JP2005187568A - Method for producing high bulk density granular detergent composition - Google Patents

Method for producing high bulk density granular detergent composition Download PDF

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JP2005187568A
JP2005187568A JP2003428891A JP2003428891A JP2005187568A JP 2005187568 A JP2005187568 A JP 2005187568A JP 2003428891 A JP2003428891 A JP 2003428891A JP 2003428891 A JP2003428891 A JP 2003428891A JP 2005187568 A JP2005187568 A JP 2005187568A
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fatty acid
acid alkyl
sulfo fatty
alkyl ester
bulk density
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JP4379586B2 (en
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Madoka Suwa
まどか 諏訪
Yutaka Abe
裕 安部
Akitomo Morita
章友 森田
Kensuke Itakura
健介 板倉
Masahiko Matsubara
雅彦 松原
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Lion Corp
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a method for producing a high bulk density granular detergent composition, wherein production steps can be simplified, and granular detergent compositions excellent in workability, hardly solidified and excellent in flowability can be obtained. <P>SOLUTION: The method for producing a high bulk density granular detergent composition comprises the steps of: (I) mixing (A) α-sulfo fatty acid alkyl esters and (B) alkaline inorganic powders in a stirring granulator or a fluidized bed granulator to neutralize the α-sulfo fatty acid alkyl esters and granulate the α-sulfo fatty acid alkyl esters and neutralized products thereof, obtaining granules containing α-sulfo fatty acid alkyl ester salts; and (II) kneading the granules containing α-sulfo fatty acid alkyl ester salts and detergent components to form dough-like compositions with a temperature of 40-75°C, and grinding the dough into granules. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

本発明は、製造性及び粉体物性に優れた高嵩密度粒状洗剤組成物をノンタワープロセスにて製造する方法に関するものである。   The present invention relates to a method for producing a high bulk density granular detergent composition excellent in manufacturability and powder physical properties by a non-tower process.

捏和粉砕法を用いるα−スルホ脂肪酸アルキルエステル塩含有洗剤組成物の製造方法には、代表的なものとして、α−スルホ脂肪酸アルキルエステル塩と無機粉体を水に溶解させて、水分35〜70質量%程度のスラリーを調製し、これを噴霧乾燥して乾燥粉を得て、他洗剤成分と共に捏和粉砕する方法がある。この場合、乾燥を行うため、使用するエネルギーが非常に大きく、その上大気中に排気ガスを放出することから、環境への負荷が大きい。   As a representative method for producing an α-sulfo fatty acid alkyl ester salt-containing detergent composition using a kneading pulverization method, an α-sulfo fatty acid alkyl ester salt and an inorganic powder are dissolved in water, There is a method in which a slurry of about 70% by mass is prepared, and this is spray-dried to obtain a dry powder, which is kneaded with other detergent components. In this case, since the drying is performed, the energy to be used is very large, and the exhaust gas is released into the atmosphere.

また、噴霧乾燥を用いない方法、すなわちノンタワープロセスのひとつの方法として、水分20〜30質量%のα−スルホ脂肪酸アルキルエステル塩ペースト、あるいはこの濃縮物を、その他洗剤成分と共に混練して捏和物を成形させた後、これを粉砕して粒状物を製造する方法がある。しかし、この方法では、α−スルホ脂肪酸アルキルエステル塩ペーストのハンドリング性を保つために、ペーストを高温・高水分とすることが必要となる。この状態で他洗剤成分と共に捏和すると、高温、高水分のために、捏和物が軟らかくなり、粉砕する際に装置内付着が生じてしまう。さらに、この方法で製造したα−スルホ脂肪酸アルキルエステル塩含有高嵩密度粒状洗剤組成物は、製造直後・貯蔵での粉体物性(流動性、非固化性)劣化が問題となる。この原因としては、α−スルホ脂肪酸アルキルエステル塩に特有である結晶化速度(結晶安定化速度)の遅さが考えられる。また、水分を多く含有したペーストを経由することから、加水分解も問題となる。   Further, as a method not using spray drying, that is, as one method of the non-tower process, an α-sulfo fatty acid alkyl ester salt paste having a water content of 20 to 30% by mass or this concentrate is kneaded together with other detergent components. There is a method in which a product is formed and then pulverized to produce a granular product. However, in this method, in order to maintain the handleability of the α-sulfo fatty acid alkyl ester salt paste, the paste needs to have a high temperature and a high moisture content. When kneading with other detergent components in this state, the kneaded product becomes soft due to high temperature and high moisture, and adhesion in the apparatus occurs when pulverizing. Furthermore, the α-sulfo fatty acid alkyl ester salt-containing high bulk density granular detergent composition produced by this method has a problem of deterioration of powder physical properties (fluidity, non-solidifying property) immediately after production and storage. As a cause of this, a slow crystallization rate (crystal stabilization rate) that is peculiar to α-sulfo fatty acid alkyl ester salts can be considered. Moreover, since it passes through the paste containing much water, hydrolysis also becomes a problem.

α−スルホ脂肪酸アルキルエステル塩含有物の水分低減策として、水分を含有しない、α−スルホ脂肪酸アルキルエステル塩の酸前駆体であるα−スルホ脂肪酸アルキルエステルを用いる方法が考えられる。α−スルホ脂肪酸アルキルエステルとアルカリ無機粉体を直接混合して中和を行う乾式中和法は従来から知られている(例えば特許文献1:特開昭61−87657号公報)。α−スルホ脂肪酸アルキルエステルとアルカリ無機粉体を混練機内で乾式中和することにより、α−スルホ脂肪酸アルキルエステル塩含有粒子及びα−スルホ脂肪酸アルキルエステル塩含有洗剤組成物を製造する方法が提案されている(特許文献2:特開平11−35999号公報)。しかし、この方法では、α−スルホ脂肪酸アルキルエステル塩の酸前駆体を、直接他の洗剤成分と共に混練機に添加すると、混練機内でアルカリ性無機粉体との乾式中和が起こるため、中和熱の著しい発生により、捏和物温度が上昇し、粉砕中に装置内付着が発生してしまう場合がある。この方法においても、得られたα−スルホ脂肪酸アルキルエステル塩含有物は、α−スルホ脂肪酸アルキルエステル塩の結晶化速度の遅さから、製造直後貯蔵での粉体物性(流動性、非固化性)劣化が問題となる。   As a measure for reducing the water content of the α-sulfo fatty acid alkyl ester salt-containing material, a method using an α-sulfo fatty acid alkyl ester which is an acid precursor of the α-sulfo fatty acid alkyl ester salt and does not contain water can be considered. A dry neutralization method in which an α-sulfo fatty acid alkyl ester and an alkali inorganic powder are directly mixed and neutralized is conventionally known (for example, Patent Document 1: Japanese Patent Laid-Open No. 61-87657). A method for producing α-sulfo fatty acid alkyl ester salt-containing particles and α-sulfo fatty acid alkyl ester salt-containing detergent composition by dry neutralization of α-sulfo fatty acid alkyl ester and alkali inorganic powder in a kneader is proposed. (Patent Document 2: JP-A-11-35999). However, in this method, when the acid precursor of the α-sulfo fatty acid alkyl ester salt is directly added to the kneader together with other detergent components, dry neutralization with the alkaline inorganic powder occurs in the kneader. Due to the remarkable generation of the kneaded product, the temperature of the kneaded product rises, and adhesion in the apparatus may occur during pulverization. Also in this method, the obtained α-sulfo fatty acid alkyl ester salt-containing product has a powder physical property (fluidity, non-solidification property) immediately after production because of the slow crystallization rate of the α-sulfo fatty acid alkyl ester salt. ) Deterioration is a problem.

また、α−スルホ脂肪酸アルキルエステル塩の酸前駆体、脂肪酸(塩)及びアルカリ中和剤を混練機内で乾式中和することにより、α−スルホ脂肪酸アルキルエステル塩を含有するペースト又はドウ状物を成形し、これを表面改質剤の存在下で粉砕処理して、α−スルホ脂肪酸アルキルエステル塩含有高嵩密度粒子又はα−スルホ脂肪酸アルキルエステル塩含有高嵩密度粒状洗剤組成物を製造する方法が提案されている(特許文献3:特開平9−241694号公報)。しかし、この方法でも、上述と同様の理由から、粉砕中に装置内付着が発生してしまう。また、製造直後での粉体物性劣化が問題となる。さらに、上記製造方法以外に、α−スルホ脂肪酸アルキルエステル塩の酸前駆体、脂肪酸(塩)及びアルカリ性無機粉体を混練機内で乾式中和して、α−スルホ脂肪酸アルキルエステル塩を含有するドウ状物を成形し、これを表面改質剤の存在下で粉砕処理して得られたα−スルホ脂肪酸アルキルエステル塩含有高嵩密度粒子を、その他の洗剤原料と共に混練して再度ドウ状物を成形し、これを粉砕処理して粒状洗剤組成物にする方法も提案されているが、製造工程が非常に繁雑となってしまう上、α−スルホ脂肪酸アルキルエステル塩含有高嵩密度粒子製造時の粉砕中、装置内で付着する問題が残されている。   In addition, a paste or dough-like material containing an α-sulfo fatty acid alkyl ester salt is obtained by dry-neutralizing an acid precursor of the α-sulfo fatty acid alkyl ester salt, a fatty acid (salt) and an alkali neutralizer in a kneader. A method for producing an α-sulfo fatty acid alkyl ester salt-containing high bulk density particle or an α-sulfo fatty acid alkyl ester salt-containing high bulk density granular detergent composition by molding and pulverizing it in the presence of a surface modifier Has been proposed (Patent Document 3: JP-A-9-241694). However, even in this method, adhesion in the apparatus occurs during pulverization for the same reason as described above. Moreover, powder physical property deterioration immediately after manufacture becomes a problem. Further, in addition to the above production method, an acid precursor of an α-sulfo fatty acid alkyl ester salt, a fatty acid (salt) and an alkaline inorganic powder are dry-neutralized in a kneader to contain a dough containing an α-sulfo fatty acid alkyl ester salt. The high bulk density particles containing α-sulfo fatty acid alkyl ester salt obtained by molding the product and pulverizing it in the presence of a surface modifier are kneaded with other detergent raw materials to form a dough again. A method of forming and pulverizing this into a granular detergent composition has also been proposed, but the production process becomes very complicated, and α-sulfo fatty acid alkyl ester salt-containing high bulk density particles are produced. There remains a problem of sticking in the apparatus during grinding.

その他、α−スルホ脂肪酸アルキルエステル塩ペーストを水分15%以下に濃縮し、冷却固化させ、これを粉砕して得られた粒子を洗剤成分と共に捏和粉砕を行うことも提案されているが(特開平10−195497号公報)、この場合も製造工程が複雑となる。   In addition, it has also been proposed that the α-sulfo fatty acid alkyl ester salt paste is concentrated to a moisture content of 15% or less, cooled and solidified, and the resulting particles are pulverized together with detergent components. (Kaihei 10-195497), the manufacturing process is also complicated in this case.

以上のように、ノンタワープロセスでα−スルホ脂肪酸アルキルエステル塩含有の高嵩密度洗剤組成物を製造する際の問題点として、製造性の不良や製造工程の複雑化、及び製造した洗剤組成物の粉体物性(流動性、非固化性)劣化があり、これらの改善が望まれていた。
特開昭61−87657号公報 特開平11−35999号公報 特開平9−241694号公報 特開平10−195497号公報 特開2001−64248号公報
As described above, as a problem in producing a high bulk density detergent composition containing an α-sulfo fatty acid alkyl ester salt by a non-tower process, the productivity is poor, the production process is complicated, and the produced detergent composition The powder physical properties (fluidity, non-solidification) were deteriorated, and these improvements were desired.
JP-A-61-87657 JP 11-35999 A JP-A-9-241694 Japanese Patent Laid-Open No. 10-195497 JP 2001-64248 A

本発明は上記事情に鑑みなされたもので、製造工程の簡略化が図れかつ製造性に優れ、固化しにくく流動性に優れた粒状洗剤を得ることができる、高嵩密度粒状洗剤組成物の製造方法を提供することを目的とする。   The present invention has been made in view of the above circumstances, and can produce a granular detergent composition capable of simplifying the production process and excellent in manufacturability, hard to solidify and excellent in fluidity, and capable of obtaining a granular detergent. It aims to provide a method.

本発明者は、上記目的を達成するため鋭意検討した結果、下記を知見し、本発明をなすに至ったものである。
α−スルホ脂肪酸アルキルエステルとアルカリ性無機粉体を、撹拌造粒装置又は流動層造粒装置内で顆粒状態を維持したまま混合、乾式中和及び造粒してα−スルホ脂肪酸アルキルエステル塩含有粒子を得て、得られたα−スルホ脂肪酸アルキルエステル塩含有粒子を他の洗剤成分と捏和・混練する。このようなα−スルホ脂肪酸アルキルエステル塩含有粒子を用いることにより、低水分・低温の粒子が投入可能となり、捏和物温度の上昇が起きず、粉砕する際の装置内付着がほとんどない、良好な製造性を有するα−スルホ脂肪酸アルキルエステル塩含有高嵩密度粒状洗剤の製造が可能となるものである。
As a result of intensive studies to achieve the above object, the present inventor has found the following and has come to make the present invention.
α-sulfo fatty acid alkyl ester salt-containing particles obtained by mixing α-sulfo fatty acid alkyl ester and alkaline inorganic powder in a stirring granulator or fluidized bed granulator while maintaining the granular state, dry neutralization and granulation The α-sulfo fatty acid alkyl ester salt-containing particles obtained are kneaded and kneaded with other detergent components. By using such α-sulfo fatty acid alkyl ester salt-containing particles, low-moisture and low-temperature particles can be introduced, the kneaded product temperature does not increase, and there is almost no adhesion in the apparatus during grinding. It is possible to produce an α-sulfo fatty acid alkyl ester salt-containing high bulk density granular detergent having excellent manufacturability.

また、洗剤組成物の粉体物性(流動性、非固化性)劣化という問題点について、原因としては、α−スルホ脂肪酸アルキルエステル塩に特有である結晶化速度(結晶安定化速度)の遅さが挙げられる。他の洗剤成分との捏和・混練に、α−スルホ脂肪酸アルキルエステル塩含有粒子を用いる場合は、α−スルホ脂肪酸アルキルエステル塩を固体の結晶状態の安定した状態で捏和・混練機に投入するため、捏和・混練時に溶融しなかったα−スルホ脂肪酸アルキルエステル塩は、安定状態を保つと考えられる。よって、α−スルホ脂肪酸アルキルエステル塩ペーストや、α−スルホ脂肪酸アルキルエステル塩の酸前駆体といった液状で捏和・混練する場合と比較して、製造直後における高嵩密度粒状洗剤組成物中のα−スルホ脂肪酸アルキルエステル塩の結晶安定性は良く、粉体物性(流動性、非固化性)の劣化を防ぐことが可能となる。   In addition, regarding the problem of deterioration of powder physical properties (fluidity, non-solidification property) of the detergent composition, the cause is a slow crystallization rate (crystal stabilization rate) peculiar to α-sulfo fatty acid alkyl ester salts. Is mentioned. When α-sulfo fatty acid alkyl ester salt-containing particles are used for kneading and kneading with other detergent components, the α-sulfo fatty acid alkyl ester salt is charged into the kneading and kneading machine in a stable solid crystalline state. Therefore, the α-sulfo fatty acid alkyl ester salt that has not melted during kneading and kneading is considered to maintain a stable state. Therefore, compared with the case of kneading and kneading in liquid such as α-sulfo fatty acid alkyl ester salt paste and acid precursor of α-sulfo fatty acid alkyl ester salt, α in the high bulk density granular detergent composition immediately after production -The crystal stability of the sulfo fatty acid alkyl ester salt is good, and it becomes possible to prevent the deterioration of powder physical properties (fluidity, non-solidifying property).

従って、本発明は下記(I)及び(II)工程を含む高嵩密度粒状洗剤組成物の製造方法を提供する。
(I).(A)α−スルホ脂肪酸アルキルエステルと(B)アルカリ性無機粉体とを、撹拌造粒装置又は流動層造粒装置内で混合し、α−スルホ脂肪酸アルキルエステルの中和とα−スルホ脂肪酸アルキルエステル及びその中和物の造粒とを行い、α−スルホ脂肪酸アルキルエステル塩含有粒子を得る工程。
(II).上記α−スルホ脂肪酸アルキルエステル塩含有粒子と洗剤成分とを捏和・混練し、温度40〜75℃のドウ状組成物を成形させ、これを粉砕して顆粒とする工程。
Accordingly, the present invention provides a method for producing a high bulk density granular detergent composition comprising the following steps (I) and (II).
(I). (A) α-sulfo fatty acid alkyl ester and (B) alkaline inorganic powder are mixed in a stirring granulator or a fluidized bed granulator to neutralize α-sulfo fatty acid alkyl ester and α-sulfo fatty acid alkyl. A step of granulating an ester and a neutralized product thereof to obtain α-sulfo fatty acid alkyl ester salt-containing particles.
(II). A step of kneading and kneading the α-sulfo fatty acid alkyl ester salt-containing particles and the detergent component to form a dough-like composition at a temperature of 40 to 75 ° C., and pulverizing it into granules.

本発明によれば、製造工程の簡略化が図れかつ製造性に優れ、固化しにくく流動性に優れた粒状洗剤組成物が得られる、高嵩密度粒状洗剤組成物の製造方法を提供することができる。   According to the present invention, it is possible to provide a method for producing a high-bulk-density granular detergent composition, which can simplify the production process and is excellent in manufacturability, and is capable of obtaining a granular detergent composition that is hard to solidify and excellent in fluidity. it can.

以下、本発明につき、さらに詳しく説明する。
本発明の高嵩密度粒状洗剤組成物の製造方法は、下記(I)及び(II)工程を含むものである。
(I).(A)α−スルホ脂肪酸アルキルエステルと(B)アルカリ性無機粉体とを、撹拌造粒装置又は流動層造粒装置内で混合し、α−スルホ脂肪酸アルキルエステルの中和とα−スルホ脂肪酸アルキルエステル及びその中和物の造粒とを行い、α−スルホ脂肪酸アルキルエステル塩含有粒子を得る工程。
(II).上記α−スルホ脂肪酸アルキルエステル塩含有粒子と洗剤成分とを捏和・混練し、温度40〜75℃のドウ状組成物を成形させ、これを粉砕して顆粒とする工程。
Hereinafter, the present invention will be described in more detail.
The method for producing a high bulk density granular detergent composition of the present invention includes the following steps (I) and (II).
(I). (A) α-sulfo fatty acid alkyl ester and (B) alkaline inorganic powder are mixed in a stirring granulator or a fluidized bed granulator to neutralize α-sulfo fatty acid alkyl ester and α-sulfo fatty acid alkyl. A step of granulating an ester and a neutralized product thereof to obtain α-sulfo fatty acid alkyl ester salt-containing particles.
(II). A step of kneading and kneading the α-sulfo fatty acid alkyl ester salt-containing particles and the detergent component to form a dough-like composition at a temperature of 40 to 75 ° C., and pulverizing it into granules.

(I).(A)α−スルホ脂肪酸アルキルエステルと(B)アルカリ性無機粉体とを、撹拌造粒装置又は流動層造粒装置内で混合し、α−スルホ脂肪酸アルキルエステルの中和とα−スルホ脂肪酸アルキルエステル及びその中和物の造粒とを行い、α−スルホ脂肪酸アルキルエステル塩含有粒子を得る工程。   (I). (A) α-sulfo fatty acid alkyl ester and (B) alkaline inorganic powder are mixed in a stirring granulator or a fluidized bed granulator to neutralize α-sulfo fatty acid alkyl ester and α-sulfo fatty acid alkyl. A step of granulating an ester and a neutralized product thereof to obtain α-sulfo fatty acid alkyl ester salt-containing particles.

α−スルホ脂肪酸アルキルエステルは酸前駆体であり、後述するアルカリ性無機粉体と混合することにより、中和物のα−スルホ脂肪酸アルキルエステル塩に中和されるものである。α−スルホ脂肪酸アルキルエステル及びα−スルホ脂肪酸アルキルエステル塩をそれぞれ下記式(1),(2)で示す。   The α-sulfo fatty acid alkyl ester is an acid precursor, and is neutralized to the neutralized α-sulfo fatty acid alkyl ester salt by mixing with an alkaline inorganic powder described later. The α-sulfo fatty acid alkyl ester and the α-sulfo fatty acid alkyl ester salt are represented by the following formulas (1) and (2), respectively.

Figure 2005187568
(式中、R1は炭素数6〜24、特に10〜20の飽和又は不飽和の1価炭化水素基、R2は炭素数1〜6の直鎖又は分岐鎖アルキル基であり、好ましくは、メチル基、エチル基、又はプロピル基を示す。Mはアルカリ金属原子を示す。)
Figure 2005187568
(Wherein R 1 is a saturated or unsaturated monovalent hydrocarbon group having 6 to 24 carbon atoms, particularly 10 to 20 carbon atoms, and R 2 is a linear or branched alkyl group having 1 to 6 carbon atoms, preferably And represents a methyl group, an ethyl group, or a propyl group, and M represents an alkali metal atom.)

本発明のα−スルホ脂肪酸アルキルエステルは、常法や、特開2001−64248号公報に記載の方法に準じて得ることができ、特に、着色抑制剤存在下で脂肪酸アルキルエステルとスルホン化ガスを接触させてスルホン化し、得られたスルホン化物を低級アルコールによってエステル化させてなるα−スルホ脂肪酸アルキルエステルであることが好ましい。着色防止剤としては、硫酸ナトリウム、硫酸カリウムが好ましく、低級アルコールとしては、メタノール、エタノール、又はそれらの混合物を用いることが好ましい。この方法で製造されたα−スルホ脂肪酸アルキルエステルを用いることで、色調が良好なα−スルホ脂肪酸アルキルエステル塩含有粒子を得ることができる。   The α-sulfo fatty acid alkyl ester of the present invention can be obtained according to a conventional method or a method described in JP-A-2001-64248, and in particular, a fatty acid alkyl ester and a sulfonated gas in the presence of a coloring inhibitor. It is preferably an α-sulfo fatty acid alkyl ester obtained by sulfonation by contact and esterifying the resulting sulfonated product with a lower alcohol. As the anti-coloring agent, sodium sulfate and potassium sulfate are preferable, and as the lower alcohol, it is preferable to use methanol, ethanol, or a mixture thereof. By using the α-sulfo fatty acid alkyl ester produced by this method, α-sulfo fatty acid alkyl ester salt-containing particles having a good color tone can be obtained.

アルカリ性無機粉体としては、特に限定されるものではないが、アルカリ金属炭酸塩、アルカリ金属珪酸塩、アルカリ金属燐酸塩等が挙げられ、1種単独で又は2種以上を適宜組み合わせて用いることができる。アルカリ金属炭酸塩としては、炭酸ナトリウム、炭酸カリウム、炭酸水素ナトリウム、炭酸水素カリウム、炭酸ナトリウム・カリウム等が挙げられる。アルカリ金属珪酸塩としては、珪酸ナトリウム、層状珪酸ナトリウム等が挙げられる。アルカリ金属燐酸塩としては、トリポリ燐酸ナトリウム、ピロ燐酸ナトリウム等が挙げられる。これらの中で、アルカリ金属炭酸塩が好ましく、その中でも特に炭酸ナトリウム、炭酸カリウム、炭酸ナトリウム・カリウムが好ましい。   Although it does not specifically limit as alkaline inorganic powder, An alkali metal carbonate, an alkali metal silicate, an alkali metal phosphate, etc. are mentioned, It is used individually by 1 type or in combination of 2 or more types as appropriate. it can. Examples of the alkali metal carbonate include sodium carbonate, potassium carbonate, sodium hydrogen carbonate, potassium hydrogen carbonate, sodium carbonate / potassium carbonate and the like. Examples of the alkali metal silicate include sodium silicate and layered sodium silicate. Examples of the alkali metal phosphate include sodium tripolyphosphate and sodium pyrophosphate. Among these, alkali metal carbonates are preferable, and sodium carbonate, potassium carbonate, and sodium carbonate / potassium are particularly preferable.

アルカリ性無機粉体の平均粒径は、0.2〜500μmが好ましく、より好ましくは0.2〜300μm、さらに好ましくは0.2〜150μmである。粒子径を小さくし、アルカリ性無機粉体の表面積を大きくすることで、α−スルホ脂肪酸アルキルエステルの中和を促進し、中和と同時に造粒を行うことが可能となる。アルカリ性無機粉体としては、ナトリウム塩とカリウム塩を97/3〜10/90(モル比)、好ましくは97/3〜50/50の割合で含むことが好ましい。一部カリウム塩を用いることで、α−スルホ脂肪酸アルキルエステルが乾式中和でナトリウム塩よりも融点の高いカリウム塩になるため結晶性が増す。これにより本発明の製造方法で得られる高嵩密度粒状洗剤組成物の粉体物性(流動性、非固化性)の劣化を改善することができる。カリウム塩の含有量が3モル%未満であると、上記効果が出にくく、90モル%以上になると、発塵の問題が出てくる場合がある。   The average particle size of the alkaline inorganic powder is preferably 0.2 to 500 μm, more preferably 0.2 to 300 μm, and still more preferably 0.2 to 150 μm. By reducing the particle size and increasing the surface area of the alkaline inorganic powder, neutralization of the α-sulfo fatty acid alkyl ester can be promoted and granulation can be performed simultaneously with the neutralization. The alkaline inorganic powder preferably contains sodium salt and potassium salt in a ratio of 97/3 to 10/90 (molar ratio), preferably 97/3 to 50/50. By using a partial potassium salt, the α-sulfo fatty acid alkyl ester becomes a potassium salt having a melting point higher than that of the sodium salt by dry neutralization, so that the crystallinity is increased. Thereby, deterioration of the powder physical properties (fluidity, non-solidifying property) of the high bulk density granular detergent composition obtained by the production method of the present invention can be improved. When the content of the potassium salt is less than 3 mol%, the above effect is hardly exhibited, and when it is 90 mol% or more, a problem of dust generation may occur.

(A)α−スルホ脂肪酸アルキルエステルと、(B)アルカリ性無機粉体とのモル比((A):(B))は、1:0.85〜1:20が好ましく、より好ましくは1:1.2〜1:18、さらに好ましくは1:1.5〜1:13である。1:0.85未満であると、中和を促進し反応時に発生する炭酸ガスの脱泡が円滑に行われない場合がある。また、中和時に顆粒状が維持できず中和と造粒が同時に行えない場合がある。一方、1:20を超えるとアルカリ性無機粉体が過剰となり、造粒が行えない場合がある。   The molar ratio ((A) :( B)) of (A) α-sulfo fatty acid alkyl ester and (B) alkaline inorganic powder is preferably 1: 0.85 to 1:20, more preferably 1: 1.2 to 1:18, more preferably 1: 1.5 to 1:13. If it is less than 1: 0.85, neutralization is promoted and carbon dioxide gas generated during the reaction may not be smoothly degassed. Moreover, the granular form cannot be maintained during neutralization, and neutralization and granulation may not be performed at the same time. On the other hand, when it exceeds 1:20, the alkaline inorganic powder becomes excessive and granulation may not be performed.

本発明においては、(A)α−スルホ脂肪酸アルキルエステルと(B)アルカリ性無機粉体とを、撹拌造粒装置又は流動層造粒装置内で混合し、α−スルホ脂肪酸アルキルエステルの中和と、α−スルホ脂肪酸アルキルエステル及びその中和物(α−スルホ脂肪酸アルキルエステル塩)の造粒とを平行して同時に行うものである。   In the present invention, (A) α-sulfo fatty acid alkyl ester and (B) alkaline inorganic powder are mixed in a stirring granulator or a fluidized bed granulator to neutralize α-sulfo fatty acid alkyl ester. The granulation of the α-sulfo fatty acid alkyl ester and the neutralized product thereof (α-sulfo fatty acid alkyl ester salt) is simultaneously performed in parallel.

撹拌造粒装置は、撹拌羽根を備え、撹拌軸を内部の中心に有する構造をとる装置であり、例としては、ヘンシェルミキサー[三井三池化工機(株)製]、ハイスピードミキサー[深江工業(株)製]、バーチカルグラニュレーター[(株)パウレック製]、レディゲミキサー[(株)マツボー製]、プロシェアミキサー[太平洋機工(株)]が挙げられる。流動層造粒装置は、気流発生装置を備え、該気流により粉体を流動化させる装置であり、例としては、Glatt−POWREXシリーズ[(株)パウレックス製]、MIXGRADシリーズ[(株)大川原製作所製]等が挙げられる。   The stirring granulator is a device having a structure having a stirring blade and having a stirring shaft in the center. Examples thereof include a Henschel mixer [Mitsui Miike Chemical Co., Ltd.], a high speed mixer [Fukae Kogyo ( Co., Ltd.], vertical granulator [manufactured by Powrec Co., Ltd.], Redige mixer [manufactured by Matsubo Co., Ltd.], and pro-shear mixer [Pacific Kiko Co., Ltd.]. The fluidized bed granulator is an apparatus that includes an airflow generator and fluidizes powder using the airflow. Examples thereof include Glatt-POWREX series [manufactured by Paulex Corporation], MIXGRAD series [Okawara Corporation]. Manufactured by Mfg. Co., Ltd.].

α−スルホ脂肪酸アルキルエステルとアルカリ性無機粉体とを混合・中和する条件は、特に限定されないが、一般的な混合方法として、撹拌造粒装置又は流動層造粒装置内にアルカリ性無機粉体を含む原料粉体を投入し、その後α−スルホ脂肪酸アルキルエステルを添加する方法が挙げられる。添加時のα−スルホ脂肪酸アルキルエステルの温度は30〜90℃が好ましい。α−スルホ脂肪酸アルキルエステルの添加は、噴霧又は滴下で行うことが好ましい。添加時の粉体の流動化状態は限定されない。混合時の造粒温度が、発生する中和熱により上昇するため、除熱機構のない装置では、100℃を超えることがあるが冷却すればよい。   The conditions for mixing and neutralizing the α-sulfo fatty acid alkyl ester and the alkaline inorganic powder are not particularly limited, but as a general mixing method, the alkaline inorganic powder is placed in a stirring granulator or a fluidized bed granulator. The raw material powder containing is thrown in, and the method of adding (alpha) -sulfo fatty-acid alkylester after that is mentioned. The temperature of the α-sulfo fatty acid alkyl ester during addition is preferably 30 to 90 ° C. The α-sulfo fatty acid alkyl ester is preferably added by spraying or dropping. The fluidized state of the powder at the time of addition is not limited. Since the granulation temperature at the time of mixing rises due to the generated heat of neutralization, in an apparatus without a heat removal mechanism, it may exceed 100 ° C., but it may be cooled.

α−スルホ脂肪酸アルキルエステルとアルカリ性無機粉体との混合・中和及び造粒を、撹拌造粒機で行う場合を説明する。まず、撹拌造粒機内にアルカリ性無機粉体を含む粉体を投入する。粉体を静置させた状態でα−スルホ脂肪酸アルキルエステルを滴下する。滴下終了後、撹拌羽根及びチョッパーを各々50〜300rpm、1000〜6000rpmで30秒間駆動させる。滴下・撹拌の操作を数回繰り返し行って、造粒物(α−スルホ脂肪酸アルキルエステル塩含有粒子)を得る。この時、撹拌造粒機のジャケット温度は5〜75℃とするのがよい。得られた造粒物(α−スルホ脂肪酸アルキルエステル塩含有粒子)の温度が高い場合には、冷却工程を設けることが好ましい。   The case where mixing, neutralization, and granulation of the α-sulfo fatty acid alkyl ester and the alkaline inorganic powder are performed with a stirring granulator will be described. First, a powder containing an alkaline inorganic powder is put into a stirring granulator. The α-sulfo fatty acid alkyl ester is dropped while the powder is allowed to stand. After completion of dropping, the stirring blade and the chopper are driven at 50 to 300 rpm and 1000 to 6000 rpm, respectively, for 30 seconds. The operation of dropping and stirring is repeated several times to obtain a granulated product (α-sulfo fatty acid alkyl ester salt-containing particles). At this time, the jacket temperature of the stirring granulator is preferably 5 to 75 ° C. When the temperature of the obtained granulated product (α-sulfo fatty acid alkyl ester salt-containing particles) is high, it is preferable to provide a cooling step.

α−スルホ脂肪酸アルキルエステルとアルカリ性無機粉体との混合・中和及び造粒を、流動層造粒装置内で行う場合を説明する。まず、流動層内にアルカリ性無機粉体を含む粉体を投入する。この時、静置時の粉体層の平均厚さは50〜500mm程度が好ましい。その後、流動層に風を送り、粉体を流動化させた後にα−スルホ脂肪酸アルキルエステルの噴霧を開始する。α−スルホ脂肪酸アルキルエステルの噴霧は微粒化を良好にするため、2流体ノズルを用いることが好ましい。この時の平均液滴径は5〜500μm程度が好ましい。噴霧が進むにつれて造粒も進み、粒子径が大きくなる。流動化状態を維持するため風速を調整しながら造粒を行う。風速は0.2〜4.0m/sの範囲で調整を行い、風温度は5〜70℃、好ましくは7〜65℃で行う。バグフィルターに付着した微粒子は定期的にパルスエアーで落としながら製造を行うことが好ましい。   The case where mixing, neutralization, and granulation of α-sulfo fatty acid alkyl ester and alkaline inorganic powder are performed in a fluidized bed granulator will be described. First, powder containing alkaline inorganic powder is introduced into the fluidized bed. At this time, the average thickness of the powder layer upon standing is preferably about 50 to 500 mm. Thereafter, air is sent to the fluidized bed to fluidize the powder, and then spraying of the α-sulfo fatty acid alkyl ester is started. In order to atomize the α-sulfo fatty acid alkyl ester to improve atomization, it is preferable to use a two-fluid nozzle. The average droplet diameter at this time is preferably about 5 to 500 μm. As spraying progresses, granulation progresses and the particle size increases. Granulation is performed while adjusting the wind speed to maintain the fluidized state. The wind speed is adjusted in the range of 0.2 to 4.0 m / s, and the wind temperature is 5 to 70 ° C, preferably 7 to 65 ° C. The fine particles adhering to the bag filter are preferably produced while being periodically dropped with pulsed air.

中和を促進させるため、α−スルホ脂肪酸アルキルエステル噴霧終了後に水分を含有した液体を少量添加してもよい。液体は、水又は水溶性アルカリ金属を溶解させたアルカリ性水溶液が好ましい。得られたα−スルホ脂肪酸アルキルエステル塩含有粒子の粒子温度が高い場合には、風を冷風に切り替えることで冷却することが好ましい。   In order to promote neutralization, a small amount of water-containing liquid may be added after spraying the α-sulfo fatty acid alkyl ester. The liquid is preferably water or an alkaline aqueous solution in which a water-soluble alkali metal is dissolved. When the particle temperature of the obtained α-sulfo fatty acid alkyl ester salt-containing particles is high, it is preferable to cool by switching the wind to cold air.

さらに、必要により、α−スルホ脂肪酸アルキルエステル塩含有粒子の貯蔵時の粉体物性(流動性、非固化性)の劣化を防ぐ点から、α−スルホ脂肪酸アルキルエステルとアルカリ性無機粉体とを混合した粉体を調製した後、該混合粉体を、気流発生装置を具備した装置内で流動化させながら熟成させる工程を設けることが好ましい。   Furthermore, if necessary, α-sulfo fatty acid alkyl ester and alkaline inorganic powder are mixed from the viewpoint of preventing deterioration of powder physical properties (fluidity, non-solidification) during storage of α-sulfo fatty acid alkyl ester salt-containing particles. After the prepared powder is prepared, it is preferable to provide a step of aging the mixed powder while fluidizing it in an apparatus equipped with an airflow generator.

ここで、熟成とは所定温度で所定時間保持することをいう。これは得られた混合・中和及び造粒物を流動化させながら行うことが好ましい。熟成温度は、5〜130℃、特に10〜120℃が好ましく、5℃未満では中和・結晶化が進行しない場合があり、130℃を超えると物性の劣化により流動化しない場合がある。流動化時間は30秒以上、特に60秒以上、さらに120秒以上、最も好ましくは300秒以上である。流動化時間が30秒未満では、中和、結晶化が充分ではなく、貯蔵中に粉体物性が劣化する場合がある。熟成時間の上限は特に制限されないが、通常、1時間程度である。   Here, aging means holding at a predetermined temperature for a predetermined time. This is preferably carried out while fluidizing the obtained mixing / neutralization and granulation. The aging temperature is preferably 5 to 130 ° C., particularly preferably 10 to 120 ° C. If the temperature is less than 5 ° C., neutralization / crystallization may not proceed, and if it exceeds 130 ° C., fluidization may not occur due to deterioration of physical properties. The fluidization time is 30 seconds or more, particularly 60 seconds or more, further 120 seconds or more, and most preferably 300 seconds or more. If the fluidization time is less than 30 seconds, neutralization and crystallization are not sufficient, and powder physical properties may deteriorate during storage. The upper limit of the aging time is not particularly limited, but is usually about 1 hour.

熟成工程に用いる装置としては、気流発生装置を具備した装置が好ましく、この装置としては気流が導入可能であり、粒子を流動化させることが可能な装置であれば特に限定されない。気流に用いる気体としては、空気が挙げられる。熟成工程に用いる装置としては、好ましくは流動層、気流導入が可能な撹拌造粒装置が挙げられる。なお、混合・中和及び造粒工程及び熟成工程を同一装置中で行うことも可能である。この場合、混合・中和工程及び造粒工程と熟成工程を、α−スルホ脂肪酸アルキルエステル噴霧終了後も風を送り続け、流動化状態を維持する。   The apparatus used for the aging step is preferably an apparatus equipped with an airflow generator, and is not particularly limited as long as the apparatus can introduce an airflow and can fluidize particles. Air is mentioned as a gas used for airflow. The apparatus used for the aging step is preferably a fluidized bed or an agitation granulator capable of introducing an air stream. It is also possible to perform the mixing / neutralization and granulation step and the aging step in the same apparatus. In this case, the mixing / neutralization step, the granulation step, and the aging step are continued to send air even after the α-sulfo fatty acid alkyl ester spraying is finished, and the fluidized state is maintained.

さらに、本発明の製造方法には、過酸化水素又は過酸化水素を発生させる化合物により、α−スルホ脂肪酸アルキルエステル及び/又はα−スルホ脂肪酸アルキルエステル塩を漂白する工程を含むことが好ましい。この工程は、α−スルホ脂肪酸アルキルエステルとアルカリ性無機粉体とを、混合・中和及び造粒する工程や、得られた混合・中和及び造粒粉体を熟成する工程と同時に行ってもよく、混合・中和及び造粒工程前、混合・中和及び造粒工程後、熟成工程前、熟成工程後のいずれに行ってもよい。過酸化水素水溶液等の漂白剤を添加することで、漂白と中和促進を同時に行うこともできる。   Furthermore, the production method of the present invention preferably includes a step of bleaching the α-sulfo fatty acid alkyl ester and / or the α-sulfo fatty acid alkyl ester salt with hydrogen peroxide or a compound that generates hydrogen peroxide. This step may be performed simultaneously with the step of mixing, neutralizing and granulating the α-sulfo fatty acid alkyl ester and the alkaline inorganic powder, and the step of aging the obtained mixed / neutralized and granulated powder. It may be performed before the mixing / neutralization and granulation step, after the mixing / neutralization and granulation step, before the aging step, and after the aging step. By adding a bleaching agent such as an aqueous hydrogen peroxide solution, bleaching and neutralization can be promoted simultaneously.

過酸化水素又は過酸化水素を発生させる化合物は特に限定されず、1種単独で又は2種以上を適宜組み合わせて用いることができる。この化合物としては、過酸化水素水溶液、過炭酸ナトリウム、過炭酸カリウムが好ましく、特にコスト及び効果の点で、過酸化水素水溶液がより好ましく、さらに、安定性及び安全性の面より、35〜50%(質量%、以下同じ)水溶液が好ましい。   Hydrogen peroxide or a compound that generates hydrogen peroxide is not particularly limited, and can be used singly or in appropriate combination of two or more. This compound is preferably an aqueous hydrogen peroxide solution, sodium percarbonate, or potassium percarbonate, more preferably an aqueous hydrogen peroxide solution from the viewpoint of cost and effect, and from the viewpoint of stability and safety, 35-50. % (Mass%, hereinafter the same) aqueous solution is preferable.

過酸化水素の配合量はα−スルホ脂肪酸アルキルエステル配合量に対し0.1〜10%が好ましく、特に0.2〜9%、さらに0.3〜8%が好ましい。0.1%未満では充分な漂白、消臭効果が得られない場合がある。一方、10%を超えると過酸化水素とともに同伴される水も多くなるため、低水分のα−スルホ脂肪酸アルキルエステル塩含有粒子とならない場合がある。   The blending amount of hydrogen peroxide is preferably 0.1 to 10%, particularly 0.2 to 9%, more preferably 0.3 to 8%, based on the blending amount of the α-sulfo fatty acid alkyl ester. If it is less than 0.1%, sufficient bleaching and deodorizing effects may not be obtained. On the other hand, if it exceeds 10%, the amount of water entrained with hydrogen peroxide increases, so that the particles containing α-sulfo fatty acid alkyl ester salt with low moisture content may not be obtained.

さらに、混合・中和及び造粒工程後、あるいは熟成工程後の粒子を表面改質剤でコーティングする工程を含むことにより、良好な流動性、非固化性を得ることができる。表面改質剤としては、ゼオライト、酸化珪素、粘度鉱物、金属石鹸、無機硫酸塩が好ましい。特に好ましくは、キレート剤としても寄与するゼオライトである。コーティングは混合・中和及び造粒工程又は熟成を行った装置で行うことも可能であるが、水平円筒回転ドラム等の別の装置で行なってもよい。ここでは、過酸化水素水溶液、色素及びその他成分を添加することもできる。   Furthermore, by including the step of coating the particles after the mixing / neutralization and granulation step or after the aging step with a surface modifier, good fluidity and non-solidifying property can be obtained. As the surface modifier, zeolite, silicon oxide, viscous mineral, metal soap, and inorganic sulfate are preferable. Particularly preferred are zeolites that also contribute as chelating agents. The coating can be performed by a mixing / neutralizing and granulating process or an aging apparatus, but may be performed by another apparatus such as a horizontal cylindrical rotating drum. Here, an aqueous hydrogen peroxide solution, a pigment and other components can be added.

表面改質剤の添加量は混合・中和及び造粒工程後又は熟成工程後の粒子中0〜30%が好ましく、より1〜20%、2〜10%、3〜8%が好ましく、特に4〜6%が好ましい。   The addition amount of the surface modifier is preferably 0 to 30%, more preferably 1 to 20%, 2 to 10%, and 3 to 8% in the particles after the mixing / neutralization and granulation step or after the aging step. 4 to 6% is preferable.

本発明の第(I)工程で得られるα−スルホ脂肪酸アルキルエステル塩含有粒子中のα−スルホ脂肪酸アルキルエステル塩の含有量は、5〜75%が好ましく、特に10〜65%が好ましく、さらに好ましくは、15〜55%である。75%を超えると、完全に中和を完了させることが困難になる場合があり、5%未満では、低温・低水分のα−スルホ脂肪酸アルキルエステル塩含有粒子を用いることによる効果が発揮されない場合がある。なお、後述する洗剤に配合される洗剤成分、及びその他の成分を配合することもできる。   The content of the α-sulfo fatty acid alkyl ester salt in the α-sulfo fatty acid alkyl ester salt-containing particles obtained in the step (I) of the present invention is preferably 5 to 75%, particularly preferably 10 to 65%, Preferably, it is 15 to 55%. If it exceeds 75%, it may be difficult to complete neutralization completely. If it is less than 5%, the effect of using low-temperature, low-moisture α-sulfo fatty acid alkyl ester salt-containing particles is not exhibited. There is. In addition, the detergent component mix | blended with the detergent mentioned later and another component can also be mix | blended.

得られた粒子の発塵が問題となる場合、ノニオン性界面活性剤等を少量噴霧することが好ましい。これにより発塵の原因となる微粉の飛散を防ぐため発塵を抑制できる。   When dusting of the obtained particles becomes a problem, it is preferable to spray a small amount of nonionic surfactant or the like. Thereby, in order to prevent scattering of the fine powder which causes dust generation, dust generation can be suppressed.

本発明の製造方法により得られたα−スルホ脂肪酸アルキルエステル塩含有粒子の平均粒径は100〜900μmが好ましい。特に好ましくは120〜800μmである。嵩密度は一般的に0.2〜1.4g/cm3であり、0.3〜1.2g/cm3が好ましく、特に0.3〜1.0g/cm3が好ましい。なお、平均粒径及び嵩密度は実施例記載の測定方法による。 The average particle diameter of the α-sulfo fatty acid alkyl ester salt-containing particles obtained by the production method of the present invention is preferably 100 to 900 μm. Especially preferably, it is 120-800 micrometers. The bulk density is generally 0.2~1.4g / cm 3, preferably 0.3~1.2g / cm 3, in particular 0.3 to 1.0 g / cm 3 preferred. In addition, an average particle diameter and a bulk density are based on the measuring method as described in an Example.

本発明の第(II)工程は、上記α−スルホ脂肪酸アルキルエステル塩含有粒子と洗剤成分とを捏和・混練して、温度40〜75℃のドウ状組成物を成形させ、これを粉砕して顆粒とする工程である。   In the step (II) of the present invention, the α-sulfo fatty acid alkyl ester salt-containing particles and the detergent component are kneaded and kneaded to form a dough-like composition at a temperature of 40 to 75 ° C., and then pulverized. This is a process of making granules.

洗剤成分とは、洗浄成分、漂白成分、製造性、粉体物性を向上させる成分を含むものであり、洗剤組成物に通常含まれる成分である。本発明の洗剤組成物に用いることのできる洗剤成分としては、アニオン性界面活性剤、ノニオン性界面活性剤、カチオン性界面活性剤、両性界面活性剤、キレート剤(ゼオライト、有機ビルダー等)、中性無機ビルダー、再汚染防止剤、粘度調整剤、柔軟付与剤、還元剤、漂白剤、漂白活性化剤、蛍光増白剤、香料、酵素、色素、表面改質剤、抑泡剤、酸化防止剤、水等が挙げられる。   The detergent component includes a component that improves a cleaning component, a bleaching component, manufacturability, and powder physical properties, and is a component that is usually included in a detergent composition. The detergent components that can be used in the detergent composition of the present invention include anionic surfactants, nonionic surfactants, cationic surfactants, amphoteric surfactants, chelating agents (zeolites, organic builders, etc.), Inorganic builder, anti-contamination agent, viscosity modifier, softening agent, reducing agent, bleach, bleach activator, fluorescent brightener, fragrance, enzyme, dye, surface modifier, foam suppressor, antioxidant Agents, water and the like.

温度40〜75℃のドウ状組成物を成形させるためには、上記α−スルホ脂肪酸アルキルエステル塩含有粒子と洗剤成分とを、温度制御可能な装置内で捏和・混練すればよい。その際、圧力をかけて捏和・混練することにより、より均一なドウ状組成物を得ることができる。   In order to form a dough-like composition at a temperature of 40 to 75 ° C., the α-sulfo fatty acid alkyl ester salt-containing particles and the detergent component may be kneaded and kneaded in a temperature-controllable apparatus. At that time, a more uniform dough-like composition can be obtained by applying pressure and kneading and kneading.

洗剤成分としては、石鹸を用いてもよい。その場合は、石鹸を水分が20%以下、好ましくは10%以下になるまで濃縮した石鹸濃縮物、あるいは石鹸をノニオン性界面活性剤と混合し、水分を20%以下、好ましくは10%以下になるまで濃縮した石鹸/ノニオン性界面活性剤濃縮物を用いることが好ましい。原料持込の水分を削減することで、粉砕時の装置内付着が改善されやすくなり、石鹸/ノニオン性界面活性剤濃縮物を用いた場合には、得られた高嵩密度粒状洗剤組成物の溶解性が改善される。   As the detergent component, soap may be used. In that case, a soap concentrate in which soap is concentrated to 20% or less, preferably 10% or less, or soap is mixed with a nonionic surfactant, and the moisture is reduced to 20% or less, preferably 10% or less. It is preferred to use a soap / nonionic surfactant concentrate concentrated to the end. By reducing the moisture contained in the raw material, adhesion in the apparatus during pulverization is easily improved, and when a soap / nonionic surfactant concentrate is used, the resulting high bulk density granular detergent composition Solubility is improved.

α−スルホ脂肪酸アルキルエステル塩含有粒子と洗剤成分との混合比(質量比)は、96:4〜4:96が好ましく、より好ましくは60:40〜5:95、特に50:50〜10:90が好ましい。α−スルホ脂肪酸アルキルエステル塩含有粒子の配合率が96%を超えると、混合する洗剤成分が少量であるため、本発明の製造方法の利点を得ることができない場合がある。一方、4%未満であると、低温、低水分のα−スルホ脂肪酸アルキルエステル塩含有粒子を用いることによる効果が発揮されない場合がある。   The mixing ratio (mass ratio) of the α-sulfo fatty acid alkyl ester salt-containing particles and the detergent component is preferably 96: 4 to 4:96, more preferably 60:40 to 5:95, particularly 50:50 to 10: 90 is preferred. When the blending ratio of the α-sulfo fatty acid alkyl ester salt-containing particles exceeds 96%, there are cases where the advantages of the production method of the present invention cannot be obtained because the detergent component to be mixed is small. On the other hand, if it is less than 4%, the effect of using low-temperature, low-moisture α-sulfo fatty acid alkyl ester salt-containing particles may not be exhibited.

まず、捏和・混練装置内に第[I]の工程で得られたα−スルホ脂肪酸アルキルエステル塩混合粒子と洗剤成分を投入し捏和・混練する。得られた捏和・混練物が、40〜75℃のドウ状組成物となるように操作する必要がある。40℃よりも低い場合には、捏和・混練装置への負荷が過大となり、75℃よりも高くなると、混練物の粉砕機への付着が生じる。処理時間は、通常0.2〜5分、好ましくは0.5〜3分である。ドウ状とは、パン生地状で半固形に近い状態となっていることをいう。   First, the α-sulfo fatty acid alkyl ester salt mixed particles obtained in the step [I] and the detergent component are put into a kneading and kneading apparatus and kneaded and kneaded. It is necessary to operate so that the obtained kneaded and kneaded product becomes a dough-like composition at 40 to 75 ° C. When the temperature is lower than 40 ° C., the load on the kneading and kneading apparatus becomes excessive, and when the temperature is higher than 75 ° C., the kneaded material adheres to the pulverizer. The treatment time is usually 0.2 to 5 minutes, preferably 0.5 to 3 minutes. The dough shape means a dough-like shape that is almost semi-solid.

得られたドウ状組成物を粉砕機に供給し、粉砕して顆粒とする。粉砕処理は、一般に5〜30℃、好ましくは10〜25℃、より好ましくは10〜20℃の冷風を導入しながら行うことが適当である。温度が5℃よりも低い場合には、結露が発生しやすくなる場合がある。一方、30℃よりも高くなると、逆に粉砕機への付着が生じやすくなる場合がある。処理時間は、通常、1〜30秒、好ましくは3〜30秒である。また、上述の粉砕操作の前処理として、必要に応じてドウ状組成物を任意の形状(通常円柱ペレット状とする)に成形する押出操作を行ってもよい。   The obtained dough-like composition is supplied to a pulverizer and pulverized into granules. The pulverizing treatment is generally performed while introducing cold air of 5 to 30 ° C, preferably 10 to 25 ° C, more preferably 10 to 20 ° C. When the temperature is lower than 5 ° C., condensation may easily occur. On the other hand, when the temperature is higher than 30 ° C., adhesion to the pulverizer tends to occur. The treatment time is usually 1 to 30 seconds, preferably 3 to 30 seconds. Moreover, you may perform the extrusion operation which shape | molds a dough-like composition in arbitrary shapes (it is usually set as columnar pellet shape) as needed as pre-processing of the above-mentioned grinding | pulverization operation.

粉砕機への付着を改良するために、粉砕時に粉砕助剤を用いることが好ましい。粉砕処理に好ましく使用される微粉末としては、従来より、粉砕の際に使用される微粉末が、特に制限されることなく使用され、1種単独で又は2種以上を適宜組み合わせて用いることができる。微粉末としては、例えば、A型ゼオライト、炭酸ナトリウム、炭酸カルシウム、シリカ、タルク、ベントナイト等が挙げられる。この中でも、A型ゼオライトや、炭酸ナトリウムが好ましい。また、平均粒径としては、通常、1〜50μm、好ましくは1〜30μmとすることが適当である。なお、平均粒径は実施例記載の測定方法による。   In order to improve adhesion to the pulverizer, it is preferable to use a pulverization aid during pulverization. As the fine powder preferably used for the pulverization treatment, the fine powder used in the pulverization is conventionally used without particular limitation, and one kind alone or two or more kinds may be used in appropriate combination. it can. Examples of the fine powder include A-type zeolite, sodium carbonate, calcium carbonate, silica, talc, bentonite and the like. Among these, A-type zeolite and sodium carbonate are preferable. The average particle size is usually 1 to 50 μm, preferably 1 to 30 μm. In addition, an average particle diameter is based on the measuring method as described in an Example.

捏和・混練に用いる捏和・混練装置としては、密閉式の圧密化処理装置が好ましく、より好ましくは横型連続式ニーダーである。ニーダーの他に、一軸又は二軸スクリュー押出機等を好適に用いることができる。具体的には、横型連続式ニーダーとして、KRCニーダー[(株)栗本鐵工所製]が挙げられる。粉砕装置としては、フィッツミル[ホソカワミクロン(株)製]、スピードミル[岡田精工(株)製]等が挙げられる。   As the kneading and kneading apparatus used for kneading and kneading, a sealed compacting apparatus is preferable, and a horizontal continuous kneader is more preferable. In addition to the kneader, a single screw or twin screw extruder can be suitably used. Specifically, as the horizontal continuous kneader, there is a KRC kneader [manufactured by Kurimoto Steel Works]. Examples of the pulverizer include Fitz Mill [manufactured by Hosokawa Micron Co., Ltd.], Speed Mill [manufactured by Okada Seiko Co., Ltd.], and the like.

ドウ状組成物を粉砕して得られた顆粒をそのまま、高嵩密度粒状洗剤組成物としてもよいが、顆粒にコーティング剤を添加してコーティング処理してもよい。これにより、顆粒の流動性を改良することができる。コーティング剤としては、ゼオライト、酸化珪素、粘度鉱物、金属石鹸、無機硫酸塩が好ましい。特に好ましくは、キレート剤としても寄与するゼオライトである。また硫酸カリウムをコーティングすることで、溶解性を改善することができる。コーティング剤は、高嵩密度粒状洗剤組成物中に、一般に0.5〜15%、好ましくは1〜10%の量で使用することが適当である。   Granules obtained by pulverizing the dough-like composition may be directly used as a high bulk density granular detergent composition, but a coating agent may be added to the granules for coating treatment. Thereby, the fluidity | liquidity of a granule can be improved. As the coating agent, zeolite, silicon oxide, viscous mineral, metal soap, and inorganic sulfate are preferable. Particularly preferred are zeolites that also contribute as chelating agents. Moreover, solubility can be improved by coating with potassium sulfate. The coating agent is suitably used in the high bulk density granular detergent composition, generally in an amount of 0.5 to 15%, preferably 1 to 10%.

さらに、顆粒に酵素、色素、香料等を後添加して、高嵩密度粒状洗剤組成物とすることもできる。また、得られた顆粒の発塵が問題となる場合、ノニオン性界面活性剤等を少量噴霧してもよい。これにより発塵の原因となる微粉の飛散を防ぐため発塵を抑制できる。また、高嵩密度粒状洗剤組成物の溶解性が向上する場合がある。   Furthermore, an enzyme, a pigment | dye, a fragrance | flavor, etc. can be post-added to a granule, and it can also be set as a high bulk density granular detergent composition. Moreover, when dusting of the obtained granule becomes a problem, you may spray a small amount of nonionic surfactants. Thereby, in order to prevent scattering of the fine powder which causes dust generation, dust generation can be suppressed. Moreover, the solubility of a high bulk density granular detergent composition may improve.

高嵩密度粒状洗剤組成物中のα−スルホ脂肪酸アルキルエステル塩の含有量は、高嵩密度粒状洗剤組成物中3%以上が好ましく、より好ましくは3〜70%である。3%未満では本発明の特性が有効に発揮されない場合があり、70%を超えると低温溶解性が低下する場合がある。   The content of the α-sulfo fatty acid alkyl ester salt in the high bulk density granular detergent composition is preferably 3% or more, more preferably 3 to 70% in the high bulk density granular detergent composition. If it is less than 3%, the characteristics of the present invention may not be exhibited effectively, and if it exceeds 70%, the low-temperature solubility may be reduced.

本発明の高嵩密度粒状洗剤組成物は、さらに、ビルダー粒子や界面活性剤粒子と混合して、洗剤組成物としてもよい。   The high bulk density granular detergent composition of the present invention may be further mixed with builder particles or surfactant particles to form a detergent composition.

本発明の高嵩密度粒状洗剤組成物の嵩密度は、0.6g/cm3以上であり、好ましくは0.6〜1.2g/cm3である。平均粒径は、300〜1000μmが好ましく、さらに好ましくは350〜700μmである。平均粒径が300μm未満であると微粉が増加するので、粉体流動性が低下する場合がある。一方、1000μmを超えると、低温溶解性が低下する場合がある。なお、平均粒径及び嵩密度の測定は実施例の方法による。 The bulk density of the high bulk density granular detergent composition of the present invention is 0.6 g / cm 3 or more, preferably 0.6 to 1.2 g / cm 3. The average particle size is preferably 300 to 1000 μm, more preferably 350 to 700 μm. If the average particle size is less than 300 μm, the fine powder increases, and the powder fluidity may decrease. On the other hand, when it exceeds 1000 μm, the low-temperature solubility may decrease. In addition, the measurement of an average particle diameter and a bulk density is based on the method of an Example.

以下、実施例及び比較例を示し、本発明を具体的に説明するが、本発明は下記の実施例に制限されるものではない。なお、下記の例において特に明記のない場合は、組成の「%」は質量%、比率は質量比を示す。   EXAMPLES Hereinafter, although an Example and a comparative example are shown and this invention is demonstrated concretely, this invention is not restrict | limited to the following Example. In the following examples, unless otherwise specified, “%” in the composition represents mass%, and the ratio represents mass ratio.

[α−スルホ脂肪酸アルキルエステル塩含有粒子1〜12の調製例]
[撹拌造粒法]
(混合・中和及び造粒工程:撹拌造粒機)
表1,2記載の組成に従い、アルカリ性無機粉体を含む粉体原料(コーティング剤は除く)を、ジャケットに10℃の冷水を通した20Lレーディゲミキサー((株)マツボー製、型式M−20)に、充填率50容積%(体積10L)になるような量を投入した。このときの粉体温度は30℃であった。その後、30秒間主軸、チョッパーを各々150rpm、6000rpmで回転させた後停止した。α−スルホ脂肪酸アルキルエステル塩含有粒子7〜12においては、LAS−Hを添加した。LAS−Hは2分割し、1/2量添加後15秒間撹拌する操作を2回繰り返して全量添加した。次いで、α−スルホ脂肪酸アルキルエステル(温度:60℃)を添加した。α−スルホ脂肪酸アルキルエステルは3分割し、1/3量添加後15秒間撹拌する操作を3回繰り返し全量を添加した。添加終了後の温度は約90℃であった。
(漂白工程:撹拌造粒機)
表1,2記載の量の過酸化水素水溶液を、α−スルホ脂肪酸アルキルエステル全量添加後に添加した。添加時の主軸及びチョッパー回転数は混合時と同様とした。
[Preparation example of α-sulfo fatty acid alkyl ester salt-containing particles 1 to 12]
[Stirring granulation method]
(Mixing / neutralization and granulation process: stirring granulator)
According to the composition described in Tables 1 and 2, a 20 L Ladige mixer (model M-manufactured by Matsubo Co., Ltd.) in which a powder raw material containing an alkaline inorganic powder (excluding the coating agent) was passed through a jacket with cold water at 10 ° C. 20) was charged in an amount such that the filling rate was 50 volume% (volume 10 L). The powder temperature at this time was 30 ° C. Thereafter, the spindle and chopper were rotated at 150 rpm and 6000 rpm, respectively, for 30 seconds and then stopped. In the α-sulfo fatty acid alkyl ester salt-containing particles 7 to 12, LAS-H was added. LAS-H was divided into two, and after adding 1/2 amount, the operation of stirring for 15 seconds was repeated twice, and the entire amount was added. Next, α-sulfo fatty acid alkyl ester (temperature: 60 ° C.) was added. The α-sulfo fatty acid alkyl ester was divided into three parts, and the operation of stirring for 15 seconds after the addition of 1/3 amount was repeated 3 times to add the total amount. The temperature after the addition was about 90 ° C.
(Bleaching process: stirring granulator)
The aqueous hydrogen peroxide solution in the amount shown in Tables 1 and 2 was added after the total amount of α-sulfo fatty acid alkyl ester was added. The main shaft and chopper rotation speed at the time of addition were the same as at the time of mixing.

(熟成工程:撹拌造粒機)
α−スルホ脂肪酸アルキルエステル塩含有粒子5,6については、得られた中和物の熟成をレーディゲミキサー内で行った。主軸及びチョッパー回転数は混合時と同様とし、気流は主軸の軸シール部及び、特別に壁部に設けた気流導入ノズルより導入し、風温度20℃で60秒間熟成した。
(コーティング工程)
漂白工程後又は熟成工程後、粒子を撹拌造粒機より排出し、直径400mm、長さ700mm、Fr数を0.14とした水平円筒回転ドラム内で表1,2記載の量のゼオライト<1>をコーティングした。
(Aging process: stirring granulator)
For the α-sulfo fatty acid alkyl ester salt-containing particles 5 and 6, the obtained neutralized product was aged in a Laedige mixer. The rotation speed of the main shaft and chopper was the same as that during mixing, and the air flow was introduced from the shaft seal portion of the main shaft and an air flow introduction nozzle provided on a special wall portion and aged at a wind temperature of 20 ° C. for 60 seconds.
(Coating process)
After the bleaching step or the aging step, the particles are discharged from the stirring granulator, and the amount of zeolite described in Tables 1 and 2 in a horizontal cylindrical rotating drum with a diameter of 400 mm, a length of 700 mm, and an Fr number of 0.14 <1 > Coated.

コーティングされたα−スルホ脂肪酸アルキルエステル塩含有粒子の粉体物性を、下記方法で測定した。結果を表1,2に併記する。   The powder physical properties of the coated α-sulfo fatty acid alkyl ester salt-containing particles were measured by the following method. The results are shown in Tables 1 and 2.

評価項目
(1)流動性(安息角θ):45℃の雰囲気で約20cmの高さからロートを通して試料を落とし、円錐状堆積層を形成させ、底円の直径と高さから下記式に基づいて角度θを算出し、下記評価基準で評価した。
θ:Tanθ=高さ/底円の半径
<評価基準>
○:θ≦60°
△:60°<θ≦70°
×:70°<θ
(2)非固化性:3#のふるいを通し、ふるいに通した全量に対するふるい上部に残った粒子の質量%を測定し、下記評価基準で評価した。
<評価基準>
○:10%未満
△:10%以上40%未満
×:40%以上
Evaluation item (1) Fluidity (angle of repose θ): A sample is dropped through a funnel from a height of about 20 cm in an atmosphere of 45 ° C. to form a conical sedimentary layer, and based on the following formula from the diameter and height of the bottom circle The angle θ was calculated and evaluated according to the following evaluation criteria.
θ: Tanθ = height / radius of bottom circle
<Evaluation criteria>
○: θ ≦ 60 °
Δ: 60 ° <θ ≦ 70 °
×: 70 ° <θ
(2) Non-solidifying property: The mass% of particles remaining on the top of the sieve was measured with respect to the total amount passed through the 3 # sieve and evaluated according to the following evaluation criteria.
<Evaluation criteria>
○: Less than 10% △: 10% or more and less than 40% ×: 40% or more

Figure 2005187568
Figure 2005187568

Figure 2005187568
Figure 2005187568

[α−スルホ脂肪酸アルキルエステル塩含有粒子13〜24の調製例]
(混合・中和及び造粒工程:流動層)
表3,4記載の組成に従い、アルカリ性無機粉体を含む粉体原料(コーティング剤は除く)を、流動層((株)パウレックス製、Glatt−POWREX、型番FD−WRT−20)に、静置時の粉体層厚が200mmになる量を添加した。その後、20℃の風を流動層内に送り、粉体が流動化したことを確認した後に、α−スルホ脂肪酸アルキルエステル塩含有粒子19〜24においては、LAS−Hを流動化している粉体層に向け、上部より噴霧した。次いで、α−スルホ脂肪酸アルキルエステルを流動化している粉体層に向け、上部より噴霧した。流動層内風速は流動化状態を確認しながら、0.2〜2.0m/sの範囲で調整した。α−スルホ脂肪酸アルキルエステルは60℃で噴霧を行い、噴霧するためのノズルは噴霧角度70°の2流体ホローコーンノズルを使用した。噴霧速度は約400g/minで行った。
[Preparation example of α-sulfo fatty acid alkyl ester salt-containing particles 13 to 24]
(Mixing / neutralization and granulation process: fluidized bed)
In accordance with the composition described in Tables 3 and 4, the powder raw material (excluding the coating agent) containing the alkaline inorganic powder was placed on a fluidized bed (Glatt-POWREX, model FD-WRT-20, manufactured by Paulex Co., Ltd.) The amount of the powder layer thickness at the time of placing was added to 200 mm. Then, after 20 degreeC wind was sent into the fluidized bed and it was confirmed that the powder was fluidized, in the α-sulfo fatty acid alkyl ester salt-containing particles 19 to 24, the powder in which LAS-H was fluidized Sprayed from the top towards the layer. Next, the α-sulfo fatty acid alkyl ester was sprayed from the top toward the fluidized powder layer. The air velocity in the fluidized bed was adjusted in the range of 0.2 to 2.0 m / s while confirming the fluidized state. The α-sulfo fatty acid alkyl ester was sprayed at 60 ° C., and a two-fluid hollow cone nozzle having a spray angle of 70 ° was used as the nozzle for spraying. The spray rate was about 400 g / min.

(漂白工程:流動層)
表3,4記載の量の過酸化水素水溶液を噴霧により添加した。噴霧時の流動層内風速は流動化状態を確認しながら0.2〜2.0m/sの範囲で調整した。
(Bleaching process: fluidized bed)
Amounts of aqueous hydrogen peroxide described in Tables 3 and 4 were added by spraying. The air velocity in the fluidized bed during spraying was adjusted in the range of 0.2 to 2.0 m / s while confirming the fluidized state.

(熟成工程:流動層)
α−スルホ脂肪酸アルキルエステルの噴霧終了後、流動層風温度を40℃に変更し、5分間熟成を行った。
(Aging process: fluidized bed)
After spraying the α-sulfo fatty acid alkyl ester, the fluidized bed air temperature was changed to 40 ° C., and aging was performed for 5 minutes.

(コーティング工程)
熟成後、粒子を流動層より排出し、直径400mm、長さ700mm、Fr数を0.14とした水平円筒回転ドラム内で表3,4記載の量のゼオライト<1>をコーティングした。
(Coating process)
After aging, the particles were discharged from the fluidized bed, and the amount of zeolite <1> listed in Tables 3 and 4 was coated in a horizontal cylindrical rotating drum having a diameter of 400 mm, a length of 700 mm, and a Fr number of 0.14.

(粉体物性の評価)
コーティング工程を行ったα−スルホ脂肪酸アルキルエステル塩含有粒子を、上記と同様の方法で物性評価した。結果を表3,4に併記する。
(Evaluation of powder properties)
The physical properties of the α-sulfo fatty acid alkyl ester salt-containing particles subjected to the coating process were evaluated in the same manner as described above. The results are also shown in Tables 3 and 4.

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[実施例1〜28]
(捏和)
表1〜4で得られたα−スルホ脂肪酸アルキルエステル塩含有粒子と、表5〜10に示す組成の原料を、表5〜10記載の割合でKRCニーダー((株)栗本鐵工所製、S−4型)に投入した。この時のα−スルホ脂肪酸アルキルエステル塩含有粒子の水分、温度、及び得られた捏和混練物の温度を表5〜10に併記した。能力は捏和混練物として150kg/hrであった。次いで、捏和混練物をペレッター(不二パウダル(株)製、EXDFJS−60、ダイス孔径10mmφ)に投入し、直径10mmφ、平均長さ10〜30mmのペレット状固形物の形成をした。
[Examples 1 to 28]
(Yewa)
The α-sulfo fatty acid alkyl ester salt-containing particles obtained in Tables 1 to 4 and the raw materials having the compositions shown in Tables 5 to 10 were mixed at a ratio described in Tables 5 to 10 with a KRC kneader (manufactured by Kurimoto Steel Works, S-4 type). The water content and temperature of the α-sulfo fatty acid alkyl ester salt-containing particles at this time and the temperature of the resulting kneaded kneaded product are also shown in Tables 5 to 10. The capacity was 150 kg / hr as a kneaded mixture. Next, the kneaded mixture was put into a pelleter (EXDFJS-60 manufactured by Fuji Powder Co., Ltd., die hole diameter 10 mmφ) to form a pellet-like solid having a diameter of 10 mmφ and an average length of 10 to 30 mm.

(粉砕)
得られたペレット状固形物とゼオライト<2>を、94.49:5.51(有り姿質量比)の比率で、15℃の冷風とともに3段直列に配置したフィッツミル(ホソカワミクロン(株)製、DKA−3型、1段目スクリーン径:12mmφ、2段目スクリーン径:4mmφ、3段目スクリーン径:2mmφ)に投入し、処理速度160kg/hrで粉砕して顆粒を得た。この際、ブレード回転数は1880〜4700rpmの間で調整し、平均粒径400〜600μmの粒子を得た。
(Pulverization)
Fitzmill (manufactured by Hosokawa Micron Co., Ltd.) in which the obtained pellet-shaped solid and zeolite <2> were arranged in three stages in series with cold air at 15 ° C. at a ratio of 94.49: 5.51 (mass ratio). , DKA-3 type, first stage screen diameter: 12 mmφ, second stage screen diameter: 4 mmφ, third stage screen diameter: 2 mmφ) and pulverized at a processing speed of 160 kg / hr to obtain granules. At this time, the blade rotation speed was adjusted between 1880 and 4700 rpm to obtain particles having an average particle diameter of 400 to 600 μm.

得られた顆粒を水平円筒転動ドラム(Fr数0.14、直径0.70m、長さ1.40m、傾斜角3°、厚さ1mm×高さ50mm×長さ350mmの邪魔板15枚付き)にゼオライト<1>とともに連続投入し、内部でノニオン性界面活性剤を噴霧して、高嵩密度粒状洗剤組成物を得た。なお、水平円筒転動ドラムに投入する顆粒、ゼオライト<1>、噴霧ノニオン性界面活性剤の有り姿質量比は96.96:1.91:1.13であった。   The obtained granule was provided with a horizontal cylindrical rolling drum (Fr number 0.14, diameter 0.70 m, length 1.40 m, inclination angle 3 °, thickness 1 mm × height 50 mm × length 350 mm baffle plate) ) Together with zeolite <1> and sprayed with a nonionic surfactant inside to obtain a high bulk density granular detergent composition. The solid mass ratio of the granules, zeolite <1>, and sprayed nonionic surfactant charged into the horizontal cylindrical rolling drum was 96.96: 1.91: 1.13.

(粉体物性の評価及び粉砕機付着評価)
得られた顆粒を、上記と同様の方法で物性評価した。また粉砕機付着の評価を下記の評価基準で評価し、下記方法で嵩密度及び平均粒径を測定した。結果を表5〜10に併記する。
(Evaluation of powder properties and crusher adhesion)
The physical properties of the obtained granules were evaluated in the same manner as described above. Moreover, the evaluation of pulverizer adhesion was evaluated according to the following evaluation criteria, and the bulk density and the average particle diameter were measured by the following methods. The results are also shown in Tables 5-10.

評価項目
(3)粉砕機付着:粉砕機付着を下記評価基準で評価した。
<評価基準>
○:ほとんど付着物が無い、又は付着物があるが問題のないレベル
△:付着が目立つ
×:付着が多く、製造困難なレベル
Evaluation item (3) Crusher adhesion: Crusher adhesion was evaluated according to the following evaluation criteria.
<Evaluation criteria>
○: Almost no deposit or level with no deposit, but no problem △: Conspicuous adherence ×: Level with many deposits, difficult to manufacture

(4)平均粒径の測定
目開き1680μm、1410μm、1190μm、1000μm、710μm、500μm、350μm、250μm、149μm、の9段の篩と受け皿を用いて分級操作を行なった。分級操作は、受け皿に目開きの小さな篩から目開きの大きな篩の順に積み重ね、最上部の1680μmの篩の上から100g/回のベースサンプルを入れ、蓋をしてロータップ型ふるい振盪機((株)飯田製作所製、タッピング:156回/分、ローリング:290回/分)に取り付け、10分間振動させた後、それぞれの篩及び受け皿上に残留したサンプルを篩目ごとに回収する操作を行った。
この操作を繰すことによって1410〜1680μm(1410μm.on)、1190〜1410μm(1190μm.on)、1000〜1190μm(1000μm.on)、710〜1000μm(710μm.on)、500〜710μm(500μm.on)、350〜500μm(350μm.on)、250〜350μm(250μm.on)、149〜250μm(149μm.on)、皿〜149μm(149μm.pass)の各粒径の分級サンプルを得て、重量頻度(%)を算出した。
次に、算出した重量頻度が50%以上となる最初の篩の目開きをaμmとし、またaμmよりも一段大きい篩の目開きをbμmとし、受け皿からaμmの篩までの重量頻度の積算をc%、またaμmの篩上の重量頻度をd%として、次式によって平均粒径(重量50%)を求めた。
(4) Measurement of average particle diameter Classification operation was performed using a 9-stage sieve having a mesh opening of 1680 μm, 1410 μm, 1190 μm, 1000 μm, 710 μm, 500 μm, 350 μm, 250 μm, and 149 μm. In the classification operation, a sieve with a small opening is stacked on a tray in the order of a sieve with a large opening, and a base sample of 100 g / time is placed on the top of the top 1680 μm sieve, and a lid is put on a low-tap sieve shaker (( Attached to Iida Seisakusho Co., Ltd., Tapping: 156 times / minute, Rolling: 290 times / minute) After shaking for 10 minutes, the sample remaining on each sieve and tray is collected for each sieve. It was.
By repeating this operation, 1410 to 1680 μm (1410 μm.on), 1190 to 1410 μm (1190 μm.on), 1000 to 1190 μm (1000 μm.on), 710 to 1000 μm (710 μm.on), 500 to 710 μm (500 μm.on). ), 350-500 [mu] m (350 [mu] m.on), 250-350 [mu] m (250 [mu] m.on), 149-250 [mu] m (149 [mu] m.on), dishes-149 [mu] m (149 [mu] m.pass) (%) Was calculated.
Next, the opening of the first sieve with a calculated weight frequency of 50% or more is set to a μm, the opening of the sieve that is one step larger than a μm is set to b μm, and the cumulative weight frequency from the tray to the sieve of a μm is calculated as c %, And the weight frequency on a μm sieve was d%, and the average particle size (weight 50%) was determined by the following formula.

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(5)嵩密度の測定
嵩密度はJIS K3362に準じて測定した。
(5) Measurement of bulk density The bulk density was measured according to JIS K3362.

[比較例1〜3]
(捏和)
α−スルホ脂肪酸アルキルエステル(酸)、α−スルホ脂肪酸アルキルエステルナトリウム塩ペースト、及びα−スルホ脂肪酸アルキルエステルナトリウム塩/ノニオン性界面活性剤濃縮物と、表11に示す組成の原料を、表11記載の割合でKRCニーダー((株)栗本鐵工所製、S−4型)に導入した。捏和混練機投入時のα−スルホ脂肪酸アルキルエステル塩含有物の水分、温度、及び得られた捏和混練物の温度を表11に併記した。能力は捏和混練物として150kg/hrであった。次いで、捏和混練物をペレッター(不二パウダル社製、EXDFJS−60、ダイス孔径10mmφ)に投入し、直径10mmφ、平均長さ10〜30mmのペレット状固形物の形成をした。
[Comparative Examples 1-3]
(Yewa)
α-sulfo fatty acid alkyl ester (acid), α-sulfo fatty acid alkyl ester sodium salt paste, α-sulfo fatty acid alkyl ester sodium salt / nonionic surfactant concentrate, and raw materials having the composition shown in Table 11 It was introduced into a KRC kneader (manufactured by Kurimoto Steel Works, Model S-4) at the stated ratio. Table 11 shows the water content and temperature of the α-sulfo fatty acid alkyl ester salt-containing material when the kneading machine was charged, and the temperature of the obtained kneaded kneaded material. The capacity was 150 kg / hr as a kneaded mixture. Next, the kneaded mixture was put into a pelleter (EXDFJS-60, manufactured by Fuji Powder Co., Ltd., die hole diameter: 10 mmφ) to form a pellet-like solid having a diameter of 10 mmφ and an average length of 10-30 mm.

(粉砕)
得られたペレット状固形洗剤とゼオライト<2>を、94.49:5.51(有り姿質量比)の比率で15℃の冷風とともに3段直列に配置したフィッツミル(ホソカワミクロン(株)製、DKA−3型、1段目スクリーン径:12mmφ、2段目スクリーン径:4mmφ、3段目スクリーン径:2mmφ)に投入し、処理速度160kg/hrで粉砕して顆粒(高嵩密度粒状洗剤組成物)を得た。この際、ブレード回転数は1880〜4700rpmの間で調整し、平均粒径は400〜600μmの粒子を得た。
(Pulverization)
Fitzmill (manufactured by Hosokawa Micron Corporation) in which the obtained pellet-shaped solid detergent and zeolite <2> were arranged in three stages in series with cold air of 15 ° C. at a ratio of 94.49: 5.51 (mass ratio). DKA-3 type, 1st stage screen diameter: 12 mmφ, 2nd stage screen diameter: 4 mmφ, 3rd stage screen diameter: 2 mmφ), and pulverized at a processing speed of 160 kg / hr (high bulk density granular detergent composition) Product). At this time, the blade rotation speed was adjusted between 1880 and 4700 rpm, and particles having an average particle diameter of 400 to 600 μm were obtained.

(粉体物性の評価及び粉砕機付着評価)
得られた顆粒を、上記と同様の方法で物性評価及び粉砕機付着評価、並びに嵩密度及び平均粒径を測定した。結果を表11に併記する。
(Evaluation of powder properties and crusher adhesion)
The obtained granules were evaluated for physical properties and pulverizer adhesion, bulk density and average particle size in the same manner as described above. The results are also shown in Table 11.

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[実施例29〜36]
実施例1〜28で得られた嵩密度粒状洗剤組成物と、表14,15に記載の混合粒子とを表12,13記載の比率(質量比)で混合し、混合品の嵩密度粒状洗剤組成物を得た。具体的には、水平円筒ドラム(直径400mm、長さ700mm、Fr数0.14)に、高嵩密度粒状洗剤組成物、混合粒子、酵素を投入し、ドラム内で色素、香料を噴霧し、2分間混合した後排出した。ドラムに投入する酵素、色素、香料の質量は、実施例1〜28で得られた嵩密度粒状洗剤組成物と混合粒子の合計量100%に対して、1.53%、0.015%、0.31%とした。得られた混合品を実施例1と同様の方法で評価した。評価結果を表12,13に併記する。なお、混合粒子1,2については下記に示す。
[Examples 29 to 36]
The bulk density granular detergent composition obtained in Examples 1 to 28 and the mixed particles described in Tables 14 and 15 were mixed at the ratios (mass ratio) described in Tables 12 and 13, and the bulk density granular detergents of the mixed products were mixed. A composition was obtained. Specifically, in a horizontal cylindrical drum (diameter 400 mm, length 700 mm, Fr number 0.14), a high bulk density granular detergent composition, mixed particles, and enzyme are charged, and a dye and a fragrance are sprayed in the drum. After mixing for 2 minutes, it was discharged. The mass of the enzyme, the pigment, and the fragrance charged into the drum is 1.53%, 0.015% with respect to 100% of the total amount of the bulk density granular detergent composition and the mixed particles obtained in Examples 1 to 28, It was 0.31%. The obtained mixture was evaluated in the same manner as in Example 1. The evaluation results are also shown in Tables 12 and 13. The mixed particles 1 and 2 are shown below.

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[混合粒子1の調製例]
表14に示す組成のうち、炭酸ナトリウム<3>を、鋤刃上ショベルを装備し、ショベル−壁面間クリアランスが5mmのレーディゲミキサー((株)マツボー製、M20型)に投入し(充填率30容量%)、主軸200rpmの撹拌を開始した(チョッパーは停止)。撹拌開始後10秒後に、アクリル酸/マレイン酸コポリマーナトリウム水溶液を30秒で添加し、造粒・被覆操作を行った。引き続きレーディゲミキサーの撹拌を継続しつつ、表14に示した量のラウリン酸を30秒で添加し被覆した。最後にゼオライト<1>を添加し、30秒間撹拌を続け粒子を得た。得られた粒子を目開き2000μmの篩を用いて分級し、2000μmの篩を通過するものを混合粒子1とした。
[Preparation Example of Mixed Particle 1]
Of the compositions shown in Table 14, sodium carbonate <3> was charged into a Roedige mixer (M20 type, manufactured by Matsubo Co., Ltd.) equipped with a shovel-top shovel and a shovel-wall clearance of 5 mm (filling) The stirring of the main shaft 200 rpm was started (the chopper was stopped). Ten seconds after the start of stirring, an acrylic acid / maleic acid sodium copolymer aqueous solution was added in 30 seconds to perform granulation and coating operations. Subsequently, the amount of lauric acid shown in Table 14 was added in 30 seconds to continue coating while continuing the stirring of the Roedige mixer. Finally, zeolite <1> was added, and stirring was continued for 30 seconds to obtain particles. The obtained particles were classified using a sieve having an opening of 2000 μm, and the particles passing through the 2000 μm sieve were designated as mixed particles 1.

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[混合粒子2の調製例]
表15に示す量の12−ヒドロキシステアリン酸を80℃に加熱して、表15に示す量のノニオン性界面活性剤<2>に溶解し、液状のゲル化剤含有ノニオン性界面活性剤を調製した。次いで、表15に示す組成の粉体原料(合計体積8L)を、レーディゲミキサー((株)マツボー製、M−20型)に投入し、主軸(200rpm)とチョッパー(6000rpm)の撹拌を開始した。これに上記ゲル化剤含有ノニオン性界面活性剤を1分間で全量投入し、平均粒径400μmとなるまで撹拌造粒した。
[Preparation Example of Mixed Particle 2]
The amount of 12-hydroxystearic acid shown in Table 15 is heated to 80 ° C. and dissolved in the amount of nonionic surfactant <2> shown in Table 15 to prepare a liquid gelling agent-containing nonionic surfactant. did. Next, the powder raw materials (total volume 8 L) having the composition shown in Table 15 were put into a Laedige mixer (Matsubo Co., Ltd., M-20 type), and the spindle (200 rpm) and chopper (6000 rpm) were stirred. Started. The whole amount of the above-mentioned gelling agent-containing nonionic surfactant was added to this in 1 minute, and stirring and granulation was performed until the average particle size became 400 μm.

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実施例等で使用したものを下記に示す。
(1)α−スルホ脂肪酸アルキルエステル
原料となる脂肪酸メチルエステルは、商品名パステルM−14、パステルM−16(ライオンオレオケミカル(株)製)を質量比2:8で混合したものを使用した。α−スルホ脂肪酸アルキルエステルの製造方法は、特開2001−64248号公報の実施例1で開示されている方法に準拠し、エステル化工程後に抜き出しα−スルホ脂肪酸アルキルエステルとした。原料とした脂肪酸メチルエステルの性状、炭素分布を表16に示す。得られたα−スルホ脂肪酸アルキルエステルは純度89.1%であった。
What was used in the Example etc. is shown below.
(1) α-sulfo fatty acid alkyl ester The fatty acid methyl ester used as a raw material was a mixture of trade name pastel M-14 and pastel M-16 (manufactured by Lion Oleochemical Co., Ltd.) at a mass ratio of 2: 8. . The production method of α-sulfo fatty acid alkyl ester was based on the method disclosed in Example 1 of JP-A-2001-64248, and was extracted after the esterification step to obtain α-sulfo fatty acid alkyl ester. Table 16 shows the properties and carbon distribution of fatty acid methyl esters used as raw materials. The obtained α-sulfo fatty acid alkyl ester had a purity of 89.1%.

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(2)α−スルホ脂肪酸アルキルエステルナトリウム塩
ライオン(株)製、C14:C16=18:82のα−スルホ脂肪酸アルキルエステルナトリウム塩(純分約67%の水性ペースト)(不純分:FreeOil約1.5%、芒硝約1.1%、メチルサルフェート約3.3%、メタノール約0.65%等、残りは水分)
(2) α-sulfo fatty acid alkyl ester sodium salt manufactured by Lion Corporation, C14: C16 = 18: 82 α-sulfo fatty acid alkyl ester sodium salt (pure content: about 67% aqueous paste) (impure content: Free Oil about 1 0.5%, mirabilite about 1.1%, methyl sulfate about 3.3%, methanol about 0.65%, the rest is moisture)

(3)α−スルホ脂肪酸アルキルエステルナトリウム塩/ノニオン性界面活性剤濃縮物
ライオン(株)製、C14:C16=18:82のα−スルホ脂肪酸アルキルエステルナトリウム塩と炭素数12〜13のアルコールに平均15モルのエチレンオキサイドを付加したアルコールエトキシレートの混合濃縮物
[製造方法]
ライオン(株)製、C14:C16=18:82のα−スルホ脂肪酸アルキルエステルナトリウム塩に、炭素数12〜13のアルコールに平均15モルのエチレンオキサイドを付加したアルコールエトキシレート(α−スルホ脂肪酸アルキルエステル塩に対して25%)を添加し、リサイクルフラッシュ蒸発機(プレート熱交換器EX−11型(伝熱面積424.6m2)、(株)日阪製作所製)を用いて、加熱管温度110〜120℃、熱交換器内圧0.3MPa以下、循環圧0.6MPa以下で蒸発操作を行ない、水分を10〜13%になるまで常圧フラッシュ濃縮して、α−スルホ脂肪酸アルキルエステル塩とノニオン性界面活性剤の混合濃縮物を得た。
(3) α-sulfo fatty acid alkyl ester sodium salt / nonionic surfactant concentrate manufactured by Lion Corporation, C14: C16 = 18: 82 α-sulfo fatty acid alkyl ester sodium salt and alcohol having 12 to 13 carbon atoms Mixed concentrate of alcohol ethoxylates with an average of 15 moles of ethylene oxide added
[Production method]
Alcohol ethoxylate (α-sulfo fatty acid alkyl) obtained by adding an average of 15 moles of ethylene oxide to an alcohol having 12 to 13 carbon atoms to C14: C16 = 18: 82 α-sulfo fatty acid alkyl ester sodium salt manufactured by Lion Co., Ltd. 25% with respect to the ester salt) and using a recycle flash evaporator (plate heat exchanger EX-11 type (heat transfer area 424.6 m 2 ), manufactured by Nisaka Manufacturing Co., Ltd.) Evaporation operation is performed at 110 to 120 ° C., an internal pressure of the heat exchanger of 0.3 MPa or less, and a circulation pressure of 0.6 MPa or less, and the water is flash-concentrated at normal pressure until the content becomes 10 to 13%. A mixed concentrate of nonionic surfactant was obtained.

(4)炭酸ナトリウム<1>:旭硝子(株)製、軽灰、純分99%、嵩密度0.55g/cm3
炭酸ナトリウム<2>:軽灰を平均粒径10〜60μmに粉砕した軽灰粉砕品
炭酸ナトリウム<3>:旭硝子(株)製、粒灰
(5)炭酸カリウム:旭硝子(株)製、食添グレード、粉砕品、純分99%、嵩密度0.77g/cm3
(6)ゼオライト<1>:水沢科学(株)製、商品名シルトンB、嵩密度0.30g/cm3
ゼオライト<2>(粉砕助剤):コスモ社製、顆粒、純分80%、嵩密度0.77g/cm3
(7)過酸化水素:純正化学(株)製、一級試薬、過酸化水素35%含有水溶液
(4) Sodium carbonate <1>: manufactured by Asahi Glass Co., Ltd., light ash, pure content 99%, bulk density 0.55 g / cm 3
Sodium carbonate <2>: Light ash pulverized product obtained by grinding light ash to an average particle size of 10 to 60 μm Sodium carbonate <3>: Asahi Glass Co., Ltd., granular ash (5) Potassium carbonate: Asahi Glass Co., Ltd., food additive Grade, ground product, 99% pure, bulk density 0.77 g / cm 3
(6) Zeolite <1>: manufactured by Mizusawa Science Co., Ltd., trade name Shilton B, bulk density 0.30 g / cm 3
Zeolite <2> (grinding aid): manufactured by Cosmo, granule, pure content 80%, bulk density 0.77 g / cm 3
(7) Hydrogen peroxide: Pure Chemical Co., Ltd., first grade reagent, aqueous solution containing 35% hydrogen peroxide

(8)ノニオン性界面活性剤<1>:炭素数12〜13のアルコールに平均15モルのエチレンオキサイドを付加したアルコールエトキシレート(純度=90%、残部は未反応アルコール、PEG、水等)
(9)ノニオン性界面活性剤<2>:炭素数12〜15のアルコールに平均9モルのエチレンオキサイドを付加したアルコールエトキシレート(ライオン化学(株)製、ドバノックス25I)
(10)LAS−H:ライポン LH−200(ライオン(株)製)、炭素数10〜14のアルキル基を有する直鎖アルキルベンゼンスルホン酸(AI=96%、残部は未反応アルキルベンゼン、硫酸ナトリウム、水等)
(11)石鹸:C16:C18:TMD(C10〜20のエステル系混合物)=1:3:1の脂肪酸ナトリウム(AI=67%)
(8) Nonionic surfactant <1>: alcohol ethoxylate having an average of 15 moles of ethylene oxide added to an alcohol having 12 to 13 carbon atoms (purity = 90%, the remainder being unreacted alcohol, PEG, water, etc.)
(9) Nonionic surfactant <2>: Alcohol ethoxylate obtained by adding an average of 9 moles of ethylene oxide to an alcohol having 12 to 15 carbon atoms (manufactured by Lion Chemical Co., Ltd., Dovanox 25I)
(10) LAS-H: Raipon LH-200 (manufactured by Lion Corporation), linear alkylbenzene sulfonic acid having an alkyl group having 10 to 14 carbon atoms (AI = 96%, the balance being unreacted alkylbenzene, sodium sulfate, water etc)
(11) Soap: C16: C18: TMD (ester mixture of C10-20) = 1: 3: 1 fatty acid sodium (AI = 67%)

(12)石鹸濃縮物:C16:C18:TMD(C10〜20のエステル系混合物)=1:3:1の脂肪酸ナトリウム(AI=90%以上)
[製造方法]
石鹸(C16:C18:TMD(C10〜20のエステル系混合物)=1:3:1の脂肪酸ナトリウム(AI=67%))を(株)ダルトン製縦型ニーダー(25AM−rr)に投入し、ジャケット温度70℃にて蒸発操作を行い、水分が8%になるまで濃縮した。
(12) Soap concentrate: C16: C18: TMD (ester mixture of C10-20) = 1: 3: 1 fatty acid sodium (AI = 90% or more)
[Production method]
Soap (C16: C18: TMD (ester mixture of C10-20) = 1: 3: 1 fatty acid sodium (AI = 67%)) was put into a vertical kneader (25 AM-rr) manufactured by Dalton Co., Ltd. Evaporation was performed at a jacket temperature of 70 ° C., and the mixture was concentrated until the water content reached 8%.

(13)石鹸/ノニオン性界面活性剤濃縮物:C16:C18:TMD(C10〜20のエステル系混合物)=1:3:1の脂肪酸ナトリウムと炭素数12〜13のアルコールに平均15モルのエチレンオキサイドを付加したアルコールエトキシレートの混合濃縮物
[製造方法]
石鹸をダルトン製縦型ニーダー(25AM−rr)に投入し、さらに、ノニオン性界面活性剤(石鹸:ノニオン性界面活性剤=8/5)を添加し、ジャケット温度70℃にて蒸発操作を行い、水分が3.7%になるまで濃縮した。
(13) Soap / nonionic surfactant concentrate: C16: C18: TMD (ester mixture of C10-20) = 1: 3: 1 fatty acid sodium and alcohol having 12 to 13 carbon atoms on average 15 moles of ethylene Mixed concentrate of alcohol ethoxylate with added oxide [Production method]
The soap is put into a Dalton vertical kneader (25 AM-rr), nonionic surfactant (soap: nonionic surfactant = 8/5) is added, and evaporation operation is performed at a jacket temperature of 70 ° C. And concentrated until the water content was 3.7%.

(14)色素:大日精化工業製、群青
(15)亜硫酸ナトリウム:神洲化学(株)製、無水亜硫酸曹達
(16)アクリル酸/マレイン酸コポリマーナトリウム:日本触媒(株)製、商品名アクアリックTL−400(純分40%水溶液)
(17)ラウリン酸:日本油脂(株)製、エキストラオレイン
(18)非晶質シリカ:徳山曹達(株)製、トクシールN
(19)12−ヒドロキシステアリン酸:川研ファインケミカル(株)製
(20)香料:特開2002−146399号公報[表11]〜[表18]に示す香料組成物A
(21)酵素:ノボ・ノルディスク・バイオインダストリー(株)製、サビナーゼ12T(プロテアーゼ)


(14) Dye: manufactured by Dainichi Seika Kogyo, ultramarine (15) sodium sulfite: manufactured by Jinzu Chemical Co., Ltd., (16) sodium acrylate / maleic acid copolymer: manufactured by Nippon Shokubai Co., Ltd., trade name Aqua Rick TL-400 (40% pure water solution)
(17) Lauric acid: manufactured by NOF Corporation, extra olein (18) Amorphous silica: manufactured by Tokuyama Soda Co., Ltd., Toxeal N
(19) 12-Hydroxystearic acid: Kawaken Fine Chemical Co., Ltd. (20) Fragrance: Fragrance composition A shown in JP-A-2002-146399 [Table 11] to [Table 18]
(21) Enzyme: Novo Nordisk Bioindustry Co., Ltd., Sabinase 12T (protease)


Claims (3)

下記(I)及び(II)工程を含む高嵩密度粒状洗剤組成物の製造方法。
(I).(A)α−スルホ脂肪酸アルキルエステルと(B)アルカリ性無機粉体とを、撹拌造粒装置又は流動層造粒装置内で混合し、α−スルホ脂肪酸アルキルエステルの中和とα−スルホ脂肪酸アルキルエステル及びその中和物の造粒とを行い、α−スルホ脂肪酸アルキルエステル塩含有粒子を得る工程。
(II).上記α−スルホ脂肪酸アルキルエステル塩含有粒子と洗剤成分とを捏和・混練し、温度40〜75℃のドウ状組成物を成形させ、これを粉砕して顆粒とする工程。
A method for producing a high bulk density granular detergent composition comprising the following steps (I) and (II):
(I). (A) α-sulfo fatty acid alkyl ester and (B) alkaline inorganic powder are mixed in a stirring granulator or a fluidized bed granulator to neutralize α-sulfo fatty acid alkyl ester and α-sulfo fatty acid alkyl. A step of granulating an ester and a neutralized product thereof to obtain α-sulfo fatty acid alkyl ester salt-containing particles.
(II). A step of kneading and kneading the α-sulfo fatty acid alkyl ester salt-containing particles and the detergent component to form a dough-like composition at a temperature of 40 to 75 ° C., and pulverizing it into granules.
(A)成分と(B)成分とのモル比((A):(B))が、1:0.85〜1:20であることを特徴とする請求項1記載の高嵩密度粒状洗剤組成物の製造方法。   2. The high bulk density granular detergent according to claim 1, wherein the molar ratio ((A) :( B)) of the component (A) to the component (B) is 1: 0.85 to 1:20. A method for producing the composition. (B)アルカリ性無機粉体の平均粒径が0.2〜500μmであることを特徴とする請求項1又は2記載の高嵩密度粒状洗剤組成物の製造方法。
(B) The average particle diameter of alkaline inorganic powder is 0.2-500 micrometers, The manufacturing method of the high bulk density granular detergent composition of Claim 1 or 2 characterized by the above-mentioned.
JP2003428891A 2003-12-25 2003-12-25 Method for producing high bulk density granular detergent composition Expired - Fee Related JP4379586B2 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102216262A (en) * 2008-11-21 2011-10-12 狮王株式会社 Method for producing aqueous a-sulfo fatty acid alkyl ester salt solution

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102216262A (en) * 2008-11-21 2011-10-12 狮王株式会社 Method for producing aqueous a-sulfo fatty acid alkyl ester salt solution
CN102216262B (en) * 2008-11-21 2013-11-27 狮王株式会社 Method for producing aqueous alpha-sulfo fatty acid alkyl ester salt solution

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