WO2002068168A3 - Mold release and anti-blocking coating for powder-free natural or synthetic rubber articles - Google Patents

Mold release and anti-blocking coating for powder-free natural or synthetic rubber articles Download PDF

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Publication number
WO2002068168A3
WO2002068168A3 PCT/US2002/002219 US0202219W WO02068168A3 WO 2002068168 A3 WO2002068168 A3 WO 2002068168A3 US 0202219 W US0202219 W US 0202219W WO 02068168 A3 WO02068168 A3 WO 02068168A3
Authority
WO
WIPO (PCT)
Prior art keywords
powder
synthetic rubber
mold release
rubber articles
blocking coating
Prior art date
Application number
PCT/US2002/002219
Other languages
French (fr)
Other versions
WO2002068168A2 (en
Inventor
Li Zhixin
Joseph B Gardner
Chaodong Xiao
John S Thomaides
Yasuo Tokimori
Stanislaw Petrash
Christopher G Gore
Original Assignee
Nat Starch Chem Invest
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
Priority claimed from US09/790,093 external-priority patent/US20020155309A1/en
Application filed by Nat Starch Chem Invest filed Critical Nat Starch Chem Invest
Priority to JP2002567512A priority Critical patent/JP2004523389A/en
Priority to EP02703237A priority patent/EP1373374A2/en
Priority to AU2002236870A priority patent/AU2002236870A1/en
Publication of WO2002068168A2 publication Critical patent/WO2002068168A2/en
Publication of WO2002068168A3 publication Critical patent/WO2002068168A3/en

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
    • C08J5/02—Direct processing of dispersions, e.g. latex, to articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C33/00—Moulds or cores; Details thereof or accessories therefor
    • B29C33/56—Coatings, e.g. enameled or galvanised; Releasing, lubricating or separating agents
    • B29C33/60—Releasing, lubricating or separating agents
    • B29C33/62—Releasing, lubricating or separating agents based on polymers or oligomers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C41/00—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor
    • B29C41/02—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor for making articles of definite length, i.e. discrete articles
    • B29C41/14—Dipping a core
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C41/00—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor
    • B29C41/34—Component parts, details or accessories; Auxiliary operations
    • B29C41/38—Moulds, cores or other substrates
    • A—HUMAN NECESSITIES
    • A41—WEARING APPAREL
    • A41D—OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
    • A41D19/00—Gloves
    • A41D19/0055—Plastic or rubber gloves
    • A41D19/0058—Three-dimensional gloves
    • A41D19/0062—Three-dimensional gloves made of one layer of material
    • 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
    • C08J2307/00—Characterised by the use of natural rubber

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Medicinal Chemistry (AREA)
  • Organic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Dispersion Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Manufacturing & Machinery (AREA)
  • Gloves (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Moulding By Coating Moulds (AREA)
  • Paints Or Removers (AREA)
  • Coating Of Shaped Articles Made Of Macromolecular Substances (AREA)

Abstract

The present invention is directed to a release composition for molds and formers used in the production of natural and synthetic latex articles. The release coating contains a water-borne, high Tg polymer formed from at least one hydrophobic monomer and at least one hydrophilic monomer, where the Tg of the polymer is at least - 10 °C. One advantage of the release composition is that it is compatible with a coagulant solution used in the formation of latex gloves. Articles formed using the release coating have good anti-blocking properties.
PCT/US2002/002219 2001-02-21 2002-01-24 Mold release and anti-blocking coating for powder-free natural or synthetic rubber articles WO2002068168A2 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP2002567512A JP2004523389A (en) 2001-02-21 2002-01-24 Release and non-stick coatings for powder-free natural or synthetic rubber products
EP02703237A EP1373374A2 (en) 2001-02-21 2002-01-24 Mold release and anti-blocking coating for powder-free natural or synthetic rubber articles
AU2002236870A AU2002236870A1 (en) 2001-02-21 2002-01-24 Mold release and anti-blocking coating for powder-free natural or synthetic rubber articles

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US09/790,093 2001-02-21
US09/790,093 US20020155309A1 (en) 2001-02-21 2001-02-21 Mold release and anti-blocking coating for powder-free natural or synthetic rubber articles
US09/882,222 US6784397B2 (en) 2001-02-21 2001-06-15 Mold release and anti-blocking coating for powder-free natural of synthetic rubber articles
US09/882,222 2001-06-15

Publications (2)

Publication Number Publication Date
WO2002068168A2 WO2002068168A2 (en) 2002-09-06
WO2002068168A3 true WO2002068168A3 (en) 2003-02-27

Family

ID=27120994

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2002/002219 WO2002068168A2 (en) 2001-02-21 2002-01-24 Mold release and anti-blocking coating for powder-free natural or synthetic rubber articles

Country Status (4)

Country Link
EP (1) EP1373374A2 (en)
JP (1) JP2004523389A (en)
CN (1) CN1289577C (en)
WO (1) WO2002068168A2 (en)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20030175500A1 (en) * 2002-03-18 2003-09-18 Apala Mukherjee Polymer coating for rubber articles
US7816446B2 (en) 2004-10-01 2010-10-19 Illinois Institute Of Technology Interpenetrated rubber particles and compositions including the same
WO2010023634A2 (en) * 2008-08-27 2010-03-04 Kimberly-Clark Worldwide, Inc. Thin, smooth nitrile rubber gloves
PL2393650T3 (en) 2009-02-05 2014-11-28 Diptech Pte Ltd Production of elastomeric films
CN106366348A (en) * 2016-08-30 2017-02-01 中广核达胜加速器技术有限公司 Rubber irradiation aid
CN107151287B (en) * 2017-05-24 2020-06-02 儒芯微电子材料（上海）有限公司 Cross-linked acrylate copolymer and photoresist thereof
CN110947305A (en) * 2018-09-27 2020-04-03 北京铂阳顶荣光伏科技有限公司 Hollow fiber membrane packaging method and hollow fiber membrane module
CN111016018A (en) * 2019-12-18 2020-04-17 中交第二航务工程局有限公司 Special external mold release agent for non-aqueous reaction type double-component foam polyurethane and preparation method thereof
CN114276729A (en) * 2020-09-17 2022-04-05 顶级手套国际有限公司 Silicone-free polymer coating composition for coating elastomeric articles and method of preparing elastomeric articles coated therewith
CN113185887B (en) * 2021-05-24 2022-05-17 山西吸睛科技有限公司 Hydrophobic/hydrophilic polymer release agent and preparation method and application thereof
CN115895768A (en) * 2021-08-20 2023-04-04 南京瑞润新材料科技有限公司 Demoulding composition for preparation process of medical latex gloves
CN114854477B (en) * 2022-04-27 2023-08-08 重庆渝江压铸有限公司 Silicon-free release agent with excellent release performance and preparation method thereof

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1996025279A1 (en) * 1995-02-14 1996-08-22 Allegiance Corporation A multiple dip process for making a powder-free article
WO1996025278A1 (en) * 1995-02-14 1996-08-22 Avery Dennison Corporation Acrylic emulsion coatings for rubber articles
US5993923A (en) * 1995-02-14 1999-11-30 Avery Dennison Corporation Acrylic emulsion coating for rubber articles
EP1044616A2 (en) * 1999-04-14 2000-10-18 Sumitomo Rubber Industries, Ltd. Acrylic resin glove and internal surface treating agent thereof
EP1086980A1 (en) * 1999-09-21 2001-03-28 National Starch and Chemical Investment Holding Corporation Use of polymer coating for rubber articles
WO2002022721A2 (en) * 2000-09-15 2002-03-21 National Starch And Chemical Investment Holding Corporation Polymer coating for rubber articles

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1996025279A1 (en) * 1995-02-14 1996-08-22 Allegiance Corporation A multiple dip process for making a powder-free article
WO1996025278A1 (en) * 1995-02-14 1996-08-22 Avery Dennison Corporation Acrylic emulsion coatings for rubber articles
US5993923A (en) * 1995-02-14 1999-11-30 Avery Dennison Corporation Acrylic emulsion coating for rubber articles
EP1044616A2 (en) * 1999-04-14 2000-10-18 Sumitomo Rubber Industries, Ltd. Acrylic resin glove and internal surface treating agent thereof
EP1086980A1 (en) * 1999-09-21 2001-03-28 National Starch and Chemical Investment Holding Corporation Use of polymer coating for rubber articles
WO2002022721A2 (en) * 2000-09-15 2002-03-21 National Starch And Chemical Investment Holding Corporation Polymer coating for rubber articles

Also Published As

Publication number Publication date
JP2004523389A (en) 2004-08-05
WO2002068168A2 (en) 2002-09-06
CN1289577C (en) 2006-12-13
EP1373374A2 (en) 2004-01-02
CN1568342A (en) 2005-01-19

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