JPS58208331A - Polyolefin composition for highly expanded foam - Google Patents

Abstract

PURPOSE:To provide the titled polyolefin compsn. which gives a highly expanded molding having a homogeneous cell structure and excellent appearance, by blending an org. volatile blowing agent and a polyoxyethylene/polyoxypropylene block copolymer. CONSTITUTION:A polyoxyethylene/polyoxypropylene block copolymer of the formula (wherein l, m, n are each an integer of 1 or greater) is used. 5-80pts.wt. volatile blowing agent such as a mixture of dichlorotetrafluoroethane and methyl chloride, and 0.05-15pts.wt. said block copolymer are blended with 100pts.wt. polyolefin, pref. high-density polyethylene having an HMI of 30g/10min or below and a swell value of 30g/10cm or below.

Description

[Detailed description of the invention]

The present invention relates to a polyolefin composition for high foaming, and more particularly to a polyolefin composition for high foaming consisting of a polyolefin, a volatile organic blowing agent, and a polyogia ethylene-polyoschizolobylene block polymer having a ship's block structure. It is about things. It is known that a polyolefin foam molded product can be obtained by adding a volatile organic foaming agent to a non-crosslinked polyolefin and foaming it by extrusion. It is widely used as cushioning material, packaging material, etc. However, in general, polyolefins have low viscoelasticity when melted under heat and cannot maintain the gas pressure of the blowing agent for 1 minute. (Because it generates heat, the cell cannot be cooled and solidified smoothly, and since the foaming agent has a high permeability to burn the residue, it tends to volatilize when the foaming agent vaporizes, resulting in insufficient foaming.) However, it is difficult to obtain a highly foamed material with a homogeneous cell structure and good appearance.For example, the methods proposed so far (Patent No. 11j (
15-4341), the foaming conditions that allow for high foaming are limited to a very narrow range, and it is difficult to control these foaming conditions over a long period of time, and special equipment is required. However, it cannot be said that it is necessarily a satisfactory method for industrial implementation. To solve these problems, in order to make polyolenoin into a highly foamed molded product with a foaming rate of about 5 times or more, polyolefino is first treated with peroxide or radiation to crosslink it, and then this is foam-molded. However, this method requires a special process for crosslinking, which inevitably increases the cost of the product. On the other hand, polyethylene with a high degree of crystallinity, such as high-density polyethylene, has a large change in viscoelastic properties near the -C melting point compared to low-density polyethylene, so the extrusion temperature range is significantly restricted, especially when it comes to thickness. It becomes even more difficult to maintain proper condition control for continuous extrusion molding for certain foams.1 - Still, high density polyethylene has a higher degree of crystallinity than low density polyethylene; The heating edge during crystallization is large, and assimilation of the cells during cooling is further hindered, resulting in destruction and deformation of cell 11, resulting in extrusion b.
1,'t+-c, which causes a decrease in Q-formity and deterioration of product quality.
In general, the thicker the foam, the more heat is accumulated during crystallization, making it more difficult for the cells to cool and solidify smoothly, so this tendency becomes more severe. moreover,
While low-density polyethylene has long chain branches and high melt viscoelasticity, high-density polyethylene has long chain branches and has low melt viscoelasticity. However, the cells that had already formed in the die were destroyed by the heat and shear force during the extrusion foaming process, and the foam resulting in quality deterioration. Therefore, as the cross-sectional area of the die opening becomes larger,
That is, it tends to increase as the thickness of the foam increases. To solve this problem, it is possible to increase the resin pressure by increasing the extrusion area, but in order to completely eliminate the negative effects of bubble formation within the die, it is necessary to extrude at a significantly higher rate. Very special equipment with extrusion capacity must be used, and if the number of small extruder rods is increased excessively, it will cause flow disturbances such as melt fracturing, which will reduce extrusion formability, so it is not practical. In this way, all of the methods known so far for producing high-quality, highly foamed molded products using polyethylene as a raw material are not necessarily commercially practicable methods. It could not be said to be satisfactory. The present inventors have conducted intensive research to obtain highly foamed molded products with excellent appearance and homogeneous cell structure using non-crosslinked polyethylene, particularly high-density polyethylene, as a raw material. It has been discovered that the first objective can be achieved by using a polyoxyethylene-polyoquinopropylene block polymer having a block structure of 1, and based on this knowledge, the present invention has been completed. “In other words, the present invention provides (a) a polyolefin, (b) a volatile foam cutter, and (c) a general formula (%) (in which t, m, and n are integers of 1 or more). The present invention provides a highly foamable polyolefin composition comprising a compound comprising a polyolefin compound having the following general formula (1). It is obtained by addition polymerizing ethylene oxide to both ends of the polypropylene dalicol obtained by polymerization.The mixing ratio of this compound is 0.05 to 15% per 100 parts by weight of polyolefin.
The range of the heavy weight part is desirable, preferably in the range of 0.1-10 parts by weight, and if it is less than 0.05 weight part, it is difficult to obtain the desired effect, and if it exceeds 15 weight parts, the amount is Even if the ratio is increased, the effect will not increase and it will not only become uneconomical, but also the plasticizing effect on the resin will become highly fragile, leading to deterioration of the quality of the foam. As a method for preparing the composition of the present invention can be made using any method commonly used for the production of compositions, but especially
'(Master bunch (1) θ that is stranded in the base resin) or the dry pre-nod method is suitable. As the (a) parabolic polyolefin used in the composition of the present invention, for example, polyethylene, polypropylene, polybutylene 7 -1. 1.2-polybutadiene, Ethylene-
Copolymers of ethylene and unsaturated carboxylic acids, such as ethyl acrylate copolymers, ethylene-vinyl chloride copolymers, zinc or sodium salts of ethylene-based ionomers (ethylene/-acrylic It co), Examples include copolymers whose main component is ethylene (metal salts), etc.
Among these, this '1 butt is 0, 98 (1? / c
The high-density polyethylene of d( below) is preferable, especially j(
1: HM 30r/10 minutes or more) and swell value 3
High-density polyethylene of less than 0 L/l O cm is preferred. In the composition of the present invention, these polyethylenes may be used alone or in combination, and these polyolefins may be used as the main component, and other resins may be used as appropriate. It is also possible to mix it with III. Volatile organic blowing agents that can be used as ingredients in the compositions of the present invention include, for example, charcoal, arsenide, logogenated hydrocarbon, and specific examples of these hydrocarbons include propane, methane, and pentane. , be/thene, hexane, etc. Specific examples of halogenated hydrocarbons include methyl chloride, dichloride, methane, trichloromonofluoroethane (abbreviated;; R-tt
, iting times), /chlorofluoromethane (R-12)
, monochlorodifluoromethane (R-13), dichloromonofluoromethane 7 (R-21), monochlorodifluoromethane (R-22), 1,1.2-trichlorotrifluoroethane (R-113), 1,2- Examples include dichlorotetrafluoroethane (R-114) and monochloropentafluoroethane (R-115). Among these, the preferred blowing agent is a mixed blowing agent consisting of 1.2-dichlorotetrafluoroether 7 (R-114) and other rogenated hydrocarbons. Among hydrogenated hydrocarbons, particularly preferred are trichloromonofluoromethane, dichloromonofluoromethane,
At least one kind selected from dichloro/fluoromethane, 1,1.2-)lichlorotrifluorometa/, salt 1hymenaleno, and dichloride meta/... is a rogenated hydrocarbon. In this mixed blowing agent, the mixing ratio of 1,2-dichlorotetrafluoroethane and other . The mixing ratio of the volatile colorant in the composition of the present invention is from 5 to 80 parts per 100 parts of polyolefin.
The preferable range is 10 to 60 parts by weight, and if it is less than 5 parts by weight, it is difficult to obtain a highly foamed product. In this case, the foaming ratio does not increase and it becomes uneconomical, and furthermore, the quality of the foam deteriorates. Particularly suitable as the composition of the present invention is HMI30
f//L O minute μF, sea urchin, 1) value 30f/1
For polyethylene with a sieve density of 0 m or less, 2-7 chlorotetrafluoroethane is used as a volatile blowing agent. Other carbonated hydrocarbons, such as trichloromonofluoromethane, dichloromonofluoromethane, dichloro/fluoromethane, 1,1,2-trichlorotrifluoroethane, methyl chloride, dichloride methane, at least 1, and the polyoxyethylene-polyoquine/block polymer of the above-mentioned general formula (1) is blended. In the composition of the present invention, other commonly used additives may be added to the above-mentioned (1) to (c) juice O according to the need for peace of mind. Examples of such additives include lubricants such as lead stearate, finely ground inorganic nucleating agents such as silica, ultraviolet 1 absorbers, antistatic agents, stabilizers, and colorants. As a method for producing a foam from the composition of the present invention, for example, a composition comprising a polyolefin, a volatile organic blowing agent, and the compound represented by the general formula (11) is mixed at still temperature and high pressure, and then this is mixed at a low temperature. A method is usually used in which a foam is manufactured by opening one low pressure region.In this case, the forming force method and (
For example, the extrusion port /fi! method, press foaming method, injection brother/fi! The R1 extrusion foaming method is the best method to apply, such as the foaming method and the in-mold foaming method. In this way, extruded foam molded bodies of various shapes, such as sheets, boards, bales, tubes, pipes, nets, etc., can be manufactured. The foam obtained from the composition of the present invention is a high foam with an expansion ratio of 5 to 100 times, and has excellent heat insulation and cushioning properties, and can be used as a heat insulation shrine, a buffer shrine, and a packaging material. It is useful as such. Note that HM engineering and swell value have the following meanings. (1) HM [; It is a measuring vessel that standardizes the fluidity of resin under constant conditions t, and is extruded at a temperature of 1901-0.5°C and a cart of 21.6 kg according to JIS K 6760. Discharge rate per 10 minutes (indicated by ~). It is used as an index of the active properties of molten resin. (2) Swell value: 1 diameter -25, screw EE compression ratio, -3,2) At a screw rotation speed of 1100 rp and a temperature of 230 °C from an annular die with an inner diameter of 21 mmφ and an open sea of 25 holes installed downward at the tip of the extruder. Extrude a tube-shaped resin and cut it into 10 lengths in the F direction from the die surface, and the weight 1 is defined as the swell value.
It is expressed in i, it/l Ocm. That is, it is the weight per unit length of the resin extruded under specific conditions, and indicates the elastic properties of the molten 1θ1 resin. It is considered that the larger this value is, the more elastic the material is. Next, the present invention will be explained in more detail with reference to Example O. In addition, the appearance properties, cell distribution, and compression ratio of the foams in Examples were evaluated according to the first-order criteria. (1) Appearance: Observe the appearance of the foam and evaluate it according to the following criteria. A: The foam is free from uneven foaming such as twisting and unevenness, and has excellent smoothness with no ripples on the surface. B...There is no twisting or uneven foaming such as unevenness in the foam,
Items with ripple-like patterns on the surface. The product is durable enough. C- Foamed material with uneven foaming such as twisting and unevenness is observed, and its value as a product is significantly inferior (2) Cell content IJ Observe the air bubbles in the foamed material and evaluate based on the criteria listed above. A: Cases with uniform bubble distribution B: Cases with slightly uneven distribution but still have value as a product C: Cases with voids (cavities) that are slightly uneven, and very Uneven things. Product value is extremely low. (3) Compression recovery rate, based on the pressure shoe test method shown in TIS Z-0234, was conducted in the following manner. That is, the test piece is compressed by 1 factor of 50 of the initial thickness, the load is immediately removed, and the thickness is allowed to recover by 1.5 seconds after being left for 30 seconds. The same way as the 50qb compression test was carried out to improve the thickness after recovery. This j5ψ1'1ff: Repeat 5 times, 5 times 1'' recovery thickness divided by the initial value [7]. Evaluation standard V is a measure of warm and ambiguous sex.
Well, it is as follows. A...Less than 10 tl). Extremely excellent. B...10 to 20% range. Are better. C...20#) Therefore, the amount of deformation due to buckling is large and the value as a curved product is inferior. (4) Foaming ratio Foam density was determined based on JIS K-6767
' The foaming ratio was calculated from the weight and volume of the foam after 10 days, and the foaming ratio was determined according to the following formula. (5) For thick material aptitude extrusion, as an index for determining how efficiently a thick foam, that is, a foam with a large cross-sectional area, can be obtained, the efficiency calculated according to the following formula is used. use However, the unit of (-1 foam cross section is (II, unit of extrusion)

[
It's been 97 hours since J. The higher the efficiency, the greater the expansion ratio in the direction perpendicular to the extrusion direction than in the extrusion J direction, and a foam with a large cross-sectional area can be obtained with a small amount of extrusion, making it suitable for molding thick objects. become. The evaluation criteria are as follows. A: Efficiency is 0.12 or more and is most suitable for molding thick materials. B Efficiency is 0.08 or more -L, 0.12 or less,
Although the efficiency is slightly inferior, the molding of thick materials is as effective as FF, so it is practical. C. It is difficult to mold thick materials when the efficiency is less than 0.08. / Table 1 Table 2 Example 1 High density polyethylene (density 0.955? / crl
, MIO, 02r/10 min, HMI 3.8 f/
l 0 minutes, swell value 20? / 10 tyn, manufactured by Asahi Kasei Kogyo ■ 3880, registered trademark) 1 (1
0 parts by weight (in contrast, the second batter was mixed with a predetermined line of polyester/ethylene-boriogynopropylene block polymer, dispersed with a mixing roll, and then extruded into foam. A base material for extrusion foaming was prepared using a first extruder (II+!'f = 50 cylinder φ, L/D = 3
The experiment was carried out using an extrusion foaming device constructed by connecting in series a first extruder (65 mm diameter, L/D = 30 mm) equipped with a cooling oil jacket in the cylinder. That is, the above-mentioned base material for extrusion foaming was subjected to 5. Feed the first extruder set at a maximum temperature of 200°C at a rate of oKg/hour,
On the other hand, the area where this base material is melted and mixed in the extruder
, R-114 and R-113 as blowing agents, resin 100
A composition for high foaming is prepared by injecting 16 vertical parts into each heavy weight. This composition was supplied through a connecting pipe to a second extruder, where it was gradually cooled to the optimum foaming temperature and extruded through a rondo die having an inner diameter of 5 mm to produce a foam. The physical properties of the obtained foam are shown in Table 3 G (as shown in Table 3), along with the type and amount of polyoxy/ethylene-polyoxy/zolopyreno block polymer and blowing agent. All of the foams that have been processed have a low density and a good expansion ratio of /J, and all of the appearance properties, external bubbles, and compression circulation ratio are also [
- It was an excellent/low quality item with a value. 1.L: In the example below, Boriogyshiethylene-VolioA' /
A composition without the addition of propylene block polymer was prepared, and a foam was produced in a completely similar manner. Table 3 shows the results of the foamed foam.
Although the appearance properties are excellent, there are bubbles (1i is unsuitable for -) and many voids are observed, and compression recovery is 1.+.
420% or more, and the product value was significantly inferior overall. / \ /' Example 2 High-density polyethylene (density 0.960? /cM, M
I (1,3f/10 minutes, HMI 259710 minutes, Sue jL value 21y/1OCn1, Asahi 1st year T2 industry @manufactured/
Chick B870゜registered trademark) 100 City 1st Division G,
Various types of boriogi. A composition was prepared by adding 1 volume of Enare/Polyogi/Gropyre/Bronokubo and 130% of R113 as a foaming agent, from which a foam was produced in the same manner as in Example 1. The physical properties of the obtained foam are shown in Table 4 along with the polyoxy/ethylene/-polyoxy/propylene/block polymer and the blowing agent. As can be seen from Table 4, all the foams obtained in Experimental Nos. 5 to 7 had low density and high expansion ratio, and the external appearance, air bubble distribution, compression recovery rate iJ, and satisfactory products. It was an excellent item with great value. 1 A composition without the addition of the above Example 0 "O'・'Rimura'"7''-polyoxy/probile/block polymer was prepared and carried out in exactly the same manner.The physical properties of the obtained foam were evaluated in the fourth Table G: Small.Although the foam has a low density and is foamed at a high magnification, its appearance is markedly uneven and twisted, and the bubble molecules are non-uniform and many voids are observed. Overall, the compression recovery rate was 20% or higher, which was 7 times lower than the product value. A composition exactly the same as in Example 1 Experiment No. 1 was prepared, except that it was placed in the . Table 5 shows the usage amount of 73 squirrels.As can be seen from Table 5, the foams obtained in Experiments 9 to 13 were all foamed at low density and high magnification, and the appearance properties and bubble distribution were Both the compression recovery rate and the compression recovery rate were excellent and had commercial value. Compositions were prepared in which the amount of pronone 104 used was changed, and using these compositions, foams were produced in the same manner. The physical properties of the foam are shown in Table 5 along with the amount of Pronone 1040 used. In both experiment numbers 14 and 15, the foam had a low density and a high
foaming 1~, and experiment number 14Vc, e, l
Regarding the appearance properties, in Experiment No. 15, the bubble distribution and compression recovery rate were each at an excellent standard1, but the other items were both significantly inferior, and overall, the foam (d
The product value is inferior. / ＼ Example 4 A composition was prepared by replacing the high-density polyethylene in Example 1 with another foam, and a foam was prepared in exactly the same manner as in Example 1. The properties of the obtained foams are shown in Table 6 (・C) along with the properties of polyolefin 1.
5 density and still expands at a high magnification.
i. Compression recovery rate is both excellent. It had high commercial value. In the above, a composition was prepared using Pronone 104 at an illumination temperature of jJI+, and a foam was produced in the same manner as above. The foams of each resin are foamed at low density and high foaming rate. Although the appearance quality is at an excellent standard, it is significantly inferior in other items, and the product rdli value is significantly inferior overall. / / \ / / /' / Example; 5 Example A composition was prepared by replacing the blowing agent R113 in Experiment No. 5 with six other blowing agents, and a foam was produced in the same manner as in Example 2 Experiment No. 5. Table 7 shows the characteristics of the foamed foams along with the types of blowing agents.
[, low density) W with high foaming density lJ::I, appearance properties. 7%) 'IF cloth, compression recovery rate is excellent, high L)+!'O Akitsukuda 1 crystal face 11 is healed, so it's a female. 1-: iEshiGko',・Prepare a composition with the addition of 1/104 and add 4 to 7 using a
・k<Similarly, a foam was produced using KL. The properties of the obtained foams are shown in Table 7, depending on the type of blowing agent.
However, the appearance is markedly uneven in foaming, and outside of the bubbles (
1i was uniform, a large number of hoids were observed, the compression recovery rate was 1t20%1'), it was soil, and its commercial value was extremely poor overall. / Using high-density polyethylene of 6 types in Table 8 as the polyolefin, this 100-fold vertical part i(-)' I
30 overlapping parts of J-Non 104, 0.6 7 Lika as a nucleating agent
1) Four substrates for foam molding were prepared by tribrazing with Yurumi Giza. / Foaming agent 11 ° people ['l k・(-4 to 2
+), extruder (1-1 diameter 50mmφ, L/D30) and/
First extruder CI'Lf165mmφ, L/1) = 30, equipped with a first run-out for cooling
The first extruder (1) was heated to a maximum of 220°C using an extrusion foaming device with a groove light connected to the first extruder (1).
log9. A foaming composition is prepared by supplying a foaming agent at a feed rate of 9/hour and adding a specified foaming agent to the zone where it is melted and mixed. As the agent, a mixture of F 114 and F 113 at an equal cell ratio was used, and this was mixed with high density polyethylene 1
The ratio is 35 times more than 00 times! 1-Continuously fed by pump. The thus strained composition is supplied to the second extruder through the connecting pipe, where it is gradually cooled to the optimum foaming temperature VC, and the composition's nose is transferred to the tip of the second extruder. A molded foam was obtained by extrusion using a Rondo die with a diameter of 7.5 mm. The evaluation results of the foams obtained +-)7+- are summarized in Table 9 VC. Both foams have a high expansion ratio of about 40 times, and are good in all evaluation items of cell distribution, compression recovery, and extrusion moldability, and are thick! The proboscis suitability was also good, and it had a commercial value of 1-minute. \Table 9 Example 7 HDPE-1 (HMI 3.8/'10 minutes, swell value 20f/1O(1)) was used as the polyolefin,
Add λ・4 to this 1t30 double section, and add 0- to pronon 104.
18 parts: 1 part, Fl14 and F 113 as blowing agents
A foam was produced in the same manner as in Example 6 from a foaming composition prepared by adding 1 part by weight of 35 parts of an equimolar mixture of No. 10 Moxibustion As can be seen from this table, when Prone/104 is not used (experiment number 35), it has poor commercial value due to its poor suitability for non-bubble (1i) and thick materials, and '!, / If the scraping solution exceeds 15 f4i parts per 100 superimposed parts of polyethylene (experiment code 42), the resulting foam will have poor cell distribution and poor compression recovery.Example 8 Implementation Instead of pronone 1040 in Example 7, zoro
A foaming composition was prepared using exactly the same ingredients except that 4None 204 or Zoronone 208 was used in triplicate. This composition is foam-molded, −'
The evaluation results for the C4!4/ζ friend foam are shown in Table 11. No. j l Table I1+S9 Heavy density polyethylene (H1) P E ~ River, HMI 3
．． 8 g/'lO min, swell value 20? / l O
cm ) 100 heavy weight (-zo ['') 710.1f1
: 0.5 layered part and God's mixed blowing agent
A foam was produced in the same manner as J (7) and the evaluation results for this foam are shown in Table 12.
9/10 minutes, swell value 20f/10 minutes) 100 cars has a section υ' (1 meter extra from the old 0.5 subtotal section υ(
2.Equimolar mixture of F114 and F113 as blowing agents
A foaming composition was prepared by blending 4'//J with different eyelids, and using this JL5, a foam was produced in the same manner as in Example (1). Table 13 shows that ζ is smaller than Table 13. Table 13 As can be seen from this table, if the amount of blowing agent used is small, the resulting foam will have a low magnification and low compression recovery. If it is too much, the bubble distribution, suitability for thick materials, i) curling foaming,
+= becomes. Patent Applicant Asahi Kasei Kogyo Co., Ltd. Agent Agata Mei Proceedings Amendment Shoshi July 1157 111.1
．． 11 No.) Person 1. 1982 Patent Application No. 92372 2); Koake no)? , +5 Polyolefin composition for high foaming 3f Mountain 11 Risuruh ° Ha1mi・'Jun 1f Patent applicant ItI'li 1-2-6 Dojimahama, Kita-ku, Osaka, Osaka Prefecture
3rd and 6th generation Teru Miyazaki 1st generation k
4 No. 5 1yahi'l fillν+r, j+1
111 Invention increased by IJIII Contents of amendment in IFL08 (1) The scope of claims will be amended as shown in the attached sheet. (2) From the 6th line from the bottom of page 9 to the 5th line of page 10 of the specification, “Salt F Hymetel...Fluoroethane (R-
114]” All μ are corrected as below. "J-henyl methyl, -l salt f, methane, trichloromonofluor, = 4-0 ethane, dichlorodifluoromethane, monochlorotrifluoromethane, dichloromonofluoromethane, monochlorodifluoromethane, [rif" 1 mouth 11
Lifluoroethane, dichlorotetrafluoroI”ethane,
Monochloropentafluoroethannatate is mentioned. Among these, a particularly preferred blowing agent is dichlorotetrafluoroethane.'' (3) Page 10, line 10 or 1, 1.2-J, and line 13 rl, 2-J are deleted. (4) Delete "I'N,, 2-" on the 9th line of page 11 and rl, 1.2-J on the 12th line. (5J V1o% on the 8th line from the bottom of page 15)
"(rl'90%μmIm."). (0, page 15, line 7 from the bottom, range of rto to 2 degrees. J'(i7r range of 80 to 90%.)". 1. (7) On the 15th page, line 6 from the bottom, “2 (shi1 jōto,
" will be corrected to "Less than 80%," 1, (8) Next to the 5th line of page 17, enter
I will add all my writings. (0) Extrusion moldability The shape of the foam obtained by extrusion foaming is observed and judged based on the following evaluation criteria. There are no irregularities in the shape, no uneven foaming due to twisting, and the surface is smooth. 6 B: The extrusion state that reproduces the die shape continues continuously, but there is a slight C-shape on the surface. Small wrinkles can be observed.Crystal value is 1°C...Continuous extrusion that reproduces the die shape is difficult due to twisting of the foam, unevenness, or deformation due to shrinkage. It has almost no commercial value.'' (9) In the first line of page 21, change ``20% or more'' to ``
I will correct it to "less than 80%." (1 (1) Change “20% or more” in the 4th line of page 24 to “
I will correct it to "less than 80%." θυ On the 32nd page, the first line “20%μ”2” is changed to “80
I will correct it to "less than 1". 0 → Corrected 1 to ``Henn Yur Mixie J'tr Henn El Mixer'' in the 5th line of page 35. Claim 1 A) a polyolefin, (b) a volatile organic blowing agent, and a compound represented by the general formula %) (in which t, m, and n are integers of 1 or more), consisting of V. Borioleso for high foaming, f-set paramono. 2 Mixing ratio of volatile organic blowing agent is polyolefin 10
0 weight parts! The composition according to claim 1. 3. The composition according to claim 1, wherein the mixing ratio of the compound represented by the general formula (1) is from 70.05 to 15 parts by weight per 100 parts by weight of 4 parts by weight. 4. The composition according to claim 11, which is polyolefin or high-density polyethylene. 5 High density polyethylene is HMI 30 Hy/1o
The composition according to claim 4, which can be subjected to preparative separation and has a swell value of 309,710 cm or less. 6 Claims 1, 2, 4, or 5, wherein the volatile organic blowing agent is a mixed blowing agent consisting of dichlorotetrafluoroethane and other halogenated hydrocarbons.
Compositions as described in Section. The mixing ratio of 7-dichlorotetrafluoroethane and other logenated hydrocarbons is 1=4 to 4 in molar ratio.
:1. 8. Claim No. 8, wherein the halogenated hydrocarbon is at least one persimmon selected from trichloromonofluoromethane, dichloromonofluoro, methane, dichlorodifluoromethane, trichlorotrifluoroethane, methyl chloride, and di-hymethane. The composition according to item 6 or 7. Procedural amendment +11 1'1 ノ) Table Koshojuro 1957 Patent Application No. 923728 1 Bun 2 November 5ノ))',■,'1 Polyolefin assembly for high foaming,) (ill'ltopi) 111 koku, patent applicant fiIsui 61i 1-28i Dojimahama, Kita-ku, Osaka-shi, Osaka; lyu F+
(ooa) Miyazaki, 71st member of Asahi Kasei Industries, Ltd.
Teru 1st Jll Person 〒101 East-: (Middle dog l<'JI+1(・61'l
14th 5ri 1yashi・L', 11・)1゜1'7182
1 i()'l! lA）１云明7、Nli IE
(/B, j3! Contents of the detailed description of the invention column 8 in the specification (1) "1,2-dichlorotetrafluoroethane" in the chemical name column in Table 1 on page 18 of the specification. , "dichlorotetrafluoroethane", and rl, 1.2-
) IJ chlorotrifluoroethane jk, r) lJ ri J, I rJ trifluoroethane" with one correction. Ding Tsugura shoaki+o 5s r+ 6' n 9 ul・C
I'l し'1ノ,...]・1982 Patent Application No. 92372-・Nninmei3・I)', t,'1 Furthermore, polyolefin composition for foaming No. 11111] Ri4ruro・If fl and Oki 1111 Patent Applicant 1 (1・I
l Representative Yumi, 1-2-6 Dojimahama, Kita-ku, Osaka-shi, Osaka Prefecture
Teru Miyazaki 1st Generation “Ko!” (〒101 Higashi 1jl, Kōnakari l<', il!l・me i1
'10 5tji l'++ln, 7. jp. 171821 1 (jly 1 a)
Contents of the 8th Amendment (1) Expansion ratio on page 4, line 12 of the specification is corrected to ``gold,'' foaming ratio. (2) [Trichlorotrifluoromethane l'tr'? Lichlorotrifluoroethane 1
Corrected to -i''T. (:3) 1-30 parts by weight 1 tusk on page 35, line 4. Corrected to 13 overlapping parts. (4) 6th line 1-F'11 from page 35
4 and 171131 are corrected to i l (l 14 and January" 31. (5) 1 ■ (114 and I = 4 lines from the bottom of page 38)
' Corrected to 1131 11 14 and 81131. (6) Giant □114 and sr t on page 43, line 5
Corrected t a 1 to l +: 114 and 1 → 113'' and made one.

Claims (1)

[Claims] 1 (a) polyolefin, ←) volatile organic blowing agent, and (c) general formula %) (11 (in the formula, l, m, r) are integers of 1 or more ) Highly foamable polyolefin composition 1. 2 The mixing ratio of the volatile organic blowing agent is 10% of the polyolefin
Claim 1: 5 to 80 parts by weight per 0 parts by weight
The mixing ratio of the compound represented by the general formula (1) in Composition 3 described in Section 3 is 0.05 to 15 parts □-□N per part by weight of polyolefin Zoo.
--→-□□□, 7□Shenju→□□11.1□□□ The composition according to claim 1. 4. The composition according to claim 1 JIJ, wherein the polyolefin is high-density polyethylene. 5. The composition according to claim 4, wherein the high-density polyethylene has a HM process of 30 f/10 minutes or less and a swell value of 3 (1/10σ or less). 6. The composition according to claim 4, wherein the volatile organic blowing agent is 1. Claims: A mixed yarn blowing agent consisting of 2-dichlorotetrafluoroethane and other halogenated hydrocarbons;'A! Section 1, Section 2
Item 1 is the composition described in Item 5. 7. The composition according to claim 6, wherein the mixing ratio with the logenated hydrocarbon other than 2-chlorotetrafluoroethane is in a molar ratio of 1°4 to 4:1. 8 The halogenated hydrocarbon is at least one selected from trichloromonofluoromethane, dichloromonofluoromethane, dichlorodifluoromethane, 1,1.2-1-lichlorotrifluoroethane, methyl chloride, and dichlormethane The composition according to claim 6 or 7.