US3873413A - Method of improving smelt properties and reducing dissolving tank explosions during pulping of wood with sodium based liquors - Google Patents
Method of improving smelt properties and reducing dissolving tank explosions during pulping of wood with sodium based liquors Download PDFInfo
- Publication number
- US3873413A US3873413A US406498A US40649873A US3873413A US 3873413 A US3873413 A US 3873413A US 406498 A US406498 A US 406498A US 40649873 A US40649873 A US 40649873A US 3873413 A US3873413 A US 3873413A
- Authority
- US
- United States
- Prior art keywords
- smelt
- alkali metal
- sodium
- added
- potassium
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 241001062472 Stokellia anisodon Species 0.000 title claims abstract description 60
- 238000004537 pulping Methods 0.000 title claims abstract description 17
- 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 title claims abstract description 11
- 239000011734 sodium Substances 0.000 title claims abstract description 11
- 229910052708 sodium Inorganic materials 0.000 title claims abstract description 11
- 238000000034 method Methods 0.000 title claims description 33
- 238000004880 explosion Methods 0.000 title abstract description 22
- 239000002023 wood Substances 0.000 title abstract description 11
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims abstract description 50
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 claims abstract description 42
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims abstract description 28
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Chemical compound [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 claims abstract description 20
- -1 alkali metal borates Chemical class 0.000 claims abstract description 15
- 230000008018 melting Effects 0.000 claims abstract description 15
- 238000002844 melting Methods 0.000 claims abstract description 15
- 229910052783 alkali metal Inorganic materials 0.000 claims abstract description 13
- 229910000029 sodium carbonate Inorganic materials 0.000 claims abstract description 13
- 239000000203 mixture Substances 0.000 claims abstract description 11
- 229910000027 potassium carbonate Inorganic materials 0.000 claims abstract description 10
- XGZVUEUWXADBQD-UHFFFAOYSA-L lithium carbonate Chemical compound [Li+].[Li+].[O-]C([O-])=O XGZVUEUWXADBQD-UHFFFAOYSA-L 0.000 claims abstract description 6
- 229910052808 lithium carbonate Inorganic materials 0.000 claims abstract description 6
- 239000000126 substance Substances 0.000 claims description 17
- 235000011121 sodium hydroxide Nutrition 0.000 claims description 16
- 235000011118 potassium hydroxide Nutrition 0.000 claims description 15
- 238000010411 cooking Methods 0.000 claims description 12
- 150000001339 alkali metal compounds Chemical class 0.000 claims description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 11
- 229910021538 borax Inorganic materials 0.000 claims description 10
- KKCBUQHMOMHUOY-UHFFFAOYSA-N sodium oxide Chemical compound [O-2].[Na+].[Na+] KKCBUQHMOMHUOY-UHFFFAOYSA-N 0.000 claims description 10
- 235000010339 sodium tetraborate Nutrition 0.000 claims description 10
- 235000011181 potassium carbonates Nutrition 0.000 claims description 9
- 238000011084 recovery Methods 0.000 claims description 9
- 229910001948 sodium oxide Inorganic materials 0.000 claims description 8
- 239000004328 sodium tetraborate Substances 0.000 claims description 8
- 150000004649 carbonic acid derivatives Chemical class 0.000 claims description 6
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims description 4
- 229910052744 lithium Inorganic materials 0.000 claims description 4
- WUUHFRRPHJEEKV-UHFFFAOYSA-N tripotassium borate Chemical group [K+].[K+].[K+].[O-]B([O-])[O-] WUUHFRRPHJEEKV-UHFFFAOYSA-N 0.000 claims description 4
- 229920001131 Pulp (paper) Polymers 0.000 claims description 2
- 239000000706 filtrate Substances 0.000 claims description 2
- 239000012978 lignocellulosic material Substances 0.000 claims description 2
- 235000015320 potassium carbonate Nutrition 0.000 claims 3
- 235000017550 sodium carbonate Nutrition 0.000 claims 3
- 150000001875 compounds Chemical class 0.000 abstract description 13
- WMFOQBRAJBCJND-UHFFFAOYSA-M Lithium hydroxide Chemical compound [Li+].[OH-] WMFOQBRAJBCJND-UHFFFAOYSA-M 0.000 abstract description 9
- 239000000654 additive Substances 0.000 abstract description 6
- 239000012530 fluid Substances 0.000 abstract description 2
- 239000000123 paper Substances 0.000 description 7
- 230000000996 additive effect Effects 0.000 description 3
- 231100001261 hazardous Toxicity 0.000 description 3
- 239000002655 kraft paper Substances 0.000 description 3
- 239000003265 pulping liquor Substances 0.000 description 3
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 2
- 241001417490 Sillaginidae Species 0.000 description 2
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
- 150000008044 alkali metal hydroxides Chemical class 0.000 description 2
- 239000002360 explosive Substances 0.000 description 2
- 239000011121 hardwood Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 239000011591 potassium Substances 0.000 description 2
- 229910052700 potassium Inorganic materials 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 238000007711 solidification Methods 0.000 description 2
- 230000008023 solidification Effects 0.000 description 2
- BSVBQGMMJUBVOD-UHFFFAOYSA-N trisodium borate Chemical compound [Na+].[Na+].[Na+].[O-]B([O-])[O-] BSVBQGMMJUBVOD-UHFFFAOYSA-N 0.000 description 2
- VZSRBBMJRBPUNF-UHFFFAOYSA-N 2-(2,3-dihydro-1H-inden-2-ylamino)-N-[3-oxo-3-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)propyl]pyrimidine-5-carboxamide Chemical compound C1C(CC2=CC=CC=C12)NC1=NC=C(C=N1)C(=O)NCCC(N1CC2=C(CC1)NN=N2)=O VZSRBBMJRBPUNF-UHFFFAOYSA-N 0.000 description 1
- 206010067482 No adverse event Diseases 0.000 description 1
- 241000183024 Populus tremula Species 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- LSNNMFCWUKXFEE-UHFFFAOYSA-N Sulfurous acid Chemical compound OS(O)=O LSNNMFCWUKXFEE-UHFFFAOYSA-N 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- HSFWRNGVRCDJHI-UHFFFAOYSA-N alpha-acetylene Natural products C#C HSFWRNGVRCDJHI-UHFFFAOYSA-N 0.000 description 1
- 150000001642 boronic acid derivatives Chemical class 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 230000001627 detrimental effect Effects 0.000 description 1
- 230000003292 diminished effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 125000002534 ethynyl group Chemical group [H]C#C* 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 230000009972 noncorrosive effect Effects 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 150000003388 sodium compounds Chemical class 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000010561 standard procedure Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- RIUWBIIVUYSTCN-UHFFFAOYSA-N trilithium borate Chemical compound [Li+].[Li+].[Li+].[O-]B([O-])[O-] RIUWBIIVUYSTCN-UHFFFAOYSA-N 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Classifications
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
- D21C11/00—Regeneration of pulp liquors or effluent waste waters
- D21C11/12—Combustion of pulp liquors
- D21C11/122—Treatment, e.g. dissolution, of the smelt
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J19/0006—Controlling or regulating processes
- B01J19/002—Avoiding undesirable reactions or side-effects, e.g. avoiding explosions, or improving the yield by suppressing side-reactions
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J2219/00049—Controlling or regulating processes
- B01J2219/00245—Avoiding undesirable reactions or side-effects
- B01J2219/00259—Preventing runaway of the chemical reaction
- B01J2219/00263—Preventing explosion of the chemical mixture
Definitions
- ABSTRACT Lithium hydroxide, potassium hydroxide, lithium carbonate, potassium carbonate, and alkali metal borates or mixtures thereof can be added to the smelt produced by pulping wood with a sodium based liquor containing such compounds as sodium carbonate and sodium hydroxide to lower the melting point and make the smelt softer and more fluid so that when it enters the dissolving tank violent explosions are substantially eliminated. These additives do not interfere with pulping and paper strength is not affected b their use.
- the present invention involves the addition of an alkali metal compound preferably alkali metal hydroxides, carbonates and borates or mixtures thereof (other than sodium carbonate) to a sodium based smelt produced from a wood pulping process in an amount sufficient to lower the melting point of the original smelt to improve molten smelt fluidity and prevent smelt spout plugging as well as dissolving tank explosions.
- an alkali metal compound preferably alkali metal hydroxides, carbonates and borates or mixtures thereof (other than sodium carbonate)
- a sodium based smelt produced from a wood pulping process in an amount sufficient to lower the melting point of the original smelt to improve molten smelt fluidity and prevent smelt spout plugging as well as dissolving tank explosions.
- the smelt is softer and can be more readily removed from the spout if solidification does occur.
- this invention is concerned with chemical means for improving the properties of sodium carbonate smelt produced from a nonsulfur wood pulping process such as one utilizing sodium carbonate and sodium hydroxide as the cooking liquor.
- Sodium carbonate smelts in particular require higher temperatures to prevent them from solidifying in the furnace compared to smelts containing sulfur produced by kraft or neutral sulfite semichemical processes.
- the chemicals employed to decrease the melting point of the smelt are used in various concentrations.
- any potassium containing compound can be used and preferably non-toxic compounds.
- the alkali metal hydroxides and carbonates are used in concentrations of from 1 to 80 mole percent based on Na O but the maximum effect of K CO is achieved at about 40 mole percent which lowers the melting point of Na CO smelt about 280F compared to the melting point of 1,593F for 100% Na CO smelt.
- KOH is very similar to NaOH, it is converted to K CO in the recovery process and is effective at the same concentrations.
- Borax on the other hand, can be used in lower concentrations on the order of from 2 to 10 mole percent based on Na O.
- the chemicals employed in the present method of improving smelt properties and reducing dissolving tank explosions can be added at any point in the liquor cycle but preferably where good control is available such as in the white liquor make up tank or in the black liquor tank. It is only necessary that the smelt contain an amount of such chemicals sufficient to lower the melting point of the smelt so that stoppage does not occur due to a build-up of solid smelt prior to entering the dissolving tank.
- the refined pulp was converted into handsheets and the properties of the paper determined at 26 pounds per thousand square feet by standard procedure.
- the conditions employed, pulp yield obtained and the strength properties of the sheets are shown in the table below wherein ring crush is expressed in pounds per 6 inches of sample length, tear in grams per 16 sheets, tensile in pounds per 1 inch width, corrugating medium test (CMT) in pounds per 10 flutes and additive as percent of total chemical expressed as N820,
- EXAMPLE 1 1 In actual mill operations using a cooking liquor comprising only sodium hydroxide and sodium carbonate with no additive to lower the melting point of the smelt resulting therefrom, the smelt solidified in the recovery furnace spout, formed icicle-like projections 4 to 5 feet long which hung from the spout into the dissolving tank, plugged the spout hole and caused the molten smelt to solidify to a dangerous level in the furnace. Frequent plugging of the spout occurred requiring acetylene torches and ajack hammer to melt and chisel the solidified smelt off the spout and to open the spout hole. During the chiseling operation, large chunks of smelt fell into the dissolving tank and upon contact with the water exploded violently which was extremely hazardous to the mill personnel. Over a period of 30 days, about 100 spout pluggings occurred.
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Paper (AREA)
Priority Applications (10)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US406498A US3873413A (en) | 1973-10-15 | 1973-10-15 | Method of improving smelt properties and reducing dissolving tank explosions during pulping of wood with sodium based liquors |
| ZA00746077A ZA746077B (en) | 1973-10-15 | 1974-09-25 | Method of improving smelt properties and reducing dissolving tank explosions during pulping of wood with sodium based liquors |
| CA211,277A CA1058357A (en) | 1973-10-15 | 1974-10-11 | Method of improving smelt properties and reducing dissolving tank explosions during pulping of wood with sodium based liquors |
| GB44140/74A GB1489349A (en) | 1973-10-15 | 1974-10-11 | Method of improving smelt properties and reducing dissolving tank explosions during pulping of wood with sodium based liquors |
| SE7412884A SE412424B (sv) | 1973-10-15 | 1974-10-14 | Sett att forbettra smeltegenskaper och minska explosioner i smeltlosare under uppslutning av ved med natriumbaserade vetskor. |
| FR7434424A FR2247576B1 (enrdf_load_stackoverflow) | 1973-10-15 | 1974-10-14 | |
| ES430977A ES430977A1 (es) | 1973-10-15 | 1974-10-14 | Un procedimiento ciclico mejorado de transformacion en pas-ta de papel y recuperacion de productos quimicos para produ-cir pasta de papel a partir de materiales lignocelulosicos. |
| DE2448891A DE2448891C3 (de) | 1973-10-15 | 1974-10-14 | Verfahren zur Herstellung von Papierpulpe aus Ligno-Zellulose-Materialien mit verbesserter Abiaugenaufbereitung |
| BR8536/74A BR7408536D0 (pt) | 1973-10-15 | 1974-10-14 | Processo para melhorar as propriedades de refinacao e reduzir as explosoes no tanque de dissolucao durante a polpacao de madeira com solucoes a base de sodio |
| JP49118608A JPS524642B2 (enrdf_load_stackoverflow) | 1973-10-15 | 1974-10-15 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US406498A US3873413A (en) | 1973-10-15 | 1973-10-15 | Method of improving smelt properties and reducing dissolving tank explosions during pulping of wood with sodium based liquors |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US3873413A true US3873413A (en) | 1975-03-25 |
Family
ID=23608241
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US406498A Expired - Lifetime US3873413A (en) | 1973-10-15 | 1973-10-15 | Method of improving smelt properties and reducing dissolving tank explosions during pulping of wood with sodium based liquors |
Country Status (10)
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4106978A (en) * | 1977-01-31 | 1978-08-15 | Combustion Engineering, Inc. | Method of preventing explosions using a smelt water explosion inhibitor |
| US20050037226A1 (en) * | 2003-08-12 | 2005-02-17 | Peascoe Meisner Roberta A. | Alkali resistant refractories |
| US20070272130A1 (en) * | 2006-05-24 | 2007-11-29 | Lars Eriksson | Apparatus for cleaning a smelt spout of a combustion device |
| US20080110586A1 (en) * | 2006-11-09 | 2008-05-15 | Jian Li | Process of purifying wood pulp with caustic-borate solution and recovering the purifying chemical |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6348128B1 (en) * | 1998-06-01 | 2002-02-19 | U.S. Borax Inc. | Method of increasing the causticizing efficiency of alkaline pulping liquor by borate addition |
| US6294048B1 (en) * | 1998-06-01 | 2001-09-25 | U.S. Borax Inc. | Method for regenerating sodium hydroxide by partial autocausticizing sodium carbonate containing smelt by reaction with a borate |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3447895A (en) * | 1966-12-01 | 1969-06-03 | Combustion Eng | Method of preventing smelt-water explosions |
| US3615175A (en) * | 1969-03-24 | 1971-10-26 | Combustion Eng | Preventing physical explosion due to the interaction of liquid water and molten chemical compounds |
| US3650889A (en) * | 1970-08-03 | 1972-03-21 | Combustion Eng | Pollution controlled polysulfide recovery process |
-
1973
- 1973-10-15 US US406498A patent/US3873413A/en not_active Expired - Lifetime
-
1974
- 1974-09-25 ZA ZA00746077A patent/ZA746077B/xx unknown
- 1974-10-11 CA CA211,277A patent/CA1058357A/en not_active Expired
- 1974-10-11 GB GB44140/74A patent/GB1489349A/en not_active Expired
- 1974-10-14 BR BR8536/74A patent/BR7408536D0/pt unknown
- 1974-10-14 FR FR7434424A patent/FR2247576B1/fr not_active Expired
- 1974-10-14 DE DE2448891A patent/DE2448891C3/de not_active Expired
- 1974-10-14 ES ES430977A patent/ES430977A1/es not_active Expired
- 1974-10-14 SE SE7412884A patent/SE412424B/xx not_active IP Right Cessation
- 1974-10-15 JP JP49118608A patent/JPS524642B2/ja not_active Expired
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3447895A (en) * | 1966-12-01 | 1969-06-03 | Combustion Eng | Method of preventing smelt-water explosions |
| US3615175A (en) * | 1969-03-24 | 1971-10-26 | Combustion Eng | Preventing physical explosion due to the interaction of liquid water and molten chemical compounds |
| US3650889A (en) * | 1970-08-03 | 1972-03-21 | Combustion Eng | Pollution controlled polysulfide recovery process |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4106978A (en) * | 1977-01-31 | 1978-08-15 | Combustion Engineering, Inc. | Method of preventing explosions using a smelt water explosion inhibitor |
| US20050037226A1 (en) * | 2003-08-12 | 2005-02-17 | Peascoe Meisner Roberta A. | Alkali resistant refractories |
| US20070272130A1 (en) * | 2006-05-24 | 2007-11-29 | Lars Eriksson | Apparatus for cleaning a smelt spout of a combustion device |
| US7735435B2 (en) | 2006-05-24 | 2010-06-15 | Diamond Power International, Inc. | Apparatus for cleaning a smelt spout of a combustion device |
| US20080110586A1 (en) * | 2006-11-09 | 2008-05-15 | Jian Li | Process of purifying wood pulp with caustic-borate solution and recovering the purifying chemical |
| US7854847B2 (en) | 2006-11-09 | 2010-12-21 | Rayonier Trs Holdings Inc. | Process of purifying wood pulp with caustic-borate solution and recovering the purifying chemical |
Also Published As
| Publication number | Publication date |
|---|---|
| ES430977A1 (es) | 1976-10-16 |
| GB1489349A (en) | 1977-10-19 |
| CA1058357A (en) | 1979-07-17 |
| DE2448891C3 (de) | 1978-04-27 |
| ZA746077B (en) | 1976-04-28 |
| DE2448891A1 (de) | 1975-04-17 |
| FR2247576A1 (enrdf_load_stackoverflow) | 1975-05-09 |
| JPS524642B2 (enrdf_load_stackoverflow) | 1977-02-05 |
| DE2448891B2 (de) | 1977-09-01 |
| BR7408536D0 (pt) | 1975-08-05 |
| FR2247576B1 (enrdf_load_stackoverflow) | 1977-11-10 |
| SE412424B (sv) | 1980-03-03 |
| JPS5064502A (enrdf_load_stackoverflow) | 1975-05-31 |
| SE7412884L (enrdf_load_stackoverflow) | 1975-04-16 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| AS | Assignment |
Owner name: OI FOREST PRODUCTS STS INC., ONE SEAGATE, TOLEDO, Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:OWENS-ILLINOIS, INC.;REEL/FRAME:004744/0811 Effective date: 19870323 Owner name: OI FOREST PRODUCTS STS INC., OHIO Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:OWENS-ILLINOIS, INC.;REEL/FRAME:004744/0811 Effective date: 19870323 |