Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B32—LAYERED PRODUCTS
  • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
  • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
  • B32B5/22—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed
  • B32B5/24—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer
  • B32B5/26—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer another layer next to it also being fibrous or filamentary
• • D—TEXTILES; PAPER
  • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
  • D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
  • D01F1/00—General methods for the manufacture of artificial filaments or the like
  • D01F1/02—Addition of substances to the spinning solution or to the melt
  • D01F1/09—Addition of substances to the spinning solution or to the melt for making electroconductive or anti-static filaments
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B32—LAYERED PRODUCTS
  • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
  • B32B25/00—Layered products comprising a layer of natural or synthetic rubber
  • B32B25/10—Layered products comprising a layer of natural or synthetic rubber next to a fibrous or filamentary layer
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B32—LAYERED PRODUCTS
  • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
  • B32B25/00—Layered products comprising a layer of natural or synthetic rubber
  • B32B25/14—Layered products comprising a layer of natural or synthetic rubber comprising synthetic rubber copolymers
• • D—TEXTILES; PAPER
  • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
  • D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
  • D01F6/00—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof
  • D01F6/58—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolycondensation products
  • D01F6/60—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolycondensation products from polyamides
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B32—LAYERED PRODUCTS
  • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
  • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
  • B32B2262/02—Synthetic macromolecular fibres
  • B32B2262/0261—Polyamide fibres
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B32—LAYERED PRODUCTS
  • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
  • B32B2305/00—Condition, form or state of the layers or laminate
  • B32B2305/10—Fibres of continuous length
  • B32B2305/18—Fabrics, textiles
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B32—LAYERED PRODUCTS
  • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
  • B32B2471/00—Floor coverings
  • B32B2471/02—Carpets

Definitions

• a shock-proof carpet system having a face yarn of textured nylon containing up to about twelve weight percent of an internal additive selected from ethylene oxide condensation products, a primary backing of jute or spunbonded synthetic material, a tuft-locking latex made electrically conductive by the additive of up to about ten weight percent of an antistatic material, and a standard secondary backing.
• This invention relates to a shock-proof carpet system based on nylon. More particularly it relates to an improved carpet system based on nylon made shock-proof by use of certain additives. And, still more particularly it relates to a carpet system based on nylon made shockproof by use of additives that actually improve its shockproofness as the carpet system Wears.
• Carpet systems are well known to generate considerable charges of static electricity when a person in contact therewith traverses the carpet systems fibrous layer. Such charges are quite naturally transferred to the person traversing said carpet system and upon grounding, the charges are discharged causing momentary shock and a source of considerable irritation. And, although several carpet systems have been devised in an effort to improve this system, all tend to become less and less viable with use.
• One such static-discharging floor covering system is disclosed in U.S. Pat.
• a prime object of this invention is to provide a shock- -proof carpet system. Another object of this invention is to provide a shock-proof nylon carpet system. A further object of this invention is to provide a shock-proof nylon carpet system wherein the additives utilized in making such carpet system are maintained in the carpet system throughout the life of the carpet system. A still further object of this invention is to provide a shock-proof nylon carpet system wherein the static electricity buildup is lower than the threshold of sensitivity to humans. And, a still further object of this invention is to provide a shock-proof nylon carpet system wherein the static electricity buildup gets actually lower or improves its shock proof effectiveness with normal use. Other objects will appear hereinafter as the description of the invention proceeds.
• an antistatic textile article comprising a fibrous textile layer of the pile type, said pile being prepared from a polyamide fiber containing between about 1% and about 12% by Weight of a predominantly branched, chain-extended polymer of the reaction product of a compound represented by the formula:
• R is a difunctional radical from a hydrocarbon containing 1 to 13 carbon atoms, and at least one compound selected from the group consisting of diepoxides and compounds which yield the following divalent radicals:
• R is a difunctional radical derived from aromatic, heterocyclic, cycloaliphatic or aliphatic hydrocarbons or combinations of them having said fibrous pile secured to a primary backing, and an adhesive conductive latex backing added thereto.
• the adhesive conductive latex is made conductive by containing up to ten Weight percent of said latex from a compound selected from the group consisting of the reaction product of a compound represented by the formula:
• R is a difunctional radical from a hydrocarbon containing 1 to 13 carbon atoms, and at least one compound selected from the group consisting of diepoxides and compounds which yield the following divalent radicals:
• R is a difunctional radical derived from aromatic, heterocyclic, cycloaliphatic or aliphatic hydrocarbons or combinations of them having said fibrous pile secured to a primary backing, and an adhesive conductive latex backing added thereto and polyethylene oxide.
• the antistatic-fiber of this invention can contain certain conventional additives without any adverse efiects upon the overall shock-proof carpet system of this invention. That is, the carpet system of this invention is compatible in all instances with other additives, naturally either necessary or desirable, such as, dyeing assists and colorants, stabilizers, antioxidants and delustrants among others.
• such improved shock-proof carpet system of this invention not only provides a shock-proof carpet system initially below the threshold of sensitivity to humans, but actually improves its shock-proof efiectiveness with use.
• threshold of sensitivity to humans has been established at between approximately about 2500 to about 4000 volts. See Modern Textiles, April 1971 publication, article A Shock-Free Carpet System At 10% Relative Humidity and papers of the American Association For Textile Technology, Inc. by D. H. Martin, R. D. Radford and K. R. Lea.
• Another static test procedure for textiles is described in technical bulletin No. 2-015, dated 3/1/70 by Brunswick Corporation, Technical Products Div., 69 W. Washington St., Chicago, 111 60602.
• Example 1 Polycaproamide polymer is used having a moisture content of 0.05% to 0.10%, total constituents extractable by hot water of 1% to 2%, and formic acid relative viscosity of 62.
• the polymer contains about 0.2% titanium dioxide dulling agent, antioxidant, and 6% of an antistatic agent consisting of a polyether of dimethylterephthalate and Tetronic 1504 supplied by Wyandotte and covered under US. Pat. 2,979,528 by Lunsted.
• the Tetronic 1504 is one of man ytetrol compounds commercially available as tetronic series block copolymers having molecular weights between 1650 and 26,000. This series varies in length of poly(oxyethylene) chain and poly(oxypropylene) chain.
• each code number indicates the molecular composition.
• the first two explain the average molecular weight of the hydrophobe (poly(oxypropylene) branches on the alkylenediamine).
• the last digit of each code number represents the weight percentage of hydrophilic (poly(oxyethylene) units to the nearest 10%
• the antistatic material is metered at the hopper with the polycaproamide polymer and both are fed into a screw extruder havin gan exit temperature of 260 C.
• the polymer is forwarded at a pressure of 1900 p.s.i.g.
• the freshly extruded filaments descend a spinning tower into which is air conditioned at 70 F. and 65% relative humidity is admitted.
• the yarn emerging from the spinning tower contacts a ceramic roll which applies a lubricant finish, and the yarn then is wound onto a package at 1850 feet per minute.
• the yarn thus obtained has a denier of 3150, is drawn over a /8 inch diameter draw pin at a delivery rate of 1536 feet per minute which is 3.01 times the feed rate in order to obtain a dra'wn yarn denier of 1050 denier.
• Each of the '70 filaments has a .denier of 15. During drawing the yarn is passed 5 wraps trolled at 20% are compared in Table I with control carpets.
• Example 2 As in Example 1, except that the 6% antistatic agent containing an antioxidant is added by injection at the point where the molten polymer is extruded from the reactor prior to pelletizing. The subsequent Washing cycles to extract any unreacted lactam and oligomers from the pellets did not effect the concentration of the antistat in the polymer as the antistat is insoluble in water. After washing and drying, the polymer was processed as in Example 1. The maximum voltage generated in RV in the Walk Test is 2.4 initially. It shows 2.2 after 20M treads and 2.0 after 40M treads.
• Example 3 As in Example 1, except that 400 ends of undrawn yarn are combined into a tow. The tow is drawn, crimped and cut into 6.5 inch long staple, all in a continuous operation. The staple is then spun into a 2.25 with 3.5 Z twist and converted into 40 ounces/yd. cut pile plush type carpets. The maximum voltage generated in KV in the Walk Test is 2.3. After 20M treads it dropped to 2.2 and after 40M treads it dropped to 2.01.
• Example 4 As in Example 1, except that nylon 6,6 polymer is used. Continuous and staple yarns are prepared and the results in the carpets were as follows: initial KV is 2.9; after 20M treads, 2.1 KV; and after 40M treads the KV is 1.5.
• Example 5 As in Example 1, except the yarn internal antistatic additive is added in an amount of 10 weight percent of the polymer. The resulting maximum voltage in the carpet is equivalent to results in Table I.
• Example 6 As in Example 1, except the yarn internal antistatic additive is also used in the conductive latex. The resulting maximum voltage in the carpet is equivalent to results in Table I.
• said coating containing an additive to reduce buildup of static electricity the improvement consisting essentially of using for said additive to reduce buildup of static electricity in said polyamide fiber between about 1 percent and about 12 percent by weight of a predominantly branched chainextended compound represented by the formula where a, b, c, d, w, x, y, and z are each a whole number and R is a difunctional radical from a hydrocarbon containing 1 to 13 carbon atoms, and at least one compound selected from the group consisting of diepoxides and compounds which yield the following divalent radicals:
• R is a difunctional radical derived from aromatic, heterocyclic, cycloaliphatic or aliphatic hydrocarbons or combinations of them whereby said textile article will generate less than 3 kilovolts of static electricity by the walk test and the static electricity buildup gets lower with normal use of said textile article.
• polyamide is selected from the group consisting of polycaproamide and polyhexamethylene adipamide.

Landscapes

• Engineering & Computer Science (AREA)
• Chemical & Material Sciences (AREA)
• Chemical Kinetics & Catalysis (AREA)
• General Chemical & Material Sciences (AREA)
• Textile Engineering (AREA)
• Manufacturing & Machinery (AREA)
• Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
• Carpets (AREA)
• Artificial Filaments (AREA)
• Laminated Bodies (AREA)

Priority Applications (14)

Applications Claiming Priority (1)

Publications (1)

Family

ID=22901906

Family Applications (1)

Country Status (11)

Cited By (2)

Families Citing this family (1)

• 1972
  • 1972-03-29 US US00239378A patent/US3834977A/en not_active Expired - Lifetime
• 1973
  • 1973-02-26 CA CA164,555A patent/CA988404A/en not_active Expired
  • 1973-03-27 GB GB1473273A patent/GB1425832A/en not_active Expired
  • 1973-03-28 JP JP48034710A patent/JPS4915218A/ja active Pending
  • 1973-03-28 DE DE2315438A patent/DE2315438A1/de active Pending
  • 1973-03-29 CH CH456673D patent/CH456673A4/xx not_active IP Right Cessation
  • 1973-03-29 IT IT22348/73A patent/IT981762B/it active
  • 1973-03-29 LU LU67328A patent/LU67328A1/xx unknown
  • 1973-03-29 FR FR7311422A patent/FR2178209B1/fr not_active Expired
  • 1973-03-29 BE BE129410A patent/BE797500A/xx unknown
  • 1973-03-29 AT AT279273A patent/AT335967B/de not_active IP Right Cessation
  • 1973-03-29 CH CH456673A patent/CH574229B5/xx not_active IP Right Cessation

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