What is claimed is:
1. A containment system for samples of dangerous goods stored at cryogenic temperatures, comprising:
a bag made of a cryogenically compatible polymer film with a sealing mechanism that will seal the bag when it is actuated;
a porous structural cartridge for holding a plurality of sample receptacles separate from one another, comprising:
a cartridge base with a plurality of sample receptacle apertures for holding the plurality of sample receptacles; and
a cartridge cover that mates with the cartridge base to enclose the plurality of sample receptacle apertures and any sample receptacles held within said plurality of sample receptacle apertures.
2. A containment system as recited in claim 1, wherein the polymer film is selected from the group consisting of Teflon FEP and Kapton polyimide film.
3. A containment system as recited in claim 1, wherein the polymer film is a fluorinated ethylene propylene resin.
4. A containment system as recited in claim 3, wherein the polymer film meets American Society for Testing and Materials Standard Specification D2116-97 for FEP-Fluorocarbon Molding and Extrusion Materials.
5. A containment system as recited in claim 1, wherein the polymer film is comprised of a polyimide film.
6. A containment system as recited in claim 1, wherein the sealing mechanism is a mechanical closure.
7. A containment system as recited in claim 6, wherein the mechanical closure is constructed of two materials with dissimilar coefficients of thermal expansion.
8. A containment system as recited in claim 1, wherein the sealing mechanism is an adhesive joint.
9. A containment system as recited in claim 1, wherein the sealing mechanism is a heat seal.
10. A containment system as recited in claim 1, wherein the structural cartridge is made of a polypropylene polymer compound.
11. A containment system as recited in claim 1, wherein the structural cartridge has sufficient absorbing capacity to absorb the entire contents of all of the plurality of sample receptacles held within the plurality of sample receptacle apertures.
12. A containment system as recited in claim 1, wherein the bag has a handle useful for lowering the system into a specimen chamber of a dewar vessel and for removing the system from the specimen chamber.
13. A containment system as recited in claim 1, wherein the handle is comprised of a loop of the polymer film.
14. A containment system as recited in claim 1, wherein the system is designed and constructed to withstand the standards of UN Class 6.2 certification.
15. A containment system as recited in claim 1, wherein the porous structural cartridge is further comprised of:
one or more additional cartridge bases, each such additional cartridge base having an additional plurality of sample receptacle apertures for holding an additional plurality of sample receptacles and adapted to matingly engage with a bottom of a separate cartridge base to enclose the additional plurality of sample receptacle apertures and any additional sample receptacles held within said plurality of additional sample receptacle apertures.
16. A containment system as recited in claim 15, wherein the cartridge base and the one or more additional cartridge base form a substantially cylindrical shape when stacked together and held within the bag once the sealing mechanism is actuated.
17. A containment system for samples of dangerous goods shipped in a specimen chamber of a portable, insulated shipping container for storing materials at cryogenic temperatures through the use of a liquid cryogen in a dewar vessel that meets the standards of UN Class 6.2 certification, comprising:
a sealed bag made of a cryogenically compatible polymer; and
a porous structural cartridge with a removable lid that encloses a plurality of sample receptacles held separate from one another in a plurality of sample receptacles, the porous structural cartridge being held within the sealed bag;
wherein the structural cartridge has sufficient absorbing capacity to absorb the entire contents of all of the plurality of sample receptacles held within the plurality of sample receptacle apertures.
18. A containment system as recited in claim 17, wherein the cryogenically compatible polymer is selected from the group consisting of a fluorinated ethylene propylene resin or a polyimide film.
19. A containment system as recited in claim 18, wherein the bag has a handle useful for lowering the system into a specimen chamber of a dewar vessel and for removing the system from the specimen chamber.
20. A containment system as recited in claim 19, further comprising:
an additional cartridge base that matingly engages with the structural cartridge which serves as an additional removable lid that encloses an additional plurality of sample receptacles held separate from one another in an additional plurality of sample receptacles apertures, the additional cartridge base having sufficient absorbing capacity to absorb the entire contents of all of the additional plurality of sample receptacles held within the additional plurality of sample receptacle apertures.
21. A dewar vessel assembly that includes a containment system for samples of dangerous goods that meets the standards of UN Class 6.2 certification in an insulated shipping container for storing materials at cryogenic temperatures through the use of a liquid cryogen, comprising:
a dewar vessel having an outer casing and an inner vessel with each having openings at their tops connected together by a neck portion forming an evacuable space between the outer casing and the inner vessel and a dewar opening into the inner vessel;
a specimen chamber held within the inner vessel that extends inside the inner vessel and is accessed through the dewar opening;
a sealed bag made of a cryogenically compatible polymer that is held within the specimen chamber;
a porous structural cartridge with a removable lid that encloses a plurality of sample receptacles held separate from one another in a plurality of sample receptacles, the porous structural cartridge being held within the sealed bag; and
a cryogenically compatible open cell plastic absorbent foam held within the inner vessel between an inner wall of the inner vessel and the specimen chamber;
wherein the specimen chamber is comprised of an open-celled porous thermoplastic material that is cryogenically compatible that acts as a filter to prevent particles or fragments of the absorbent foam from entering into the specimen chamber while allowing a liquid cryogen to pass through the specimen chamber into the absorbent foam and allowing the liquid cryogen in a vapor phase liquid state to pass from the absorbent foam into the specimen chamber;
wherein the structural cartridge has sufficient absorbing capacity to absorb the entire contents of all of the plurality of sample receptacles held within the plurality of sample receptacle apertures.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
What is claimed is:
1. An infrared laser-compatible positive-type image recording material comprising:
a support; and
a photothermosensitive layer formed on the support, wherein the photothermosensitive layer includes an alkali-soluble resin (A), a photothermal converting substance (B), and an ester compound (C) represented by the following General Formula (I), and increases solubility thereof to an alkaline developer as a result of exposure to an infrared laser,
28
wherein, R1 represents a hydrocarbon group having a pKa of R1OH in a range of 3 to 10; and R2 represents a hydrocarbon group or a substituted carbonyl group.
2. The infrared laser-compatible positive-type image recording material according to claim 1, wherein the photothermosensitive layer comprises multiple layers.
3. The infrared laser-compatible positive-type image recording material according to claim 2, wherein the ester compound (C) represented by General Formula (I) is included in at least one of the multiple layers.
4. The infrared laser-compatible positive-type image recording material according to claim 2, wherein the multiple photothermosensitive layers comprise a layer which is formed on the support and soluble in an alkaline developer, and a layer which is formed on the alkali-soluble layer and which is reactive to an infrared laser, and the ester compound (C) represented by General Formula (I) is included in at least the alkali-soluble layer.
5. The infrared laser-compatible positive-type image recording material according to claim 1, wherein the hydrocarbon group represented by R1 in General Formula (I) includes an electron-withdrawing substituent.
6. The infrared laser-compatible positive-type image recording material according to claim 5, wherein the electron-withdrawing substituent is selected from a halogen atom, and cyano, nitro, carboxyl, substituted carbonyl (R4C(O)), and substituted sulfonyl (R5S(O)2) groups.
7. The infrared laser-compatible positive-type image recording material according to claim 1, wherein the ester compound(c) represented by General Formula (I) is a compound further represented by the following General Formula (II),
29
wherein R3 to R5 each represent a hydrogen atom or a hydrocarbon group.
8. The infrared laser-compatible positive-type image recording material according to claim 1, wherein the ester compound(C) represented by General Formula (I) is a compound further represented by the following General Formula (III),
30
wherein Q1 represents a hydrocarbon group, or a substituted oxy, substituted amino, or substituted thio group.
9. The infrared laser-compatible positive-type image recording material according to claim 7, wherein the ester compound(C) represented by General Formula (I) is a compound further represented by the following General Formula (IV),
31
wherein R3 to R5 each represent a hydrogen atom or a hydrocarbon group; and Ar1 represents an aryl group having a pKa of Ar1OH in a range of 3 to 10.
10. The infrared laser-compatible positive-type image recording material according to claim 8, wherein the ester compound(C) represented by General Formula (I) is a compound further represented by the following General Formula (V),
32
wherein Q1 represents a hydrocarbon group, or a substituted oxy, substituted amino, or substituted thio group; and Ar1 represents an aryl group having a pKa of Ar1OH in a range of 3 to 10.
11. The infrared laser-compatible positive-type image recording material according to claim 1, wherein the ester compound(C) represented by General Formula (I) is added in an amount of 0.5 to 30.0% by mass with respect to a total amount of solid contents in the photothermosensitive layer.
12. An infrared laser-compatible positive-type image recording material comprising:
a support;
a first layer which is formed on the support and which is soluble in an alkaline developer; and
a second layer which is formed on the first layer and increases solubility thereof to the alkaline developer as a result of exposure to an infrared laser, wherein
at least one of the first and second layers includes an ester compound represented by the General Formula (I),
33
wherein, R1 represents a hydrocarbon group having a pKa of R1OH in a range of 3 to 10; and R2 represents a hydrocarbon or substituted carbonyl group.
13. The infrared laser-compatible positive-type image recording material according to claim 12, wherein the ester compound represented by General Formula (I) is included in the first layer, which is soluble in an alkaline developer.
14. The infrared laser-compatible positive-type image recording material according to claim 12, wherein at least one layer of the first and second layers includes a photothermal converting substance.
15. The infrared laser-compatible positive-type image recording material according to claim 12, wherein the hydrocarbon group represented by R1 in General Formula (I) includes an electron-withdrawing substituent.
16. The infrared laser-compatible positive-type image recording material according to claim 15, wherein the electron-withdrawing substituent is selected from a halogen atom, and cyano, nitro, carboxyl, substituted carbonyl (R4C(O)), and substituted sulfonyl (R5S(O)2) groups.
17. The infrared laser-compatible positive-type image recording material according to claim 12, wherein the ester compound represented by General Formula (I) is a compound further represented by the following General Formula (II),
34
wherein R3 to R5 each represent a hydrogen atom or a hydrocarbon group.
18. The infrared laser-compatible positive-type image recording material according to claim 12, wherein the ester compound represented by General Formula (I) is a compound further represented by the following General Formula (III),
35
wherein Q1 represents a hydrocarbon group or a substituted oxy, substituted amino, or substituted thio group.
19. The infrared laser-compatible positive-type image recording material according to claim 17, wherein the ester compound represented by General Formula (I) is a compound further represented by the following General Formula (IV),
36
wherein R3 to R5 each represent a hydrogen atom or a hydrocarbon group; and Ar1 represents an aryl group having a pKa of Ar1OH in a range of 3 to 10.
20. The infrared laser-compatible positive-type image recording material according to claim 18, wherein the ester compound represented by General Formula (I) is a compound further represented by the following General Formula (V),
37
wherein Q1 represents a hydrocarbon group or a substituted oxy, substituted amino, or substituted thio group; and Ar1 represents an aryl group having a pKa of Ar1OH in a range of 3 to 10.