AU741202B2 - Elastomeric articles from a blend of polychloroprene and acrylonitrile - Google Patents
Elastomeric articles from a blend of polychloroprene and acrylonitrile Download PDFInfo
- Publication number
- AU741202B2 AU741202B2 AU13114/99A AU1311499A AU741202B2 AU 741202 B2 AU741202 B2 AU 741202B2 AU 13114/99 A AU13114/99 A AU 13114/99A AU 1311499 A AU1311499 A AU 1311499A AU 741202 B2 AU741202 B2 AU 741202B2
- Authority
- AU
- Australia
- Prior art keywords
- polymer
- butadiene
- weight
- parts
- acrylonitrile
- 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.)
- Ceased
Links
- 239000000203 mixture Substances 0.000 title claims description 33
- 229920001084 poly(chloroprene) Polymers 0.000 title claims description 20
- NLHHRLWOUZZQLW-UHFFFAOYSA-N Acrylonitrile Chemical compound C=CC#N NLHHRLWOUZZQLW-UHFFFAOYSA-N 0.000 title claims description 8
- 229920002959 polymer blend Polymers 0.000 claims description 31
- 229920001577 copolymer Polymers 0.000 claims description 30
- 229920000642 polymer Polymers 0.000 claims description 25
- KAKZBPTYRLMSJV-UHFFFAOYSA-N Butadiene Chemical compound C=CC=C KAKZBPTYRLMSJV-UHFFFAOYSA-N 0.000 claims description 22
- 229920001971 elastomer Polymers 0.000 claims description 19
- YACLQRRMGMJLJV-UHFFFAOYSA-N chloroprene Chemical compound ClC(=C)C=C YACLQRRMGMJLJV-UHFFFAOYSA-N 0.000 claims description 16
- 239000000806 elastomer Substances 0.000 claims description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 8
- 239000000178 monomer Substances 0.000 claims description 7
- 238000004073 vulcanization Methods 0.000 claims description 6
- 239000013536 elastomeric material Substances 0.000 claims description 5
- 229920002239 polyacrylonitrile Polymers 0.000 claims description 5
- LIFLRQVHKGGNSG-UHFFFAOYSA-N 2,3-dichlorobuta-1,3-diene Chemical compound ClC(=C)C(Cl)=C LIFLRQVHKGGNSG-UHFFFAOYSA-N 0.000 claims description 3
- IVBPWRJIKBNGEP-UHFFFAOYSA-N 2-bromo-3-chlorobuta-1,3-diene Chemical compound ClC(=C)C(Br)=C IVBPWRJIKBNGEP-UHFFFAOYSA-N 0.000 claims description 3
- 239000003431 cross linking reagent Substances 0.000 claims description 2
- 230000002040 relaxant effect Effects 0.000 claims description 2
- 229920000126 latex Polymers 0.000 description 17
- 239000004816 latex Substances 0.000 description 17
- 239000000463 material Substances 0.000 description 16
- 229920006173 natural rubber latex Polymers 0.000 description 14
- 238000007598 dipping method Methods 0.000 description 10
- 150000002825 nitriles Chemical class 0.000 description 10
- 239000000126 substance Substances 0.000 description 7
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 6
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 6
- 229920002554 vinyl polymer Polymers 0.000 description 6
- -1 poly(2-chloro-1,3butadiene) Polymers 0.000 description 5
- 229920000459 Nitrile rubber Polymers 0.000 description 4
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 4
- 239000004615 ingredient Substances 0.000 description 4
- 230000014759 maintenance of location Effects 0.000 description 4
- 239000003921 oil Substances 0.000 description 4
- 239000003381 stabilizer Substances 0.000 description 4
- 101000952180 Morus alba Mulatexin Proteins 0.000 description 3
- 239000013566 allergen Substances 0.000 description 3
- 229920001519 homopolymer Polymers 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- GVTJVTFUVRQJKK-UHFFFAOYSA-N 2,3-dibromobuta-1,3-diene Chemical compound BrC(=C)C(Br)=C GVTJVTFUVRQJKK-UHFFFAOYSA-N 0.000 description 2
- 239000004971 Cross linker Substances 0.000 description 2
- 229920013624 Tylac Polymers 0.000 description 2
- 230000002009 allergenic effect Effects 0.000 description 2
- 238000005266 casting Methods 0.000 description 2
- 239000000701 coagulant Substances 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 239000012188 paraffin wax Substances 0.000 description 2
- 239000002530 phenolic antioxidant Substances 0.000 description 2
- 230000029058 respiratory gaseous exchange Effects 0.000 description 2
- 230000000087 stabilizing effect Effects 0.000 description 2
- 239000004094 surface-active agent Substances 0.000 description 2
- 229920003051 synthetic elastomer Polymers 0.000 description 2
- 229920002994 synthetic fiber Polymers 0.000 description 2
- 239000011787 zinc oxide Substances 0.000 description 2
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 description 1
- 241000288673 Chiroptera Species 0.000 description 1
- 208000007811 Latex Hypersensitivity Diseases 0.000 description 1
- CERQOIWHTDAKMF-UHFFFAOYSA-N Methacrylic acid Chemical compound CC(=C)C(O)=O CERQOIWHTDAKMF-UHFFFAOYSA-N 0.000 description 1
- VVQNEPGJFQJSBK-UHFFFAOYSA-N Methyl methacrylate Chemical compound COC(=O)C(C)=C VVQNEPGJFQJSBK-UHFFFAOYSA-N 0.000 description 1
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- NTXGQCSETZTARF-UHFFFAOYSA-N buta-1,3-diene;prop-2-enenitrile Chemical compound C=CC=C.C=CC#N NTXGQCSETZTARF-UHFFFAOYSA-N 0.000 description 1
- 239000001110 calcium chloride Substances 0.000 description 1
- 229910001628 calcium chloride Inorganic materials 0.000 description 1
- ZCCIPPOKBCJFDN-UHFFFAOYSA-N calcium nitrate Inorganic materials [Ca+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O ZCCIPPOKBCJFDN-UHFFFAOYSA-N 0.000 description 1
- 230000021523 carboxylation Effects 0.000 description 1
- 238000006473 carboxylation reaction Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000007334 copolymerization reaction Methods 0.000 description 1
- 239000013530 defoamer Substances 0.000 description 1
- 239000012990 dithiocarbamate Substances 0.000 description 1
- 239000003995 emulsifying agent Substances 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002736 nonionic surfactant Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 229910052573 porcelain Inorganic materials 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000012763 reinforcing filler Substances 0.000 description 1
- 239000012748 slip agent Substances 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- WGPCGCOKHWGKJJ-UHFFFAOYSA-N sulfanylidenezinc Chemical compound [Zn]=S WGPCGCOKHWGKJJ-UHFFFAOYSA-N 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 229920001059 synthetic polymer Polymers 0.000 description 1
- 230000003655 tactile properties Effects 0.000 description 1
- 239000000080 wetting agent Substances 0.000 description 1
- BOXSVZNGTQTENJ-UHFFFAOYSA-L zinc dibutyldithiocarbamate Chemical compound [Zn+2].CCCCN(C([S-])=S)CCCC.CCCCN(C([S-])=S)CCCC BOXSVZNGTQTENJ-UHFFFAOYSA-L 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L9/00—Compositions of homopolymers or copolymers of conjugated diene hydrocarbons
- C08L9/02—Copolymers with acrylonitrile
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L11/00—Compositions of homopolymers or copolymers of chloroprene
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L11/00—Compositions of homopolymers or copolymers of chloroprene
- C08L11/02—Latex
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L13/00—Compositions of rubbers containing carboxyl groups
- C08L13/02—Latex
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L13/00—Compositions of rubbers containing carboxyl groups
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Manufacture Of Macromolecular Shaped Articles (AREA)
- Orthopedics, Nursing, And Contraception (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Materials For Medical Uses (AREA)
Description
WO 99/24507 PCT/US98/23640 1 ELASTOMERIC ARTICLES FROM A BLEND OF POLYCHLOROPRENE AND ACRYLONITRILE Field of the Invention This invention relates to shaped elastomeric articles, in particular to gloves, condoms and breather bags, and to polymer blends and polymer blend compositions useful in the preparation of such articles.
Background of the Invention Elastomeric examination and surgeon's gloves as well as condoms and breather bags, dipped products finger cots, catheters, balloons) and cast products tourniquets, sheeting) are currently made from several different polymers. Non-natural rubber latex products have been developed to address the issues related to natural rubber latex allergy. These current materials lack the appropriate properties necessary to serve as a suitable substitute for natural rubber latex. In addition, individual polymers have specific chemical compatibility problems that limit their application in broad markets including health care, laboratory, emergency medical services and food handling.
One such surgical glove is that described in U.S. Patent No. 5,014,362 to Tillotson et al. and in Re. 35,616, which is a reissue of U.S. Patent No.
5,014,362. The glove described therein is a nitrile elastomer glove. More precisely, "nitrile elastomer" is a carboxylated nitrile-butadiene elastomer. The material of the Tillotson glove has a relatively low resilience; when a glove made of such material is stretched, the stress pressure or force per unit area) exerted by the material quickly drops from its initial value. In other words, the material has a high permanent set.
Summary of the Invention This invention provides a blend of a polychloroprene and a nitrile polymer that yields products of equivalent or similar feel and functionality compared to the common natural rubber latex glove. These products provide equal or better feel, comfort and fit than nitrile or vinyl gloves currently available.
Summary of the Invention This invention provides a blend of a polychloroprene and a nitrile polymer that yields products of equivalent or similar feel and functionality compared to the common natural rubber latex glove. These products provide equal or better feel, comfort and fit than nitrile or vinyl gloves currently available.
The invention further provides elastomeric films and shaped articles in film form, which are obtainable from the foregoing polymer blends on vulcanization or curing. Preferred shaped articles include gloves, condoms and breather bats and other dipped products.
i According to one aspect of the present invention there is provided a polymer blend composition comprising: 10 to 90 parts by weight of a chloroprene polymer; and 10 to 90 parts by weight of an acrylonitrile copolymer wherein said acrylonitrile copolymer is a carboxylated copolymer of acrylonitrile and butadiene; said blend further comprising at least one crosslinking agent and at least one vulcanization accelerator; said blend being curable to an elastomer in film form having a tensile strength of at least 9 MPA and an elongation of at least 300%.
According to another aspect of the present invention there i.
provided a shaped elastomeric article comprising a layer of elastomeric material comprising a cured polymer blend composition, wherein said polymer blend composition prior to curing comprises 10 to 90 parts by weight of a chloroprene polymer and 10 to 90 parts by weight of an acrylonitrile copolymer polymer, based on 100 parts by weight of polymer, and has a tensile strength greater than 9 MPA and an elongation greater than 300%, wherein said acrylonitrile copolymer is a carboxylated acrylonitrile-butadene copolymer.
NUS
RPFMc y'
^FF
Advantages of the Invention The polychloroprene and nitrile blended gloves, condoms and. breathing bags of the invention are made from synthetic elastomers and are free of allergenic latex proteins. They are made using processes similar to current manufacturing processes and techniques. The products are resistant to oxygen and ozone.
Such blends yield films that have greater elongation and quicker film rebound compared to the current nitrile or vinyl products available. The blend is also softer at lower temperatures compared to current nitirle products available. The blend is more gasoline and oil resistant than current polychloroprene products available. It is also less permeable to gases than current natural rubber latex products available.
Tactile and physical properties of elastomers and gloves of this invention are similar to those of natural rubber latex and are better than those of other latex derived synthetic elastomers. Materials and articles of this invention have good chemical and puncture resistance, similar to those of other synthetic materials and better than those of natural rubber latex. In essence, materials and articles of this invention have all of the benefits of synthetic materials, and articles, e.g., good chemical resistance, good puncture resistant and no known allergens, and yet feel like natural rubber latex. Materials and WO 99/24507 PCT/US98/23640 3 that materials and gloves of this invention have no unpleasant odor, while nitrile gloves have an unpleasant odor which may bother both users and patients dental patients).
Brief Description of the Drawings The objects and advantages of the invention will become apparent upon a further reading of the detailed description of the preferred embodiments in conjunction with the figures, wherein: Fig. 1 is a graph comparing relaxation of stress over time in an elastomer latex material of this invention with prior art elastomer latex materials.
Fig. 2 is a bar graph showing puncture resistance in an elastomer latex material of this invention and in prior art elastomer latex materials.
Detailed Description of the Preferred Embodiments The invention comprises elastomeric articles, in particular gloves, condoms and breathing bags constructed from a polychloroprene (or chloroprene polymer) and an acrylonitrile copolymer. The terms "polychloroprene" and "chloroprene polymer" are used herein to denote both poly(2-chloro-1,3butadiene) homopolymer and copolymers of said 2-chloro-1,3-butadiene with one or more additional halogenated monomers. Thus, 2-chloro-1,3-butadiene, which is also known as chloroprene, may be copolymerized with one or more monomers selected from the group consisting of 2,3-dichloro-1,3-butadiene or 2,3-dibromo-1,3-butadiene, 2-chloro-3-bromo-3,3-butadiene, 2-bromo-3-chloro- 1,3-butadiene and butadiene. The acrylonitrile copolymer is preferably a carboxylated copolymer of acrylonitrile and butadiene. However, acrylonitrilebutadiene copolymers which are not carboxylated are also useful. Carboxylation is obtained by copolymerization of acrylonitrile and butadiene with a small amount (typically less than 10%) of a monomer such as acrylic acid, or methacrylic acid, or an ester thereof, such as methyl methacrylate.
A polymer blend as herein described, together with additional ingredients will be described below, is vulcanized or cured to yield an elastomer in film form.
The total blended film thickness is about 0.05 50 mils., preferably about 0.1-20 WO 99/24507 PCT/US98/23640 4 mils. The blended film is characterized as having a tensile strength of at least equal to or greater than) 9 MPA, preferably at least 12.5 MPA, and an elongation equal to or greater than 300%, preferably at least 500%. The products are further characterized as having no latex protein allergens, low modulus, high elongation, good tensile strength, high puncture resistance, good UV (ultra-violet) resistance, good chemical resistance, and good film rebound.
The invention also comprises compositions and blending steps useful in producing blended elastomeric products of the types described above.
A general formula of an unvulcanized or uncured polymer blend composition according to this invention is set forth in Table 1. Ingredients other than the polymer blend shown in Table 1 may be conventional.
TABLE 1 Ingredients Parts per Hundred Rubber Polymer Blend 100 Crosslinker 0.05 to 2 Vulcanization Accelerator (primary) 0.10 to Vulcanization Accelerator (secondary) 0.10 to Antidegradant 0.10 to Pigment 0.01 to pH Stabilizer 0.05 to Surfactant Stabilizer 0.00 to Emulsifying Agent 0.01 to Reinforcing Filler 0.00 to Softener 0.00 to Defoamer 0.00 to Polymer blending takes place prior to vulcanization.
In the practice of this invention, a dipping form of desired shape is dipped into either a single polymer blend latex bath containing a polymer blend composition as shown in Table 1, or into two separate polymer latex dipping baths, the first containing one of the polymers of the blend (say polychloroprene WO 99/24507 PCT/US98/23640 copolymer), the second containing the other polymer (say the acrylonitrile copolymer). The desired polymer blend is formed on the dipping form in the latter case. A single bath is preferred. The dipping form is dipped into a coagulant bath and dried before it is dipped into a latex bath, whether a single latex bath or two latex baths are used. The latex coated dipping form may be dipped into a warm water leach bath if desired. The latex coated dipping form (or former) is then heated in an oven to cure the polymer blend latex.
The shape of the dipping form governs the shape of the article obtained.
A glove-shaped dipping form is used to obtain a polymer blend latex glove.
Similarly, a condom-shaped dipping form is used to obtain a condom, and a breather bag-shaped dipping form is used to obtain a breather bag.
Alternatively, films of this invention can be made by casting. Known casting techniques can be used.
A polymer blend as shown in Table 1 above may comprise about 10 to about 90 parts by weight of polychloroprene (homopolymer or copolymer) and about 10 to 90 parts by weight of acrylonitrile copolymer as described above.
The invention is summarized as an elastomeric film article (such as a glove) comprising a layer of elastomeric material which is constructed of a blend of about 10-90 parts by weight polychloroprene (homopolymer or copolymer) and about 10-90 parts by weight acrylonitrile copolymer with a tensile strength greater than 9 MPA and an elongation greater than 300%. Preferred tensile strength is at least 12.5 MPA, and preferred elongation is at least 500%.
This layer of elastomeric material is substantially impermeable to water and water vapor, has a thickness such that it is capable of being stretched to fit securely about a human body member and to conform to the configuration of said human body member, thereby exerting an initial pressure on said human body member, and then relaxing to exert on said body member a reduced pressure, greater than 60% of said initial pressure one minute after being stretched and greater than 50% of said initial pressure ten minutes after being stretched. More particularly, this layer has a thickness from about 0.05 to about mils., preferably from about 0.1 to 20 mils., and constitutes the entire thickness of the article.
W;O 99/24507 PCT/US98/23640 6 More preferably the blend contains about 25-75 parts by weight polychloroprene and about 25-75 parts by weight acrylonitrile butadiene. More preferably the polychloroprene may comprise poly(2-chloro-1,3-butadiene) or a copolymer comprising 2-chloro-1,3-butadiene and one or more of 2,3-dichloro-1, 3-butadiene, 2,3-dibromo-1,3-butadiene, 2-chloro-3-bromo-1,3-butadiene or 2bromo-3-chloro-1,3-butadiene, or 1,3-butadiene. The acrylonitrile copolymer comprises a carboxylated copolymer of acrylonitrile and butadiene.
An elastomeric glove of this invention is characterized as having no latex protein allergens, low modulus, high elongation, high puncture resistance, high cut resistance, good UV (ultra-violet) resistance, good chemical resistance, and good film rebound. Elastomeric films, condoms and breather bags possess these same properties.
Polymer blend elastomers of this invention also exhibit greater oil and chemical resistance (especially to oils and non-polar hydrocarbons) than natural rubber latex and better dexterity compared to nitrile.
An important characteristic of elastomeric polymer blend films of this invention and articles (such as gloves) made therefrom is high stress retention (or low relaxation) when subjected to a strain (or deformation) which remains constant over time. A polymer blend film or article of this invention maintains greater than 60% of its initial stress after one minute and greater than 50% after minutes.
Fig. 1 shows stress retention (as the percentage of initial stress) as a function of time (in minutes) for a polymer blend elastomer of this invention (denoted "NeoPro" in Fig. 1) and prior art elastomers, nitrile, vinyl and natural rubber latex. As Fig. 1 shows, the elastomer of this invention (NeoPro) had better stress retention than either of the other synthetic polymers. Only natural rubber latex exhibited better stress retention. Disadvantages of natural rubber latex, including allergenic tendencies, lower puncture resistance and lower oil resistance are well known.
Fig. 2 shows puncture resistance in polymer blend elastomers of this invention (denoted "NeoPro") and in selected prior art elastomers, vinyl, natural rubber latex and nitrile. Puncture resistance of polymer blend elastomers WO 99/24507 PCT/US98/23640 7 of this invention and of nitrile elastomers are nearly equal. Both have far better puncture resistance than either vinyl or natural rubber latex.
Example of Best Mode Known to Applicant Gloves can be made as follows. A latex material having the formula set forth in Table 2 is prepared. The referenced Parts Per Hundred Rubber (phr) are by weight and are based on dry material. Often, the material is in liquid form at various solid percentages by weight. The sulfur is a crosslinker, the zinc dibutyl dithiocarbamate is an accelerator, the zinc oxide is an accelerator and cure agent, the phenolic antioxidant is an antidegradant, the potassium hydroxide is a pH stabilizer, the stabilizing surfactant is a stabilizer and wetting agent, and the paraffin wax is a softener.
Clean porcelain formers are dipped into a coagulant comprising a mixture of calcium salts calcium nitrate, calcium chloride), water and non-ionic surfactant and dried. Then the formers are dipped into the latex blend (Table 2).
The latex coated formers are then leached dried and cured in an oven for minutes at 235 degrees Fahrenheit. After curing, the coated formers may be leached once again in hot water and then dipped in a slurry containing water and slip agent and dried. The gloves are then stripped from the formers.
If a powder-free product is desired, further processing is required off line.
TABLE 2 Ingredients Parts per Hundred Rubber Polychloroprene Polymer (Neoprene 750) 60.0 Acrylonitrile Polymer (Tylac 68073) 40.0 Sulfur Zinc Dibutyl Dithiocarbamate Zinc Oxide Phenolic Antioxidant Potassium Hydroxide Stabilizing Surfacant(s) Paraffin Wax WO 99/24507 PCT/US98/23640 8 Neoprene 750 was obtained from DuPont Dow Elastomers L.L.C., Wilmington, Delaware. Tylac 68073 was obtained from Reichold Chemicals, Inc., Reserch Triangle Park, North Carolina.
This invention has been described with reference to the preferred embodiments including a best mode and preferred embodiment. It shall be understood that the foregoing description is by way of illustration and not by limitation.
Claims (21)
1. A polymer blend composition comprising: 10 to 90 parts by weight of a chloroprene polymer and (ii) 10 to 90 parts by weight of an acrylonitrile copolymer wherein said .acrylonitrile copolymer is a carboxylated copolymer of acrylonitrile and butadiene; said blend further comprising at least one crosslinking agent and at least one vulcanization accelerator; said blend being curable to an elastomer in film form having a tensile strength of at least 9 MPA and an a elongation of at least 300%.
2. A polymer blend composition according to claim 1, wherein said composition comprises 25 to parts by weight of said chloroprene polymer and 25 to 75 parts by weight of said acrylonitrile polymer.
S3. A polymer blend according to claim 1, wherein said composition comprises 40 to 75 parts by weight of said chloroprene polymer and 25 to 60 parts by weight of said acrylonitrile polymer.
4. A polymer blend composition according to claim 1, wherein said chloroprene polymer is polychloroprene or a copolymer of monomers comprising 2 -chloro-1,3-butadiene and at least one monomer selected from the group consisting of 2 ,3-dichloro-1,3-butadiene,2,3-dibromo-l,3- buta 2-chloro-3-bromo-1, 3 -butadiene, 2-bromo-3-chloro-1,3- b itdiene d 1, 3 -butadiene.
A polymer blend composition according to claim 1, wherein said chloroprene polymer is polychloroprene or a copolymer of monomers comprising 2 -chloro-l,3-butadiene and at least one monomer selected from the group consisting of 2 3 -dichloro-l,3-butadiene, 2,3-dibromo-l,3- butadiene, 2 -chloro-3-bromo-l,3-butadiene, 2-bromo-chloro-l,3- butadiene, and 1,3-butadiene and said acrylonitrile copolymer is a carboxylated copolymer of acrylonitrile and butadiene.
6. A vulcanizate of a composition according to claim 1i.
7. A vulcanizate according to claim 6, said vulcanizate being in the form of a film.
8. A vulcanizate according to claim 7, wherein said cooa film has a thickness from 0.05 to 50 mils.
9. A vulcanizate according to claim 7, wherein said film has a thickness from 0.1 to 20 mils.
A vulcanizate according to claim 7, wherein said film has a tensile strength of at least 9 MPA and an elongation of at least 300%.
11. A vulcanizate according to claim 7, wherein said film has, a tensile strength of at least 12.5 MPA and an elongation of at least 500%.
12. A shaped elastomeric article comprising a layer of elastomeric material comprising a cured polymer blend composition, wherein said polymer blend composition prior to curing comprises 10 to 90 parts by weight of a c.lproprene polymer and 10 to 90 parts by weight of A I' 11 an acrylonitrile copolymer polymer, based on 100 parts by weight of polymer, and has a tensile strength greater than 9 MPA and an elongation greater than 300%, wherein said acrylonitrile copolymer is a carboxylated acrylonitrile-butadiene copolymer.
13. A shaped elastomeric article according to claim 12, wherein said polymer blend composition prior to curing comprises to 85 parts by weight of said chloroprene polymer and 15 to 80 parts by weight of said acrylonitrile polymer.
14. A shaped elastomeric article according to claim 12, wherein said polymer blend comprises 40 to 75 parts by weight of said chloroprene polymer 25 to parts by weight of said acrylonitrile polymer.
15. A shaped elastomeric article according to claim 12, wherein said tensile strength is greater than 12.5 MPA and said elongation is greater than 500%.
16. A shaped elastomeric article according to claim 12, wherein further said layer of elastomeric material is substantially impermeable to water and water vapor, has a thickness such that it is capable of being stretched to fit securely about a human body member and to conform to the configuration of said human body member, thereby exerting an initial pressure on said human body member, and then relaxing to exert on said body member a reduced pressure, greater than of said initial pressure one minute, after being stretched and greater than 50% of said initial pressure ten minutes after being stretched.
17. A shaped elastomeric article according to claim 16, said layer having a thickness from 0.05 to 50 mils.
18. A shaped elastomeric article according to claim 16, said layer having a thickness from 0.1 to 20 mils.
19. A shaped article according to claim 16, said article being a glove.
A shaped article according to claim 16, said article being a condom.
21. A shaped article according to claim 16, said article being a breather bag. DATED this 2 d Day of October 2001 Microflex Corporation By their Patent Attorneys S* CULLEN CO. 0*ge o eoo oooo
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US6474297P | 1997-11-07 | 1997-11-07 | |
US60/064742 | 1997-11-07 | ||
PCT/US1998/023640 WO1999024507A1 (en) | 1997-11-07 | 1998-11-06 | Elastomeric articles from a blend of polychloroprene and acrylonitrile |
Publications (2)
Publication Number | Publication Date |
---|---|
AU1311499A AU1311499A (en) | 1999-05-31 |
AU741202B2 true AU741202B2 (en) | 2001-11-22 |
Family
ID=22057996
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
AU13114/99A Ceased AU741202B2 (en) | 1997-11-07 | 1998-11-06 | Elastomeric articles from a blend of polychloroprene and acrylonitrile |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP1030883A4 (en) |
JP (1) | JP2001522921A (en) |
AU (1) | AU741202B2 (en) |
CA (1) | CA2303375A1 (en) |
ID (1) | ID25890A (en) |
WO (1) | WO1999024507A1 (en) |
Families Citing this family (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6195805B1 (en) * | 1998-02-27 | 2001-03-06 | Allegiance Corporation | Powder free neoprene surgical gloves |
US6000061A (en) * | 1998-11-18 | 1999-12-14 | Pt. Irama Dinamika Latex | Glove made from a blend of chloroprene rubber and a carboxylated synthetic butadiene rubber |
US6451893B1 (en) * | 2001-05-22 | 2002-09-17 | Microflex Corporation | Soft nitrile zinc oxide free medical gloves |
GB0211027D0 (en) * | 2002-05-14 | 2002-06-26 | Ssl Internat | Double-donnable glove |
EP2176338B1 (en) * | 2007-08-09 | 2016-08-03 | Edgewell Personal Care Brands, LLC | Polymer latex compound |
CN102387911B (en) | 2009-02-05 | 2015-03-04 | 狄特科技私人有限公司 | Production of elastomeric films |
RU2550827C2 (en) * | 2013-07-01 | 2015-05-20 | Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Чувашский государственный университет имени И.Н. Ульянова" | Rubber mixture |
RU2547477C2 (en) * | 2013-07-09 | 2015-04-10 | Федеральное государственное унитарное предприятие "Научно-производственное предприятие "Прогресс" (ФГУП "НПП "Прогресс") | Oil-resistant rubber composition |
WO2015006807A1 (en) | 2013-07-16 | 2015-01-22 | Skinprotect Corporation Sdn Bhd | Elastomeric film-forming compositions and articles made from the elastomeric film |
US10626283B2 (en) * | 2013-11-19 | 2020-04-21 | Ansell Limited | Polymer blends of nitrile rubber and polychloroprene |
JP6894381B2 (en) | 2015-04-28 | 2021-06-30 | オーアンドエム ハリヤード インターナショナル アンリミテッド カンパニー | Nitrile rubber gloves containing extensibility regulator |
US10154699B2 (en) | 2015-09-10 | 2018-12-18 | Ansell Limited | Highly chemical resistant glove |
CA3048252A1 (en) * | 2016-12-30 | 2018-07-05 | Skinprotect Corporation Sdn Bhd | Elastomeric film-forming compositions and associated articles and methods |
CN110054819B (en) * | 2019-04-22 | 2021-07-27 | 山东津莱环海医疗科技有限公司 | Neoprene anesthesia gas storage bag |
MY196386A (en) * | 2019-05-23 | 2023-03-28 | Top Glove Int Sdn Bhd | Elastomeric Article |
CN117715969A (en) * | 2021-07-27 | 2024-03-15 | 安塞尔有限公司 | High tear resistant synthetic glove without accelerator |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3943192A (en) * | 1968-03-05 | 1976-03-09 | Polysar Limited | Elastomeric blends |
US4048261A (en) * | 1975-11-10 | 1977-09-13 | The B. F. Goodrich Company | Vulcanizable compositions of a halogen-containing polymer and a diene-nitrile rubber having active halogen cure sites |
US5187232A (en) * | 1989-10-20 | 1993-02-16 | Bayer Aktiengesellschaft | Rubber compounds of polychloroprene and hydrogenated nitrile rubber |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3823024A (en) * | 1972-05-10 | 1974-07-09 | Grace W R & Co | Process for forming a strippable coating |
US5084514A (en) * | 1990-11-14 | 1992-01-28 | Reichhold Chemicals, Inc. | Latex gloves with improved donnability |
ES2208747T4 (en) * | 1995-06-07 | 2004-07-01 | Allegiance Corporation | SURGERY GLOVES MADE FROM NEOPRENE COPOLYMERS. |
-
1998
- 1998-11-06 AU AU13114/99A patent/AU741202B2/en not_active Ceased
- 1998-11-06 WO PCT/US1998/023640 patent/WO1999024507A1/en active IP Right Grant
- 1998-11-06 JP JP2000520509A patent/JP2001522921A/en active Pending
- 1998-11-06 EP EP98956637A patent/EP1030883A4/en not_active Withdrawn
- 1998-11-06 CA CA002303375A patent/CA2303375A1/en not_active Abandoned
- 1998-11-06 ID IDW20000405A patent/ID25890A/en unknown
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3943192A (en) * | 1968-03-05 | 1976-03-09 | Polysar Limited | Elastomeric blends |
US4048261A (en) * | 1975-11-10 | 1977-09-13 | The B. F. Goodrich Company | Vulcanizable compositions of a halogen-containing polymer and a diene-nitrile rubber having active halogen cure sites |
US5187232A (en) * | 1989-10-20 | 1993-02-16 | Bayer Aktiengesellschaft | Rubber compounds of polychloroprene and hydrogenated nitrile rubber |
Also Published As
Publication number | Publication date |
---|---|
AU1311499A (en) | 1999-05-31 |
ID25890A (en) | 2000-11-09 |
JP2001522921A (en) | 2001-11-20 |
WO1999024507A1 (en) | 1999-05-20 |
CA2303375A1 (en) | 1999-05-20 |
EP1030883A1 (en) | 2000-08-30 |
EP1030883A4 (en) | 2005-09-21 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
AU741202B2 (en) | Elastomeric articles from a blend of polychloroprene and acrylonitrile | |
US9926439B2 (en) | Nitrile rubber article having natural rubber characteristics | |
US9579426B2 (en) | Coated elastomeric article | |
JP3253996B2 (en) | Elastomer articles and elastomer liquid solutions | |
CA2224013C (en) | Surgeon's gloves from neoprene copolymers | |
US5399400A (en) | Elastomeric articles | |
WO2001090236A1 (en) | Polymer blends and articles produced therewith | |
EP2183303A1 (en) | Compounding formulations for producing articles from guayule natural rubber | |
EP2702097A1 (en) | Elastomeric article | |
US20220135776A1 (en) | Softer Blended Nitrile Elastomeric Article | |
JP2005002504A (en) | Improved glove made of nitrile-butadiene rubber | |
JP2003336113A (en) | Soft nitrile medical glove without containing zinc oxide | |
MXPA97009975A (en) | Neopr copolymer surgery gloves |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
TC | Change of applicant's name (sec. 104) |
Owner name: MICROFLEX CORPORATION Free format text: FORMER NAME: MICROFLEX MEDICAL CORP. |
|
FGA | Letters patent sealed or granted (standard patent) |