JPH0357205B2 - - Google Patents

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Publication number
JPH0357205B2
JPH0357205B2 JP15196189A JP15196189A JPH0357205B2 JP H0357205 B2 JPH0357205 B2 JP H0357205B2 JP 15196189 A JP15196189 A JP 15196189A JP 15196189 A JP15196189 A JP 15196189A JP H0357205 B2 JPH0357205 B2 JP H0357205B2
Authority
JP
Japan
Prior art keywords
enzyme
scouring
silk
raw silk
minutes
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
Application number
JP15196189A
Other languages
Japanese (ja)
Other versions
JPH0319905A (en
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed filed Critical
Priority to JP15196189A priority Critical patent/JPH0319905A/en
Publication of JPH0319905A publication Critical patent/JPH0319905A/en
Publication of JPH0357205B2 publication Critical patent/JPH0357205B2/ja
Granted legal-status Critical Current

Links

Description

【発明の詳細な説明】[Detailed description of the invention]

産業上の利用分野 本発明は、生糸の酵素精練用の助剤に関する。 従来技術 生糸の精練によるセリシンの練減りをコントロ
ールできれば、その用途が広がるとして種々の検
討されており、一部下記の如き方法の実施が試み
られているが、いずれの方法も、製品の練減りが
不均一である、風合が悪くなるなどの問題があ
り、実用化できるものではなかつた。 (1) 石鹸、ソーダ塩にて処理温度70〜81℃で15〜
30分処理してハイドロサルフアイトを投入して
精練を止める方法。 (2) 精練廃液にアンモニア、柔軟剤を加えて一晩
浸漬する方法。 (3) 比イオン界面活性剤と、柔軟剤で処理温度40
〜60℃で20〜40分処理する方法。 そこで、酵素精練という方法が考えられるが、
中性プロテアーゼ、アルカリプロアーゼなどを使
用した酵素精練において、セリシンを溶解するに
はアルカリが必要とされが、酵素に100%の効果
を発揮させるには、PH7〜10の範囲にPHを調整す
る必要がある。しかし、処理浴中のPH調整は非常
に困難である。 特に酵素精練は温度が低く、50〜60℃で精練す
るから熱によるセリシンの溶解はなく、あくまで
も酵素の活性の強さによつて蛋白質が分解される
ので、どのようにして酵素を強く働かすかが問題
となる。 また、生糸には、撚糸油、無機質と不純物が多
く含有されているので、酵素単独では充分な精練
ができず不上がりの原因にもなる。 工業的な生糸の酵素精練において、アルカリを
追加しながらPH調整することは非常に困難であ
り、アルカリが強すぎれば酵素は死滅し、生糸も
弱くなり、逆にアルカリが弱すぎれば酵素が不活
性となる。そのため酵素精練が工業的に実用化さ
れていないのである。 発明の解決しようとする問題点 本発明は、このような酵素精練を工業的に作業
性よく実施でき、しかも生糸のセリシンの練減り
の制御をも可能とする酵素精練用助剤を提供する
ことを課題とする。 課題を解決するための手段 本発明は、重炭酸ナトリウム、炭酸ナトリウム
を及び中性亜硫酸ナトリウムの三成分を組み合わ
せて使用することによつて、上記課題を解決し
た。 重炭酸ナトリウムと炭酸ナトリウムは中和剤と
して働き、中性亜硫酸ナトリウムは酵素の活性促
進剤として機能するものであり、酵素を投入する
前に、本発明の助剤で前処理すると生糸の撚糸
油、無機質の不純物などがきれいに除去され、し
かもPHも8〜9と酵素に適したものとなる。従つ
て、この時点で酵素を投入して精練すると絹特有
の光沢とやわらかい風合に安定して練り上がる。 助剤中、重炭酸ナトリウムと炭酸ナトリウムは
重量比率で1:3〜3:1の割合で使用されるの
が好ましく、重炭酸ナトリウムと炭酸ナトリウム
の合計量に対して中性亜硫酸ナトリウムは重量比
率で10:1〜3:1、特に5:1〜4:1の割合
で使用されるのが好ましい。 中和剤として重炭酸ナトリウムを単独で使用す
ると酵素の活性化が十分でなく、酵素精練効果を
制御できなく、また逆に炭酸ナトリウムを単独で
使用するとPHが10以上になり、酵素が死滅し、や
はり精練不完全となる。 なお、中性亜硫酸ナトリウムは、重炭酸ナトリ
ウムと炭酸ナトリウムの合計量に対して、1/3よ
り多く用いても効果は変わらず、無駄である。 本発明の助剤は、一般に対繊維重量当たり下記
のような割合で使用すれば十分である。 生糸の場合 5〜7% 野蚕糸の場合 4〜6% 生布の場合 10〜15% シルクウールの場合 2〜4% シルクとの混紡糸の場合 2〜5% 使用温度は60〜98℃であるのが好ましく、この
温度で上述の如き割合で本発明の助剤を含む浴に
生糸等を浸漬し、約15〜60分間処理した後、50〜
60℃の時に酵素を投入し、酵素精練することによ
り、短時間で均一な精練が可能となる。なお、野
蚕糸の精練は困難とされていたが、本発明の助剤
により酵素精練が可能となつたため、野蚕糸の需
要を高めることができ、更には、従来不可能とさ
れていたセリシン練減りの制御も、この助剤の使
用により可能となる。 実施例 重炭酸ナトリウム、炭酸ナトリウム及び中性亜
硫酸ナトリウムを重量比率で2:2:1の割合で
配合して本発明の助剤(A)を製造した。 この助剤(A)を使用して、下記の3種の酵素精練
を実施した。 いずれの精練も、最初に酵素助剤(A)のみを含む
約60℃の処理浴に生糸を15〜30分間浸漬(浴比
1:20〜30)し、その後に酵素とラーゼンパワー
をこの浴に添加し、50〜60℃で更に10〜20分間処
理し、更に該処理浴から取りだした生糸を70〜90
℃で10〜20分間湯洗いして実施した。 3分練り 酵素助剤(A) 4%(対繊維重量) 酵素(*1) 0.3%(対繊維重量) ラーゼンパワー(*2) 1%(対繊維重量) 5分練り 酵素助剤(A) 7%(対繊維重量) 酵素(*1) 1%(対繊維重量) ラーゼンパワー(*2) 1%(対繊維重量) 8分練り 酵素助剤(A) 10%(対繊維重量) 酵素(*1) 2%(対繊維重量) ラーゼンパワー(*2) 1%(対繊維重量) *(1) 細菌性アルカリプロテアーゼ *(2) 幸新堂化学工業所の高分解性精練洗浄剤
(非イオン性界面活性剤) その結果、第1表に示すように、いずれの生糸
においても、3分練り、5分練り、8分練りと所
望の練減り率で均一な品質のよい精練品を得るこ
とができた。
INDUSTRIAL APPLICATION FIELD The present invention relates to an aid for enzymatic scouring of raw silk. PRIOR TECHNOLOGY If the loss of sericin due to scouring of raw silk can be controlled, its uses will be expanded, and various studies have been carried out, and some of the methods described below have been attempted, but none of the methods have been found to reduce the There were problems such as uneven texture and poor texture, and it could not be put to practical use. (1) Treatment with soap and soda salt at a temperature of 70 to 81℃ from 15 to
Method of processing for 30 minutes and adding hydrosulfite to stop scouring. (2) A method of adding ammonia and softener to the scouring waste and soaking it overnight. (3) Treatment temperature 40 with specific ionic surfactant and softener
Method of processing at ~60℃ for 20-40 minutes. Therefore, a method called enzyme scouring can be considered.
In enzyme refining using neutral protease, alkaline protease, etc., alkali is required to dissolve sericin, but in order for the enzyme to be 100% effective, the pH must be adjusted to a range of 7 to 10. There is a need. However, adjusting the pH in the treatment bath is very difficult. In particular, enzyme scouring uses a low temperature, scouring at 50 to 60℃, so there is no dissolution of sericin due to heat, and the protein is broken down depending on the strength of the enzyme activity, so it is important to know how to make the enzyme work strongly. becomes a problem. In addition, since raw silk contains a large amount of twisting oil, inorganic substances, and impurities, enzymes alone cannot scouring it sufficiently and may cause failure. In industrial enzyme scouring of raw silk, it is very difficult to adjust the pH while adding alkali; if the alkali is too strong, the enzymes will die and the raw silk will become weak; conversely, if the alkali is too weak, the enzymes will become inactive. Becomes active. For this reason, enzyme scouring has not been put into practical use industrially. Problems to be Solved by the Invention It is an object of the present invention to provide an enzyme scouring aid that allows such enzyme scouring to be carried out industrially with good workability and also enables control over the loss of sericin in raw silk. The task is to Means for Solving the Problems The present invention has solved the above problems by using a combination of three components: sodium bicarbonate, sodium carbonate, and neutral sodium sulfite. Sodium bicarbonate and sodium carbonate function as neutralizing agents, and neutral sodium sulfite functions as an enzyme activity promoter.When pre-treated with the auxiliary agent of the present invention before adding the enzyme, raw silk twisting oil , inorganic impurities are removed cleanly, and the pH is 8 to 9, which is suitable for enzymes. Therefore, if enzymes are added and scoured at this point, the resulting silk will be stably kneaded with the luster and soft texture characteristic of silk. Among the auxiliaries, sodium bicarbonate and sodium carbonate are preferably used in a weight ratio of 1:3 to 3:1, and neutral sodium sulfite is used in a weight ratio of 1:3 to 3:1 with respect to the total amount of sodium bicarbonate and sodium carbonate. It is preferable to use them in a ratio of 10:1 to 3:1, particularly 5:1 to 4:1. If sodium bicarbonate is used alone as a neutralizing agent, enzyme activation will not be sufficient and the enzyme scouring effect cannot be controlled, and conversely, if sodium carbonate is used alone, the pH will exceed 10 and the enzyme will die. , the refinement is still incomplete. Note that even if neutral sodium sulfite is used in an amount greater than 1/3 of the total amount of sodium bicarbonate and sodium carbonate, the effect remains the same and it is wasteful. It is generally sufficient to use the auxiliary agent of the present invention in the following proportions based on the weight of fiber. For raw silk: 5-7% For wild silk silk: 4-6% For raw cloth: 10-15% For silk wool: 2-4% For blended yarn with silk: 2-5% Use temperature: 60-98℃ Preferably, raw silk or the like is immersed in a bath containing the auxiliary agent of the present invention at this temperature in the proportions described above, treated for about 15 to 60 minutes, and then
By adding enzymes and enzymatic scouring at 60°C, uniform scouring can be achieved in a short time. Incidentally, scouring of wild silk thread was thought to be difficult, but the auxiliary agent of the present invention has made enzymatic scouring possible, increasing the demand for wild silk thread. Control of the reduction is also possible through the use of this auxiliary agent. Example An auxiliary agent (A) of the present invention was prepared by blending sodium bicarbonate, sodium carbonate, and neutral sodium sulfite in a weight ratio of 2:2:1. Using this auxiliary agent (A), the following three types of enzymatic scouring were carried out. In both types of scouring, the raw silk is first immersed in a treatment bath containing only the enzyme aid (A) at approximately 60°C for 15 to 30 minutes (bath ratio 1:20 to 30), and then the enzyme and Larsen power are added to this bath. The raw silk was further treated at 50-60℃ for 10-20 minutes, and the raw silk taken out from the treatment bath was
It was carried out by washing in hot water for 10 to 20 minutes at ℃. 3-minute kneading enzyme auxiliary agent (A) 4% (based on fiber weight) Enzyme (*1) 0.3% (based on fiber weight) Larsen power (*2) 1% (based on fiber weight) 5-minute kneading enzyme auxiliary agent (A) 7 % (weight of fiber) Enzyme (*1) 1% (weight of fiber) Larsen power (*2) 1% (weight of fiber) 8-minute kneading enzyme aid (A) 10% (weight of fiber) Enzyme (*1 ) 2% (based on fiber weight) Larsen Power (*2) 1% (based on fiber weight) *(1) Bacterial alkaline protease *(2) Koshindo Chemical Industry Co., Ltd.'s highly degradable scouring detergent (non-ionic surfactant) As a result, as shown in Table 1, for each type of raw silk, it was possible to obtain scouring products of uniform quality with the desired kneading loss rate of 3 minutes, 5 minutes, and 8 minutes. .

【表】【table】

【表】 これに対して、21/4片の生糸を使用して、下記
の如く、本発明の助剤を使用しないで実施した酵
素精練では、いずれも十分な効果が得られなかつ
た。なお、下記比較例に%とあるのは、特に断ら
ない限り、対繊維当たりの重量を示す。 比較例 1 炭酸ナトリウム3%と酵素1%を含む処理浴
で60℃×90分の処理をしたが、PHが10以上とな
り、酵素活性が半減し、精練が不完全となつ
た。 2 1の方法で炭酸ナトリウムの量を増やすと、
生糸は黄変硬化し、毛羽立ちが生じた。 3 メタ珪酸ソーダ3%を含む処理浴で60℃×20
分の前処理を実施し、その後に酵素を添加した
が、この場合メタ珪酸ソーダのアルカリが強す
ぎて酵素が死滅し、精練不完全となつた。 4 重炭酸ナトリウム10%を含む処理浴で60℃×
30分の前処理をし、その後酵素を投入したが、
セリシンが溶解するときにアルカリ不足が生
じ、精練不完全となつた。 5 重炭酸ナトリウム5%と炭酸ナトリウム3%
を含む処理浴で60℃×20分の前処理を実施し、
その後に酵素1%を添加した。80%程度の精練
ができたが、生糸表面の不純物の付着により、
セリシンが溶解されず分解されないまま繊維上
に残り、湯洗い、水洗を実施しても取り切れな
かつた。 発明の効果 本発明の助剤を使用して、生糸を酵素精練する
と、絹繊維特有の風合を害することなく、均一に
精練でき、しかも、使用するタンパク質分解酵素
の量を調整することによつて、所望の練減りの状
態に精練を制御できる。
[Table] On the other hand, when enzyme scouring was carried out using 21/4 pieces of raw silk without using the auxiliary agent of the present invention as described below, no sufficient effect was obtained. In addition, % in the following comparative examples indicates the weight per fiber unless otherwise specified. Comparative Example 1 A treatment was carried out at 60° C. for 90 minutes in a treatment bath containing 3% sodium carbonate and 1% enzyme, but the pH became 10 or more, the enzyme activity was halved, and the scouring was incomplete. 2 If you increase the amount of sodium carbonate using method 1,
The raw silk yellowed, hardened, and became fluffy. 3 60℃×20 in a treatment bath containing 3% sodium metasilicate
Pretreatment was carried out for several minutes, and then an enzyme was added, but in this case, the alkali of sodium metasilicate was too strong and the enzyme was killed, resulting in incomplete scouring. 4 60℃× in a treatment bath containing 10% sodium bicarbonate
I pretreated for 30 minutes and then added the enzyme, but
When sericin dissolved, alkali deficiency occurred, resulting in incomplete scouring. 5 Sodium bicarbonate 5% and sodium carbonate 3%
Perform pretreatment at 60°C for 20 minutes in a treatment bath containing
Then 1% enzyme was added. Approximately 80% of the scouring was achieved, but due to the adhesion of impurities on the surface of the raw silk,
Sericin remained on the fibers without being dissolved or decomposed, and could not be removed even after washing with hot water and water. Effects of the Invention When raw silk is enzymatically scoured using the auxiliary agent of the present invention, uniform scouring can be achieved without impairing the unique texture of silk fibers, and by adjusting the amount of proteolytic enzyme used. Therefore, the scouring can be controlled to a desired state of reduction.

Claims (1)

【特許請求の範囲】[Claims] 1 重炭酸ナトリウム、炭酸ナトリウム及び中性
亜硫酸ナトリウムからなることを特徴とする生糸
の酵素精練用助剤。
1. An auxiliary agent for enzymatic scouring of raw silk characterized by comprising sodium bicarbonate, sodium carbonate, and neutral sodium sulfite.
JP15196189A 1989-06-13 1989-06-13 Assistant for enzymatic degumming of raw silk Granted JPH0319905A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15196189A JPH0319905A (en) 1989-06-13 1989-06-13 Assistant for enzymatic degumming of raw silk

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15196189A JPH0319905A (en) 1989-06-13 1989-06-13 Assistant for enzymatic degumming of raw silk

Publications (2)

Publication Number Publication Date
JPH0319905A JPH0319905A (en) 1991-01-29
JPH0357205B2 true JPH0357205B2 (en) 1991-08-30

Family

ID=15529999

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15196189A Granted JPH0319905A (en) 1989-06-13 1989-06-13 Assistant for enzymatic degumming of raw silk

Country Status (1)

Country Link
JP (1) JPH0319905A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997031147A1 (en) * 1996-02-23 1997-08-28 Kanehisa Inc. Process for producing woven or knitted fabric from yarn-dyed raw silk and woven or knitted fabric thus produced

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102634855B (en) * 2012-04-01 2013-12-11 祝洪哲 Natural nanometer material composition for one-bath degumming and bleaching of fibrilia
EP3064619B1 (en) * 2015-02-27 2020-11-18 COSETEX S.n.c. Method of making a heat-insulating element and heat-insulating element
CN110685020B (en) * 2019-11-11 2020-09-04 南宁雄晋生物科技有限公司 Complex enzyme for degumming and color fixation of natural colored silk and use method thereof

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997031147A1 (en) * 1996-02-23 1997-08-28 Kanehisa Inc. Process for producing woven or knitted fabric from yarn-dyed raw silk and woven or knitted fabric thus produced

Also Published As

Publication number Publication date
JPH0319905A (en) 1991-01-29

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