KR100225605B1 - Method of manufacturing the spandex yarn - Google Patents

Method of manufacturing the spandex yarn

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Publication number
KR100225605B1
KR100225605B1 KR1019950066471A KR19950066471A KR100225605B1 KR 100225605 B1 KR100225605 B1 KR 100225605B1 KR 1019950066471 A KR1019950066471 A KR 1019950066471A KR 19950066471 A KR19950066471 A KR 19950066471A KR 100225605 B1 KR100225605 B1 KR 100225605B1
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KR
South Korea
Prior art keywords
reaction
prepolymer
present
minutes
bubbles
Prior art date
Application number
KR1019950066471A
Other languages
Korean (ko)
Other versions
KR970043407A (en
Inventor
서승원
이경준
조상원
Original Assignee
전원중
주식회사효성
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Publication date
Application filed by 전원중, 주식회사효성 filed Critical 전원중
Priority to KR1019950066471A priority Critical patent/KR100225605B1/en
Publication of KR970043407A publication Critical patent/KR970043407A/en
Application granted granted Critical
Publication of KR100225605B1 publication Critical patent/KR100225605B1/en

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Classifications

    • 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
    • D01F6/70—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolycondensation products from polyurethanes
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
    • D01D5/00—Formation of filaments, threads, or the like
    • D01D5/04—Dry spinning methods
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
    • D01D5/00—Formation of filaments, threads, or the like
    • D01D5/06—Wet spinning methods
    • D—TEXTILES; PAPER
    • D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
    • D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
    • D02G3/00—Yarns or threads, e.g. fancy yarns; Processes or apparatus for the production thereof, not otherwise provided for
    • D02G3/02—Yarns or threads characterised by the material or by the materials from which they are made
    • D—TEXTILES; PAPER
    • D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
    • D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
    • D02G3/00—Yarns or threads, e.g. fancy yarns; Processes or apparatus for the production thereof, not otherwise provided for
    • D02G3/22—Yarns or threads characterised by constructional features, e.g. blending, filament/fibre
    • D02G3/32—Elastic yarns or threads ; Production of plied or cored yarns, one of which is elastic
    • D—TEXTILES; PAPER
    • D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B2331/00—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products
    • D10B2331/10—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products polyurethanes
    • D—TEXTILES; PAPER
    • D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B2401/00—Physical properties
    • D10B2401/06—Load-responsive characteristics
    • D10B2401/061—Load-responsive characteristics elastic

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Polyurethanes Or Polyureas (AREA)
  • Artificial Filaments (AREA)

Abstract

본 발명은 유기 디이소시아네이트(A)와 고분자 디올(B)을 반응시켜 프리폴리머(D)를 수득하고 이것을 디아민(C)과 반응시켜 폴리우레탄 용액을 수득한 후 건식 또는 습식방사하여 스판덱스사를 제조함에 있어 프리폴리머 반응 초기 30분간의 온도를 30~60℃로, 그 이후부터 반응 완료시까지는 60~100℃로 유지시키고 각 반응물에 기포가 함유되지 않도록 하는 것을 특징으로 하는 것으로, 본 발명에서 제시된 방법으로 제조된 폴리우레탄 용액은 겔의 함량이 감소되어 최종 생산된 제품의 품질 향상을 가져올 수 있다.The present invention provides a prepolymer (D) by reacting an organic diisocyanate (A) with a polymer diol (B), which is then reacted with a diamine (C) to obtain a polyurethane solution, followed by dry or wet spinning to prepare spandex. It is characterized by maintaining the temperature of the initial 30 minutes of the prepolymer reaction at 30 ~ 60 ℃, from thereafter until the completion of the reaction at 60 ~ 100 ℃ and containing no bubbles in each reactant, prepared by the method proposed in the present invention Polyurethane solution can reduce the content of gel, resulting in improved quality of the final product.

Description

스판덱스사의 제조방법Manufacturing method of spandex

본 발명은 스판덱스사의 제조방법에 관한 것으로, 보다 구체적으로는 필라멘트간의 데니아 격차가 감소된 고품질 스판덱스사의 제조방법에 관한 것이다.The present invention relates to a method for producing spandex yarn, and more particularly, to a method for manufacturing high quality spandex yarn having a reduced denia gap between filaments.

종래, 스판덱스사는 각 필라멘트간의 데니아 격차가 큼으로 인해 편직시 사절을 유발하는 문제점이 있었다. 이것은 사의 제조 과정 중 반응물에 함유된 기포로 인해 부분적으로 분자량이 급격히 상승된 물질(이하 겔이라 함)이 생성되어 방사노즐 벽면에 정체됨으로써 데니어간의 격차를 유발하였기 때문인 것으로 알려지고 있다.In the related art, spandex yarn has a problem of causing trimming when knitting due to a large denia gap between each filament. This is known to be caused by the denier gap due to the formation of a substance (hereinafter referred to as a gel) whose molecular weight is rapidly increased due to the bubbles contained in the reactants during the manufacturing process of the yarn and stagnant on the spinneret wall.

본 발명의 목적은 종래의 이러한 문제점을 해결하기 위한 것으로, 필라멘트간의 데니어 격차를 줄여 직물을 제조했을 때 편직 사절이 발생하지 않는 스판덱스사의 제조방법을 제공하는데 있다.SUMMARY OF THE INVENTION An object of the present invention is to solve such a problem in the related art, and to provide a method for manufacturing spandex that does not cause knitting thread when fabric is produced by reducing the denier gap between filaments.

즉, 본 발명은 유기 디이소시아네이트(A)와 고분자 디올(B)을 반응시켜 예비합성물질(D)(이하 프리폴리머라함)을 제조하고, 이 프리폴리머에 디아민(C)을 반응시켜 폴리우레탄 용액을 제조한 다음 건식 또는 습식방사 함으로써 스판덱스사를 제조함에 있어서, 상기(A)와 (B)의 반응 초기 30분간의 온도를 30~60℃로 유지시키고 30분 이후부터 반응 완료시점 까지는 60-100℃로 유지시키며, 상기 각 반응 단계를 진공상태로 유지시켜 각 반응물에 기포가 함유되지 않도록 하는 것을 특징으로 한 스판덱스사의 제조방법을 제공하는 것이다.That is, in the present invention, a presynthetic material (D) (hereinafter referred to as a prepolymer) is prepared by reacting an organic diisocyanate (A) with a polymer diol (B), and a diamine (C) is reacted with the prepolymer to prepare a polyurethane solution. Then, in preparing the spandex yarn by dry or wet spinning, the temperature of the first 30 minutes of the reaction of (A) and (B) is maintained at 30 to 60 ° C. and after 30 minutes to 60-100 ° C. until the completion of the reaction. It is to provide a method for producing a spandex, characterized in that to maintain each of the reaction steps in a vacuum state so that no bubbles are contained in each reactant.

본 발명자는 종래 60~100℃의 어떤 일정온도에서 상기(A)+(B)반응을 수행하는 것이 초기 고온에서의 빠른 반응으로 급격한 부분적 분자량 상승을 불러오고 이것이 겔을 형성하여 방사 노즐 벽면에 정체됨으로써 데니아 격차를 유발함을 알고 본 발명에서는 상술한 바와 같이 (A)+(B)반응초기 30분간은 30~60℃로, 그 이후 종료시까지는 60~100℃로 함으로써 이 문제를 해결하고자 하였다.The inventors of the present invention carried out the (A) + (B) reaction at a certain temperature of 60 ~ 100 ℃ in a rapid reaction at the initial high temperature causes a rapid partial molecular weight rise, which forms a gel and stagnates on the spinning nozzle wall In the present invention, as described above, the above-mentioned (A) + (B) reaction 30 minutes in the initial 30 minutes, as described above was to solve this problem by 60 to 100 ℃ until the end thereafter.

본 발명에서는 또한 종래기술에 있어 문제시 되던 기포생성의 방지를 위해 유기디이소시아네이트(A), 고분자 디올(B), 디아민(C) 및 프리폴리머(D)가 반응기에 유입되기 전의 저장조에서 함유하고 있는 기포를 제거하는 것으로, 여기서 기포라 함은 공기, 질소, 비활성 기체등 각종 기체가 반응물인 액체내에 포함되어 있는 상태를 의미한다.In the present invention, the organic diisocyanate (A), the polymer diol (B), the diamine (C) and the prepolymer (D) are contained in the storage tank before the reactor is introduced to prevent bubble formation, which is a problem in the prior art. Bubble is removed, where bubble refers to a state in which various gases such as air, nitrogen, inert gas, and the like are contained in the reactant liquid.

기포를 제거하는 구체적인 방법으로는 첫째로 반응물을 어느정도의 진공상태가 되게 하는 방법, 두번째 온도 및 압력을 조절하는 방법 및 배관구조를 적절히 조절하는 방법등이 가능하나, 본 발명에서는 진공상태를 이용한 방법을 채택하여 사용함을 특징으로 한다.As a specific method of removing bubbles, a method of firstly making the reactant to a certain degree of vacuum, a method of adjusting the temperature and pressure, and a method of appropriately adjusting the piping structure are possible, but in the present invention, a method using a vacuum state It is characterized by using.

본 발명에서 제시된 방법으로 제조된 프리폴리머(D) 및 폴리우레탄 용액은 겔의 함량이 감소되어 최종 생산된 제품의 품질 향상을 가져올 수 있다.The prepolymer (D) and the polyurethane solution prepared by the method presented in the present invention can reduce the content of the gel can lead to an improved quality of the final product.

이하 실시예를 들어 본 발명을 설명하나, 본 발명의 사상과 범주는 실시예에 의하여 한정되지 않는다.Hereinafter, the present invention will be described with reference to Examples, but the spirit and scope of the present invention are not limited by Examples.

[실시예]EXAMPLE

유기디이소시아네이트(A)로서 4,4-디페닐메탄이소시아네이트를, 고분자디올(B)로서 폴리테트라메틸렌글리콜을 사용 반응시켜 프리폴리머(D)를 제조하고, 이 프리폴리머(D)와 디아민(C)으로서 에틸렌디아민을 선택하여 상호 반응시키고, 용매(E)로서 디메틸아세트아미드를 사용하여 폴리우레탄 요액을 제조함이 있어서 반응물 저장조에 진공을 걸어 반응물의 기포가 완전히 제거된 후에 반응기에 유입되도록 하였고 프리폴리머(D)를 제조함에 있어서 반응 초기 30분간 온도를 40℃로, 30분 이후부터 반응 완료시 까지는 80℃로 유지하였다. 그 결과를 표 1에 나타내었다.4,4-diphenylmethane isocyanate is reacted as an organic diisocyanate (A) and polytetramethylene glycol is used as a polymer diol (B), and a prepolymer (D) is produced and this prepolymer (D) and a diamine (C) are reacted. Ethylenediamine was selected and reacted with each other, and a polyurethane urine was prepared using dimethylacetamide as a solvent (E). The vacuum was applied to a reaction tank so that the bubbles of the reactants were completely removed and then introduced into the reactor. In the preparation of), the temperature was maintained at 40 ° C. for the first 30 minutes of the reaction, and 80 ° C. after the completion of the reaction from 30 minutes. The results are shown in Table 1.

[비교예 1]Comparative Example 1

프리폴리머를 제조함에 있어 반응 초기부터 반응 완료시점까지 온도를 계속 80℃로 유지하였고, 반응물의 기포를 제거하지 않은 상태를 제외하고는 실시예와 동일한 조건하에 반응을 진행시켜 그 결과를 표 1에 함께 나타내었다.In preparing the prepolymer, the temperature was continuously maintained at 80 ° C. from the beginning of the reaction to the completion of the reaction, and the reaction was performed under the same conditions as in Example except that the bubbles of the reactants were not removed. Indicated.

[비교예 2]Comparative Example 2

각 반응물의 기포를 제거하지 않은 상태에서 반응을 실시한것 외에는 실시예와 동일하게 실시하고 그 결과를 표 1에 나타내었다.The reaction was carried out in the same manner as in Example, except that the reaction was carried out without removing the bubbles of each reactant, and the results are shown in Table 1.

[표 1]TABLE 1

Claims (1)

유기디이소시아네이트(A)와 고분자디올(B)을 반응시켜 프리폴리머(D)를 제조 하고, 이 프리폴리머(D)에 디아민(C)을 반응시켜 폴리우레탄 용액을 제조한 다음 건식 또는 습식방사 함으로써 스판덱스사를 제조함에 있어서, 상기(A)와 (B)의 반응 초기 30분간의 온도를 30~60℃로 유지시키고 30분 이후부터 반응 완료시점까지는 60~100℃로 유지시키며, 상기 각 반응 단계를 진공상태로 유지하여 기포가 함유되지 않도록 하는 것을 특징으로 하는 스판덱스사의 제조방법.By reacting an organic diisocyanate (A) and a polymer diol (B) to prepare a prepolymer (D), and reacting the diamine (C) to the prepolymer (D) to prepare a polyurethane solution and then spundex by dry or wet spinning In the preparation, the temperature of the initial 30 minutes of the reaction of (A) and (B) is maintained at 30 ~ 60 ℃ and after 30 minutes from the completion of the reaction to 60 to 100 ℃, each reaction step vacuum A method for producing a spandex yarn, characterized in that it is maintained in a state so that bubbles are not contained.
KR1019950066471A 1995-12-29 1995-12-29 Method of manufacturing the spandex yarn KR100225605B1 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101799706B1 (en) 2016-12-26 2017-11-21 주식회사 효성 A process for preparing a spandex fiber having improved productivity by dry spinning

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20160077238A (en) * 2014-12-22 2016-07-04 주식회사 효성 Method for increasing pH of spandex by using inorganic additives

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR930701645A (en) * 1991-04-26 1993-06-12 나카무라 히사오 Polyurethane elastic fiber

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR930701645A (en) * 1991-04-26 1993-06-12 나카무라 히사오 Polyurethane elastic fiber

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101799706B1 (en) 2016-12-26 2017-11-21 주식회사 효성 A process for preparing a spandex fiber having improved productivity by dry spinning

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