production of adsorbent and filtering powders, as well as an intermediate in the production of thermo-insulating and insulating acoustic articles. A lower molar ratio is expedient in the manufacture of curative toothpastes, dry cleaners and as components in the food industry.
Pateikta kalcio hidrosilikatų technologinė gamybos :schemaDozatoriuose (1, 2, .3, 4)· sintezės komponentai yra atitinkamai susveriami. Sintezė vykdoma reaktoriuje (5). Gauti kalcio hidrosilikatai per tarpinę talpą (6) patenka į plaušintuvą (7)·. Čia vyksta armavimas celiuliozės plaušu, perlitu ir kt. Liejimo formose (8) suspensija įgauna atitinkamą konfigūraciją. Plokščių gamybos filtruose (9) ji yra supresuojama irThe technological production of calcium hydrosilicates is presented : Schematic In the dispensers (1, 2, .3, 4) · the components of the synthesis are weighed accordingly. The synthesis is carried out in the reactor (5). The resulting calcium hydrosilicates pass through the intermediate vessel (6) to the pulverizer (7). There is reinforcement of cellulose fiber, perlite, etc. In the casting molds (8), the suspension takes the appropriate configuration. In plate-making filters (9) it is compressed and
20. /nuvandeninama arba formuojama liejimo būdu formose (10) . Suformuoti gaminiai sukietinami autoklavoje (11) ir išdžiovinami -džiovykloje (12) .20. / dehydrated or molded in molds (10). The molded articles are cured in an autoclave (11) and dried in a drier (12).
Gatava produkcija yra: termoizoįiacinės plokštės (13), įvairių geometrinių formų termoizoliaciniai segmentai (14), aktyvūs užpildai ir adsorbentai (15).Finished products include: thermal insulating panels (13), thermo-insulating segments (14) of various geometric shapes, active fillers and adsorbents (15).
Pavyzdys Nr.1Example No. 1
Ferosilicilio gamybos atliekų dulkės SiO2 = 92,0 % ir kalcio oksidas CaO = 86,0 % sumaišomi moliniu santykiu C/S 1,0 ir pridedamas vandens kiekis, skaičiuojant vąndens-kietų medžiagų santykį V/K = 6,0. Pridedamas natrio silikato vandeninis tirpalas Na2SiO3 n H2O-17, skaičiuojant nuo sausų medžiagų masės. Suspensiją pastoviai maišant reaktoriuje 24 vai 25°C temperatūroje ' - 3 gaunami kalcio hidrosilikatai nuvandeninami ir išdžiovinami.Dust SiO 2 = 92.0% and CaO = 86.0% Ferro-Silicilium Waste Dusts are mixed in a molar ratio C / S of 1.0 and water is added to calculate the water-solids ratio V / K = 6.0. An aqueous solution of sodium silicate, Na 2 SiO 3 n H 2 O-17, based on the dry weight, is added. The suspension in the reactor under constant agitation for 24 h at 25 ° C '- 3 calcium silicate obtained dehydrated and dried.
Pavyzdys Nr .2 5Example # 2 5
AlF3 gamybos atliekos Si02 - 90, 8 ir kalcio oksidas CaO = 86,0 % sumaišomi moliniu santykiu C/S = 0,83 ir pridedamas vandens kiekis skaičiuojant vandens-kietų medžiagų santykį V/K = 20,0. Pridedamas natrio silikatų vandeninis tirpalas Na2SiO3 nH20 - 0,3 % skaičiuojant nuo sausų medžiagų: masės. Suspensiją pastoviai intensyviai 'maišant reaktoriuje 0,5 vai 100°C temperatūroje gaunami kalcio' hidrosilikatai C-S-H (1), kurie nuvandeninami ir išdžiovinami.The SiO 2 - 90, 8 and calcium oxide CaO = 86.0% AlF 3 production wastes are mixed in a molar ratio C / S = 0.83 and the amount of water added is calculated as water / solids ratio V / K = 20.0. Addition of aqueous sodium silicate solution Na 2 SiO 3 nH 2 0 - 0,3% on a dry weight basis. Stirring of the suspension with vigorous stirring in the reactor at 0.5 or 100 ° C yields calcium hydrosilicates of CSH (1) which are dehydrated and dried.
PavyzdysAn example
Maltos kineskopų šlifavimo; atliekos SiO2 = 81,0 . % ir kalcio oksidas CaO = 86,0 >%_išumaišomi moliniu/santykių/Grinding of Maltese tubes; waste SiO 2 = 81.0. % and calcium oxide CaO = 86.0>% _ mixed with mol / ratio /
C/S - 0,83 ir . pridedamas vandens (kiekis, skaičiuojant vandens-kietų /medžiagų santykį V/K - 16,0 . Pridedamas natrio silikato vandeninis tirpalas Na2Si03nH20 - 3,0 % skaičiuoj ant nuo / sausų medžiagų masės. Suspensi j ą pastoviai intensyviai maišant reaktoriuje 3 vai 70°C temperatūroje gaunami kalcio hidrosilikatai C-S-H (1), kurie nuvandeninami ir išdžiovinami. < s //(:..'/_/:;.C / S = 0.83 and. water added (amount based on water / solids / substance ratio V / K - 16.0. Sodium silicate aqueous solution Na 2 Si0 3 nH 2 0 - 3.0% w / w solids added. Suspended vigorously stirring in the reactor for 3 hours at 70 ° C gives the calcium hydrosilicates CSH (1) which are dehydrated and dried. < s // (: .. '/ _ /:;.
Pavyzdys Nr/4Example No / 4
Ferpsįliclo; gamybos atliekų dulkės SiO2 = 92 % ir kalcio -oksidas CaO-88 % sumaišomi moliniu santykiu C/S -1,8 ir pridedamas vandens kiekis, . skaičiuojant vandėns-kietų medžiagų santykį /V/K = 18/ Pridedamas natrio silikato vandeninis tirpalas Na2SiO3nH2O - 5,0 % skaičiuojant nuo sausų medžiagų masės. Suspensiją pastoviai maišant reaktoriuje 20 vai, 80 C / temperatūroje gaunami kalcio hidrosilikatai: (d)C2S hidratas ir C-S-H (1), kurie nuvandeninami ir išdžiovinami.Ferpsley; - production waste dust SiO 2 = 92% and calcium oxide CaO-88% mixed in molar ratio C / S -1.8 and added water, -. water-solids ratio / V / K = 18 / Add aqueous sodium silicate solution Na 2 SiO 3 nH 2 O - 5.0% on a dry weight basis. Stirring the suspension continuously in the reactor for 20 hours at 80 ° C yields calcium hydrosilicates: (d) C 2 S hydrate and CSH (1) which are dehydrated and dried.
5 ?B.<. . B B , 5 ? B. <. . BB,
Silicio gelis SįO2nH2O -98 % ir kalcio oksidas CaO -90 Ϊ, sumaišomi moliniu santykiu C/S - 0,2 ir pridedamas vandens kiekis skaičiuojant t Vandens-kietų ' medžiagų /< santykį V/K - 15. Pridedamas natrio silikato vandeninis : 10 . tirpalas Na2SiO3nH2Q - 20 :%, B skaičiuojant nuo sausų medžiagų masėst B; /Suspensi j ą pastoviai maišant reaktoriųje 18 vai 75°C tėroperatūrojė. gaunami kalcio hidrdsilikatai ; C-S-H · (1), kurie nuvandeninami ir išdžiovinami. .7.·- , 'Silica gel SiO 2 nH 2 O -98% and calcium oxide CaO-90 Ϊ, mixed in molar ratio C / S - 0.2 and added water in t Water-solids / V / K ratio 15. Sodium added aqueous silicate: 10. solution Na 2 SiO 3 nH 2 Q - 20:%, B based on dry mass B; / Suspend it in the reactor for 18 hours or 75 ° C with constant agitation. calcium hydrosilicates are obtained ; CSH · (1) which are dehydrated and dried. .7 · ·, '
'..'į t?B·'/''? λ .. ;/B'B. B'B'''..' to t? b · '/' '? λ ..; / B'B. B'B ''
Pavyzdys Nr.6 'Example # 6 '
Maltos kineskopų šlifavimo atLiekos S į0? - 84 % ir kalcio oksidas CaO< - 88 % sumaišomi moliniu santykiuMILLENNIUM TUBES GRINDING WASTE S TO0 ? - 84% and CaO <- 88% are mixed in molar ratio
C/S - 1,0 ir prįdedamas vandens kiekis, skaičiuojant vandens-kietų medžiagų santykį V/K - 13,0. Prįdedamas natrio silikato vandeninis tirpalas Na2SiO2n H2O - 1,5 %, skaičiuojant:; nuo/ sausų /medžiagų t masė s . SuspensijąC / S = 1,0 and the water content added to the water / solids ratio V / K is 13,0. Aqueous solution of sodium silicate, Na 2 SiO 2 n H 2 O - 1,5%, calculated as:; from / dry / materials t mass s. Suspension
. C/S = 1,2 ir pridedamas vandens kiekis, skaičiuojant vandens-kietų medžiagų santykį V/K = 20. Pridedamas natrio silikato vandeninis tirpalas Na2SiO3nH2O - 2,0 % skaičiuojant nuo sausų medžiagų masės. Suspensiją pastoviai intensyviai maišant reaktoriuje 24 vai 90°C ; 5 temperatūroje gaunami kalcio hidrosilikatai C-S-H (1), kurie nuvandeninami ir išdžiovinami '/. C / S = 1.2 and the volume of water added, calculated as water / solids ratio V / K = 20. Add aqueous sodium silicate solution Na 2 SiO 3 nH 2 O - 2.0% on a dry weight basis. Stirring of the slurry in a reactor for 24 hours at 90 ° C; Calcium hydrosilicates CSH (1) obtained at 5, dehydrated and dried '/
Šiais būdais gauti kalcio hidrosilikatai naudojami gaminanttermoizoliacines ir izoliacines-akustinęs plokštes armuo j ant 0,2 - 60 % skaičiuojant nuo sausų medžiagų kiekio celiuliozės plaušu/perlitu, anglies plaušu arba mineraline vata ir presuojant 1 - 330 kGcm2 slėgiu plokštes arba liejant formose . ir toliau < kie t inan t 150 -2 6 0°C temperatūroj e aut oktavose,, laike 212val.Gautidirbiniaiišdžiovinami.Jųtūrio masė q = 120-350 kg/m3, stiprumas 'lenkiant R = 5,0 kgf/cm2, šilumos laidumo koeficientas λ= 0,05-0,09W/mK.Calcium hydrosilicates obtained by these processes are used in the manufacture of thermal insulating and insulating-acoustic panels at 0.2 to 60% by weight based on the dry matter content of cellulose fiber / perlite, carbon fiber or mineral wool and extruding the panels at pressures of 1 to 330 kGcm 2 . and further at a temperature of 150 -2 6 0 ° C in an octave at 212 hours. The resulting articles are dried. The bulk density q = 120-350 kg / m 3 , strength 'bending R = 5,0 kgf / cm 2 , thermal conductivity λ = 0.05-0.09W / m K.
Kalcio hidrosiiikatų' sintezei gali būti naudojamir kaip reakcijos komponentai: ferosilicio gamybos atliekos, /For the synthesis of calcium hydrosilicates may be used as reaction components: waste from the production of ferro-silicon /
aliuminio fluorido gamybos atliekos, kineskopų šlifavimo atliekos, modifikuota opoka, maltas smėlis. Reakcijos intensifikatoriais gali būti natrio ' silikatas, natrio sulfatas, aliuminio oksidas, fosforo rūgštistir.bario. sulfatas.wastes from the production of aluminum fluoride, wastes from grinding of tube tubes, modified opoca, ground sand. Reaction intensifiers may include sodium silicate, sodium sulfate, alumina, phosphoric acid, and barium. sulfate.
Claims (1)
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| LTIP167A LT3039B (en) | 1992-11-09 | 1992-11-09 | Process for preparing calcium hydrosilicates and articles of them |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| LTIP167A LT3039B (en) | 1992-11-09 | 1992-11-09 | Process for preparing calcium hydrosilicates and articles of them |
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| Publication Number | Publication Date |
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| LTIP167A LTIP167A (en) | 1994-05-15 |
| LT3039B true LT3039B (en) | 1994-09-25 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| LT3803B (en) | 1994-09-19 | 1996-03-25 | Univ Kauno Tech | Process for the preparation of calcium hydrosilicates |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2402670A1 (en) | 1972-05-11 | 1975-04-17 | Onoda Chem Ind Co Ltd | PROCESS FOR THE PRODUCTION OF HYDROGEN CALCIUM SILICATES |
| JPS5410357A (en) | 1977-06-23 | 1979-01-25 | Sumitomo Electric Ind Ltd | Heat-resistant epoxy resin composition |
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1992
- 1992-11-09 LT LTIP167A patent/LT3039B/en not_active IP Right Cessation
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2402670A1 (en) | 1972-05-11 | 1975-04-17 | Onoda Chem Ind Co Ltd | PROCESS FOR THE PRODUCTION OF HYDROGEN CALCIUM SILICATES |
| JPS5410357A (en) | 1977-06-23 | 1979-01-25 | Sumitomo Electric Ind Ltd | Heat-resistant epoxy resin composition |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| LT3803B (en) | 1994-09-19 | 1996-03-25 | Univ Kauno Tech | Process for the preparation of calcium hydrosilicates |
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| Publication number | Publication date |
|---|---|
| LTIP167A (en) | 1994-05-15 |
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