EP0346956B1 - Composition de nettoyage à base de résine - Google Patents

Composition de nettoyage à base de résine Download PDF

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Publication number
EP0346956B1
EP0346956B1 EP89201168A EP89201168A EP0346956B1 EP 0346956 B1 EP0346956 B1 EP 0346956B1 EP 89201168 A EP89201168 A EP 89201168A EP 89201168 A EP89201168 A EP 89201168A EP 0346956 B1 EP0346956 B1 EP 0346956B1
Authority
EP
European Patent Office
Prior art keywords
cleaning
resin
resin composition
weight
molding machine
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP89201168A
Other languages
German (de)
English (en)
Other versions
EP0346956A3 (en
EP0346956A2 (fr
Inventor
Hiroshi Takasu
Kenjiro Obama
Hiroyuki Fujii
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
JNC Corp
Original Assignee
Chisso Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Chisso Corp filed Critical Chisso Corp
Publication of EP0346956A2 publication Critical patent/EP0346956A2/fr
Publication of EP0346956A3 publication Critical patent/EP0346956A3/en
Application granted granted Critical
Publication of EP0346956B1 publication Critical patent/EP0346956B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
    • C11D1/02—Anionic compounds
    • C11D1/12—Sulfonic acids or sulfuric acid esters; Salts thereof
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
    • C11D1/02—Anionic compounds
    • C11D1/12—Sulfonic acids or sulfuric acid esters; Salts thereof
    • C11D1/22—Sulfonic acids or sulfuric acid esters; Salts thereof derived from aromatic compounds
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
    • C11D3/16—Organic compounds
    • C11D3/37—Polymers
    • C11D3/3746—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • C11D3/3749—Polyolefins; Halogenated polyolefins; Natural or synthetic rubber; Polyarylolefins or halogenated polyarylolefins

Definitions

  • This invention relates to a cleaning resin composition used for cleaning the inside of various molding machines. More particularly it relates to a cleaning resin composition obtained by blending a neutral salt of an alkylbenzenesulfonic acid, an inorganic filler and a water-repellent compound with a polyolefin resin.
  • thermoplastic resins has been more and more diversified and production of more grades in smaller quantities has been intended. Further, due to appearance of engineering plastics, color exchange or resin exchange inside molding machines has been carried out within a broad temperature region, and the frequency of the color exchange or resin exchange has also been increasing.
  • a cleaning agent composed mainly of a hard resin such as acrylic resins, a cleaning agent obtained by blending a nonionic surfactant with a thermoplastic resin or a cleaning agent obtained by blending a lubricant such as stearic acid with a thermoplastic resin have been developed.
  • the cleaning agent obtained by blending stearic acid or the like with a thermoplastic resin is insufficient in the cleaning effect inside the molding machine, and in the case of the cleaning agent obtained by blending a nonionic surfactant with a thermoplastic resin, if the service temperature of the cleaning agent exceeds 250°C, vigorous evolution of decomposition gas occurs and also a characteristic odor occurs to have a bad influence upon the operational environment, and further the cleaning effect is insufficient.
  • EP-A-0234529 discloses a thermoplastic resin composition for cleaning a shaping apparatus comprising a sodium salt of sulfonic acid, a water-repellent compound, a thermoplastic resin and optionally an inorganic compound like silicon dioxide.
  • the present inventors have made extensive research in order to obtain a cleaning resin composition by the use of which it is possible to effect color exchange inside various molding machines by exchanging the composition for the preceding colored resin or to clean the inside of the machines or to effect resin exchange for the preceding resin inside the machines, in a small quantity of the composition, in a simple operation and in a short time.
  • the present invention consists in a cleaning resin composition
  • a cleaning resin composition comprising a polyolefin resin, a neutral salt of an alkylbenzenesulfonic acid, an inorganic filler and a water-repellent compound blended with said polyolefin resin, characterized in that said inorganic filler is talc or calcium carbonate and the proportions of said neutral salt of an alkylbenzenesulfonic acid, said inorganic filler of talc or calcium carbonate and said water-repellent compound are 1 to 20%, 1 to 30% and 0.5 to 10% each respectively, by weight, based on the weight of said composition.
  • polyethylene resins such as high density polyethylene, linear low density polyethylene, low density polyethylene, polypropylene resins such as crystalline propylene homopolymer, crystalline propylene-ethylene copolymer, crystalline propylene-ethylene-butene-1 terpolymer or crystalline propylene-butene-1 copolymer each containing 70% by weight or more of propylene component, polybutene-1, non-crystalline ethylene-propylene copolymer (EPR), non-crystalline ethylene-propylene-diene terpolymer (EPDM) and mixtures of the foregoing.
  • polyethylene resins such as high density polyethylene, linear low density polyethylene, low density polyethylene
  • polypropylene resins such as crystalline propylene homopolymer, crystalline propylene-ethylene copolymer, crystalline propylene-ethylene-butene-1 terpolymer or crystalline propylene-butene-1 copolymer each containing 70% by weight or more of propylene component, polybut
  • preferred resins are high density polyethylene, linear low density polyethylene, crystalline propylene homopolymer, crystalline propylene-ethylene copolymer, crystalline propylene-ethylene-butene-1 terpolymer and mixtures of the foregoing.
  • the sodium salt of an alkylbenzenesulfonic acid used in the present invention is preferably used.
  • This sodium salt of an alkylbenzenesulfonic acid is an anionic surfactant and its decomposition-initiation temperature is as high as 300°C.
  • suitable alkyl groups for the neutral salt of an alkyl benzenesulfonic acid include linear or branched alkyl groups of C8 to C20.
  • the surfactant displays a powerful effect upon cleaning of the inside molding machines even within a high temperature region; thus a superior cleaning effect is exhibited over from a low temperature region to a high temperature region.
  • the quantity of the neutral salt of an alkylbenzenesulfonic acid blended is 1 to 20% by weight, preferably 5 to 15% by weight based on the weight of the composition. If the quantity thereof blended is less than 1% by weight, the cleaning effect is small when the inside of molding machines is cleaned with the resulting composition, while if it exceeds 20% by weight, notable foaming occurs when the resulting composition is granulated.
  • the inorganic fillers used in the present invention are calcium carbonate or talc.
  • the inorganic filler exerts a function of rubbing off through a mechanical force dirties in the molding machine and the preceding resin adhered thereto.
  • the quantity thereof blended is 1 to 30% by weight, preferably 5 to 20% by weight based on the weight of the composition. If the blended quantity is less than 1% by weight, the cleaning effect is insufficient, while if it exceeds 30% by weight, the melt-fluidity of the resulting cleaning resin composition is reduced and too a large load is applied onto the molding machine at the time of cleaning.
  • Examples of the water-repellent compound used in the present invention are synthetic waxes such as polyethylene wax, silicones, natural waxes, metal salts of higher fatty acids and mixtures of the foregoing.
  • the quantity of the water-repellent compound blended is 0.5 to 10% by weight, preferably 2 to 10% by weight.
  • the water-repellent compound exerts a lubricating function. If the quantity of the water-repellent compound blended is less than 0.5% by weight, the lubricating effect is small, while if it exceeds 10% by weight, the lubricating properties are so strong that the mechanical force of the coexistent inorganic filler inside the molding machine is reduced.
  • Phenolic antioxidants, thioic antioxidants or phosphorus antioxidants usually blended with polyolefin resins may be added to the composition of the invention.
  • the composition of the present invention may be obtained by introducing a polyolefin and definite quantities of a neutral salt of an alkylbenzenesulfonic acid, the inorganic filler and a water-repellent compound and further at least one member of the above-mentioned antioxidants into an agitating and mixing device such as Henschel mixer (tradename) or super mixer and agitating and mixing these materials for one to 5 minutes. Further, the resulting mixture may be subjected to melt-kneading and extruding at a melt-kneading temperature of 180° to 220°C, preferably 190° to 210°C, by means of a single screw extruder or a twin-screw extruder into pellet form.
  • an agitating and mixing device such as Henschel mixer (tradename) or super mixer and agitating and mixing these materials for one to 5 minutes.
  • the resulting mixture may be subjected to melt-kneading and extruding
  • Black resin pellets of any of ABS resin, PPS resin and modified PPO resin, difficult in color exchange, were injection-molded by means of a 35 tons injection molding machine in 50 shots, followed by cleaning the inside of the molding machine with cleaning resin compositions obtained in Examples 1-5 and Comparative examples 1-4, each in 100 g, by injection molding and repeating injection molding with a colorless polypropylene resin as a cleaning resin by the injection molding machine until the resulting molded products were not colored, to obtain the total quantity of the cleaning resin required therefor.
  • Black resin pellets of either one of ABS resin or polyethylene resin difficult in color exchange were extruded in 10 parisons (one parison: ca. 200g) by means of a blow molding machine having a die diameter of 21 mm and a core diameter of 19 mm, followed by cleaning the resulting blow molding machine with the cleaning resin compositions obtained in Examples 1-5 and Comparative example 1-4, each in 2,000 g, and then molding the parisons with a colorless polyethylene resin as a cleaning resin until the weld line of the resulting parisons where color exchange was most difficult was not colored to obtain the total quantity of the cleaning resin required therefor.
  • parisons were molded with the ABS resin under the same conditions, followed by molding the parisons with the colorless polyethylene resin as a cleaning resin without using the cleaning resin compositions until the weld line of the resulting parisons was not colored, to obtain the total quantity of the cleaning resin required therefor.
  • the cleaning resin composition of the present invention has a notably excellent cleaning effect at the time of color exchange of the preceding colored resin in various molding machines and also at the time of cleaning for exchange of the preceding resin.
  • the cleaning resin composition of the present invention in a small quantity or by using the composition in a small quantity together with a cleaning resin, it is possible to far reduce the quantity of cleaning resins consumed and also notably shorten the cleaning period of time, as compared with the case where the inside of molding machines has so far been cleaned by exchange with cleaning resins each color exchange.
  • the cleaning resin composition of the present invention displays a notably excellent effect at the time of color exchange and also at the time of resin exchange even in the case where engineering plastics such as modified PPO resin or polyphenylene sulfide resin as the preceding resin are molded at high temperatures.

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  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Wood Science & Technology (AREA)
  • Organic Chemistry (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Detergent Compositions (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)

Claims (4)

  1. Composition de résine de nettoyage comprenant une résine de polyoléfine, un sel neutre d'un acide alkylbenzènesulfonique, une charge minérale et un composé hydrophobe mélangés avec ladite résine de polyoléfine, caractérisée en ce que ladite charge minérale est du talc ou du carbonate de calcium et les proportions dudit sel neutre d'un acide alkylbenzènesulfonique, de ladite charge minérale en talc ou carbonate de calcium et dudit composé hydrophobe sont 1 à 20 %, 1 à 30 % et 0,5 à 10 % chacune, respectivement, en poids par rapport au poids de ladite composition.
  2. Composition de résine de nettoyage selon la revendication 1, dans laquelle ladite résine de polyoléfine est du polyéthylène ou du polypropylène.
  3. Composition de résine de nettoyage selon la revendication 1, qui se présente sous la forme de pastilles obtenues par malaxage de la masse fondue.
  4. Utilisation d'une composition de résine de nettoyage selon l'une quelconque des revendications précédentes pour effectuer le nettoyage de l'intérieur de machines de moulage.
EP89201168A 1988-03-12 1989-03-13 Composition de nettoyage à base de résine Expired - Lifetime EP0346956B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP63058688A JPH01234445A (ja) 1988-03-12 1988-03-12 洗浄用樹脂組成物
JP58688/88 1988-03-12

Publications (3)

Publication Number Publication Date
EP0346956A2 EP0346956A2 (fr) 1989-12-20
EP0346956A3 EP0346956A3 (en) 1990-06-20
EP0346956B1 true EP0346956B1 (fr) 1995-06-14

Family

ID=13091488

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89201168A Expired - Lifetime EP0346956B1 (fr) 1988-03-12 1989-03-13 Composition de nettoyage à base de résine

Country Status (7)

Country Link
EP (1) EP0346956B1 (fr)
JP (1) JPH01234445A (fr)
KR (1) KR910005009B1 (fr)
CN (1) CN1040881C (fr)
AU (1) AU631115B2 (fr)
CA (1) CA1336487C (fr)
DE (1) DE68923037T2 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10334293A1 (de) * 2003-07-25 2005-03-03 Lieberum, Evelyne Reinigungszusammensetzung für kunstoffverarbeitende Maschinen, Verfahren und Anwendung

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2016368A1 (fr) * 1989-05-22 1990-11-23 Hiroshi Takasu Une composition de nettoyage a base de resines
JPH0321653A (ja) * 1989-06-20 1991-01-30 Chisso Corp 洗浄用樹脂組成物
JPH0768552B2 (ja) * 1989-12-12 1995-07-26 チッソ株式会社 洗浄用樹脂組成物
JP2526167B2 (ja) * 1990-08-06 1996-08-21 チッソ株式会社 ゴム加工機用洗浄剤組成物の加工方法
GB2282607A (en) * 1993-10-06 1995-04-12 Itac Limited Stripping compositions comprising sulphonic acid and thickener
DE10329122B4 (de) * 2003-06-27 2006-07-13 Franz Hartmann Verfahren zur Reinigung von lebensmittelverarbeitenden Maschinen mit Lochscheiben sowie Reinigungsmasse zur Verwendung
JP2006335913A (ja) * 2005-06-03 2006-12-14 Daicel Polymer Ltd 洗浄用樹脂組成物
WO2008146822A1 (fr) * 2007-05-29 2008-12-04 Asahi Kasei Chemicals Corporation Agent de purge et procédé pour purger une machine de moulage de résine à l'aide de cet agent
JP5667754B2 (ja) * 2009-08-26 2015-02-12 ダイセルポリマー株式会社 洗浄用の熱可塑性樹脂組成物
EP3235622B1 (fr) * 2014-12-17 2021-07-28 Mitsubishi Chemical Corporation Agent de purge
CN104974870A (zh) * 2015-06-16 2015-10-14 郑州億润电缆材料有限公司 一种新型挤出机螺杆用清洗料及其制备方法
CN114480026B (zh) * 2020-10-23 2024-04-09 中国石油化工股份有限公司 一种性能优异的螺杆清洗剂及其制备方法

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2019422B (en) * 1978-04-20 1982-07-14 Gen Electric Flame retardant crystalline polycarbonate compositions
JPH0624724B2 (ja) * 1986-02-20 1994-04-06 チッソ株式会社 溶融混練装置洗浄用の熱可塑性樹脂組成物
KR940009003B1 (ko) * 1986-02-20 1994-09-28 짓소 가부시끼가이샤 세척용 열가소성 수지 조성물
JPH0788520B2 (ja) * 1986-09-08 1995-09-27 チッソ株式会社 熱可塑性樹脂組成物

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10334293A1 (de) * 2003-07-25 2005-03-03 Lieberum, Evelyne Reinigungszusammensetzung für kunstoffverarbeitende Maschinen, Verfahren und Anwendung

Also Published As

Publication number Publication date
AU631115B2 (en) 1992-11-19
CN1035834A (zh) 1989-09-27
DE68923037T2 (de) 1995-11-30
KR890014721A (ko) 1989-10-25
CA1336487C (fr) 1995-08-01
JPH01234445A (ja) 1989-09-19
AU3121989A (en) 1989-09-14
CN1040881C (zh) 1998-11-25
DE68923037D1 (de) 1995-07-20
EP0346956A3 (en) 1990-06-20
EP0346956A2 (fr) 1989-12-20
KR910005009B1 (ko) 1991-07-20

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