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1. 发明专利

GB547103A Gas expanded latex 未知
公开(公告)号：GB547103A
公开(公告)日：1942-08-13
申请号：GB267741
申请日：1941-02-27
申请人： RUBATEX PRODUCTS INC
IPC分类号： B29C67/24
摘要： 547,103. Gas-expanded rubber. EXPANDED RUBBER CO., Ltd. (Rubatex Products, Inc.). Feb. 27, 1941, No. 2677. [Class 70] Gas-expanded rubber products are made by subjecting rubber latex or like rubber dispersion containing a vulcanizing agent and ultra-fast accelerator to a neutral gas under pressure without frothing until at least partial coagulation occurs, and allowing vulcanization to proceed, before release of the pressure, sufficiently for the mass to retain the bubbles of gas formed when the pressure is released. Water may be removed during the gassing by using a porous mould and introducing the gas under pressure into the mould. The gassed latex is semi-dried and semi-cured by applied heat in the gassing autoclave and then removed therefrom and finally cured in a mould or in hot air. An example is given using butyl zimate as accelerator. If a hardened product is required a synthetic resin is added to the latex. Specification 358,967 is referred to.

2. 发明专利

GB514944A Improvements in expanded rubber 未知
公开(公告)号：GB514944A
公开(公告)日：1939-11-22
申请号：GB1189538
申请日：1938-04-20
申请人： RUBATEX PRODUCTS INC
摘要： 514,944. Gas-expanded rubber. EXPANDED RUBBER CO., Ltd. (Rubatex Products, Inc.). April 20, 1938, No..11895. [Class 70] A condensed gas, such as solid or liquid carbon dioxide, is heated and vaporised within a sealed chamber containing rubber dough, consisting of natural or synthetic rubber, fillers and sulphur, or in a chamber communicating with a closed chamber containing the dough. When the rubber has been partially vulcanized, the excess gas pressure is released. The temperature is then raised to vulcanization temperature and maintained thereat until vulcanization is complete, or the rubber may'be cooled, removed from the gassing chamber and the expansion and vulcanization completed. An inert gas, such as nitrogen, may be introduced in addition to the carbon dioxide in order to prevent the collapse of the rubber due to diffusion on releasing the pressure. Oxygen is removed from the chamber before introducing the rubber dough, either by evacuation or by replacement by an inert gas.

3. 发明专利

GB737485A Improvements in or relating to method of making cellular rubber 未知
公开(公告)号：GB737485A
公开(公告)日：1955-09-28
申请号：GB3274452
申请日：1952-12-24
申请人： RUBATEX PRODUCTS INC
摘要： 737,485. Moulding cellular rubber. RUBATEX PRODUCTS, Inc. Dec. 24, 1952 [April 3, 1952], No. 32744/52. Classes 70 and 87 (2). A method of producing a vulcanized closed cell cellular expanded rubber article comprises putting into a mould which is expansible in one dimension only, a mix of rubber, a substance which generates a gas on the application of heat, and a vulcanizing agent, subjecting the mix to a temperature sufficient to generate said gas and to cure the rubber, effecting a partial cure of the rubber, permitting the generated gas to expand the mould to a limited extent in said one dimension and to expand said partially cured rubber, and then fully curing said expanded rubber. An expanding mould is preferably used which comprises a substantially rectangular container 10 which is mounted between press platens 11 and 12, the interior mould wall being provided with grooves 13 for the application of a heat resistant grease. The mould is also provided with an inverted pan 15 having sloping sides 16 and a lip 17 which is a close fit in the mould wall. Pressure is limited to about 50 pounds per square inch. Blowing may be effected by the use of a mixture of sodium nitrate and ammonium acetate.

4. 发明专利

CA430833A COLLAPSIBLE MOULD 未知
公开(公告)号：CA430833A
公开(公告)日：1945-10-23
申请号：CA430833D
申请人： RUBATEX PRODUCTS INC
发明人： PFLEUMER HANS

5. 发明专利

CA415220A LEAK PROOF FUEL TANK 未知
公开(公告)号：CA415220A
公开(公告)日：1943-09-14
申请号：CA415220D
申请人： RUBATEX PRODUCTS INC , PFLEUMER HANS
发明人： PFLEUMER HANS

6. 发明专利

GB756649A Improvements in or relating to a process for the manufacture of closed-cell cellular material of natural and/or synthetic rubber 未知
公开(公告)号：GB756649A
公开(公告)日：1956-09-05
申请号：GB2658154
申请日：1954-09-14
申请人： RUBATEX PRODUCTS INC
摘要： In a method of manufacturing a closed cell cellular article of natural and/or synthetic rubber comprising preparing a vulcanizable mix containing a blowing agent, shaping the mix to the desired shape in miniature size and confining in a mould, heating so that the blowing agent generates gas and vulcanization is effected, releasing the vulcanized material while still hot, and allowing it to expand and cool to assume its final size, the mix includes a vulcanization accelerator capable of causing the vulcanization to proceed after a particular time interval without substantial change in tensile strength and modulus of elasticity of the natural and/or synthetic rubber, and the heating is continued for at least said time interval, whereby the expansion and shrinkage of the article when released from the mould is determined only by the amount of blowing agent used, and is substantially independent of the exact period of vulcanization. The vulcanisation accelerator may comprise benzothiazyl disulphide admixed with tetramethyl thiuram disulphide, cyclohexyl-2-benzothiazole sulphenamide admixed with tetramethyl thiuram disulphide, and either alone or in combination, benzyl hexamethylene tetra-ammonium - 2 - benzothiazyl sulphide, dibenzo-thiazyl dimethyl thiourea, diorthotolyl guanidine, and tetra-ethyl thiuram disulphide. In an example, a mixture of GRS synthetic rubber, polystyrene, calcium silicate, coumarone resin, light oil, paraffin wax, stearic acid, zinc oxide, benzothiazyl disulphide, tetramethyl thiuram disulphide, sulphur, and dinitrosopentamethylene tetramine (blowing agent) is formed into shaped pieces and vulcanized in moulds of the same internal size and shape for periods up to 24 minutes. The degrees of expansion and subsequent shrinkage of the vulcanized articles when released from the moulds are found to be substantially constant after a period of 12 minutes.ALSO:In a method of manufacturing a closed-cell cellular article of natural and/or synthetic rubber material in which a vulcanizable mix of the material is prepared containing a blowing agent shaping the mix to the desired shape in minature size and confining in a mould heating the material so that the blowing agent generates gas and vulcanization is effected releasing the vulcanized material while still hot, and allowing it to expand and cool to assume its final size, the mix includes a vulcanization accelerator capable of causing the vulcanization to proceed after a particular time interval without substantial change in tensile strength and modulus of elasticity of the natural and/or synthetic rubber material, and the heating is continued for at least said time interval, whereby the expansion and shrinkage of the article when released from the mould is determined only by the amount of blowing agent used, and is substantially independent of the exact period of vulcanization. The vulcanization accelerator may comprise benzothiazyl disulphide admixed with tetramethyl thiuram disulphide, cyclohexyl-2-benzo-thiazole sulphenamide admixed with tetramethyl thiuram disulphide, and either alone or in combination, benzyl hexamethylene tetra-ammonium-2-benzothiazyl sulphide, dibenzo-thiazyl dimethyl thiourea, diorthotolyl guanidine, example a mixture in parts by weight of GRS synthetic rubber 100, high styrene and tetraethyl thiuram disulphide. In an example a mixture in parts by weight of GRS synthetic rubber 100, high styrene resin 50, calcium silicate 75, coumarone resin 5, light oil 5, paraffin wax 1.5, stearic acid 2, zinc oxide 5, benzothiazyl disulphide 2, tetramethyl thiuram disulphide 0.3 sulphur 3, and dinitroso-pentamethlylene tetramine (blowing agent) 4 is formed into shaped pieces and vulcanized in moulds of the same internal size and shape for periods up to 24 minutes. The degrees of expansion and subsequent shrinkage of the vulcanized articles when released from the moulds are found to be substantially constant after a period of 12 minutes.

7. 发明专利

GB744165A Improvements in or relating to vulcanised closed cell cellular expanded rubbery articles 未知
公开(公告)号：GB744165A
公开(公告)日：1956-02-01
申请号：GB2583652
申请日：1952-10-15
申请人： RUBATEX PRODUCTS INC
摘要： 744,165. Making sheets of cellular expanded rubber. RUBATEX PRODUCTS, Inc. Oct. 15, 1952 [Aug. 30, 1952], No. 25836/52. Classes 70 and 87 (2). A mix of vulcanizable rubbery material, vulcanizing agents and a finely-dispersed substance which on heating generates a gas is put into a mould expandable in one dimension only; the mix is heated to a temperature sufficient to generate said gas and to partly or fully cure the material; the internally-generated gas is permitted to expand the mould and the material to a limited extent in said one dimension; and the expanded material is cooled or allowed to cool whilst it is confined against further expansion. The drawings show a rectangular mould coinprising two recessed aluminium plates 10, 11 into which the rubbery mix is filled. Figs. 3 and 4 show the mould before the mix has been expanded and Fig. 3a after it has been expanded. The longer sides of the mould plates have projecting ledges 26, 27 which lie between U-shaped clamping bars 30 forming two sides of the frame shown in Fig. 6. The other two sides of the frame are constituted by bars 40, 41. To hold the filled mould closed temporarily before it is placed between heated ram-operated platens P, locks 43 are mounted on bars 40, 41 and engage recesses 45 in the mould ends. When the mould has been positioned between the platens the locks are released, the mould is heated, the ram pressure on the platens is released and the mould halves are allowed to expand from the Fig. 3 position to the Fig. 3a position to a limit determined by the bars 30. At least partial curing is effected before the ram pressure is released; if the cure is incomplete before this release it is completed after expansion but before cooling. The mould is removed from the press, cooled in air or water and opened. Shoe soles may thus be made. Side plates 20 prevent escape.of material from the expanded mould. Specification 737,485 is referred to.

8. 发明专利

GB493073A Method of manufacturing cellular or non-cellular rubber sheets 未知
公开(公告)号：GB493073A
公开(公告)日：1938-10-03
申请号：GB931537
申请日：1937-04-01
申请人： RUBATEX PRODUCTS INC
摘要： 493,073. Indiarubber sheets. EXPANDED RUBBER CO., Ltd. (Rubatex Products, Inc.) April 1, 1937, No. 9315. [Class 70] [Also in Group VIII] Ordinary or cellular, i.e. porous, rubber sheets are made by forming a rubber composition into cylindrical sections, Fig. 1, assembling a plurality of the partially vulcanized sections on a common axis, and completing the vulcanization thus forming a cylinder, and then continuously shaving the cylinder to form a sheet, Fig. 4. The sections may be differently or parti-coloured to produce patterned sheets. When making cellular sheet a composition is moulded into sections which are preferably ¥ to 1 inch thick and not over 2 inches wide from inner to outer surface. The sections are arranged with metal disc separators 4, Fig. 2, between them in an autoclave where they are partially vulcanized in nitrogen under pressure as described in Specification 368,967. The sections are then cemented together and finally vulcanized and expanded by means of an open cure.

9. 发明专利

CA519785A RADAR DOME 未知
公开(公告)号：CA519785A
公开(公告)日：1955-12-20
申请号：CA519785D
申请人： RUBATEX PRODUCTS INC
发明人： COOPER LESTER S

10. 发明专利

GB510498A Improvements in the manufacture of expanded rubber 未知
公开(公告)号：GB510498A
公开(公告)日：1939-08-02
申请号：GB3571738
申请日：1938-12-07
申请人： RUBATEX PRODUCTS INC
IPC分类号： B29C67/24 , C08J9/00 , C08J9/12 , C08J9/30 , C08L21/00
摘要： 510,498. Mixing-machines. EXPANDED RUBBER CO., Ltd.. (Rubatex Products, Inc.). Dec. 7, 1938, No. 35717. [Class 86] [Also in Group V] Apparatus for frothing rubber comprises a cylindrical drum and a perforated reciprocating plunger 11. Rubber in the form of a viscous liquid or plastic dough is placed in the drum, filling about one third of the space, an inert gas, e.g., nitrogen, is introduced under pressure, e.g., 100 lbs. per sq. in., and the plunger 11 is reciprocated by suitable mechanism, not shown, for about two hours until a homogeneous froth is produced.

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