US3666402A - Compositions and method for flame-proofing cellulosic materials while simultaneously imparting wrinkle resistance,and articles thereby produced - Google Patents
Compositions and method for flame-proofing cellulosic materials while simultaneously imparting wrinkle resistance,and articles thereby produced Download PDFInfo
- Publication number
- US3666402A US3666402A US3666402DA US3666402A US 3666402 A US3666402 A US 3666402A US 3666402D A US3666402D A US 3666402DA US 3666402 A US3666402 A US 3666402A
- Authority
- US
- United States
- Prior art keywords
- flame
- textile
- fabric
- triamide
- treated
- 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
Classifications
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M13/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment
- D06M13/244—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with compounds containing sulfur or phosphorus
- D06M13/282—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with compounds containing sulfur or phosphorus with compounds containing phosphorus
- D06M13/292—Mono-, di- or triesters of phosphoric or phosphorous acids; Salts thereof
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S260/00—Chemistry of carbon compounds
- Y10S260/24—Flameproof
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S8/00—Bleaching and dyeing; fluid treatment and chemical modification of textiles and fibers
- Y10S8/12—Wave energy treatment of textiles
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S8/00—Bleaching and dyeing; fluid treatment and chemical modification of textiles and fibers
- Y10S8/18—Grafting textile fibers
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
- Y10T442/20—Coated or impregnated woven, knit, or nonwoven fabric which is not [a] associated with another preformed layer or fiber layer or, [b] with respect to woven and knit, characterized, respectively, by a particular or differential weave or knit, wherein the coating or impregnation is neither a foamed material nor a free metal or alloy layer
- Y10T442/2369—Coating or impregnation improves elasticity, bendability, resiliency, flexibility, or shape retention of the fabric
- Y10T442/2393—Coating or impregnation provides crease-resistance or wash and wear characteristics
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
- Y10T442/20—Coated or impregnated woven, knit, or nonwoven fabric which is not [a] associated with another preformed layer or fiber layer or, [b] with respect to woven and knit, characterized, respectively, by a particular or differential weave or knit, wherein the coating or impregnation is neither a foamed material nor a free metal or alloy layer
- Y10T442/2631—Coating or impregnation provides heat or fire protection
- Y10T442/2672—Phosphorus containing
- Y10T442/268—Phosphorus and nitrogen containing compound
Definitions
- This invention relates to wash-durable single step aqueous bath treatment for cellulosic textiles which renders them fire and wrinkle resistant.
- the textile materials are impregnated usually with aqueous solutions containing the organic phosphorous compounds, dried and then subjected to conditions which insolubilize the flame retardant in situ. While such an impregnation materially improves the properties of the heavier fabrics, it is often difiicult to obtain the desired degree of flame resistance in the lighter weight fabrics without adversely altering other properties of the fabric. For example, it is often difficult to impart fire resistance to fabrics of less than about 7 ounces per yard nted May 30, 1972 without causing an undesirable increase in the stiffness of the fabric. It is also difficult to impart to any fabric an appreciable increase in both wrinkle resistance and flame resistance. In order to obtain both flame resistance and wrinkle resistance, the textile material was usually treated successively with a flame retardant and then with a compound capable of imparting wrinkle resistant properties. A single treatment process to impart both flame retardancy and wrinkle resistance has been long sought after in the art.
- An object of the present invention is to provide an improved method for treating textile fabrics so as to improve their flame resistance to a greater degree than prior art flame retardancy methods at equal add on levels.
- a second object is to simultaneously impart wrinkle resistant and flame resistant properties to cellulosic textiles without materially increasing the fabric stiffness.
- Another object is to provide textile treating composition comprising a compound containing both phosphorus and nitrogen by which both the wrinkle resistance and the flame resistance of a textile can be enhanced by a single treatment.
- An additional object is to provide treated cellulosic textile mate rials which are both flame and wrinkle resistant at low add on levels.
- the present invention comprises treating a textile material with a solution containing N,N',N"-triallylphosphoric triamide, drying to remove excess solvent, and then either curing at elevated temperatures in the presence of a catalyst or irradiating in with a radioactive source material to produce a wrinkle resistant and flame resistant textile fabric.
- Textile materials which may be modified include those derived from cellulosic materials such as cotton, linen, rayon, jute, ramie, paper and the like. Blends of these with synthetic fabrics are also very suitable.
- the N,N',N"-triallylphosphoric triamide is prepared by reacting phosphorus oxychloride with allylarnine in a non-aqueous solvent in the presence of a tertiary amine to react with the liberated hy rochl ric a id-v Thev prefer-red.
- e atio of th the allylamine and the tertiary ami e t pho p r Y- chloride is 3 to 1. Higher ratios can be used although no a van age ha be n f und to g n
- Any inert non-aqueous solvent can be used. Suitable solvents include the ether type such as diethyl ether or dioxane and the hydrocarbon type such as hexane, here zene, toluene, etc.
- The, tertiary amine functions as an HCI acceptor and can be any trialkyl, alkyl-aryl, or heterocyclic type.
- trialkyl amines are triethyl amine, tripropyl amine, and tributyl amine.
- alkyl-aryl type are diethyl-phenyl amine,
- heterocyclic type are pyridine and pyrrole.
- the reaction between the phosphorous oxychloride and allyl-amine is exothermic and generally it has been found. to be desirable to control the reaction temperature below C. and preferably between 5 -25 C.
- the temperature new 3 control of the reaction may be conveniently carried out by utilizing a relatively slow addition rate for the reactants or by cooling the reaction mixture.
- the HCl which is liberated during reaction reacts with the tertiary amine to form the HCl salt which precipitates during reaction and is easily removed from the reaction by filtration.
- the desired N,N',N"-triallylphosphoric triamide is recovered by removal of the solvent and excess reactants by any siutable means such as vacuum distillation.
- the N,N,N"-triallylphosphoric tri amide can be formulated into the desired treating composition.
- Any suitable formulation can be used, for example, an emulsion or solution, with aqueous solution being generally preferred.
- the treating solution can be applied to the fabric by dipping, spraying, rolling, padding or the like techniques, as are known to those skilled in the art.
- the excess of the formulation can be removed by squeezing, centrifuging, pressing, or other similar operations.
- the material can, if desired, be dried and is then cured by holding the treated textile material for several minutes at high temperatures or for several hours at lower temperatures, or in the presence of a radioactive source of several minutes.
- the NQNQN"-triallylphosphoric triamide is included in the formulation in amounts within the range of 1 to 50 percent by weight of the composition and preferably in amounts within the range of to percent by weight of the total composition. Additionally, it has been found to be desirable to also include in the treating composition a catalyst capable of initiating a free radical polymerization by itself or in the presence of an activator such as a reducing agent. Such redox systems are described in Fundamental Principles of Polymerization, DAlelio, Gaetano F., John Wiley & Son, New York, 1950. Such catalyst is desirably contained in the composition in amounts within the range of about 0.] to about 20 percent by weight of the formulation and preferably in amounts within the range of about 0.5 to 10 percent by weight of the treating composition.
- Suitable compounds which can be used as the catalyst include hydrogen peroxide; persulfates such as ammonium, sodium or potassium; hydroperoxides such as t-butyl hydroperoxide, cumene hydroperoxide; diacylperoxides such as benzoyl peroxide, acetyl peroxides; di-alkyl per oxides such as di-t--butyl peroxide and dicumyl peroxides; peresters such as t-butyl peroxyacetate, t-butyl peroxybenzoate; and peracids such as performic or peracetic.
- persulfates such as ammonium, sodium or potassium
- hydroperoxides such as t-butyl hydroperoxide, cumene hydroperoxide
- diacylperoxides such as benzoyl peroxide, acetyl peroxides
- di-alkyl per oxides such as di-t--butyl peroxide and dicum
- the remainder of the textile treating composition is comprised of solvent and wetting agent, the latter being optional.
- suitable solvents include water, hexane, benzene, ethyl alcohol, methyl alcohol, and any others which do not react with the N,N,N"triallylphosphoric triamide.
- Wetting agents such as Triton X100 which is an ethylene oxide-alkyl phenol adduct can be incorporated in the treating composition in amounts ranging up to 5 weight percent, preferably 0.5 to 1 weight percent.
- the textile treating formulations are applied so as to provide in the textile material an add-on desirably within the range of about 1 to 20 percent by weight of the textile material and preferably within the range of about 5 to 15 percent by weight after the treated fabric has been cured.
- add-on refers to the flame retardant which has reacted with the textile material; that is, the modifying agent which remains as an integral chemical part of the material after curing and. washing to remove any unreacted excess.
- the amount of add-on. is given in percent by weight based. on the original dry Weight of the textile material.
- the curing of the treated textile material is carried out in one embodiment by holding the material at temperatures between about room temperature, i.e., about 25 C., and about 250 C. for a period of time sufficient to permit the reaction between the textile material and the N,N',N"-triallylphosphoric triamide to take place. This period of time can range from several hours at room temperature to several minutes at elevated temperatures. Desirably the curing is carried out at temperatures within the range of about to 250 C. and preferably at temperatures within the range of about to 180 C. At these temperatures, curing times of from 15 to 30 minutes are typical.
- An alternative embodiment is irradiating the cellulosic textile material which has been.
- N,N,N"-triallyelphosphoric triamide and the cellulosic material react through the olefinic double bonds and the C--H linkages respectively, resulting in cross-linkage of the cellulosic material and the imparting of wrinkle resistance thereby.
- EXAMPLE 1 171 grams (3.0 moles) of allyl amine, 309 grams (3.05 moles) of triethylamine, and 1600 mls. of ether were placed in a Pyrex glass reaction vessel. The vessel was flushed with nitrogen and the contents cooled to about 5 C. Thereafter 153.4 grams (1.0 mole) of phosphorous oxychloride were added dropwise over a two hour period. The temperature of the ractiou mixture was not allowed to go above 25 C. After the addition. of the phosphorus oxychloride the reaction mixture was stirred at ambient temperature for 2 hours and then filtered to remove the precipitated triethylamine-HCl salt.
- the liltrate was stirred for about 16 hours at ambient tempera ture with 20'grams of decolorizing charcoal and then filtered to remove the latter. The filtrate was then vacuum distilled to remove the ether solvent and excess reactants as overhead and the desired product, N,l l',i l"-trialiylphosphoric triamide (192 grams), was recovered as dis tillation bottoms. The isolated product was found to greater than 95 percent pure by elemental and Nlvllt analyses.
- a textile treating bath was made by combining '20 parts of N,N,N"-triallylphosphoric triamide prepared in Example I and two parts of tertiary butyl hydroperoxide as a free radical catalyst with sufficient Water to a total of 100 parts of treating solution. Swatches of bleached, desized, mercerized cotton print cloth weighing 4 ounces per yard were then padded through this solution and a wet pick-up on the fabric of 100 percent was obtained. After drying, the treated fabrics were then cured for 15 minutes at C. and then washed under hot water to remove unreacted compound.
- the add-ons obtained by the nonheat treated solution ranged from 6 to 7.5 percent by weight of the untreated fabric.
- Example III The procedure of Example II was repeated with the exception that longer curing times were used. In one case the treated fabric was cured for 1 hour at 165 C. and this resulted in an add-on of 14.2 Weight percent (Table 1). The treated fabric passed the vertical flame test and had a wrinkle recovery angle of 271. Curing at longer times (18 hours) at lower temperatures (125) resulted in an add-on of 12.3 Weight percent. The treated fabric passed the vertical flame test and had a wrinkle recovery value of 276.
- a textile treating bath was made by combining 20 parts of N,N,N-triallylphosphoric triamide prepared in Example I with sufficient water to make a total of 100 parts of treating solution. Swatches of untreated cotton fabric used in Example II were padded through this solution and a wet pick-up on the fabric of 100% was obtained. After drying the fabrics were then cured at room temperature by being exposed to a cobalt 60 radiation source with an effective exposure dose rate of 250,000 roentgens per hour. After irradiation the fabrics were washed under hot water to remove unreacted N,N,N" triallylphosphoric tri'amide.
- ties normally require high add-ons (15 percent or higher) which usually increase the stiffness of the fabric with no improvement in the wrinkle resistant properties of the fabric.
- Tesoro et al., supra, at page 182 required a 17.1% add-on of NMPA to achieve a degree of fire retardancy (6.8 inch char length) which does not even pass the AATCC vertical flame test which only allows 5.5 inches of char length for 4 ounces per yard fabric.
- Our flame retardant passed this test with only 6.5 weight percent add on (Table 1) and so appears to be markedly superior than NMPA in flame retardancy.
- a two step process consisting of treatment of the fabric with a flame retardant and then with a compound capable of imparting wrinkle resistance is usually required when a fabric containing both properties is desired.
- a textile fabric is treated with one compound in a single step to produce a treated fabric having improved wrinkle resistant and fire resistant prop erties with no increase in stiffness of the fabric.
- the addon required to impart these properties is also exceptionally low.
- a process for simultaneously imparting wrinkle resistance and flame retardance to cellulosic textile materials comprising applying the composition comprising from 1 to 50 weight percent N,N',N-triallylphosphoric triamide, 0.1 to 20 weight percent free radical catalyst, 0 to 5 weight percent wetting agent, and the remainder solvent to said materials, heating the material at from about 25 C. to about 250 C for a time sufficient to permit cross-linking.
- the process of claim 1 further including the step of drying the material at 25-100 C. for from about 5 to about 30 minutes so as to remove excess solvent prior to he ti g h mat ri l.
- a process for rendering cellulosic textile material's resistant to fire and wrinkles comprising (a) contacting the material with a solution of an emul sion of N,N',N"-triallylphosphoric triamide,
- a process for rendering cellulosic textile materials resistant to fire and wrinkles comprising (a) contacting the material with a solution or an emulsion of N,N,N-triallylphosphoric triamide,
- triallylphosphoric triamide with a radioactive source material for a time sufficient to chemically react the material with the N,N',N"-triallylphosphoric triamide
- a wrinkle resistant, flame resistant article compris- References Cited Chemical Abstracts, 1963, vol, 58, p. 1485(h).
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
Abstract
Description
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US8581570A | 1970-10-30 | 1970-10-30 | |
US21445771A | 1971-12-30 | 1971-12-30 |
Publications (1)
Publication Number | Publication Date |
---|---|
US3666402A true US3666402A (en) | 1972-05-30 |
Family
ID=26773120
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US3666402D Expired - Lifetime US3666402A (en) | 1970-10-30 | 1970-10-30 | Compositions and method for flame-proofing cellulosic materials while simultaneously imparting wrinkle resistance,and articles thereby produced |
US3715185D Expired - Lifetime US3715185A (en) | 1970-10-30 | 1971-12-30 | Compositions for flame-proofing cellulosic materials |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US3715185D Expired - Lifetime US3715185A (en) | 1970-10-30 | 1971-12-30 | Compositions for flame-proofing cellulosic materials |
Country Status (1)
Country | Link |
---|---|
US (2) | US3666402A (en) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3906136A (en) * | 1971-04-30 | 1975-09-16 | Stauffer Chemical Co | Process of flame retarding substrates by applying hexahydratriazine phosphonate derivatives |
US3932123A (en) * | 1973-03-16 | 1976-01-13 | The United States Of America As Represented By The Secretary Of Agriculture | Flameproofing of cotton cellulose with hexamethyl phosphorous triamide |
US3936267A (en) * | 1975-02-27 | 1976-02-03 | The United States Of America As Represented By The Secretary Of Agriculture | Flameproofing wool textiles |
US3982053A (en) * | 1973-06-22 | 1976-09-21 | Ciba-Geigy Ag | Process for flameproofing organic fiber material by the transfer process |
US3991257A (en) * | 1973-06-22 | 1976-11-09 | Ciba-Geigy Ag | Process for flameproofing organic fibre material by the transfer process |
US3992560A (en) * | 1973-06-22 | 1976-11-16 | Ciba-Geigy Ag | Process for flameproofing organic fibre material by the transfer process |
US3993852A (en) * | 1973-06-22 | 1976-11-23 | Ciba-Geigy Ag | Process for flameproofing organic fiber materials by the transfer process |
-
1970
- 1970-10-30 US US3666402D patent/US3666402A/en not_active Expired - Lifetime
-
1971
- 1971-12-30 US US3715185D patent/US3715185A/en not_active Expired - Lifetime
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3906136A (en) * | 1971-04-30 | 1975-09-16 | Stauffer Chemical Co | Process of flame retarding substrates by applying hexahydratriazine phosphonate derivatives |
US3932123A (en) * | 1973-03-16 | 1976-01-13 | The United States Of America As Represented By The Secretary Of Agriculture | Flameproofing of cotton cellulose with hexamethyl phosphorous triamide |
US3982053A (en) * | 1973-06-22 | 1976-09-21 | Ciba-Geigy Ag | Process for flameproofing organic fiber material by the transfer process |
US3991257A (en) * | 1973-06-22 | 1976-11-09 | Ciba-Geigy Ag | Process for flameproofing organic fibre material by the transfer process |
US3992560A (en) * | 1973-06-22 | 1976-11-16 | Ciba-Geigy Ag | Process for flameproofing organic fibre material by the transfer process |
US3993852A (en) * | 1973-06-22 | 1976-11-23 | Ciba-Geigy Ag | Process for flameproofing organic fiber materials by the transfer process |
US3936267A (en) * | 1975-02-27 | 1976-02-03 | The United States Of America As Represented By The Secretary Of Agriculture | Flameproofing wool textiles |
Also Published As
Publication number | Publication date |
---|---|
US3715185A (en) | 1973-02-06 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US3864156A (en) | Process for Flameproofing Synthetic Textiles and the Fire Retardant Textile Formed Therefrom | |
US2574515A (en) | Organic compounds containing phosphorus and bromine | |
US3746572A (en) | Process for flame retarding fabrics | |
US2637623A (en) | Textile treating compounds and method of applying them to textiles | |
US2891877A (en) | Flame resistant organic textiles and method of production | |
US3698854A (en) | Process for producing flame resistant organic textiles | |
US3867186A (en) | Method of treating cellulosic material with N-methylol phosphazene compounds and product obtained | |
US3671304A (en) | Process for flameproofing and resultant product | |
US3666402A (en) | Compositions and method for flame-proofing cellulosic materials while simultaneously imparting wrinkle resistance,and articles thereby produced | |
US3839207A (en) | Allyl 2-carbamoyalkylphosphonates flame retardants | |
US3054698A (en) | Flame proofing of cellulosic materials | |
US3762865A (en) | Flame retarding of solid substrates with allyl 2-carbamoylalkylphosphonates | |
US2814573A (en) | Organic polymeric compositions containing nitrilo methylol-phosphorus polymers and bromine compounds | |
US3695925A (en) | Process for flameproofing textiles | |
US2901444A (en) | Polymers made from 1-aziridinyl phosphine oxides and sulfides and flame resistant organic textiles | |
US3799738A (en) | Flame retardant process for cellulosics | |
US3666401A (en) | Treatment of textiles to impart wrinkle-resistant and fire-resistant properties | |
US3639539A (en) | Phosphorus-containing n n-dimethylolcarboxylic acid amides | |
US3428480A (en) | Flame-retardant cellulosic material,composition and method for making same | |
US3276897A (en) | Flame resistant cellulosic materials | |
US3219478A (en) | Flameproofing of cellulosic material | |
US3409463A (en) | Treatment of cellulosic materials with a polyaziridinylphosphoramide and a sulfamide | |
US3034919A (en) | Fire retardant composition and cellulosic fabric treated therewith | |
US2911325A (en) | Flame resistant organic textiles and method of production | |
US3669725A (en) | Flameproofing of polyester-cellulose fibre materials |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: ATLANTIC RICHFIELD COMPANY Free format text: MERGER AND CHANGE OF NAME;ASSIGNORS:ATLANTIC RICHFIELD COMPANY (MERGED INTO);ATLANTIC RICHFIELD DELAWARE CORPORATION (CHANGED TO);REEL/FRAME:004911/0380 Effective date: 19850314 Owner name: ARCO CHEMICAL COMPANY,PENNSYLVANIA Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:ATLANTIC RICHFIELD COMPANY;REEL/FRAME:004911/0448 Effective date: 19870831 Owner name: ARCO CHEMICAL COMPANY, 1500 MARKET STREET, PHILADE Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:ATLANTIC RICHFIELD COMPANY;REEL/FRAME:004911/0448 Effective date: 19870831 |
|
AS | Assignment |
Owner name: ARCO CHEMICAL TECHNOLOGY, INC., A CORP. OF DE, DEL Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:ARCO CHEMICAL COMPANY;REEL/FRAME:005010/0113 Effective date: 19880831 |