EP0672590A2 - Grossraum-Lagerungs- und Transportbehälter - Google Patents

Grossraum-Lagerungs- und Transportbehälter Download PDF

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Publication number
EP0672590A2
EP0672590A2 EP95102710A EP95102710A EP0672590A2 EP 0672590 A2 EP0672590 A2 EP 0672590A2 EP 95102710 A EP95102710 A EP 95102710A EP 95102710 A EP95102710 A EP 95102710A EP 0672590 A2 EP0672590 A2 EP 0672590A2
Authority
EP
European Patent Office
Prior art keywords
container
wall section
lid
set forth
molded
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.)
Withdrawn
Application number
EP95102710A
Other languages
English (en)
French (fr)
Other versions
EP0672590A3 (de
Inventor
Karl John Jwuc
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.)
Goodrich Corp
Original Assignee
BF Goodrich Corp
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 BF Goodrich Corp filed Critical BF Goodrich Corp
Publication of EP0672590A2 publication Critical patent/EP0672590A2/de
Publication of EP0672590A3 publication Critical patent/EP0672590A3/xx
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D43/00—Lids or covers for rigid or semi-rigid containers
    • B65D43/02—Removable lids or covers
    • B65D43/0202—Removable lids or covers without integral tamper element
    • B65D43/0214—Removable lids or covers without integral tamper element secured only by friction or gravity
    • B65D43/0218—Removable lids or covers without integral tamper element secured only by friction or gravity on both the inside and the outside of the mouth of the container
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D21/00—Nestable, stackable or joinable containers; Containers of variable capacity
    • B65D21/02—Containers specially shaped, or provided with fittings or attachments, to facilitate nesting, stacking, or joining together
    • B65D21/0209—Containers specially shaped, or provided with fittings or attachments, to facilitate nesting, stacking, or joining together stackable or joined together one-upon-the-other in the upright or upside-down position
    • B65D21/0217—Containers with a closure presenting stacking elements
    • B65D21/0219—Containers with a closure presenting stacking elements the closure presenting projecting peripheral elements receiving or surrounding the bottom or peripheral elements projecting from the bottom of a superimposed container
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D55/00—Accessories for container closures not otherwise provided for
    • B65D55/02—Locking devices; Means for discouraging or indicating unauthorised opening or removal of closure
    • B65D55/06—Deformable or tearable wires, strings, or strips; Use of seals, e.g. destructible locking pins
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D2543/00—Lids or covers essentially for box-like containers
    • B65D2543/00009—Details of lids or covers for rigid or semi-rigid containers
    • B65D2543/00018—Overall construction of the lid
    • B65D2543/00064—Shape of the outer periphery
    • B65D2543/00074—Shape of the outer periphery curved
    • B65D2543/00092—Shape of the outer periphery curved circular
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D2543/00—Lids or covers essentially for box-like containers
    • B65D2543/00009—Details of lids or covers for rigid or semi-rigid containers
    • B65D2543/00018—Overall construction of the lid
    • B65D2543/00259—Materials used
    • B65D2543/00296—Plastic
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D2543/00—Lids or covers essentially for box-like containers
    • B65D2543/00009—Details of lids or covers for rigid or semi-rigid containers
    • B65D2543/00342—Central part of the lid
    • B65D2543/00398—Reinforcing ribs in the central part of the closure
    • B65D2543/00407—Reinforcing ribs in the central part of the closure radial
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D2543/00—Lids or covers essentially for box-like containers
    • B65D2543/00009—Details of lids or covers for rigid or semi-rigid containers
    • B65D2543/00444—Contact between the container and the lid
    • B65D2543/00481—Contact between the container and the lid on the inside or the outside of the container
    • B65D2543/0049—Contact between the container and the lid on the inside or the outside of the container on the inside, or a part turned to the inside of the mouth of the container
    • B65D2543/00509—Cup
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D2543/00—Lids or covers essentially for box-like containers
    • B65D2543/00009—Details of lids or covers for rigid or semi-rigid containers
    • B65D2543/00444—Contact between the container and the lid
    • B65D2543/00481—Contact between the container and the lid on the inside or the outside of the container
    • B65D2543/00537—Contact between the container and the lid on the inside or the outside of the container on the outside, or a part turned to the outside of the mouth of the container
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D2543/00—Lids or covers essentially for box-like containers
    • B65D2543/00009—Details of lids or covers for rigid or semi-rigid containers
    • B65D2543/00444—Contact between the container and the lid
    • B65D2543/00481—Contact between the container and the lid on the inside or the outside of the container
    • B65D2543/00555—Contact between the container and the lid on the inside or the outside of the container on both the inside and the outside
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D2543/00—Lids or covers essentially for box-like containers
    • B65D2543/00009—Details of lids or covers for rigid or semi-rigid containers
    • B65D2543/00953—Sealing means
    • B65D2543/00962—Sealing means inserted
    • B65D2543/00972—Collars or rings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D2543/00—Lids or covers essentially for box-like containers
    • B65D2543/00009—Details of lids or covers for rigid or semi-rigid containers
    • B65D2543/00953—Sealing means
    • B65D2543/0099—Integral supplemental sealing lips

Definitions

  • the present invention relates to a container assembly and more particularly to a bulk container and lid and to the process of making them.
  • Bulk container assemblies for use in the storage, containing, and transportation of hazardous materials requires that they be light weight, of great mechanical strength, corrosion resistant, and sufficiently strong to withstand the rigors of rough handling, particularly due to the new stringent standards required by the Department of Transportation (D.O.T.). These standards require rigorous and demanding tests including the dropping of the filled container assembly on its lid at any angle without breaking the seal or causing any leakage. These storage container assemblies must be constructed to withstand the rigors of the transportation and storage of nuclear or hazardous materials under adverse conditions.
  • the lid and container construction is configured to provide a better means of distributing any impact forces at the junction of the lid with the uppermost lip or edge of the container by configuring the lid proper, which is the broad circular body portion, to lie in a plane that is lower than the annular or circumferential lip portion of the lid, which lip portion is in effect an upwardly extending ridge with an annular recess that receives fully the uppermost lip of the container.
  • the lid proper which is the broad circular body portion
  • the term bulk container as used herein means a container which has a capacity of over 30 gallons.
  • the annular lip portion of the lid as recessed has an exterior circumferentially extending wall as well as an interior circumferentially extending wall which are substantially co-extensive in height to provide an effective self sealing engagement with the annular lip of the container especially under the condition of being dropped where the annular lip receives an angular impact on the lid.
  • the construction of the present invention has the uppermost lip of the container with an annular abutment that compliments an annular recess on the inner wall of the exterior circumferentially extending wall of the lip portion of the lid to receive a complimentary locking strip or key.
  • the present invention is directed to a container assembly for use in storing and handling hazardous materials and to the method of making such container assemblies.
  • the container assembly has a container which receives the materials for storage or transport and a lid for cooperative engagement therewith to define a closed chamber.
  • the container has a bottom wall, side wall, and an uppermost annular edge that receives the lid.
  • the lid has a circular body portion that terminates into an upwardly extending annular rim which itself has an annular recess extending upwardly into the rim to facilitate the seating and sealing of the lid onto the annular edge of the container.
  • the annular recess divides the annular rim into a circumferentially extending internal wall section, a circumferentially extending external wall section, and a bridging portion that interconnects the external wall section to the internal wall section.
  • the lowermost portions of the upwardly extending rim lies substantially along the same plane that is coincident with the lowermost portion of the adjacent lid body portion.
  • the bulk container portion of the present invention can have a capacity anywhere from about 30 to about 2,000 gallons. Preferably, it will be in a range of about 50 to about 500 gallons. Most commonly, however, it will range from about 80 to about 150 gallons.
  • the standard D.O.T. four (4) foot drop test can be used to good advantage for observing the benefits of this invention.
  • the assembly of container and lid is dropped from a height of four feet onto a floor.
  • the direction is such that the edge of the lid strikes the floor at an angle of about 45° relative to the horizontal plane of the floor.
  • the direction is such that the axis through the center of the container is parallel to the floor.
  • the test container assembly is filled with a suitable filler.
  • noticeable deflection occurs in the conventional lids that causes deformation and leakage.
  • FIG. 1 a molded bulk container assembly which includes a container 11 and a lid member or closure lid 12.
  • the container 11 has a circular bottom wall 14 with a central circular portion 15 and an outer annular portion 16 whose outer periphery merges into an upwardly extending side wall 17 which terminates into a circumferentially extending upper annular edge 18.
  • the upwardly extending side wall 17 tapers slightly outwardly from the bottom wall 14 towards the upper edge 18 to facilitate the nesting of the container 11 for shipment in its empty condition.
  • the annular edge 18 as shown more clearly in Figures 4 and 5 is of greater cross sectional thickness then the sidewall 17 to define an annular lip or shoulder 19 at their juncture.
  • the annular lip 19 is located downwardly from the uppermost top portion of the edge 18 to provide sufficient body and strength to the upper portion of the container.
  • the side wall thickness would be approximately one-half inch (1.27 cm)
  • the shoulder thickness would be approximately .68 of an inch (1.73 cm)
  • the closure lid 12 is of a general circular configuration with an upperside and an underside and with an annular lip member 26 on its outer periphery.
  • the lip member 26 as shown in Figure 4 extends in an upward direction from the adjacent body portion of the lid 12.
  • the lip member 26 has an annular recess 27 that extends upwardly into the body portion thereof to define a circumferentially extending internal wall section 28 and an external circumferentially extending wall section 29 interconnected by a bridging section 30.
  • These wall sections form in cross section ( Figure 4) an inverted U-shaped configuration with the internal wall section 28 and the external wall section 29 being depending leg portions from the upper curvilinear bridging section 30.
  • the interior wall section 28 as seen in Figure 4 has an interior wall surface with a pair of circumferentially extending recesses 32 and 34 to frictionally receive annular gaskets or O-rings 35 and 36, respectively.
  • the exterior wall section 29 has an inner wall surface that receives an annular recess 38 wherein such recess 38 extends into the inner wall surface.
  • the upper edge of such recess 38 is substantially in alignment with the shoulder 19 on the container 11 when the lid 12 is fully seated on the upper annular edge 18 of container 11 as illustrated in Figure 5.
  • the annular recess 27 at the bridging portion 30 of the lip member 26 is hemitoroidal in configuration to mate with the arcuately (in cross section) shaped upper edge portion 18 of the container.
  • the main body portion of lid 12 has an annular portion 40 and a raised central circular portion 41 to facilitate the reception of the bottom wall 14 of a second container as shown in phantom lines in Figure 2 for stacking such container assemblies for shipment or storage.
  • the lip member 26 has a plurality of circumferentially spaced ribs 42 that extend radially inwardly and downwardly to merge with the annular portion 40 of lid 12 to provide a reinforcement therebetween and alignment for stacking.
  • Lip member 26 has an elongated aperture 45 that extends through the external wall section 29 and communicates with the annular recess 27 and the circumferentially extending recess 38 in such external wall section 29.
  • a flexible strip or key 46 introduced into aperture 45 of lid member 12 is received into the annular recess 27 and guided by the annular shoulder 19, side wall 17 adjacent to shoulder 19 and by the annular recess 38 to firmly secure the lid member 12 to the container 11 as such strip 46 progresses into substantially the entire length of the annular recess 38.
  • the flexible key 46 can be fabricated from a thermoplastic resin such as, for example, polyethylene or crosslinked polyethylene.
  • the container as described can be configured to a polygonal shape in cross section, preferably hexagonal to better utilize the available storage space.
  • the plastic container assembly (i.e., lid and container) can be made from any plastic resin that can be molded to the specified shape and dimensions of the present invention.
  • Plastic container assemblies are generally designed for ease of molding, and the shape of the assembly is somewhat limited to shapes which may be formed along the surface of mold members and easily extracted therefrom. The size of the molded product must also be taken into account when considering a molding process. Accordingly, the containers of the present invention are preferably formed by in-mold bulk polymerization from a liquid reaction solution.
  • Reaction injection molding and resin transfer molding (RTM) are forms of in-mold bulk polymerization.
  • RIM and RTM differ from thermoplastic injection molding in that lower pressures and temperatures are employed.
  • the primary distinction between injection molding and RIM/RTM is that a chemical reaction takes place in the mold to transform a monomer solution to a solid, ridged, polymeric state.
  • two liquid reactant streams are combined in a mixhead of a RIM machine, and the mixture is then conveyed into a mold where the polymerization reaction occurs.
  • Typical polymers that are manufactured in the RIM process include polyurethanes, polyureas, and ring-opened norbornene-type polymers.
  • a diisocyanate is supplied in one reactant stream and a polyol is supplied in the other reactant stream.
  • one reactant stream contains a metathesis catalyst, and the other reactant stream contains a metathesis cocatalyst.
  • a norbornene-functional monomer can be present in either stream or in both streams.
  • the container assemblies of the present invention are preferably comprised of bulk polymerized norbornene-functional monomers.
  • norbornene-functional monomer is meant that the monomer is characterized by the presence of at least one norbornene group identified by formula I below which can be substituted or unsubstituted:
  • Preferred species of norbornene-functional monomers are identified by formulas II and II below: wherein R and R1 are independently selected from hydrogen, alkyl, alkylidenyl, aryl groups of 6 to 20 carbon atoms, and saturated and unsaturated cyclic groups containing 2 to 12 carbon atoms formed by R and R1 together with the two ring carbon atoms connected thereto. It will be evident to those skilled in the art that the bond line between the ring carbons and the R and R1 substituents in the formulae above represent a double bond when R and R1 are alkylidenyl.
  • norbornene-functional monomers defined by formulae I, II, and III above include norbornene, dicyclopentadiene, ethylidene norbornene, dihydrodicyclopentadiene, trimers of cyclopentadiene, tetramers of cyclopentadiene, tetracyclododecene, methyltetracyclododecene, ethylidene tetracyclododecene, tetracyclododecadiene, and mixtures of the foregoing monomers.
  • the gel time of the reactive formulation i.e., the time from the mixing of the reactive monomer streams to the time the reactive mixture reaches a gelatin-like consistency
  • the gel time of the reactive formulation can be controlled to allow for the slow fill of the mold under laminar flow conditions. It is necessary that the mold not be filled under turbulent flow so that bubbles do not form, which causes voids in the finished part.
  • This invention contemplates the preparation of homopolymers and copolymers polymerized from one or more of norbornene-functional monomers.
  • Dicyclopentadiene can be copolymerized with up to about 50 percent by weight of a comonomer based upon the total weight of monomer.
  • the comonomer amount employed ranges from about 1 percent to about 25 percent of the total monomer employed. More preferably, the amount of comonomer employed ranges from about 1 percent to about 15 percent by weight based upon the total monomer weight. Most preferably, the amount of comonomer employed ranges from about 5 percent to about 10 percent based upon the total monomer weight.
  • dicyclopentadiene can be copolymerized with monomers such as trimers and tetramers of cyclopentadiene and ethylidene norbornene.
  • the metathesis catalyst system comprises a catalyst and cocatalyst component. Each component can be dissolved in separate streams of the monomer and mixed prior to transfer into the mold cavity.
  • Suitable catalysts include molybdenum and tungsten compound catalysts such as organoammonium molybdates and organoammonium tungstates defined by the formulae below: [R24N] (2y-6x) M x O y ; [R33NH] (2y-6x) M x O y where O represents oxygen; M represents either molybdenum or tungsten; x and y represent the number of M and O atoms in the molecule based on a valence of +6 for molybdenum, +6 for tungsten and -2 for oxygen; and the R2 and R3 radicals can be the same or different and are selected from hydrogen, alkyl, and alkylenyl groups each containing from 1 to 20 carbon atoms and cycloaliphatic groups each containing from 5 to 16 carbon atoms. All of the R2 and R3 radicals cannot be hydrogens.
  • organoammonium molybdates and organoammonium tungstates include tridodecylammonium molybdates and tungstates, methyltricaprilammonium molybdates and tungstates, tri(tridecyl)ammonium molybdates and tungstates and trioctylammonium molybdates and tungstates.
  • 0.1 to 10 mmole of catalyst are used per mole of total monomer.
  • the molar ratio of catalyst to cocatalyst can vary from 200:1 to 1:10.
  • the cocatalyst comprises an alkyl aluminum or alkyl aluminum halide reacted with an alcohol so as to inhibit the reducing power of the cocatalyst.
  • the reaction is rapid and results in the evolution of volatile hydrocarbons such as ethane, if diethyl aluminum is the cocatalyst.
  • alkylaluminum compounds include ethylaluminum dichloride, diethylaluminum monochloride, ethylaluminum sesquichloride, diethylaluminum iodide, ethylaluminum diiodide, ethylaluminum dichloride and the like.
  • hindered alcohols include tertiary alcohols, secondary hindered alcohols, and primary hindered alcohols.
  • hindered secondary alcohols include 2,4-dimethyl-3-propanol, 3,5-dimethyl-4-heptanol and 2,4-diethyl-3-hexanol and the like.
  • hindered primary alcohols include neopentyl alcohol, 2,2-dimethyl-1-butanol, 2,2-diethyl-1-butanol and the like.
  • suitable tertiary alcohols include t-butanol, t-amylalcohol, 3-ethyl-3-pentanol and the like.
  • Primary alcohols and secondary alcohols which can be used in combination with the above hindered alcohols include 2-methyl-1-propanol, 2-ethyl-1-butanol and propanol.
  • the hindered alcohols are used in a ratio of about 60:40 hindered versus unhindered and most preferably, 2,4-dimethyl-3-propanol is used with propanol in such a ratio.
  • the amount of alcohol which is reacted with the aluminum compound is also indicative of the reducing power of the cocatalyst and preferably a ratio of from 1:1 to 1.25:1 total alcohol to aluminum compound is used.
  • a halometal activator can be used with the cocatalysts to supply halide or additional halide to the system.
  • This halometal activator enhances the conversion of monomer to polymer.
  • Suitable activators include chlorosilanes such as dimethylmonochlorosilane, dimethyldichlorosilane, tetrachlorosilane and the like.
  • the amount of activator used falls in the range of 0.05 to 10 millimole per mole of norbornene-functional monomer and preferably low levels are used to prevent localized exotherms.
  • the foregoing catalyst and cocatalyst systems are disclosed in U.S. Patent Nos. 4,380,617; 4,426,502; and 4,943,621 which are herein incorporated by reference.
  • Suitable additives such as fillers, impact modifiers (e.g. elastomers), antioxidants, reinforcing fibers, and pigments can be dissolved or dispersed in the monomer prior to polymerization.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Closures For Containers (AREA)
EP95102710A 1994-02-25 1995-02-24 Grossraum-Lagerungs- und Transportbehälter Withdrawn EP0672590A2 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US201829 1980-10-29
US20182994A 1994-02-25 1994-02-25

Publications (2)

Publication Number Publication Date
EP0672590A2 true EP0672590A2 (de) 1995-09-20
EP0672590A3 EP0672590A3 (de) 1995-09-27

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2549267A1 (de) * 2011-07-21 2013-01-23 SWISSI Process Safety GmbH Probengefäss für kalorimetrische Messungen
EP2575426A4 (de) * 2010-06-07 2013-04-10 Debco Pty Ltd Stapelbare container und entsprechendes verfahren für den transport von pflanzen
WO2019238920A3 (de) * 2018-06-15 2020-02-06 Andocksysteme G. Untch Gmbh Vorrichtung zum lagern und transportieren, insbesondere von pharmazeutischem schüttgut

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2175132A1 (de) * 1972-03-07 1973-10-19 Superfos Emballage As
FR2291103A1 (fr) * 1974-11-18 1976-06-11 Metallurg Plastic Sa Recipient
CH627990A5 (en) * 1978-05-18 1982-02-15 Vogel Bmw Ag Plastic container with lid
US4380617A (en) * 1982-01-20 1983-04-19 The B. F. Goodrich Company Preparation of polymers from cycloolefins
US4494674A (en) * 1984-01-30 1985-01-22 Roof G Wayne Resealable closure and container structure

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2175132A1 (de) * 1972-03-07 1973-10-19 Superfos Emballage As
FR2291103A1 (fr) * 1974-11-18 1976-06-11 Metallurg Plastic Sa Recipient
CH627990A5 (en) * 1978-05-18 1982-02-15 Vogel Bmw Ag Plastic container with lid
US4380617A (en) * 1982-01-20 1983-04-19 The B. F. Goodrich Company Preparation of polymers from cycloolefins
US4494674A (en) * 1984-01-30 1985-01-22 Roof G Wayne Resealable closure and container structure

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2575426A4 (de) * 2010-06-07 2013-04-10 Debco Pty Ltd Stapelbare container und entsprechendes verfahren für den transport von pflanzen
EP2575426A1 (de) * 2010-06-07 2013-04-10 Debco Pty Ltd Stapelbare container und entsprechendes verfahren für den transport von pflanzen
EP2549267A1 (de) * 2011-07-21 2013-01-23 SWISSI Process Safety GmbH Probengefäss für kalorimetrische Messungen
CH705332A1 (de) * 2011-07-21 2013-01-31 Swissi Process Safety Gmbh Probengefäss für kalorimetrische Messungen.
WO2019238920A3 (de) * 2018-06-15 2020-02-06 Andocksysteme G. Untch Gmbh Vorrichtung zum lagern und transportieren, insbesondere von pharmazeutischem schüttgut

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