WO1998036020A1 - Procede pour la production de mousses de resine polyolefinique - Google Patents
Procede pour la production de mousses de resine polyolefinique Download PDFInfo
- Publication number
- WO1998036020A1 WO1998036020A1 PCT/JP1998/000189 JP9800189W WO9836020A1 WO 1998036020 A1 WO1998036020 A1 WO 1998036020A1 JP 9800189 W JP9800189 W JP 9800189W WO 9836020 A1 WO9836020 A1 WO 9836020A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- foam
- low
- polyolefin resin
- foaming agent
- weight
- Prior art date
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/04—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent
- C08J9/12—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a physical blowing agent
- C08J9/14—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a physical blowing agent organic
- C08J9/149—Mixtures of blowing agents covered by more than one of the groups C08J9/141 - C08J9/143
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2201/00—Foams characterised by the foaming process
- C08J2201/02—Foams characterised by the foaming process characterised by mechanical pre- or post-treatments
- C08J2201/03—Extrusion of the foamable blend
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2203/00—Foams characterized by the expanding agent
- C08J2203/14—Saturated hydrocarbons, e.g. butane; Unspecified hydrocarbons
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2203/00—Foams characterized by the expanding agent
- C08J2203/14—Saturated hydrocarbons, e.g. butane; Unspecified hydrocarbons
- C08J2203/142—Halogenated saturated hydrocarbons, e.g. H3C-CF3
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2323/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2323/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
Definitions
- the present invention relates to a method for producing a polyolefin-based resin foam, and more particularly, to the use of a specialty evaporative foaming agent.
- the present invention relates to a method for producing a polyolefin resin extruded foam capable of maintaining excellent heat insulating properties for a long period of time.
- dichlorodifluorophenol CFC-12
- dichlorotetrafluorophenol CFC-1
- C-245-fa is a non-flammable compound with a boiling point of 15 ° C. Since it is a fluorinated hydrocarbon containing hydrogen atoms, it can cause ozone layer destruction and global warming. It is considered to be a small amount, and its boiling point is determined by the trichlorofluoronorelomethane (CF) conventionally used as a foaming agent for urethane foam. Because it is close to C-111) and is nonflammable, it is attracting attention as a very promising candidate for urethane foaming agents to replace CFC-11.
- CF trichlorofluoronorelomethane
- HFC-2245 fa has a slightly higher boiling point as an evaporative foaming agent for the production of polyolefin resin foams such as styrene resin. Also, because of its low solubility in polyolefin resins, under the conventional conditions, the poor dissolving power of HFC245fa during extrusion foaming, and the formation of gas in the die, Sufficient foam cannot be obtained due to liberation.
- FIG. 1 is a drawing showing an outline of an example of a styrene resin foam production apparatus.
- 1 and 2 indicate the extruder
- 3 indicates the cooler
- 4 indicates the die
- 5 indicates the blowing agent injection path.
- a main object of the present invention is a method for producing an extruded polyolefin-based resin foam which can maintain excellent heat insulating properties, dimensional stability, and the like for a long period of time.
- the present inventor has made intensive studies in view of the above-mentioned problems in the prior art. Then, in the extrusion foaming method of a polyolefin resin using an evaporative foaming agent, an attempt was made to use a low-boiling aliphatic hydrocarbon such as propane or butane as the foaming agent. When foam or propane is used, a foam having sufficient heat insulating properties cannot be obtained, and when foam is used, fine and stable air bubbles cannot be obtained, and over time. With the change, the heat insulation performance was greatly reduced, and it was not possible to obtain a desired good foam.
- a low-boiling aliphatic hydrocarbon such as propane or butane
- the present invention produces a polyolefin-based resin foam by extruding a polyolefin-based molten resin in which an evaporative foaming agent is uniformly dispersed into a low-pressure region.
- 1,1,1,3,3—pentafluoro-propane propane is used in an amount of 5 to 95% by weight and a low-boiling aliphatic carbon having a boiling point of 15 ° C. or less as a steaming foaming agent.
- a method for producing a polyolefin resin foam characterized in that a foaming agent mixed with 95 to 5% by weight of hydrogen is used. Pertains to
- 1,1,1,3,3-pentapentanoprono as an evaporative foaming agent in the extrusion foaming method. It is necessary to use a mixture consisting of 5-95% by weight of HFC (HFC-245-fa) and 95-5% by weight of a low-boiling aliphatic hydrocarbon having a boiling point of 15 ° C or less. is there.
- low-boiling aliphatic hydrocarbons having a boiling point of 15 ° C or lower include methane (boiling point: 160 ° C), ethane (boiling point: 188 ° C), and ethylene ( Boiling point: 104. C), Prono. (Boiling point-42 ° C), propylene (boiling point-48 ° C), butane (boiling point-0.5 ° C), butene (boiling point-16 ° C), isobutane (Boiling point-12 ° C) and isobutene (boiling point-7 ° C). These hydrocarbons can be used alone or as a mixture of two or more.
- the mixing ratio of HFC — 245fa and low-boiling aliphatic hydrocarbon is within the range of 5 to 95% by weight of the former and 95 to 5% by weight of the latter, and is optional depending on the application and formulation. Can be selected.
- the above-mentioned mixed blowing agent composed of HFC—245fa and a low-boiling aliphatic hydrocarbon can be used alone, or of course, can be used in combination with another blowing agent.
- Foaming agents that can be used in combination are chlorinated chill, difluoromethan, pentafluoroethane, 1,1,1,1,2—tetrafluoroethane, 1 , 1, 1 — Trifnoroletroethane, 1, 1 — Dichloronorethane, low boiling point halogenated hydrocarbons such as ethane, air, nitrogen, inert gas such as carbon dioxide, water, etc. is there.
- the proportion of the mixed blowing agent in the total blowing agent is preferably 20% by weight or more, more preferably 40% by weight or more.
- foaming agent of the present invention may optionally contain a decomposition inhibitor.
- Preferred degradation inhibitors include: PC
- Nitrobenzen, Nitromethane and other Troy compounds 1, 2 — Epoxy compounds such as butyrenoxide and epichloronohydrin, p — t — Butinore-kate-kore, 2, 6 — Di-t — Butino-le-p—Crezo-no-le, etc.
- the compounding ratio of these decomposition inhibitors is about 0.05 to 5 parts by weight based on 100 parts by weight of the mixed blowing agent consisting of HFC-245fa and a low-boiling aliphatic hydrocarbon. That is appropriate.
- any of an aromatic polyolefin resin and an aliphatic polyolefin resin can be used as the polyolefin resin. It can be.
- a styrene resin for example, a styrene resin can be used.
- Styrene-based resins include polystyrene, styrene and ⁇ -methylstyrene, maleic anhydride, acrylic acid, acrylates, Modified by copolymerization of acrylic acid and methacrylic acid ester, or by adding styrene / butadiene rubber (SBR) to polystyrene as appropriate.
- SBR styrene / butadiene rubber
- aliphatic polyolefin resin polyethylene, polypropylene, or the like can be used.
- the expansion ratio of the obtained foam is in an appropriate range described later, from the viewpoint of the heat retaining property, the dimensional stability and the like. Therefore, the addition amount of the foaming agent may be appropriately adjusted so as to obtain the desired density of the foam.
- the total amount of the foaming agent which is a mixture of the foaming agent consisting of HFC—2 45 fa low-boiling aliphatic hydrocarbons and other foaming agents added as needed, is the total amount of the polyolefin.
- the amount may be in the range of about 3 to 30 parts by weight with respect to 100 parts by weight of the resin.
- a nucleating agent such as talc for adjusting the bubble diameter
- a coloring agent such as a dye or a pigment, a lubricant, a flame retardant, and a nonionic surfactant, if necessary, Agents and the like may be added within a range that does not impair the purpose of the present invention.
- a polyolefin-based molten resin in which the evaporating foaming agent is uniformly dispersed is extruded into a low-pressure region.
- a polyolefin resin foam can be manufactured.
- a raw material obtained by adding a necessary amount of a nucleating agent, a lubricant, a flame retardant, etc. to a polyolefin resin as required is supplied into an extruder, and a predetermined amount of a foaming agent is added thereto.
- a foaming device such as a slit die into a low-pressure region to form a foam.
- System A resin foam can be obtained.
- the resulting foam originating foam density 0. 0 2 ⁇ 0. 0 4 5 2 ⁇ ⁇ ⁇ 3 mm, this is an average cell size of the foam and 0. 1 ⁇ 0. 7 mm approximately TogaYoshimi Good.
- the foam density and the average bubble diameter are within the above ranges, and the thickness and thickness are in the range of, for example, about 10 to 150 mm, and the appearance and physical properties are good. It can be a plate-like polyrefin-based resin foam.
- the foam density is less than 0.02 g Z cm 3
- the thermal insulation performance is remarkably deteriorated, and the foam tends to shrink immediately after extrusion.
- it exceeds 5 g Z cm 3 it is not preferable because of lack of lightness and high price.
- the average cell diameter is less than 0.1 mm, it is difficult to reduce the density of the foam, and the thickness cannot be increased. If it exceeds mm, the density of the obtained foam is low, but it is not preferable because the heat insulating property is reduced.
- the evaporative foaming agent used has no risk of destroying the ozone layer, and has a small effect on global warming. It is flame-retardant and has excellent compatibility with foam raw materials.
- the resulting polyolefin resin foam has excellent heat insulation properties and dimensional stability. This can be maintained for a long time.
- the method of the present invention The foam obtained by the method can be suitably used, for example, as a heat insulating material for a house or the like.
- a styrene resin foam was produced by the following method.
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US09/367,280 US6087408A (en) | 1997-02-17 | 1998-01-19 | Process for the production of polyolefin resin foams |
EP98900433A EP0962487A4 (en) | 1997-02-17 | 1998-01-19 | METHOD FOR PRODUCING POLYOLEFINE RESIN FOAMS |
AU54979/98A AU5497998A (en) | 1997-02-17 | 1998-01-19 | Process for the production of polyolefin resin foams |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9/31842 | 1997-02-17 | ||
JP9031842A JPH10226730A (ja) | 1997-02-17 | 1997-02-17 | ポリオレフィン系樹脂発泡体の製造方法 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1998036020A1 true WO1998036020A1 (fr) | 1998-08-20 |
Family
ID=12342316
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP1998/000189 WO1998036020A1 (fr) | 1997-02-17 | 1998-01-19 | Procede pour la production de mousses de resine polyolefinique |
Country Status (5)
Country | Link |
---|---|
US (1) | US6087408A (ja) |
EP (1) | EP0962487A4 (ja) |
JP (1) | JPH10226730A (ja) |
AU (1) | AU5497998A (ja) |
WO (1) | WO1998036020A1 (ja) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6736176B2 (en) * | 2000-01-29 | 2004-05-18 | Bridgestone Corporation | Tires |
DE10054414A1 (de) * | 2000-10-27 | 2002-05-08 | Gefinex Jackon Gmbh | Alternative Treibmittel mit HFKW |
HUP0302577A3 (en) | 2000-12-21 | 2011-04-28 | Dow Global Technologies Inc | Blowing agent composition and polymeric foam containing a normally-liquid hydrofluorocarbon and carbon dioxide |
DE60130258T2 (de) | 2000-12-21 | 2008-05-21 | Dow Global Technologies, Inc., Midland | Treibmittelzusammensetzungen, enthaltend teilfluorierte fluorkohlenwasserstoffe und einen niedrigsiedenden alkohol und/oder eine niedrigsiedende carbonylverbindung |
US20030214949A1 (en) * | 2002-05-16 | 2003-11-20 | Nadim Shaikli | System for reordering sequenced based packets in a switching network |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH05222235A (ja) * | 1992-02-07 | 1993-08-31 | Asahi Glass Co Ltd | ポリオレフィン発泡体の製造方法 |
JPH05230264A (ja) * | 1992-02-19 | 1993-09-07 | Asahi Glass Co Ltd | スチレン系樹脂発泡体の製造方法 |
JPH05239251A (ja) * | 1991-11-18 | 1993-09-17 | Daikin Ind Ltd | フルオロプロパンからなる発泡剤およびプラスチック発泡体の製造方法 |
JPH05287109A (ja) * | 1992-04-10 | 1993-11-02 | Asahi Glass Co Ltd | 熱可塑性樹脂発泡体製造方法 |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2292386A (en) * | 1994-08-17 | 1996-02-21 | Basf Corp | Polyol compositions and rigid polyisocyanate based foams containing 2-chloropr opane and aliphatic hydrocarbon blowing agents |
US5558810A (en) * | 1994-11-16 | 1996-09-24 | E. I. Du Pont De Nemours And Company | Pentafluoropropane compositions |
US5672294A (en) * | 1996-04-10 | 1997-09-30 | Alliedsignal Inc. | Azeotrope-like compositions of 1,1,1,3,3-pentaflurorpropane and hydrocarbons |
US5817705A (en) * | 1996-10-15 | 1998-10-06 | Tenneco Protective Packaging Inc. | Short time frame process for producing extruded closed cell low density propylene polymer foams |
US5993707A (en) * | 1998-12-04 | 1999-11-30 | The Dow Chemical Company | Enlarged cell size foams made from blends of alkenyl aromatic polymers and alpha-olefin/vinyl or vinylidene aromatic and/or sterically hindered aliphatic or cycloaliphatic vinyl or vinylidene interpolymers |
-
1997
- 1997-02-17 JP JP9031842A patent/JPH10226730A/ja active Pending
-
1998
- 1998-01-19 WO PCT/JP1998/000189 patent/WO1998036020A1/ja not_active Application Discontinuation
- 1998-01-19 EP EP98900433A patent/EP0962487A4/en not_active Withdrawn
- 1998-01-19 US US09/367,280 patent/US6087408A/en not_active Expired - Fee Related
- 1998-01-19 AU AU54979/98A patent/AU5497998A/en not_active Abandoned
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH05239251A (ja) * | 1991-11-18 | 1993-09-17 | Daikin Ind Ltd | フルオロプロパンからなる発泡剤およびプラスチック発泡体の製造方法 |
JPH05222235A (ja) * | 1992-02-07 | 1993-08-31 | Asahi Glass Co Ltd | ポリオレフィン発泡体の製造方法 |
JPH05230264A (ja) * | 1992-02-19 | 1993-09-07 | Asahi Glass Co Ltd | スチレン系樹脂発泡体の製造方法 |
JPH05287109A (ja) * | 1992-04-10 | 1993-11-02 | Asahi Glass Co Ltd | 熱可塑性樹脂発泡体製造方法 |
Non-Patent Citations (1)
Title |
---|
See also references of EP0962487A4 * |
Also Published As
Publication number | Publication date |
---|---|
EP0962487A4 (en) | 2001-02-21 |
EP0962487A1 (en) | 1999-12-08 |
US6087408A (en) | 2000-07-11 |
JPH10226730A (ja) | 1998-08-25 |
AU5497998A (en) | 1998-09-08 |
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