JPS6131754B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to the processing of soap feedstocks to introduce volatile components, such as perfumes.

When processing soap feedstocks it is usually necessary to introduce perfumes to impart fragrance to the product. For some products it may also be desirable to incorporate other types of volatile substances, such as solvents during processing. Mixing efficiency depends on processing temperature, time,
and will depend on a number of factors, including the flow path to the atmosphere.

cavity transfer mixer
has been found to provide an effective means for incorporation because processing temperatures are generally maintained lower than those normally encountered in soap processing. Processing times are short and incorporation takes place in an enclosed melt. The energy required will usually be lower than that required by conventional methods.

The present invention uses a device of the type of recessed displacement mixer to introduce the volatile components into the soap base. These devices include two closely spaced mutually displaceable surfaces, each having a pattern of recesses, so that as the surfaces move, the pattern patterns overlap so that the material passing between the surfaces is Alternately tracing small diameters through the recesses therein, the bulk material passes through shear zones in the material caused by the displacement of the surface.

Recessed moving mixers are usually made in a cylindrical shape,
And in a preferred arrangement for this method, the recesses are always utilized but arranged so that the path through which the two surfaces pass relative to one another varies.
The device having a cylindrical shape includes a stator in which a rotor is provided; opposing surfaces of the stator and rotor have recesses through which the material passes as it passes through the device.

The processing temperature is preferably about 30° to about 55°C, more preferably about 40°C or less.

The device may also have a planar shape, in which the opposing flat surfaces having a pattern of recesses are
For example, they may be moved relative to each other by rotation of one plane, so that the material introduced between the surfaces moves forward at the point of rotation and alternately moves between recesses on each surface. Dew.

Another type of cylindrical shape is that the outer cylinder rotates but the inner cylinder remains stationary. The central stator is more easily cooled or heated if desired, since the liquid connections are made in a simple way; the outer rotor can also be cooled or heated in a simple way. can. It is mechanically easier to apply rotational energy to the outer body than to the inner cylinder. This configuration therefore has advantages in construction and use.

As the rotor rotates, the material is forced into the mixer using auxiliary equipment. Examples of auxiliary equipment are screw extruders and piston rams. The auxiliary equipment is preferably operated separately from the mixer, so that the throughput and the work performed thereon can be independently varied. The separation operation can be accomplished by positioning the auxiliary equipment to feed the material for processing at an angle to the centerline of the shear generating equipment. This arrangement makes it possible to supply rotational energy to a device that generates shear forces about its centerline. Series arrangement can be more easily achieved if the outer member of the device is a rotor. Separate operations and auxiliary equipment on the equipment help adjust to processing.

Generally, various recess shapes can be used, for example Metal Box (U.S. Pat.
No. 930339) is a longitudinal slot on two surfaces.
Disclose. The stator and rotor can have, for example, from 6 to 12 grooves spaced around their outer edges and extending along their entire length.

Preferably one or both surfaces are subject to thermal conditioning. This method makes it possible to achieve effective heating/cooling of the material.

The detergent feedstock can contain non-soap detergents in amounts that do not interfere with the desired effect. Examples of these active substances are alkanesulfonates, alcohol sulfates, alkylbenzenesulfonates, alkyl sulfates, acyl isethionates, olefinsulfonates and ethoxylated alcohols.

The processed feedstock was formed into rods using a standard die press. Other product shapes can be made from extruded noodle and bead feedstocks, for example.

Embodiments of the apparatus will now be described with reference to the accompanying drawings.

A recessed moving mixer is shown in longitudinal section in FIG. It comprises a hollow cylindrical stator member 1 and a cylindrical rotor 2 having journals with a sliding fit within the stator for rotation, the opposing surfaces of the rotor and stator being parallel to each other. , having a number of rows of recesses extending around the periphery, where: (a) rows of adjacent recesses on the stator are staggered over the periphery; (b) rows of adjacent recesses on the stator are staggered over the periphery; and (c) the rows of recesses on the stator and rotor are axially offset.

The pattern of recesses on the stator 3 and rotor 4 is illustrated on FIG. Recesses 3 on the stator are shown with diagonal lines. The overlap between the mold patterns of cavities 3, 4 is also shown in FIG. Liquid jacket 1A is provided for applying temperature control by the passage of heating or cooling water. A temperature regulating conduit 2A is provided within the rotor.

Material passing through the device passes through recesses on opposite sides of the stator and rotor alternately. These immediate recesses shown in cross-section are shown in dotted outline on FIG. 1 to show the repeating mold pattern.

The material flow is split between a pair of adjacent cavities on the same rotor or stator because the positions of the cavities on opposite stator or rotor faces overlap.

The entire or bulk flow of material is significantly influenced during passage through the shear zone caused by the relative displacement of the stator and rotor surfaces. The material is entrained into each cavity for a short time during its passage and in this way one of its velocity components is changed.

The mixer had a 2.54 cm radius rotor with 36 hemispherical recesses (0.9 cm radius) arranged in 6 rows of 6 recesses. The inner surface of the stator had seven rows of six recesses to provide overlap of the recesses at the inlet and outlet.
The material to be acted upon was injected into the device during operation with a screw extruder through a groove 5 leading to the annular area between rotor and stator. The material left the device through nozzle 6.

FIG. 4 shows a rectangular arrangement of elongated recesses; these recesses have the cross-sectional contour of FIG. These cavities align their longitudinal axes parallel to the longitudinal axis of the device and in the direction of material progression through the device; the latter is indicated by an arrow.

FIG. 5 shows a cavity pattern having the dimensions and contours shown in FIGS. 1, 2 and 3. FIG. The cavities of FIG. 5 are arranged in a square pattern with closely spaced flow spacing of adjacent recesses on the same surface. This pattern does not provide as much overlap as that provided by the pattern of FIG. The latter has a hexagonal pattern of six recesses, each closely spaced on the same surface.

FIG. 6 is a cross-sectional view of a recessed displacement mixer having a rotor 7 rotatably positioned in a hollow stator 8 having an effective length of 10.7 cm and a diameter of 2.54 cm. The rotor has five parallel grooves 9 of semi-circular cross-section (5 mm diameter) spaced equidistantly around its outer edge and extending parallel to the longitudinal axis along the length of the rotor. The inner cylindrical surface of the stator 8 has eight similarly sized grooves 10 extending along its length and parallel to the longitudinal axis. This embodiment utilizes recesses that extend unobstructed along the stator and rotor. Temperature control jackets and conduits were present.

Figure 7 shows a pattern of recesses in which the cavities on the rotor (which is shown with diagonal lines) and on the stator have larger dimensions perpendicular to the flow of material; the flow is indicated by arrows. shown. The recess is elongated like this. This embodiment provides a lower pressure drop over its length compared to a device of similar shape but without a recess that is vertical in its long dimension, ie, located perpendicular to the flow of material. In order to obtain a reduction in pressure drop, at least one of the surfaces must have an elongated recess with a long dimension perpendicular to the flow of material.

The concave moving mixer in FIG. 8 has a central shaft 12.
an outer cylinder 11 provided for rotation around
It had A temperature regulating jacket 13 and conduits were present but the latter are not shown since the recess on the central shaft is shown in plan view while the rotor has been cut away. The central stator (diameter 52 mm) had three rows 14 of three recesses with partial or half recesses at the inlet and outlet locations. There were four rows 15 of three recesses on the rotor. The recesses on the stator and rotor are elongated and have a total arc dimension of 5.1 cm perpendicular to the material flow and have hemispherical cross-sectional ends of 1.2 cm radius joined by semicircularly cut panels of the same radius. have The recesses were aligned as in the mold pattern of FIG. 7, i.e. with its long dimension perpendicular to the material flow, and the rotor was driven by chain transmission to the external gear 16.

An example of the method of the invention will now be given.

EXAMPLE The mixer used the recess pattern of Figure 3 and had a stator radius of 2.54 cm with 36 hemispherical recesses (0.9 cm radius) arranged in 6 rows of 6 recesses. The interior surface of the stator had seven rows of six recesses to provide overlapping recesses at the inlet and outlet.

Tallow/coconut superfat feedstock (60/40/7
1/2). 2-phenylethanol (1.0%) was added to the substrate in a ribbon mixer to coat the noodles with this volatile material. The substrate was divided and the first half was processed in a recess moving mixer with the aid of a soap extruder and the second half was processed conventionally. Tablets were punched and analyzed by fill volume gas chromatography. The results showed that the loss of volatile components was less with the recessed moving mixer means.

EXAMPLE A tallow/coconut (80/20) soap with a glycerol content of 1.25% was used as the base material. Limonene (1.5% on base) was added to soap samples in chip form and processed as usual.

A second sample was mixed with the same amount of limonene and passed through the apparatus of FIG. 1, which had six 2.4 cm diameter depressions arranged in one outer circle. The stator is 4
The rotor had three full cavities and two half cavities at each end.
The temperature of the soap was 25°C at the inlet and 35°C at the outlet with cooling applied to the stator and rotor. The throughput from the soap extruder was 400 grams per minute with the rotor running at 35 revolutions per minute.

Analysis of the filling voids using a gas chromatograph revealed that the soap that had been processed in the usual way contained the proper fragrance.
It was found that 60% retention and the soap mixed according to the invention retained 75%.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal cross-sectional view of a recessed moving mixer having a cylindrical shape; FIG. 2 is a cross-sectional view taken along the - line in FIG. 1; FIG. 3 is a recessed portion in the apparatus of FIG. Figures 4, 5 and 7 illustrate other mold patterns of recesses; Figure 6 is a cross-sectional view through the mixer with grooves in the opposing surfaces of the device; FIG. 8 is a longitudinal sectional view of a recessed moving mixer in which the outer cylinder forms a rotor.

Claims (1)

[Claims] 1. A method for introducing volatile substances into a soap-containing detergent material, each having a pattern of overlapping recesses during movement of the surface and being relatively displaceable at close intervals. Passing the above materials in a mixture between two surfaces, whereby the material transferred between the surfaces alternately traces a small diameter through the recesses in each surface, whereby most of the material is caused by the displacement of the surfaces. The above method of mixing the soap-containing material and the volatile substance by passing through a shear zone in the resulting material. 2. The method according to claim 1, wherein the two surfaces have a cylindrical shape. 3. A method according to claim 1 or 2, wherein the thermal modulation is applied to at least one surface. 4. A method according to any one of claims 1 to 3, wherein the recesses in at least one surface are elongated and have their dimensions perpendicular to the flow of material. 5. A method according to any of claims 1 to 4, wherein the temperature of the soap-containing formulation during processing ranges from about 30°C to about 55°C. 6 Claim 1 in which the volatile substance is a fragrance
The method described in any of the sections from to Section 5.