A delustered thermoplastic resin composition which comprises 100 parts by weight of a thermoplastic resin (B); and 0.1 to 40 parts by weight of a resin (A) which essentially consists of: PA1 80 to 20 parts by weight of a polymer or a copolymer component (I) obtained by polymerizing; PA2 (a) 30 to 100% by weight of at least one monomer selected from the group consisting of an alkyl methacrylate in which the alkyl group has 1 to 4 carbon atoms and an aromatic vinyl compound; PA2 (b) 0 to 70% by weight of an alkyl acrylate in which the alkyl group has 1 to 13 carbon atoms; PA2 (c) 0 to 50% by weight of a monoethylenically unsaturated monomer other than those of (a) and (b); and PA2 (d) 0 to 5 parts by weight of a crosslinking monomer per 100 parts by weight of the total amount of the above components (a), (b), and (c); and PA1 20 to 80 parts by weight of a copolymer component (II) obtained by polymerizing; PA2 (e) 30 to 90% by weight of an aromatic vinyl compound; PA2 (f) 10 to 60% by weight of at least one alkyl acrylate monomer in which the alkyl group has 1 to 13 carbon atoms; PA2 (g) 0 to 20% by weight of a monoethylenically unsaturated monomer other than those of (e) and (f); and PA2 (h) 0.05 to 10 parts by weight of a crosslinking monomer per 100 parts by weight of the total amount of the above components (e), (f) and (g).

BACKGROUND OF THE INVENTION 
1. Field of the Invention 
The present invention relates to a delustered thermoplastic resin 
composition. 
2. Description of the Prior Art 
Molded products of thermoplastic resins such as of vinyl chloride resin and 
ABS resin have luster. Although the luster may serve as an important 
property depending upon the purposes, it is often desired to eliminate the 
luster. 
In order to deluster the thermoplastic resins, it has heretofore been 
attempted to perform the pattern embossing treatment and to perform the 
delustering coating because they do not deteriorate the properties of the 
thermoplastic resins. These methods, however, require clumsy steps as well 
as increased cost, while presenting such a problem that the delustering 
effect does not last long. 
It has also been attempted to add a delustering agent of the inorganic type 
of the high molecular polymer type. This method does not hinder the 
processability and gives the delustering effect which lasts for extended 
periods of time, but gives a serious defect that the properties of the 
resins become inferior. In particular, the inorganic delustering agent 
such as amorphous silica or calcium carbonate, which had been chiefly used 
as the delustering agent of the addition type, causes the physical 
properties of the resins to be worse and can not be practically used. 
On the other hand, when the delustering agent of the high molecular polymer 
type is used, it is possible to diminish a lowering of physical properties 
by using a delustering agent having a better compatibility with the resin. 
However, in such case, the delustering effect is often diminished because 
the compatibility with respect to the thermoplastic resin conflicts the 
delustering efect, and this conflicting nature of the compatibility and 
the delustering effect has prevented the development of excellent 
delustering agent. 
SUMMARY OF THE INVENTION 
The object of the present invention is to provide an excellent delustering 
agent, physical properties of which are not substantially deteriorated and 
which can be commercially produced.

PREFERRED EMBODIMENT OF THE INVENTION 
The present invention deals with a delustering thermoplastic resin 
composition comprising 100 parts by weight of a thermoplastic resin (B) 
blended 
with 0.1 to 40 parts by weight of a mixture (A.sub.1) of a polymer or a 
copolymer (component I) from the below-mentioned monomers (a) to (d) and a 
copolymer (component II) from the below-mentioned monomers (e) to (h), 
with 0.1 to 40 parts by weight of a copolymer (A.sub.2) obtained by 
polymerizing a mixture of the monomers (e) to (h) in the presence of a 
polymer or a copolymer (component I) from the monomers (a) to (d), 
or with 0.1 to 40 parts by weight of a copolymer (A.sub.3) obtained by 
polymerizing the monomer (a) or a mixture of the monomers (a) to (d) in 
the presence of the copolymer (component II) from monomers (e) to (h). 
Monomers for component I: 
______________________________________ 
(a) At least one monomer 
30-100% by weight 
selected from the group 
consisting of an alkyl 
methacrylate in which the 
alkyl group has 1 to 4 
carbon atoms and an aromatic 
vinyl compound 
(b) Alkyl acrylate in 0-70% by weight 
which the alkyl group 
has 1 to 13 carbon 
atoms 
(c) Any other mono- 0-50% by weight 
ethylenically 
unsaturated monomer 
(d) Crosslinking monomer 
0-5 parts by weight 
per 100 parts by 
weight of (a), (b) 
and (c). 
______________________________________ 
Monomers for component II: 
______________________________________ 
(e) Aromatic vinyl monomer 
30-90% by weight 
(f) At least one alkyl 10-60% by weight 
acrylate monomer in 
which the alkyl group 
has 1 to 13 carbon atoms 
(g) Any other monoethyl- 
0-20% by weight 
enically unsaturated 
monomer 
(h) Crosslinking monomer 
0.05-10 parts by 
weight per 100 
parts by weight of 
(e), (f) and (g). 
______________________________________ 
According to the present invention, the polymer or copolymer (component I) 
part from monomers (a) to (d) and the copolymer (component II) part from 
monomers (e) to (h) are essential requirements. When either component I or 
II was used, sufficient delustering effect can not be obtained, of 
insufficient compatibility with the thermoplastic resin (B) causes the 
physical properties of the final product to be seriously deteriorated. The 
ratio of the component (I) to the component (II) should suitably lie from 
80:20 to 20:80 on the basis of weight. 
As explained above, suitable monomers for constituting the component (I) 
include 30 to 100% by weight of alkyl methacrylate in which the alkyl 
group has 1 to 4 carbon atoms and/or aromatic vinyl monomer, 0 to 70% by 
weight of alkyl acrylate in which the alkyl group has 1 to 13 carbon 
atoms, and 0 to 50% by weight of any other monoethylenically unsaturated 
monomer. It is also allowable to use 5 parts by weight or less of a 
crosslinking monomer per 100 parts by weight of the above-mentioned 
monomers. 
The component (I) works to impart compatibility with the thermoplastic 
resin to the delustering agent. This can be accomplished by using at least 
30% by weight of alkyl methacrylate in which the alkyl group has 1 to 4 
carbon atoms and/or an aromatic vinyl monomer as represented by styrene. 
There can also be used a crosslinking monomer. Use of the crosslinking 
monomer in excess amounts, however, causes the compatibility to be 
decreased. Therefore, the crosslinking monomer should be used in a minimum 
amount. 
Suitable monomers for constituting the component (II) include 30 to 90% by 
weight of aromatic vinyl monomer, 10 to 60% by weight of an acrylate and 0 
to 60% by weight of any other monoethylenically unsaturated monomer. 
Further, a crosslinking monomer is used in an amount of 0.05 to 10 parts 
by weight per 100 parts by weight of these monomers. The component (II) is 
essential for delustering. A crosslinked polymer of which the main 
components are aromatic vinyl and acrylate exhibits a particularly 
excellent delustering effect. The component (II) alone, however, is 
insufficient in compatibility with the thermoplastic resin and does not 
help to obtain an excellent delustering agent, unless it is used in 
combination with the component (I). 
Representative examples of the monoethylenically unsaturated monomers which 
can be included in the monomers for the component I or II will be fumaric 
acid, maleic acid and carboxylic acid copolymerizable therewith as well as 
esters thereof, halogenated vinyl compound such as vinyl chloride and 
vinyl bromide, vinyl esters such as vinyl acetate, and acrylonitriles. 
The crosslinking monomer is not essential for the component (I) but is 
essential for the component (II). When the crosslinking monomer is not 
used in the component (II), sufficient delustering effect is not obtained. 
Any crosslinking monomer may be used such as ordinarily employed 
polyfunctional monomer, e.g., polyvinylbenzenes and esters of unsaturated 
carboxylic acid. Particularly preferred examples will be allyl compounds 
such as allyl methacrylate, triallyl cyanurate, triallyl isocyanurate, and 
the like. 
A mixture (A.sub.1) of the polymer or copolymer component (I) and the 
copolymer component (II), a copolymer (A.sub.2) formed by polymerizing a 
mixture of the monomers for the component (II) in the presence of the 
component (I), and a copolymer (A.sub.3) formed by polymerizing the 
monomer (a) or a mixture of monomers (a) to (d) for the component (I) in 
the presence of the copolymer component (II), can be obtained by using the 
emulsion polymerization, multistage emulsion polymerization, or by using 
the emulsion suspension polymerization in which the emulsion 
polymerization is effected in the first stage and the thus formed latex is 
once softly coagulated and is then subjected to the suspension 
polymerization by adding monomers in the second stage. The polymerization 
method, however, need not necessarily be limited thereto. 
In particular, when the resin obtained by the emulsion polymerization is 
added to a plasticized vinyl chloride resin or the like, excellent 
dispersibility is exhibited as compared with other resins that are formed 
by other polymerization methods such as suspension polymerization. 
When the resin A (A.sub.1, A.sub.2 or A.sub.3) is to be obtained by the 
emulsion polymerization, it has preferably an average particle size of 
greater than 0.1.mu. and, particularly greater tna 0.3.mu. to produce 
increased effect of delustering. Namely, greater particle size is 
preferred so far as the stability of the formed latex is not deteriorated. 
In carrying out the polymerization to obtain the resin, it is allowable to 
use a polymerization regulator such as n-octyl mercaptan or t-dodecyl 
mercaptan. In many cases, it is often preferable to adjust the 
distribution of the molecular weight by using such a polymerization 
regulator. 
Representative examples of the thermoplastic resin which exhibits the 
delustering effect when blended with the resin (A.sub.1), the resin 
(A.sub.2) or the resin (A.sub.3), include vinyl chloride resin, ABS resin, 
(meth)acrylic resin, methyl methacrylate/butadiene/styrene resin (MBS 
resin), nylon, polyethylene, polycarbonate, polyethylene terephthalate, 
and the like. 
The delustering agent will be blended into the thermoplastic resin in an 
amount of 40 parts by weight or less per 100 parts by weight of the 
thermoplastic resin. The delustering effect, however, can be sufficiently 
exhibited even when the delustering agent is blended in an amount of 10 
parts by weight or less. 
In addition, by blending such a delustering agent into the thermoplastic 
resin, the surface of the molded article obtained from the blend is 
necessarily rough and, as the result, blocking between molded articles is 
often prevented. Such an anti-blocking effect is notable in case of 
plasticized or semirigid polyvinylchloride. 
As required, the composition of the present invention can be blended with 
general additives such as stabilizers, lubricants, processing aids, impact 
resistance aids, plasticizers, foaming agents, fillers, coloring agents, 
and the like. 
In the following examples, parts and % are all by weight. 
EXAMPLE 1 
(1) Preparation of the component (I) 
250 Parts of water, monomers in parts shown in Table 1, 1 part of sodium 
N-lauroyl sarcosinate and 0.3 part of potassium persulfate were fed into a 
reaction vessel equipped with a stirrer, a reflux condenser and an opening 
for introducing nitrogen gas. After the interior of the vessel was 
sufficiently substituted with nitrogen gas, the above-mentioned components 
were heated at 70.degree. C. for 4 hours to polymerize the monomers with 
stirring to obtain latexes having a polymerization rate of about 96%. 
TABLE 1 
______________________________________ 
Monomer (I)-1 (I)-2 (I)-3 (I)-4 
(I)'-1 
______________________________________ 
Methyl methacrylate 
100 80 80 0 20 
Butyl acrylate 
0 20 20 40 80 
Styrene 0 0 0 60 0 
Allyl methacrylate 
0 0 0.5 0 0 
______________________________________ 
Measurement by the light transmission method indicated that particles in 
the latexes of (I)-1 to (I)-4 possessed particle diameters of 0.3 to 0.4 
micron. The latexes were salted out by the addition of 5 parts of calcium 
chloride, and were further dehydrated, washed with water and were dried to 
obtain powdery polymers. 
In the case of (I)'-1, on the other hand, the resulting product exhibited a 
rubbery state. 
(2) Preparation of the component (II) 
250 Parts of water, monomers in parts shown in Table 2, 1 part of sodium 
N-lauroyl sarcosinate and 0.2 part of benzoyl peroxide were fed into the 
same reaction vessel as used in the preparation of the component (I). 
After the interior of the vessel was sufficiently substituted with 
nitrogen gas, the above-mentioned components were heated at 75.degree. C. 
for 5 hours to polymerize the monomers with stirring to obtain latexes 
having a polymerization rate of 95%. 
TABLE 2 
__________________________________________________________________________ 
(II)-1 
(II)-2 
(II)-3 
(II)-4 
(II)'-1 
(II)'-2 
(II)'-3 
__________________________________________________________________________ 
Styrene 60 70 61 61 60 100 20 
Ethyl acrylate 
40 0 20 0 40 0 40 
Butyl acrylate 
0 30 0 20 0 0 0 
Methyl methacrylate 
0 0 19 0 0 0 0 
Acrylonitrile 
0 0 0 19 0 0 40 
Triallyl cyanurate 
2 2 2 2 0 2 2 
__________________________________________________________________________ 
Measurement by the light transmission method indicated that particles in 
the thus obtained latexes possessed particle diameters of 0.3 to 0.4.mu.. 
Powdery crosslinked polymers were obtained from the above latexes through 
the same procedure as employed for the preparation of the component (I). 
(3) Preparation of the resin (A.sub.1) 
Polymers (I)-1 to (I)-4 and polymers (II)-1 to (II)-4 or (II)'-1 to (II)'-3 
were mixed together at ratios shown in Table 3 to prepare the resins 
(A.sub.1). The resins (A.sub.1) were added each in an amount of 7 parts to 
100 parts of the blend (1) of thermoplastic resin (B) with several 
additives, and composition of said blend (1) will be mentioned below. The 
mixture was kneaded by a roll at 165.degree. C. to obtain a sheet. The 
sheet was measured for its 60.degree. specular gloss. Further, several 
pieces of the sheet were superposed and were compression-molded at 
165.degree. C. under a pressure of 40 kg/cm.sup.2, to prepare a board 5 mm 
in thickness. The board was measured for its V-notched Charpy impact 
strength. The measured results were as shown in Table 3. 
Table 3 also illustrates the measured results when no delustering agent was 
added, when a silica gel was added as a representative example of the 
inorganic delustering agent, and when a commercially available high 
molecular delustering agent was added. 
As will be obvious from Table 3, the compositions of the present invention 
exhibit superior delustering property and impact resistance to the 
compositions of comparative examples. 
TABLE 3 
__________________________________________________________________________ 
60.degree. 
Charpy 
Specular 
impact 
Resin gloss 
strength 
blended 
(I)-1 
(I)-2 
(I)-3 
(I)-4 
(II)-1 
(II)-2 
(II)-3 
(II)-4 
(II)'-1 
(II)'-2 
(II)'-3 
(%) (kg-cm/cm.sup.2) 
Remarks 
__________________________________________________________________________ 
Resin 
50 50 23 15.9 Present 
(A.sub.1)-1 invention 
Resin 50 50 28 17.2 Present 
(A.sub.1)-2 invention 
Resin 50 50 24 15.1 Present 
(A.sub.1)-3 invention 
Resin 50 50 27 16.3 Present 
(A.sub.1)-4 invention 
Resin 50 50 31 17.5 Present 
(A.sub.1)-5 invention 
Resin 50 50 24 16.8 Present 
(A.sub.1)-6 invention 
Resin 50 50 26 16.5 Present 
(A.sub.1)-7 invention 
Resin 70 30 35 18.6 Present 
(A.sub.1)-8 invention 
Resin 30 70 21 14.5 Present 
(A.sub.1)-9 invention 
Resin 50 50 65 18.9 Compara- 
(A.sub.1 )'-1 50 tive 
example 
Resin 50 Poorly 
8.9 Compara- 
(A.sub.1)'-2 dispersed tive 
example 
Resin 50 50 Poorly 
8.2 Compara- 
(A.sub.1)'-3 dispersed tive 
example 
Resin 100 75 20.5 Compara- 
(A.sub.1)'-4 tive 
example 
Resin 100 Poorly 
7.8 Compara- 
(A.sub.1)'-5 dispersed tive 
example 
Resin 
Silica gel 46 0.8 Compara- 
(A.sub.1)'-6 tive 
example 
Resin 
Commercially available delustering agent 
40 10.5 Compara- 
(A.sub.1)'-7 tive 
example 
Resin 
None 81 20.9 Compara- 
(A.sub.1)'-8 tive 
example 
__________________________________________________________________________ 
______________________________________ 
Composition of blend (1): 
______________________________________ 
Vinyl chloride resin (--P= 700) 
100 parts 
Stabilizer (dibutyltin maleate) 
3 parts 
Impact resistance aid 10 parts 
(Metablen .RTM. C-102, Mitsubishi Rayon Co.) 
Processing aid (Metablen .RTM. P-551, 
1 part 
Mitsubishi Rayon Co.) 
Lubricant (butyl stearate) 
1 part 
______________________________________ 
EXAMPLE 2 
250 Parts of water, monomers of the first stage in parts as shown in Table 
4, 1 part of sodium N-lauroyl sarcosinate and 0.3 part of potassium 
persulfate were introduced into the same reaction vessel as used for the 
preparation of the component (I) of Example 1. After the interior of the 
vessel was sufficiently substituted with nitrogen, the above-mentioned 
components were heated at 75.degree. C. for 2 hours to polymerize the 
monomers with stirring. Thereafter, monomers of the second stage and 
polymerization regulator in parts as shown in Table 4 and 0.2 part of 
benzoyl peroxide were introduced into the vessel to perform the 
polymerization for 5 hours. Latexes were obtained having a polymerization 
rate of 96% and an average particle size of 0.35.mu.. 
The resins (A.sub.2) and (A.sub.3) were obtained from the thus prepared 
latexes in the same manner as the preparation of the component (I) of 
Example 1. Further, the resin (A.sub.2) or (A.sub.3) was added each in an 
amount of 7 parts to 100 parts of the blend (1). The 60.degree. specular 
gloss and Charpy impact strength of the resulting compositions were 
measured in the same manner as in Example 1. The results were as shown in 
Table 4. 
The compositions of the present invention exhibit excellent delustering 
property and impact resistance over the compositions of comparative 
examples. 
TABLE 4 
__________________________________________________________________________ 
First-stage Second-stage 
monomer monomer 
Methyl Allyl Methyl Allyl 
methac- 
Butyl 
Ethyl methac- Ethyl 
Butyl 
methac- 
Acryloni- 
methac- 
rylate 
acrylate 
acrylate 
Styrene 
rylate 
Styrene 
acrylate 
acrylate 
rylate 
trile rylate 
__________________________________________________________________________ 
Resin (A.sub.2)-1 
27 3 42 28 2 
Resin (A.sub.2)-2 
45 5 30 20 1.5 
Resin (A.sub.2)-3 
40 10 31 10 9 2 
Resin (A.sub.2)-4 
48 12 25 8 7 2 
Resin (A.sub.3)-1 
28 42 2 3 27 
Resin (A.sub.3)-2 
9 10 31 1 10 40 0.5 
Resin (A.sub.3)-3 
9 10 31 2 30 20 
Resin (A.sub.2)'-1 
10 40 30 20 2 
Resin (A.sub.2)'-2 
45 5 30 20 0 
Resin (A.sub.2)'-3 
40 10 10 20 20 2 
Resin (A.sub.3)'-1 
20 20 10 2 5 45 
__________________________________________________________________________ 
60.degree. 
Charpy 
P.R. Specular 
impact 
t-dodecyl 
gloss 
strength 
mercaptan 
% (kg-cm/cm.sup.2) 
Remarks 
__________________________________________________________________________ 
Resin (A.sub.2)-1 
0.05 27 17.5 Present 
invention 
Resin (A.sub.2)-2 
25 17.3 Present 
invention 
Resin (A.sub.2)-3 
23 16.5 Present 
invention 
Resin (A.sub.2)-4 
0.03 24 16.7 Present 
invention 
Resin (A.sub.3)-1 
28 16.8 Present 
invention 
Resin (A.sub.3)-2 
0.07 21 15.9 Present 
invention 
Resin (A.sub.3)-3 
26 16.3 Present 
invention 
Resin (A.sub.2)'-1 
62 19.1 Comparative 
Example 
Resin (A.sub.2)'-2 
71 20.3 Comparative 
Example 
Resin (A.sub.2)'-3 
Poorly 
7.7 Comparative 
dispersed Example 
Resin (A.sub.3)'-1 
Poorly 
9.5 Comparative 
dispersed Example 
__________________________________________________________________________ 
P.R.: Polymerization regulator 
EXAMPLE 3 
250 Parts of water, 0.15 part of sodium N-lauroyl sarcosinate and 0.2 part 
of sodium formaldehyde sulfoxylate were fed into a reaction vessel 
equipped with a stirrer and a reflux condenser. 
After the interior of the vessel was sufficiently substituted with 
nitrogen, the above-mentioned components were heated to 75.degree. C. with 
stirring. 
Then, the monomer mixture of the first stage in parts as shown in Table 5 
and cumene hydroperoxide (0.1 part per 100 parts of monomers) was added to 
the reaction vessel over a period of 60 minutes and the reaction vessel 
was further agitated for 60 minutes to complete the first stage 
polymerization. 
Before introducing the second stage monomers, the mixture of 10 parts of 
water, 0.6 part of sodium N-lauroyl sarcosinate and 0.1 part of sodium 
formaldehyde sulfoxylate was added to the vessel, and then the monomer 
mixture of the first stage in parts as shown in Table 5 which was 
contained 0.2% of cumene hydroperoxide was added to the vessel over a 
period of 120 minutes and the vessel was further agitated for 180 minutes 
to complete the second stage polymerization. 
The latex having a polymerization rate of 96% and an average particle 
diameter of about 0.5.mu. was obtained. 
The latex was salted out by the addition of 5 parts of calcium chloride, 
and was further dehydrated, washed with water and was dried to obtain 
powdery polymer. 
Further, the resin (A2) was blended in an amount of 7 parts to 100 parts of 
the blend (1'), and the obtained mixture was extrusion-molded to prepare a 
film 100.mu. in thickness. 
The 60.degree. specular glosses of the films are shown in Table 5. 
______________________________________ 
Composition of blend (1): 
______________________________________ 
Vinyl chloride resin (--P= 700) 
100 parts 
Dibutyltin maleate 3 parts 
Impact resistance aid 10 parts 
(Metablen .RTM. C-102) 
Processing aid 1 part.sup. 
(Metablen .RTM. P-551) 
Lubricant 1.5 parts 
______________________________________ 
TABLE 5 
__________________________________________________________________________ 
First-stage monomer Second-stage monomer 
60.degree. 
Methyl Specular 
methacry- 
Butyl acry- 
Ethyl Butyl 
Allyl gloss 
late late acrylate 
Styrene 
Ethyl acrylate 
acrylate 
acrylate 
(%) 
__________________________________________________________________________ 
Resin (A.sub.2)-5 
27 3 42 28 0.7 19 
Resin (A.sub.2)-6 
40 10 30 20 1.0 23 
Resin (A.sub.2)-7 
40 10 30 10 10 1.5 27 
__________________________________________________________________________ 
EXAMPLE 4 
125 Parts of water, monomers of the first stage in parts as shown in Table 
6, 0.2 part of benzoyl peroxide and 2 parts of sodium N-lauroyl 
sarcosinate were introduced to the same reaction vessel as used in Example 
1. After the interior of the vessel has been sufficiently flushed with 
nitrogen, the above-mentioned components were heated at 75.degree. C. to 
polymerize monomers until the polymerization rate reached 95%. 
After the polymerization of the first stage was finished, sulfuric acid was 
added in small amounts so that the latexes once assumed the creamy state. 
Thereafter, 125 parts of water, monomers of the second stage in parts as 
shown in Table 6, 1 part of polyvinyl alcohol, 1 part of lauroyl peroxide 
and 0.03 part of n-octyl mercaptan, were added to effect the suspension 
polymerization at 80.degree. C. for 2 hours with stirring, followed by the 
heat treatment at 120.degree. C. for 30 minutes to complete the 
polymerization, and further followed by the dehydration and drying to 
obtain granular polymer resins (A.sub.2) and (A.sub.3). The thus obtained 
resin (A.sub.2) or (A.sub.3) was added in an amount of 7 parts to 100 
parts of the blend (1) of the thermoplastic resin (B), in order to measure 
the 60.degree. C. specular gloss and Charpy impact strength of the 
compositions in the same manner as in Example 1. The results were as shown 
in Table 6. 
The compositions of the present invention exhibited excellent delustering 
property and impact resistance. 
TABLE 6 
__________________________________________________________________________ 
First-stage monomer 
Second-stage monomer 60.degree. 
Charpy 
Methyl Allyl Methyl Allyl 
Specular 
impact 
meth- 
Butyl 
Ethyl 
Sty- 
methy- 
methy- 
Ethyl meth- 
gloss 
strength 
acrylate 
acrylate 
acrylate 
rene 
acrylate 
acrylate 
acrylate 
Styrene 
acrylate 
(%) (kg-cm/cm.sup.2) 
__________________________________________________________________________ 
Resin (A.sub.2)-8 
54 6 16 24 1 22 16.5 
Resin (A.sub.3)-4 
7 8 25 1.5 54 6 25 17.8 
Resin (A.sub.3)-5 
24 36 2 40 24 17.2 
__________________________________________________________________________ 
EXAMPLE 5 
5 Parts of resins (A.sub.1), (A.sub.2) and (A.sub.3) shown in Table 7, and 
5 parts of silica gel or a commercially available delustering agent were 
blended to the blend (2) of thermoplastic resin (B) with several additives 
(composition of said blend (2) will be mentioned below), and were kneaded 
by a roll heated at 155.degree. C. to obtain sheets. The sheets were 
measured for their 60.degree. specular gloss. The results were as shown in 
Table 7. From Table 7, it will be understood that the compositions of the 
present invention exhibit superior delustering effect to the compositions 
of comparative examples. 
______________________________________ 
Composition of blend (2): 
______________________________________ 
Vinyl chloride resin (--P= 1100) 
100 parts 
Plasticizer (dioctyl phthalate) 
50 parts 
Cd--Ba type stabilizer 2.5 parts 
Stearic acid 0.3 part.sup. 
______________________________________ 
TABLE 7 
______________________________________ 
60.degree. 
Specular 
Uniformity of 
gloss (%) 
dispersion Remarks 
______________________________________ 
Resin (A.sub.1)-2 
36 G Present 
Invention 
Resin (A.sub.2)-2 
31 G Present 
Invention 
Resin (A.sub.3)-1 
33 G Present 
Invention 
Resin (A.sub.3)-2 
28 G Present 
Invention 
Silica gel is used 
52 P Comparative 
Examples 
Commercially available 
44 P Comparative 
delustering agent is used Examples 
No delustering agent 
87 -- Comparative 
is used. Examples 
______________________________________ 
G: Good, P: Poor 
EXAMPLE 6 
8 Parts of a resin (A.sub.1), (A.sub.2) and (A.sub.3) shown in Table 8 or a 
commercially available delustering agent was added to 100 parts of an ABS 
resin (Diapet.RTM. 3001, a product of Mitsubishi Rayon Co.) and was 
sufficiently mixed using a Henschel mixer. The mixture was extruded by an 
extruder hving a screw 40 mm in diameter at a temperature of 230.degree. 
C., and was cut to prepare pellets. The pellets were dried and were 
injection-molded at 200.degree. C. to prepare a board 3 mm in thickness, 
to measure the 60.degree. specular gloss and the V-notched Izod impact 
strength. The results were as shown in Table 8. 
The compositions of the present invention exhibit excellent delustering 
property and impact strength over the compositions of comparative 
examples. 
TABLE 8 
______________________________________ 
60.degree. 
Izod impact 
Specular 
strength 
gloss (%) 
(kg-cm/cm.sup.2) 
Remarks 
______________________________________ 
Resin (A.sub.1)-2 
35 19.5 Present 
Invention 
Resin (A.sub.2)-2 
38 20.4 Present 
Invention 
Resin (A.sub.3)-1 
29 19.7 Present 
Invention 
Resin (A.sub.3)-2 
34 21.5 Present 
Invention 
Commercially available 
81 6.2 Comparative 
delustering agent is used Examples 
No delustering agent 
95 23.4 Comparative 
is used. Examples 
______________________________________