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WO1993005846A1 - Formulations non noires de caoutchouc synthetique - Google Patents

Formulations non noires de caoutchouc synthetique Download PDF

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Publication number
WO1993005846A1
WO1993005846A1 PCT/CA1992/000451 CA9200451W WO9305846A1 WO 1993005846 A1 WO1993005846 A1 WO 1993005846A1 CA 9200451 W CA9200451 W CA 9200451W WO 9305846 A1 WO9305846 A1 WO 9305846A1
Authority
WO
WIPO (PCT)
Prior art keywords
rubber
composition according
rubber composition
pph
parts
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
Application number
PCT/CA1992/000451
Other languages
English (en)
Inventor
John C. Collyer
John R. Clark
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.)
Minister of National Defence of Canada
Original Assignee
Minister of National Defence of Canada
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 Minister of National Defence of Canada filed Critical Minister of National Defence of Canada
Priority to EP93906313A priority Critical patent/EP0605661A1/fr
Publication of WO1993005846A1 publication Critical patent/WO1993005846A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62D—CHEMICAL MEANS FOR EXTINGUISHING FIRES OR FOR COMBATING OR PROTECTING AGAINST HARMFUL CHEMICAL AGENTS; CHEMICAL MATERIALS FOR USE IN BREATHING APPARATUS
    • A62D5/00—Composition of materials for coverings or clothing affording protection against harmful chemical agents
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
    • C08L23/26—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers modified by chemical after-treatment
    • C08L23/28—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers modified by chemical after-treatment by reaction with halogens or halogen-containing compounds
    • C08L23/283—Iso-olefin halogenated homopolymers or copolymers

Definitions

  • This invention relates to rubber compositions, and in particular to synthetic rubber compositions for use in gas masks and other items requiring CW agent penetration resistance.
  • the basic property which influences the material selection is its impermeability to chemical warfare (CW) agents, specifically H and GB agents.
  • CW chemical warfare
  • H and GB agents specifically H and GB agents.
  • the standard selected for comparison was twenty-four (24) hour
  • the silica employed is a n ⁇ n-dusting precipitated hydrated silica - 97.2% SiO 2 - particle size 100-300 microns, sold under the trade mark Zeosil 175.
  • Zeosil 175. A similar material sold under the trade mark Zeosil 125 may also be employed. The purpose of this component is to maximize Modulus 500% and Tensile strength.
  • the fatty acid cure promoter employed is preferably stearic acid, although other fatty acid cure promoters could also be employed, such as Octoate ® Z, a trademark for a mixed fatty acid cure promoter.
  • the silane coupling agent is one which contains sulfur, such as vinyl mercaptosilane which is
  • bifunctional polysulphide organosilane sold under the trade mark SI-69. This component aids the silica to achieve the required 500% Modulus, i.e. 900-1600 psi, while keeping the Permanent Set at 500% below about 12%.
  • the reinforcing filler is a treated calcined clayanhydrous aluminum silicate treated with a silane
  • DOA DOA
  • microcrystalline wax employed is preferably
  • the metal oxide curing agent employed is zinc oxide.
  • Other curing agents such as lead oxide (Pb 3 O 4 ) could also be employed.
  • a suitable alcohol phosphate is sold under the trade mark Zelec NE which is a neutralized alcohol phosphate.
  • the rubber accelerator per se is selected from
  • Methazate a trade mark for zinc dimethyldithiocarbamate
  • Tetrone A a trade mark for dipentamethylene-thiuram tetrasulfide
  • Robac P25 also a trade mark for dipentamethylene-thiuram tetrasulfide.
  • a process aid such as Strucktol ®
  • an acidic fatty acid may be used with the accelerator in amounts up to about 2.2 pph to lubricate the polymer chain and reduce power requirements of the internal mixer.
  • Low-temperature T2 stiffening may be improved by the inclusion of a suitable plasticizer, e.g. TP-90-B, a trade mark for di(butoxy-ethoxy-ethyl) formal; and diethylene glycol.
  • a suitable plasticizer e.g. TP-90-B, a trade mark for di(butoxy-ethoxy-ethyl) formal; and diethylene glycol.
  • Improved adhesion to metal e.g. aluminum inserts in gas masks may be achieved by including in the
  • the pigments are selected to give an olive-drab colouration to the resulting material.
  • the pigment composition typically comprises finely divided, BIK N-231 (Black) (0.17 pph); Yellow 2087 or 2089 (1.83 - 2.28 pph); and Green 4099 (1.65 - 2.61 pph).
  • Bromobutyl X2 is a trade name for a bromobutyl rubber material available from Polysar of Sarnia, Canada.
  • the various properties of this material cured for about 12 minutes at about 160oC, in the form of slabs and buttons, are provided in table 1 which follows.
  • alcohol phosphate is responsible for lowering the Permanent Set to values within lspecification, i.e. below about 12%, while maintaining the Modulus 500% in specification, i.e. 900 - 1600 psi.
  • Robac P 25 shows an improvement Tensile, Modulus, lower Viscosity, higher Tear - but at a loss of 3 - 4% points in Permanent Set.
  • Formulations A to C exhibit a lack of adhesion to an anodized aluminum surface using one coat of Chemlok #250.
  • a second coat improved adhesion marginally, but still remained unsatisfactory.
  • Formulation D which contains MBTS and. sulphur was found to adhere better to aluminum surfaces.

Landscapes

  • Chemical & Material Sciences (AREA)
  • General Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • General Health & Medical Sciences (AREA)
  • Materials Engineering (AREA)
  • Toxicology (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Compositions Of Macromolecular Compounds (AREA)

Abstract

Formulation non noire de caoutchouc bromobutylique moulable par injection et assurant une protection constante pendant 24 heures contre la pénétration par l'ypérite. A ce titre, elle est tout particulièrement adaptée à l'utilisation dans les masques à gaz. Cette nouvelle formulation de caoutchouc comporte un caoutchouc bromobutylique et des additifs appropriés améliorant les propriétés mécaniques du matériau obtenu. De façon significative, un phosphate d'alcool est compris dans l'accélérateur en une quantité comprise entre 0,5 et 2,1 pph de caoutchouc bromobutylique.
PCT/CA1992/000451 1991-09-23 1992-09-23 Formulations non noires de caoutchouc synthetique Ceased WO1993005846A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP93906313A EP0605661A1 (fr) 1991-09-23 1992-09-23 Formulations non noires de caoutchouc synthetique

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CA2,052,444 1991-09-23
CA 2052444 CA2052444A1 (fr) 1991-09-23 1991-09-23 Formulations de caoutchouc synthetique sans noir de carbone

Publications (1)

Publication Number Publication Date
WO1993005846A1 true WO1993005846A1 (fr) 1993-04-01

Family

ID=4148468

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CA1992/000451 Ceased WO1993005846A1 (fr) 1991-09-23 1992-09-23 Formulations non noires de caoutchouc synthetique

Country Status (3)

Country Link
EP (1) EP0605661A1 (fr)
CA (1) CA2052444A1 (fr)
WO (1) WO1993005846A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109721864A (zh) * 2018-12-18 2019-05-07 安徽潜隆机电科技有限公司 一种高性能防毒面具用橡胶及其制备方法

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1987000914A1 (fr) * 1985-08-02 1987-02-12 Willi Gottlieb Materiaux protecteurs et/ou de camouflage
WO1988002415A1 (fr) * 1986-10-02 1988-04-07 Bata-Schuh-Ag Procede pour enduire au moins d'une couche des bandes continues de simili-tissu et melange de matieres premieres pour produire la couche, produit obtenu et son utilisation
WO1991003379A1 (fr) * 1989-08-29 1991-03-21 Trelleborg Ab Stratifie et vetement de protection fabrique a partir de celui-ci

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1987000914A1 (fr) * 1985-08-02 1987-02-12 Willi Gottlieb Materiaux protecteurs et/ou de camouflage
WO1988002415A1 (fr) * 1986-10-02 1988-04-07 Bata-Schuh-Ag Procede pour enduire au moins d'une couche des bandes continues de simili-tissu et melange de matieres premieres pour produire la couche, produit obtenu et son utilisation
WO1991003379A1 (fr) * 1989-08-29 1991-03-21 Trelleborg Ab Stratifie et vetement de protection fabrique a partir de celui-ci

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109721864A (zh) * 2018-12-18 2019-05-07 安徽潜隆机电科技有限公司 一种高性能防毒面具用橡胶及其制备方法

Also Published As

Publication number Publication date
EP0605661A1 (fr) 1994-07-13
CA2052444A1 (fr) 1993-03-24

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