US3677821A - Method for reconditioning the surface of plastics - Google Patents
Method for reconditioning the surface of plastics Download PDFInfo
- Publication number
- US3677821A US3677821A US89085A US3677821DA US3677821A US 3677821 A US3677821 A US 3677821A US 89085 A US89085 A US 89085A US 3677821D A US3677821D A US 3677821DA US 3677821 A US3677821 A US 3677821A
- Authority
- US
- United States
- Prior art keywords
- aqueous solution
- bleaching agent
- samples
- percent
- chlorine
- 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
Links
- 238000000034 method Methods 0.000 title abstract description 23
- 229920003023 plastic Polymers 0.000 title abstract description 23
- 239000004033 plastic Substances 0.000 title abstract description 23
- 239000007864 aqueous solution Substances 0.000 abstract description 45
- 239000007844 bleaching agent Substances 0.000 abstract description 35
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 13
- 239000000460 chlorine Substances 0.000 description 29
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 27
- 229910052801 chlorine Inorganic materials 0.000 description 27
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 17
- 239000011593 sulfur Substances 0.000 description 17
- 229910052717 sulfur Inorganic materials 0.000 description 17
- 239000000243 solution Substances 0.000 description 14
- -1 alkali metal hypochlorites Chemical class 0.000 description 11
- 229910052783 alkali metal Inorganic materials 0.000 description 10
- 239000003599 detergent Substances 0.000 description 8
- JVBXVOWTABLYPX-UHFFFAOYSA-L sodium dithionite Chemical compound [Na+].[Na+].[O-]S(=O)S([O-])=O JVBXVOWTABLYPX-UHFFFAOYSA-L 0.000 description 8
- 238000004061 bleaching Methods 0.000 description 7
- 238000012360 testing method Methods 0.000 description 7
- 238000002845 discoloration Methods 0.000 description 6
- 229920005989 resin Polymers 0.000 description 6
- 239000011347 resin Substances 0.000 description 6
- 229920000877 Melamine resin Polymers 0.000 description 5
- 239000005708 Sodium hypochlorite Substances 0.000 description 5
- 229920000122 acrylonitrile butadiene styrene Polymers 0.000 description 5
- 150000001340 alkali metals Chemical class 0.000 description 5
- SUKJFIGYRHOWBL-UHFFFAOYSA-N sodium hypochlorite Chemical compound [Na+].Cl[O-] SUKJFIGYRHOWBL-UHFFFAOYSA-N 0.000 description 5
- 239000004743 Polypropylene Substances 0.000 description 4
- XECAHXYUAAWDEL-UHFFFAOYSA-N acrylonitrile butadiene styrene Chemical compound C=CC=C.C=CC#N.C=CC1=CC=CC=C1 XECAHXYUAAWDEL-UHFFFAOYSA-N 0.000 description 4
- 230000003749 cleanliness Effects 0.000 description 4
- 238000002156 mixing Methods 0.000 description 4
- 239000005011 phenolic resin Substances 0.000 description 4
- 229920000058 polyacrylate Polymers 0.000 description 4
- 229920000193 polymethacrylate Polymers 0.000 description 4
- 229920001155 polypropylene Polymers 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 229920006305 unsaturated polyester Polymers 0.000 description 4
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 3
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 3
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 3
- DNIAPMSPPWPWGF-UHFFFAOYSA-N Propylene glycol Chemical compound CC(O)CO DNIAPMSPPWPWGF-UHFFFAOYSA-N 0.000 description 3
- 229920001807 Urea-formaldehyde Polymers 0.000 description 3
- 239000004676 acrylonitrile butadiene styrene Substances 0.000 description 3
- GZCGUPFRVQAUEE-SLPGGIOYSA-N aldehydo-D-glucose Chemical compound OC[C@@H](O)[C@@H](O)[C@H](O)[C@@H](O)C=O GZCGUPFRVQAUEE-SLPGGIOYSA-N 0.000 description 3
- MTHSVFCYNBDYFN-UHFFFAOYSA-N diethylene glycol Chemical compound OCCOCCO MTHSVFCYNBDYFN-UHFFFAOYSA-N 0.000 description 3
- SATVIFGJTRRDQU-UHFFFAOYSA-N potassium hypochlorite Chemical compound [K+].Cl[O-] SATVIFGJTRRDQU-UHFFFAOYSA-N 0.000 description 3
- IFIDXBCRSWOUSB-UHFFFAOYSA-N potassium;1,3-dichloro-1,3,5-triazinane-2,4,6-trione Chemical compound [K+].ClN1C(=O)NC(=O)N(Cl)C1=O IFIDXBCRSWOUSB-UHFFFAOYSA-N 0.000 description 3
- XWGJFPHUCFXLBL-UHFFFAOYSA-M rongalite Chemical compound [Na+].OCS([O-])=O XWGJFPHUCFXLBL-UHFFFAOYSA-M 0.000 description 3
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 2
- 239000004698 Polyethylene Substances 0.000 description 2
- 239000004793 Polystyrene Substances 0.000 description 2
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 2
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 2
- 229920001893 acrylonitrile styrene Polymers 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- QQVIHTHCMHWDBS-UHFFFAOYSA-N isophthalic acid Chemical compound OC(=O)C1=CC=CC(C(O)=O)=C1 QQVIHTHCMHWDBS-UHFFFAOYSA-N 0.000 description 2
- 229910052744 lithium Inorganic materials 0.000 description 2
- LWXVCCOAQYNXNX-UHFFFAOYSA-N lithium hypochlorite Chemical compound [Li+].Cl[O-] LWXVCCOAQYNXNX-UHFFFAOYSA-N 0.000 description 2
- 235000012054 meals Nutrition 0.000 description 2
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 2
- 239000002991 molded plastic Substances 0.000 description 2
- 239000000178 monomer Substances 0.000 description 2
- 238000010137 moulding (plastic) Methods 0.000 description 2
- XNGIFLGASWRNHJ-UHFFFAOYSA-N phthalic acid Chemical compound OC(=O)C1=CC=CC=C1C(O)=O XNGIFLGASWRNHJ-UHFFFAOYSA-N 0.000 description 2
- 239000004417 polycarbonate Substances 0.000 description 2
- 229920000515 polycarbonate Polymers 0.000 description 2
- 229920000573 polyethylene Polymers 0.000 description 2
- 229920002223 polystyrene Polymers 0.000 description 2
- 229910052700 potassium Inorganic materials 0.000 description 2
- 239000011591 potassium Substances 0.000 description 2
- HEZHYQDYRPUXNJ-UHFFFAOYSA-L potassium dithionite Chemical compound [K+].[K+].[O-]S(=O)S([O-])=O HEZHYQDYRPUXNJ-UHFFFAOYSA-L 0.000 description 2
- SCUZVMOVTVSBLE-UHFFFAOYSA-N prop-2-enenitrile;styrene Chemical compound C=CC#N.C=CC1=CC=CC=C1 SCUZVMOVTVSBLE-UHFFFAOYSA-N 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 229910052708 sodium Inorganic materials 0.000 description 2
- 239000011734 sodium Substances 0.000 description 2
- JLBJTVDPSNHSKJ-UHFFFAOYSA-N 4-Methylstyrene Chemical compound CC1=CC=C(C=C)C=C1 JLBJTVDPSNHSKJ-UHFFFAOYSA-N 0.000 description 1
- 101000913968 Ipomoea purpurea Chalcone synthase C Proteins 0.000 description 1
- 241000749985 Nites Species 0.000 description 1
- 101000907988 Petunia hybrida Chalcone-flavanone isomerase C Proteins 0.000 description 1
- OFOBLEOULBTSOW-UHFFFAOYSA-N Propanedioic acid Natural products OC(=O)CC(O)=O OFOBLEOULBTSOW-UHFFFAOYSA-N 0.000 description 1
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 description 1
- UFMPHMULHHGPRI-UHFFFAOYSA-L [K+].[K+].O=C.[O-]S[O-] Chemical compound [K+].[K+].O=C.[O-]S[O-] UFMPHMULHHGPRI-UHFFFAOYSA-L 0.000 description 1
- 125000000217 alkyl group Chemical group 0.000 description 1
- 125000000484 butyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 238000007334 copolymerization reaction Methods 0.000 description 1
- 239000003431 cross linking reagent Substances 0.000 description 1
- 230000007850 degeneration Effects 0.000 description 1
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000005562 fading Methods 0.000 description 1
- 125000000959 isobutyl group Chemical group [H]C([H])([H])C([H])(C([H])([H])[H])C([H])([H])* 0.000 description 1
- VZCYOOQTPOCHFL-UPHRSURJSA-N maleic acid Chemical compound OC(=O)\C=C/C(O)=O VZCYOOQTPOCHFL-UPHRSURJSA-N 0.000 description 1
- 239000011976 maleic acid Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- JDSHMPZPIAZGSV-UHFFFAOYSA-N melamine Chemical compound NC1=NC(N)=NC(N)=N1 JDSHMPZPIAZGSV-UHFFFAOYSA-N 0.000 description 1
- 229920003229 poly(methyl methacrylate) Polymers 0.000 description 1
- 229920005668 polycarbonate resin Polymers 0.000 description 1
- 239000004431 polycarbonate resin Substances 0.000 description 1
- 229920013716 polyethylene resin Polymers 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 239000004926 polymethyl methacrylate Substances 0.000 description 1
- 229920005862 polyol Polymers 0.000 description 1
- 150000003077 polyols Chemical class 0.000 description 1
- 150000007519 polyprotic acids Polymers 0.000 description 1
- 229920005990 polystyrene resin Polymers 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 229910052938 sodium sulfate Inorganic materials 0.000 description 1
- 235000011152 sodium sulphate Nutrition 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- VZCYOOQTPOCHFL-UHFFFAOYSA-N trans-butenedioic acid Natural products OC(=O)C=CC(O)=O VZCYOOQTPOCHFL-UHFFFAOYSA-N 0.000 description 1
- 229920006337 unsaturated polyester resin Polymers 0.000 description 1
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
- C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
- C11D3/395—Bleaching agents
- C11D3/3955—Organic bleaching agents
-
- 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
- C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances
- C08J7/12—Chemical modification
-
- 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
- C11D3/395—Bleaching agents
- C11D3/3953—Inorganic bleaching agents
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S8/00—Bleaching and dyeing; fluid treatment and chemical modification of textiles and fibers
- Y10S8/06—Resin bleach
Definitions
- US. Cl. 134-42 9 Claims ABSTRACT OF THE DISCLOSURE A method for reconditioning the stained or discolored surfaces of plastic objects to substantially restore them to their original condition which comprises the steps of treating the surface of a plastic object with an aqueous solution of chlorine-containing bleaching agent having a pH or more than 5, then treating the surface thereof with an aqueous solution of sulfur-containing bleaching agent having a pH of more than 5, and thereafter rinsing the surface with water.
- the object of the present invention is to provide a method for reconditioning the surface of plastic objects by removing stains and/or discolorations, in which the stained or discolored surface of the plastic object is first treated with an aqueous solution of chlorine-containing bleaching agent, then treated with an aqueous solution of sulfur-containing bleaching agent, and lastly rinsed with water, thereby easily restoring the original cleanliness of the surface of the plastic object.
- the aqueous solution of the chlorine-containing bleaching agent should have a pH of more than 5.
- the concentration thereof in terms of available chlorine, is required to be more than p.p.m., and it is preferably within the range of 300-500 p.p.m. for practical use. If the chlorine concentration is less than 100 p.pm. no appreciable reconditioning effect will be obtained, while an excessively high chlorine concentration will not necessarily bring about any corresponding improvement of the reconditioning effect.
- the higher is the temperature for the bleaching process the shorter will be the time required for the reconditioning process, but, in practice, it is preferred to operate within the range of 4060 C.
- the method according to the present invention is applicable to general plastic moldings such as tableware, kitchen utensils, dish pans, toys, furniture, and so forth, which are made of a variety of resins, such as ureaformaldehyde resin, melamine-formaldehyde resin, phenol resin, polycarbonate, acrylonitrile-styrene coplymer (AS resin), acrylonitrile-butadiene-styrene copolymer (ABS resin), polyethylene, polypropylene, polystyrene, unsaturated polyester, polyacrylates and polymethacrylates.
- resins such as ureaformaldehyde resin, melamine-formaldehyde resin, phenol resin, polycarbonate, acrylonitrile-styrene coplymer (AS resin), acrylonitrile-butadiene-styrene copolymer (ABS resin), polyethylene, polypropylene, polystyrene, unsaturated polyester
- the unsaturated polyester includes one prepared by polycondensating unsaturated polybasic acid such as maleic acid, phthalic acid or isophthalic acid with polyol such as ethylene glycol, diethylene glycol, propylene glycol or glycerol and then vinylpolymerizing the resulting copolymer with a polymerizable monomer, as a crosslinking agent, such as styrene or methylstyrene.
- unsaturated polybasic acid such as maleic acid, phthalic acid or isophthalic acid
- polyol such as ethylene glycol, diethylene glycol, propylene glycol or glycerol
- vinylpolymerizing the resulting copolymer with a polymerizable monomer as a crosslinking agent, such as styrene or methylstyrene.
- the 44 test plates were divided into 11 groups each group consisting of 4 plates, and the respective groups were treated as shown in the following table. Some groups were immersed in the 1st aqueous solution bath for about 1 min. and then taken out of it and then immersed in the 2nd aqueous solution bath for about 1 min. Then, said groups were taken out of the 2nd aqueous solution bath and were rinsed with flowing warm water and dried in the air. The other groups were immersed only in the 1st aqueous solution bath and taken out of it and were rinsed immediately. The temperature of said aqueous solution baths was adjusted to be 5012 C., in case of the aqueous solution of bleaching agent containing chlorine as well as hydrogen peroxide solution, and 70i2 C. in case of the aqueous solution of bleaching agent containing sulfur.
- said second treating solution consisting essentially of an aqueous solution of sulfur-containing bleaching agent having a pH of more than 5 and having a concentration of sulfur-containing bleaching agent in the range of of 300-500 p.p.rn., and the concentration of said aqueous solution of the sulfur-containing bleaching agent is about 1 wt. percent.
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Wood Science & Technology (AREA)
- Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- General Chemical & Material Sciences (AREA)
- Detergent Compositions (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
- Separation, Recovery Or Treatment Of Waste Materials Containing Plastics (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP42084926A JPS516187B1 (enrdf_load_stackoverflow) | 1967-12-29 | 1967-12-29 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US3677821A true US3677821A (en) | 1972-07-18 |
Family
ID=13844286
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US89085A Expired - Lifetime US3677821A (en) | 1967-12-29 | 1970-11-12 | Method for reconditioning the surface of plastics |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US3677821A (enrdf_load_stackoverflow) |
| JP (1) | JPS516187B1 (enrdf_load_stackoverflow) |
| DE (1) | DE1816455A1 (enrdf_load_stackoverflow) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4141685A (en) * | 1976-07-26 | 1979-02-27 | Manufacture De Produits Chimiques Protex Societe Anonyme | Method of bleaching textile fibers and activated bath for the cold bleaching of such fibers |
| US4479985A (en) * | 1978-12-26 | 1984-10-30 | Allen Jefferson K | Method for cleaning and clearing plastic surfaces |
| US4592785A (en) * | 1983-12-15 | 1986-06-03 | General Electric Company | Proteinaceous soil removal process |
| US20060191145A1 (en) * | 2001-08-24 | 2006-08-31 | Waddington North America, Inc. | Metallized cutlery and tableware and method therefor |
-
1967
- 1967-12-29 JP JP42084926A patent/JPS516187B1/ja active Pending
-
1968
- 1968-12-21 DE DE19681816455 patent/DE1816455A1/de active Pending
-
1970
- 1970-11-12 US US89085A patent/US3677821A/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4141685A (en) * | 1976-07-26 | 1979-02-27 | Manufacture De Produits Chimiques Protex Societe Anonyme | Method of bleaching textile fibers and activated bath for the cold bleaching of such fibers |
| US4479985A (en) * | 1978-12-26 | 1984-10-30 | Allen Jefferson K | Method for cleaning and clearing plastic surfaces |
| US4592785A (en) * | 1983-12-15 | 1986-06-03 | General Electric Company | Proteinaceous soil removal process |
| US20060191145A1 (en) * | 2001-08-24 | 2006-08-31 | Waddington North America, Inc. | Metallized cutlery and tableware and method therefor |
| US20100192388A1 (en) * | 2001-08-24 | 2010-08-05 | Waddington North America, Inc. | Metallized cutlery and tableware and method therefor |
| US8176641B2 (en) | 2001-08-24 | 2012-05-15 | Waddington North America, Inc. | Metallized cutlery and tableware and method therefor |
| US20120192435A1 (en) * | 2001-08-24 | 2012-08-02 | Waddington North America, Inc. | Metallized cutlery and tableware and method therefor |
| US8621755B2 (en) * | 2001-08-24 | 2014-01-07 | Waddington North America, Inc. | Metallized cutlery and tableware and method therefor |
Also Published As
| Publication number | Publication date |
|---|---|
| DE1816455A1 (de) | 1969-10-16 |
| JPS516187B1 (enrdf_load_stackoverflow) | 1976-02-26 |
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