Classifications

• • D—TEXTILES; PAPER
  • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
  • D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
  • D06P1/00—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed
  • D06P1/44—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed using insoluble pigments or auxiliary substances, e.g. binders
  • D06P1/62—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed using insoluble pigments or auxiliary substances, e.g. binders using compositions containing low-molecular-weight organic compounds with sulfate, sulfonate, sulfenic or sulfinic groups
  • D06P1/621—Compounds without nitrogen
  • D06P1/622—Sulfonic acids or their salts
  • D06P1/623—Aliphatic, aralophatic or cycloaliphatic
• • D—TEXTILES; PAPER
  • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
  • D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
  • D06P1/00—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed
  • D06P1/44—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed using insoluble pigments or auxiliary substances, e.g. binders
  • D06P1/60—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed using insoluble pigments or auxiliary substances, e.g. binders using compositions containing polyethers
  • D06P1/613—Polyethers without nitrogen
• • D—TEXTILES; PAPER
  • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
  • D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
  • D06P1/00—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed
  • D06P1/44—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed using insoluble pigments or auxiliary substances, e.g. binders
  • D06P1/62—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed using insoluble pigments or auxiliary substances, e.g. binders using compositions containing low-molecular-weight organic compounds with sulfate, sulfonate, sulfenic or sulfinic groups
  • D06P1/621—Compounds without nitrogen
  • D06P1/627—Sulfates
• • D—TEXTILES; PAPER
  • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
  • D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
  • D06P1/00—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed
  • D06P1/44—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed using insoluble pigments or auxiliary substances, e.g. binders
  • D06P1/64—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed using insoluble pigments or auxiliary substances, e.g. binders using compositions containing low-molecular-weight organic compounds without sulfate or sulfonate groups
  • D06P1/642—Compounds containing nitrogen
  • D06P1/649—Compounds containing carbonamide, thiocarbonamide or guanyl groups
  • D06P1/6495—Compounds containing carbonamide -RCON= (R=H or hydrocarbons)
  • D06P1/6496—Condensation products from carboxylic acids and hydroxyalkyl amine (Kritchewski bases)
• • D—TEXTILES; PAPER
  • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
  • D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
  • D06P3/00—Special processes of dyeing or printing textiles, or dyeing leather, furs, or solid macromolecular substances in any form, classified according to the material treated
  • D06P3/02—Material containing basic nitrogen
  • D06P3/04—Material containing basic nitrogen containing amide groups
  • D06P3/14—Wool
  • D06P3/16—Wool using acid dyes
• • D—TEXTILES; PAPER
  • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
  • D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
  • D06P3/00—Special processes of dyeing or printing textiles, or dyeing leather, furs, or solid macromolecular substances in any form, classified according to the material treated
  • D06P3/02—Material containing basic nitrogen
  • D06P3/04—Material containing basic nitrogen containing amide groups
  • D06P3/24—Polyamides; Polyurethanes
• • D—TEXTILES; PAPER
  • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
  • D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
  • D06P3/00—Special processes of dyeing or printing textiles, or dyeing leather, furs, or solid macromolecular substances in any form, classified according to the material treated
  • D06P3/34—Material containing ester groups
  • D06P3/36—Material containing ester groups using dispersed dyestuffs
• • D—TEXTILES; PAPER
  • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
  • D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
  • D06P3/00—Special processes of dyeing or printing textiles, or dyeing leather, furs, or solid macromolecular substances in any form, classified according to the material treated
  • D06P3/70—Material containing nitrile groups
  • D06P3/76—Material containing nitrile groups using basic dyes
• • 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
  • Y10S8/907—Nonionic emulsifiers for dyeing
• • 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
  • Y10S8/908—Anionic emulsifiers for dyeing
  • Y10S8/91—Soap
  • Y10S8/911—Sulfonated
• • 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
  • Y10S8/916—Natural fiber dyeing
  • Y10S8/917—Wool or silk
• • 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
  • Y10S8/92—Synthetic fiber dyeing
  • Y10S8/922—Polyester fiber
• • 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
  • Y10S8/92—Synthetic fiber dyeing
  • Y10S8/927—Polyacrylonitrile fiber
• • 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
  • Y10S8/92—Synthetic fiber dyeing
  • Y10S8/928—Polyolefin fiber
• • 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
  • Y10S8/929—Carpet dyeing

Definitions

• This invention relates to the printing of textile materials, in particular pile fabrics, and more particularly to a process for printing such materials which avoids or minimizes the occurrence in the printed material of the defect known as frostiness.
• the present invention there is provided -a process for the printing of textile materials composed of nitrogenous, acrylic, polyester or acid dyeable polypropylene fibers, wherein there is applied to the textile material a print paste which incorporates, in addition to one or more dyestuffs, a mixture of (a) a derivative of glycerol which is an ester of a carboxylic acid having four or more carbon atoms and which also contains one or more oxyalkylene groups and (b) a surface-active agent, the amount of the glycerol derivative (a) being in the range 0.1 to 0.5% of the total weight of the print paste and the' amount of the surface active agent (b) being at least equal to that of the glycerol derivative (a).
• a print paste which incorporates, in addition to one or more dyestuffs, a mixture of (a) a derivative of glycerol which is an ester of a carboxylic acid having four or more carbon atoms and which also contains one or more oxyalkylene groups
• Glycerol derivatives which are suitable for use in the process of the invention include, for example, the products of reaction of glycerol with an alkylene oxide, such as ethylene oxide or propylene oxide or mixtures thereof, which have thereafter been reacted with a carboxylic acid having four or morecarbon atoms, or alternatively partial esters of glycerol with carboxylic acids containing four 3,736,096 Patented May 29, 1973 or more carbon atoms the free hydroxyl groups in which have subsequently been reacted with an alkylene oxide. Where a number of moles of alkylene oxide used is in excess of the number of free hydroxyl groups available for reaction therewith, the derivatives may contain chains of two or more oxyalkylene groups in the molecule.
• an alkylene oxide such as ethylene oxide or propylene oxide or mixtures thereof
• Suitable carboxylic acids from which the esters may be derived include, for example, capric acid, lauric acid, stearic acid and commercially available mixtures of fatty acids containing an alkyl chain of more than four carbon atoms.
• examples of such glycerol derivatives include the condensates of glycerol monolaurate with 17 moles, 23 moles and 36 moles respectively of ethylene oxide, and the condensate of glycerol mono-oleate with 23 moles of ethylene oxide.
• a preferred glycerol derivative is the condensate of glycerol monolaurate with 23 moles of ethylene oxide.
• Surface-active agents which are suitable for use in the process of the invention include agents of the nonionic, cationic or anionic types, for example condensates of cetyl alcohol with 17 moles, 20 moles and 29 moles respectively of ethylene oxide, the condensates of nonyl phenol with 9 moles of ethylene oxide, the condensate of octadecylamine with 20 moles of ethylene oxide, lauric acid diethanolamide, the sodium salt of sulphated cetyl/ oleyl alcohol, sulphonated sperm oil and the ammonium salt of sulphated oxyethylated nonyl phenol.
• a preferred surface-active agent for use in the process of the invention is lauric acid diethanolamide.
• the amount of the glycerol derivative which is used in the process is in the range 0.1 to 0.3% of the total weight of the print paste. It is further preferred that the amount of the surface-active agent which is employed should be between 1 and 3 times the amount of the glycerol derivative.
• a particularly preferred mixture for use in the process comprises 2 parts by weight of lauric acid diethanolamide and 1 part by weight of the condensate of glycerol monolaurate with 23 moles of ethylene oxide.
• Dyestuffs which may be employed in the process of the invention include any of those dyestuffs which are conventionally used for printing textile materials, more especially pile fabrics such as carpets, the particular class of dyestuif being dependent upon the nature of the fibers of which the textile material is composed.
• the particular features of the present invention are, however, as follows.
• the print paste incorporating the dyestuff or dyestuffs together with the glycerol derivative and the surface-active agent according to the invention may also contain other ingredients which are conventional in the textile printing art, such as thickener-s and acid-producing or butfering agents.
• the print paste may be applied to the textile material by any one of the conventional techniques, for example, in the case of pile fabrics, by a design composed of foam rubber segments mounted on a roller, using the Stalwart printing machine, or by screen printing utilizing either high squeegee pressure as in the Zimmer carpet printer or vacuum suction as in the B.D.A. carpet printer.
• the textile material may be subjected to the normal processing conditions to effect fixation of the dyestuif, which with pile fabrics in most cases will consist of steaming at 100-115 C. for a period of up to minutes followed by washing-01f with water and drying.
• the print paste which is employed should contain both the glycerol derivative as hereinbefore defined and the surface-active agent.
• the omission of either of these ingredients leads to the production of prints which are markedly inferior in respect of frostiness than those which are obtained when both ingredients are used together according to the process of the invention.
• the process of the invention may be used for the printing of any suitable textile material, including in particular carpets, for example those of the loop pile, cut pile or needlefelt types, and also upholstery fabrics and blankets.
• the textile materials may be composed of nitrogenous fibers, including synthetic fibers of polyamides, such as poly (hexamethylene adipamide) and polycaprolactam, and artificial or natural fibers of regenerated proteins, silk or, more especially, wool, or of blends of such nitrogenous fibers with minor proportions of other fibers such as acetate rayon, polyester or cellulose.
• the textile material may also be composed of acrylic or modacrylic fibers consisting of polymers of acrylonitrile or copolymers containing a major proportion of acrylonitrile.
• the textile material may be composed wholly of polyester fibers, such as poly(ethylene terephthalate), or of modified (acid dyeable) polypropylene fibers.
• the print paste is applied from an impregnated foam pad to nylon 6.6 loop pile tufted carpet and the carpet is then placed in a steamer at 110 C. for a period of 10 min. The carpet is finally rinsed in cold Water, hydroextracted and dried. An excellent, tinctorially strong and uniformly colored red print is obtained.
• the tinctorial strength and uniformity is much perior to that of a s milar print in which either lauric diethanolamide or the condensate of glycerol monolaurate with ethylene oxide 1s omitted from the printing paste.
• EXAMPLE 2 A printing paste is prepared as described in Example 1, except that the 0.4 part of lauric diethanolamide is replaced With 0.4 part of the condensate of nonyl phenol with 9 mols ethylene oxide, and is applied to a nylon tufted carpet in the manner therein described. A good tinctorially strong and uniformly colored print is obtained, almost equal in appearance to the print obtained by the procedure of Example 1.
• EXAMPLE 4 The procedure described in Example 3 is repeated, except that the 0.4 part of lauric diethanolamide is replaced by 0.4 part of cetyl/oleyl sodium sulphate. A similar result to that of Example 1 is obtained.
• Example 5 The procedure described in Example 1 is repeated, except that the 0.4 part of lauric diethanolamide is replaced by 0.4 part of an aq. emulsion of sulphonated sperm oil and pine oil. A similar result to that of Example 1 is obtained.
• Example 6 The procedure described in Example 1 is repeated, except that the 0.4 part of lauric diethanolamide is replaced by 0.4 part of the condensate of actadecylamine with 20 mols of ethylene oxide. A similar result to that of Example 1 is obtained.
• Example 8 The procedure described in Example 1 is repeated, except that the 0.2 part of the condensate of glycerol monolaurate and 23 mols of ethylene oxide is replaced by 0.2 part of condensate of glycerol monolaurate and 36 mols of ethylene oxide. A similar result to that of Example 1 is obtained.
• EXAMPLE 9 The procedure described in Example 1 is repeated, ex cept that the 0.2 part of the condensate of glycerol monolaurate and 23 mols of ethylene oxide is replaced by 0.2 part of a condensate of glycerol monooleate and 23 mols of ethylene oxide. A good tinctorialy strong print is obtained, equal to the print obtained in Example 1.
• a printing recipe is prepared from:
• the print paste is applied by means of a typical carpet printing screen to nylon 6.6 loop pile tufted carpet and the carpet is then placedin a steamer at 110 C. for a period of min. The carpet is finally rinsed in cold water, hydroextracted and dried. An excellent, tinctorially strong and tjniformly colored green print is obtained.
• the strength and uniformity is much superior to that of a similar print in which either lauric diethanolamide or the condensate of glycerol monolaurate with ethylene oxide is omitted from the printing paste.
• Example 11 The procedure of Example 10 is repeated except that the dyestutr used therein is replaced by a similar amount of the dyestulf described in the Colour Index as Direct Orange 34. CI. 40215. The strength and uniformity of the print obtained is much superior to that of a print obtained by a similar procedure in which either lauric diethanolamide or the condensate of glycerol monolaurate with ethylene oxide is omitted from the printing paste.
• EXAMPLE 12 The procedure of Example 10 is repeated except that the dyestutr' used therein is replaced by a similar amount of the dyestuff described in the Colour Index as CI Reactive Orange 35. Again a strong uniformly coloured orange print is obtained.
• Example 13 The procedure of Example 10 is repeated except that the dyestulf used therein is replaced by a similar amount of the dyestuff described in the Colour Index as CI Reactive Brown 12. An excellent tinctorialy strong and uniformly colored brown print is produced.
• a printing paste is prepared from:
• the print paste is applied from an impregnated foam pad to a cut pile wool tufted carpet and the carpet is then placed in a steamer at 110 C. for 10 min. The carpet is finally rinsed in cold water, hydroextracted and dried. An excellent, tinctorially strong, uniformly colored grey print is obtained.
• the tinctorial strength and uniformity are much superior to those of a print prepared by a similar method in which either the lauric diethanolamide or the glycerol monolaurate/ethylene oxide is omitted from the print paste.
• a printing paste is prepared from:
• a printing paste is prepared from:
• the tinctorial strength and uniformity are superior to those of a print prepared by a similar method in which either the lauric diethanolamide or the glycerol monolaurate/ ethylene oxide is omitted from the print paste.
• the print paste is applied from an impregnated foam pad to a polyester needlefelt material. After printing the polyester needlefelt is placed in a steamer for 20 min. at C. The material is finally rinsed in cold water, hydroextracted and dried. An excellent, tinctorially strong print is obtained.
• the uniformity is superior to that of a print prepared by a similar method in which no surface active agent has been added.
• v 1 A process for the printing of textile materials composed of fibers selected fromv polyamide, acrylic and polyester fibers, wherein there is applied tothe textile materiala print p'aste which incorporates, in addition-to at least one dyestuff, amixture of (a) a reaction product of glycerolowith alkylene oxide and a carboxylic acid having at least four carbon atoms and (b) a surface active agent other than the reaction product (a), the amount of the reaction product (a) being in the range of 0.1 to 0.5% of the total weight of the print paste and the amount of the surface active agent (b) being at least equal to that ofthe reaction product (a).
• v 2 A process as claimed in claim 1, wherein the reaction product (a) is the condensate of glycerol monolaurate with 23 moles of ethyleneoxide. y y
• a process as claimed in claim 1 wherein the amount of the reaction product (a). is in the range 0.1 to ,0.3% of the total weight of the printed paste.

Landscapes

• Engineering & Computer Science (AREA)
• Textile Engineering (AREA)
• Chemical & Material Sciences (AREA)
• Dispersion Chemistry (AREA)
• Coloring (AREA)

Applications Claiming Priority (1)

Publications (1)

Family

ID=10383654

Family Applications (1)

Country Status (8)

Cited By (4)

Family Cites Families (1)

• 1970
  • 1970-07-24 GB GB3598170A patent/GB1344626A/en not_active Expired
• 1971
  • 1971-07-12 CA CA117,995A patent/CA947008A/en not_active Expired
  • 1971-07-12 US US00161999A patent/US3736096A/en not_active Expired - Lifetime
  • 1971-07-16 BE BE770144A patent/BE770144A/xx unknown
  • 1971-07-23 AU AU31609/71A patent/AU446925B2/en not_active Expired
  • 1971-07-23 FR FR7127145A patent/FR2099590B1/fr not_active Expired
  • 1971-07-23 DE DE19712136952 patent/DE2136952A1/de active Pending
  • 1971-07-23 NL NL7110175A patent/NL7110175A/xx unknown

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