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Patent US4880852 - Polyethylene or polypropylene, zinc oxide blend - Google PatentsSearch Images Maps Play YouTube News Gmail Drive More »Sign inAdvanced Patent SearchPatentsA deodorizing resin composition is composed of 99.9-50 parts by weight of a thermoplastic resin and 0.1-50 parts by weight of a deodorizing ingredient. The deodorizing ingredient is a white or substantially colorless deodorizing agent, which may be preferably be composed of 10-90 parts by weight of a...http://www.google.com/patents/US4880852?utm_source=gb-gplus-sharePatent US4880852 - Polyethylene or polypropylene, zinc oxide blendAdvanced Patent SearchPublication numberUS4880852 APublication typeGrantApplication numberUS 07/185,409Publication dateNov 14, 1989Filing dateApr 25, 1988Priority dateApr 7, 1986Fee statusPaidAlso published asUS4757099, US5063256Publication number07185409, 185409, US 4880852 A, US 4880852A, US-A-4880852, US4880852 A, US4880852AInventorsAkira Hoshino, Mikio Saji, Isamu YamaguchiOriginal AssigneeDainichiseika Color & Chemicals Mfg. Co., Ltd.Export CitationBiBTeX, EndNote, RefManPatent Citations (2), Referenced by (10), Classifications (17), Legal Events (3) External Links: USPTO, USPTO Assignment, EspacenetPolyethylene or polypropylene, zinc oxide blendUS 4880852 AAbstract A deodorizing resin composition is composed of 99.9-50 parts by weight of a thermoplastic resin and 0.1-50 parts by weight of a deodorizing ingredient. The deodorizing ingredient is a white or substantially colorless deodorizing agent, which may be preferably be composed of 10-90 parts by weight of a zinc compound and 90-10 parts by weight of an aliphatic polycarboxylic acid or a salt thereof, an aromatic polycarboxylic acid or a salt thereof, an acidic polymer or a salt thereof, or a sulfate of aluminum. A formed deodorizing article can be obtained by forming or molding the deodorizing resin composition into a desired shape. Formed articles of the deodorizing resin composition of this invention can have desired beautiful colors and are adapted to absorb offensive odors.
We claim: 1. A resin composition, comprising:99.9-50 parts by weight of a thermoplastic polyolefin resin and 0.1-50 parts by weight of a combination of a zinc compound and a sulfate of aluminum, which combination functions as a deodorizing ingredient. 2. The resin composition as claimed in claim 1, wherein the deodorizing agent is composed of 10-90 parts by weight of a zinc compound and 90-10 parts by weight of a sulfate of aluminum.
SUMMARY OF THE INVENTION The present inventors have carried out an extensive investigation with a view toward providing a solution to such drawbacks of conventional techniques as mentioned above. As a result, it has been found that they can be solved by the incorporation of certain specific materials in a thermoplastic resin to be employed upon production of a formed article such as plastic sheet or plastic container since the resulting formed article, for example, packaging material has excellent deodorizing capacity, leading to completion of this invention.
DETAILED DESCRIPTION OF THE INVENTION AND PREFERRED EMBODIMENTS The term "thermoplastic resin" as used herein includes, for example, synthetic or modified thermoplastic resins, for example, polyolefin resins such as polyethylene and polypropylene, polyvinyl chloride, vinylon, polystyrene, polyamides, polyesters, and cellulose acetate, which have conventionally been used in various formed articles, for example, plastic films, plastic sheets, plastic containers, fibers, etc. All of these thermoplastic resins are readily available on the market for use in the present invention. These thermoplatic resins may be in solid forms or in the form of liquid such as paste.
DEODORIZING TEST ON AMMONIA The above deodorizing sheet were cut into 50 mm�200 mm sheets. One of the thus-cut sheets was then suspended in a 300-ml Erlenmeyer flask, followed by an addition of 100 ml of 42 ppm aqueous ammonia. The outlet of the flask was sealed with paraffin and the aqueous ammonia was allowed to gasify fully. The flask was thereafter stored at 25� C. and upon an elapse of a predetermined time period, the concentration (ppm) of ammonia in the flask was measured by a Kitagawa's probe. The following results were obtained.
DEODORIZING TEST ON HYDROGEN SULFIDE One of the above-cut sheets was placed in a 300-ml Erlenmeyer flask, followed by addition of 1 ml of an 800 ppm solution of sodium sulfide in water and 0.1 ml of 1N sulfuric acid. The outlet of the flask was sealed with paraffin and the resulting hydrogen sulfide was allowed to gasify fully. The flask was thereafter stored at 25� C. and upon an elapse of a predetermined time period, the concentration (ppm) of hydrogen sulfide in the flask was measured by a Kitagawa's probe. The following results were obtained.
EXAMPLE 2 ______________________________________High-density polyethylene                  95    parts8:2 Mixture of zinc oxide and                  5     partsfumaric acid______________________________________Deodorizing test on ammonia:Lapsed time 1 day       2 days  9 days______________________________________Blank       25          25      25Invention   20          15      10productComparative 20          18      15Example______________________________________Deodorizing test on hydrogen sulfide:Lapsed time 1 day       2 days  9 days______________________________________Blank       155         155     155Invention   30          trace   notproduct                         detectedComparative 55          5       1Example______________________________________
EXAMPLE 3 ______________________________________Polypropylene          95    parts5:5 Mixture of zinc carbonate                  5     partsand citric acid______________________________________Deodorizing test on ammonia:Lapsed time 1 day       2 days  9 daysBlank       25          25      25Invention   20          16      12productComparative 20          18      15Example______________________________________Deodorizing test on hydrogen sulfide:Lapsed time 1 day       2 days  9 days______________________________________Blank       155         155     155Invention   25          trace   notproduct                         detectedComparative 55          5       1Example______________________________________
EXAMPLE 4 ______________________________________Polystyrene            98    parts3:7 Mixture of zinc chloride                  2     partsand fumaric acid______________________________________Deodorizing test on ammonia:Lapsed time 1 day        2 days  9 days______________________________________Blank       25           25      25Invention   17           13      7productComparative 20           18      15Example______________________________________Deodorizing test on hydrogen sulfide:Lapsed time 1 day        2 days  9 days______________________________________Blank       55           55      55Invention   40           3       traceproductComparative 55           5       1Example______________________________________
EXAMPLE 5 ______________________________________High-density polyethylene                   99    parts10:3 Mixture of zinc carbonate                   5     partsand trimellitic acid______________________________________Deodorizing test on ammonia:Lapsed time 1 day       2 days  9 days______________________________________Blank       25          25      25Invention   20          15      12productComparative 20          18      15Example______________________________________Deodorizing test on hydrogen sulfide:Lapsed time 1 day       2 days  9 days______________________________________Blank       155         155     155Invention   30          1       notproduct                         detectedComparative 55          5       1Example______________________________________
EXAMPLE 6 ______________________________________High-density polyethylene                   95     parts8:2 Mixture of zinc oxide                   5     partsand trimellitic acid______________________________________Deodorizing test on ammonia:Lapsed time      1 day       2 days   9 days______________________________________Blank      25          25       25Invention  20          15       11productComparative      20          18       15Example______________________________________Deodorizing test on hydrogen sulfide:Lapsed time      1 day       2 days   9 days______________________________________Blank      155         155      155Invention  30          not      notproduct                detected detectedComparative      55          5        1Example______________________________________
EXAMPLE 7 ______________________________________Polypropylene           95    parts5:5 Mixture of zinc carbonate                   5     partsand trimellitic acid______________________________________Deodorizing test on ammonia:Lapsed time 1 day        2 days  9 days______________________________________Blank       25           25      25Invention   20           16      11productComparative 20           18      15Example______________________________________Deodorizing test on hydrogen sulfide:Lapsed time 1 day        2 days  9 days______________________________________Blank       155          155     155Invention   40           3       traceproductComparative 55           5       1Example______________________________________
EXAMPLE 8 ______________________________________Polystyrene            98    parts3:7 Mixture of zinc chloride                  2     partsand trimellitic acid______________________________________Deodorizing test on ammonia:Lapsed time 1 day       2 days  9 days______________________________________Blank       25          25      25Invention   17          13      11productComparative 20          18      15Example______________________________________Deodorizing test on hydrogen sulfide:Lapsed time 1 day       2 days  9 days______________________________________Blank       155         155     155Invention   45          3       notproduct                         detectedComparative 55          5       1Example______________________________________
EXAMPLE 9 ______________________________________High-density polyethylene 99    parts10:3 Mixture of zinc carbonate                     1     partsand an acidic polymer ("NEW FRONTIERMI-400P", trade name; product ofDai-ichi Kogyo Seiyaku Co., Ltd.,Kyoto, Japan)______________________________________Deodorizing test on ammonia:Lapsed time 1 day       2 days  9 days______________________________________Blank       25          25      25Invention   20          15      12productComparative 20          18      15Example______________________________________Deodorizing test on hydrogen sulfide:Lapsed time 1 day       2 days  9 days______________________________________Blank       155         155     155Invention   30          trace   notproduct                         detectedComparative 55          5       1Example______________________________________
EXAMPLE 10 ______________________________________High-density polyethylene 95    parts8:2 Mixture of zinc oxide and                     5     partsan acidic polymer ("TESKYD MRM43",trade name; product of HitachiKasei Polymer Co., Ltd., Tokyo,Japan).______________________________________Deodorizing test on ammonia:Lapsed time 1 day       2 days  9 days______________________________________Blank       25          25      25Invention   20          15      13productComparative 20          18      15Example______________________________________Deodorizing test on hydrogen sulfide:Lapsed time 1 day       2 days  9 days______________________________________Blank       155         155     155Invention   30          trace   notproduct                         detectedComparative 55          5       1Example______________________________________
EXAMPLE 11 ______________________________________Polypropylene            95    parts5:5 Mixture of zinc carbonate                    5     partsand an acidic polymer ("TESKYDMRA-L", trade name; product ofHitachi Kasei Polymer Co., Ltd.,Tokyo, Japan).______________________________________Deodorizing test on ammonia:Lapsed time 1 day       2 days  9 days______________________________________Blank       25          25      25Invention   20          16      12productComparative 20          18      15Example______________________________________Deodorizing test on hydrogen sulfide:Lapsed time 1 day       2 days  9 days______________________________________Blank       155         155     155Invention   25          trace   notproduct                         detectedComparative 55          5       1Example______________________________________
EXAMPLE 12 ______________________________________Polystyrene              98 parts3:7 Mixture of ferrous sulfide                     2 partsand an acidic polymer ("NEW FRONTIERMI-400P", trade name; prouct ofDai-ichi Kogyo Seiyaku Co., Ltd.,Kyoto, Japan)Deodorizing test on ammonia:Lapsed time 1 day       2 days  9 days______________________________________Blank       25          25      25Invention   17          13      10productComparative 20          18      15Example______________________________________Deodorizing test on hydrogen sulfide:Lapsed time 1 day       2 days  9 days______________________________________Blank       55          55      55Invention   40          3       traceproductComparative 55          5       1Example______________________________________
EXAMPLE 13 ______________________________________High-density polyethylene                 95 parts8:2 Mixture of aluminum                  5 partssulfate and an acidic polymer("TESKYD MRM43", trade name;product of Hitachi Kasei PolymerCo., Ltd., Tokyo, Japan).Deodorizing test on ammonia:Lapsed time 1 day       2 days  9 days______________________________________Blank       25          25      25Invention   20          15      12productComparative 20          18      15Example______________________________________Deodorizing test on hydrogen sulfide:Lapsed time 1 day       2 days  9 days______________________________________Blank       155         155     155Invention   30          trace   notproduct                         detectedComparative 55          5       1Example______________________________________
EXAMPLE 14 ______________________________________Polyethylene             95 parts5:3:2 Mixture of zinc carbonate,                     5 partsaluminum sulfate and an acidicpolymer ("TESKYD MRA-L", trade name;product of Hitachi Kasei PolymerCo., Ltd., Tokyo, Japan)Deodorizing test on ammonia:Lapsed time 1 day       2 days  9 days______________________________________Blank       25          25      25Invention   20          16      12productComparative 20          18      15Example______________________________________Deodorizing test on hydrogen sulfide:Lapsed time 1 day       2 days  9 days______________________________________Blank       155         155     155Invention   25          trace   notproduct                         detectedComparative 55          5       1Example______________________________________
EXAMPLE 15 ______________________________________High-density polyethylene               99 parts10:3 Mixture of zinc carbonate                1 partsand aluminum sulfateDeodorizing test on ammonia:Lapsed time 1 day       2 days  9 days______________________________________Blank       25          25      25Invention   20          15      11productComparative 20          18      15Example______________________________________Deodorizing test on hydrogen sulfide:Lapsed time 1 day       2 days  9 days______________________________________Blank       155         155     155Invention   30          1       notproduct                         detectedComparative 55          5       1Example______________________________________
EXAMPLE 16 ______________________________________High-density polyethylene               95 parts8:2 Mixture of zinc oxide and                5 partsaluminum sulfateDeodorizing test on ammonia:Lapsed time 1 day       2 days  9 days______________________________________Blank       25          25      25Invention   20          15      12productComparative 20          18      15Example______________________________________Deodorizing test on hydrogen sulfide:Lapsed time 1 day       2 days  9 days______________________________________Blank       155         155     155Invention   25          1       notproduct                         detectedComparative 55          5       1Example______________________________________
EXAMPLE 17 ______________________________________Polyethylene         95 parts5:5 Mixture of zinc carbonate                5 partsand potassium aluminum sulfateDeodorizing test on ammonia:Lapsed time 1 day       2 days  9 days______________________________________Blank       25          25      25Invention   18          13      10productComparative 20          18      15Example______________________________________Deodorizing test on hydrogen sulfide:Lapsed time 1 day       2 days  9 days______________________________________Blank       155         155     155Invention   35          2       notproduct                         detectedComparative 55          5       1Example______________________________________
EXAMPLE 18 ______________________________________Polystyrene         98 parts3:7 Mixture of zinc chloride                2 partsand aluminum sulfateDeodorizing test on ammonia:Lapsed time 1 day       2 days  9 days______________________________________Blank       25          25      25Invention   17          13      10productComparative 20          18      15Example______________________________________Deodorizing test on hydrogen sulfide:Lapsed time 1 day       2 days  9 days______________________________________Blank       155         155     155Invention   30          1       notproduct                         detectedComparative 55          5       1Example______________________________________
EXAMPLE 20 Seventy parts of polypropylene and 30 parts of a deodorizing ingredient (a 10:3 mixture of zinc acetate and fumaric acid) were mixed together. They were mixed for 2 minutes at 1,500 rpm in a Henschel mixer and then kneaded in a 40-mm extruder (L/D: 28; C.R.: 3.1; Dulmage screw; cylinder temperature: 200�-215� C.; screw revolution speed: 90 rpm), thereby obtaining pellet-like deodorizing resin composition of this invention. It was extended to a natural resin to a total volume 10 times it original volume. The thus-extended resin was spun at 200�-215� C. through a spinning machine, followed by stretching at a draw ratio of 3 into fibers of 15 denier. The deodorizing performance of the deodorizing fibers was tested. The following results were obtained.
DEODORIZING TEST ON AMMONIA One gram of the above deodorizing fibers was placed in a 300-ml Erlenmeyer flask, followed by an addition of 10 μl of 28% aqueous ammonia. The outlet of the flask was sealed with paraffin and the aqueous ammonia was allowed to gasify fully. The flask was thereafter stored at 25� C. and upon an elapse of a predetermined time period, the concentration (ppm) of ammonia in the flask was measured by a Kitagawa's probe. The following results were obtained.
DEODORIZING TEST ON HYDROGEN SULFIDE One gram of the above deodorizing fibers was placed in a 300-ml Erlenmeyer flask, followed by addition of 1 ml of an 800 ppm solution of sodium sulfide in water and 0.1 ml of 1N sulfuric acid. The outlet of the flask was sealed with paraffin and the resulting hydrogen sulfide was allowed to gasify fully. The flask was thereafter stored at 25� C. and upon an elapse of a predetermined time period, the concentration (ppm) of hydrogen sulfide in the flask was measured by a Kitagawa's probe. The following results were obtained.
EXAMPLE 21 Thoroughly mixed into a plastisol were 50 parts of a PVC paste resin ("SUMILIT PXN", trade name; product of Sumitomo Chemical Co., Ltd., Osaka, Japan), 20 parts of dioctyl phthalate, 4 parts of a plasticizer of the lactic acid ester type ("C.L.P.", trade name; product of Daihachi Chemical Industry Co., Ltd., Osaka, Japan), 1 part of cadmium-barium base stabilizer, 20 parts of calcium carbonate, 5 parts of zinc oxide, and 20 parts of a mixture which consisted of 20 parts by weight of potassium aluminum sulfate, 15 parts by weight of citric acid and 5 parts by weight of sodium citrate. The plastisol was then coated on one side of a flame-retarded paper sheet to a thickness of 0.2 mm, followed by its gelation at 140� C. for 60 seconds. The thus-coated surface was thereafter printed and embossed to provide a deodorizing PVC sheet material of this invention.
Patent CitationsCited PatentFiling datePublication dateApplicantTitleUS4735972 *Aug 25, 1986Apr 5, 1988Daicel Chemical Industries, Ltd.Polyolefins containing deodorizing metal sulfate powdersUS4757099 *Nov 10, 1986Jul 12, 1988Dainichiseika Color & Chemicals Mfg. Co., Ltd.Deodorizing resin compositions and formed deodorizing articles* Cited by examinerReferenced byCiting PatentFiling datePublication dateApplicantTitleUS6358537May 3, 2000Mar 19, 2002Dainichiseika Color & Chemicals Mfg. Co, Ltd.Deodorant and antimicrobial dispersionsUS6555102May 3, 2000Apr 29, 2003Dainichiseika Color & Chemicals Mfg. Co., Ltd.An oxide or hydroxide of an alkaline earth metal; hydrated silica; and a cationic surfactant represented by the formula HO-R-NHCH2CH2OH in which R is a C12-C14 alkylene group.US8127519Jul 14, 2008Mar 6, 2012Stravitz David MMethod of inserting and storing waste for disposalUS8215089Jul 14, 2008Jul 10, 2012David StravitzWaste disposal devicesUS8567157Oct 30, 2009Oct 29, 2013Munchkin, Inc.System for disposing waste packages such as diapersUS8635838Oct 30, 2009Jan 28, 2014Munchkin, Inc.System for disposing waste packages such as diapersUS8647587Oct 30, 2009Feb 11, 2014Munchkin, IncPowder dispensing assembly for a waste containerUS8690017Oct 30, 2009Apr 8, 2014Munchkin, Inc.Powder dispensing assembly for a waste containerUS8739501Oct 30, 2009Jun 3, 2014Munchkin, Inc.System for disposing waste packages such as diapersUS8833592Oct 30, 2009Sep 16, 2014Munchkin, Inc.System and method for disposing waste packages such as diapersClassifications U.S. Classification523/102, 524/423International ClassificationA61L9/01, C08K5/098, A61L9/04, C08K3/00, C08K3/22Cooperative ClassificationC08K3/0091, A61L9/042, C08K5/098, C08K3/22, A61L9/01European ClassificationC08K3/00S4, C08K3/22, A61L9/04B, A61L9/01, C08K5/098Legal EventsDateCodeEventDescriptionApr 26, 2001FPAYFee paymentYear of fee payment: 12May 1, 1997FPAYFee paymentYear of fee payment: 8Apr 7, 1993FPAYFee paymentYear of fee payment: 4RotateOriginal ImageGoogle Home - Sitemap - USPTO Bulk Downloads - Privacy Policy - Terms of Service - About Google Patents - Send FeedbackData provided by IFI CLAIMS Patent Services©2012 Google