US3679355A - Method for improving polyacrylonitrile fiber by peeling off the fiber surface with solvents - Google Patents

Method for improving polyacrylonitrile fiber by peeling off the fiber surface with solvents Download PDF

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Publication number
US3679355A
US3679355A US766550A US3679355DA US3679355A US 3679355 A US3679355 A US 3679355A US 766550 A US766550 A US 766550A US 3679355D A US3679355D A US 3679355DA US 3679355 A US3679355 A US 3679355A
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US
United States
Prior art keywords
fibers
fiber
acrylic
solvent
treated
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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
Application number
US766550A
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English (en)
Inventor
Hiroyuki Yamaguchi
Katsuyoshi Tuji
Kenji Maki
Isoo Shimonishi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Asahi Kasei Corp
Asahi Chemical Industry Co Ltd
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Asahi Chemical Industry Co Ltd
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Application filed by Asahi Chemical Industry Co Ltd filed Critical Asahi Chemical Industry Co Ltd
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Publication of US3679355A publication Critical patent/US3679355A/en
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    • 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
    • D06M11/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising
    • D06M11/51—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with sulfur, selenium, tellurium, polonium or compounds thereof
    • D06M11/55—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with sulfur, selenium, tellurium, polonium or compounds thereof with sulfur trioxide; with sulfuric acid or thiosulfuric acid or their salts

Definitions

  • the process in which acrylic fibers react with a solvent and are dissolved thereby is as follows: First, the swelling action of the solvent rapidly progresses fi'om fiber surface to inner portion. The swelling of the surface layer gradually, becomes higher and polymer molecules of fibers slowly disperse into the solvent,-whereby the dis solution of fibers progresses.
  • the dissolution of acrylic fibers comprises two stages of swelling and dispersing, and the swelling velocity is always extremely higher than the dispersing velocity. Due to this fact, a swelled layer is always present regardless of the time at which fibers are transferred to a step for remov ing the solvent and the swelled layer is deswelled to form a recoagulated polymer layer. Further, the recoagulated polymer layer of acrylic fibers strongly adheres to the fibers and does not easily fall off from the fibers.
  • the range of the concentration in which the peeling of fibers is possible and the degree of effects obtained by peeling also vary depending upon the previous treatment of the fibers and material to be treated, such as scouring condition, heat set condition, surfactant used and sizing material.
  • EXAMPLE 9 w I - Koma rinzu (figuredstain) fabric waswoverr using acrylic filament yarns of 75 deniers (about 400 times/m. S twist yarn) as warp and acrylic filament yarns of 75 deniers (about 600 times/m. S twist yarn was Z twisted about 600 times/m. in the form of two folded yarn) as weft.
  • This fabric was dipped in an aqueous solution containing 50.0% of nitric acid and 0.5% of urea at 10 C. for 20 minuteswhile unceasingly stirring; then water washed and dried. The weight of the fabric thus treated was reduced by 6.2%.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Chemical Or Physical Treatment Of Fibers (AREA)
  • Artificial Filaments (AREA)
  • Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
US766550A 1967-10-16 1968-10-10 Method for improving polyacrylonitrile fiber by peeling off the fiber surface with solvents Expired - Lifetime US3679355A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6607967 1967-10-16

Publications (1)

Publication Number Publication Date
US3679355A true US3679355A (en) 1972-07-25

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ID=13305468

Family Applications (1)

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US766550A Expired - Lifetime US3679355A (en) 1967-10-16 1968-10-10 Method for improving polyacrylonitrile fiber by peeling off the fiber surface with solvents

Country Status (4)

Country Link
US (1) US3679355A (es)
DE (1) DE1802986A1 (es)
ES (1) ES358985A1 (es)
FR (1) FR1588674A (es)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3928528A (en) * 1970-05-27 1975-12-23 Mitsubishi Rayon Co Process for producing acrylic fibers having excellent pilling resistance
US3929946A (en) * 1970-05-15 1975-12-30 Mitsubishi Rayon Co Process for producing hygroscopic acrylic fibers
US4061834A (en) * 1976-06-03 1977-12-06 The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration Durable antistatic coating for polymethylmethacrylate
US4086055A (en) * 1976-10-04 1978-04-25 Milliken Research Corporation Surface modified continuous filament yarn and method of producing same
US4183884A (en) * 1973-01-24 1980-01-15 Ceskoslovenska Akademie Ved Method for manufacturing hydrogel tubes

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3929946A (en) * 1970-05-15 1975-12-30 Mitsubishi Rayon Co Process for producing hygroscopic acrylic fibers
US3928528A (en) * 1970-05-27 1975-12-23 Mitsubishi Rayon Co Process for producing acrylic fibers having excellent pilling resistance
US4183884A (en) * 1973-01-24 1980-01-15 Ceskoslovenska Akademie Ved Method for manufacturing hydrogel tubes
US4061834A (en) * 1976-06-03 1977-12-06 The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration Durable antistatic coating for polymethylmethacrylate
US4086055A (en) * 1976-10-04 1978-04-25 Milliken Research Corporation Surface modified continuous filament yarn and method of producing same

Also Published As

Publication number Publication date
ES358985A1 (es) 1970-05-16
DE1802986A1 (de) 1969-06-19
FR1588674A (es) 1970-04-17

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