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3632288 PROCESS FOR DYEING STYRENE POLYMERS  
Expandable styrene polymers in particulate form are suspended in aqueous medium and heated under pressure in the presence of a finely divided, water-insoluble, organic solvent-soluble dye and a...
3619268 LAMINATED ARTICLES COMPRISING A THERMOPLASTIC CORE AND A HIGH DENSITY RIGID POLYURETHANE FOAM COATING  
High density rigid polyurethane foams are employed as coatings for thermoplastic polymers. The resulting laminated articles are useful insulative articles such as beverage coolers, building...
3616162 AUTOGENOUSLY INTERCONNECTED AND COMPRESSED POLYSTYRENE PEARLS  
Objects of expanded polystyrene pearls are made in sandwiches of which the layers differ in their constitution, the size of the pearls, their densities and the like. Such objects are stronger, more...
3615972 EXPANSIBLE THERMOPLASTIC POLYMER PARTICLES CONTAINING VOLATILE FLUID FOAMING AGENT AND METHOD OF FOAMING THE SAME  
Thermoplastic microspheres are prepared which encapsulate a liquid blowing agent. Heating of the microspheres causes expansion. The microspheres are useful for coatings, moldings, plastic smoke,...
3608006 PRODUCTION OF FOAMED POLYOLEFIN COMPOSITE SHEET  
Production of a foamed polyolefin composite sheet, which comprises milling the polyolefin with a cross-linking agent and a blowing agent homogeneously to obtain a composition, moulding the...
3607793 PROCESS FOR FORMING POROUS STRUCTURES  
An improved method is taught for preparing porous structures from olefin polymers by heating a dispersion of such polymers in a hydrocarbon liquid to a temperature above the solution temperature,...
3551360 SELF-EXTINGUISHING STYRENE POLYMER COMPOSITIONS  
3551361 METHOD OF FOAMING AN OLEFIN POLYMER USING STARCH AS A NUCLEATING AGENT  
3549562 PRODUCTION OF ION EXCHANGE RESIN PARTICLES  
3547838 METHOD FOR PRODUCING CELLULAR PLASTIC ARTICLES AND THE ARTICLES PRODUCED THEREBY  
3547843 FOAMED POLYOLEFIN COMPOSITIONS USING POLYAZIDOFORMAMIDES  
3546143 PRODUCTION OF A FOAMED PRODUCT FROM A BLEND OF THERMOPLASTIC POLYMER AND CELLULOSE FIBERS  
3542715 FOAMED STRAND OF AN ORGANIC POLYMERIC MATERIAL  
3542701 ELEMENTARY SULFUR AS FLAME-RETARDANT IN PLASTIC FOAMS  
3526605 EXPANDABLE STYRENE POLYMERS  
3520833 METHOD OF MAKING EXPANDABLE POLYMERS  
3519578 CELLULAR COMPOSITIONS  
3511796 EXTINGUISHING POLYMER COMPOSITIONS CONTAINING TETRABROMOBICYCLONONANE  
3505248 PROCESS FOR PRODUCING EXPANDABLE STYRENE POLYMER PARTICLES  
3505249 FABRICATING EXPANDABLE THERMOPLASTIC RESINOUS MATERIAL  
3505253 EXPANDABLE ALKENYL AROMATIC POLYMERS CONTAINING INCORPORATED EXPANDABLE ALKENYL AROMATIC POLYMERS AND POLYSILOXANE  
3502754 PROCESS OF EXTRUDING A CELLULAR POLYMERIC COMPOSITION  
3501426 DIFFUSION PROCESS FOR MAKING FOAMABLE STYRENE POLYMER GRANULES  
3498365 CASTING MOLD INCLUDING CELLULAR PLASTIC PATTERN WITH FLAME-PREVENTATIVE MATERIAL  
3496123 METHOD FOR THE PRODUCTION OF HIGHLY POROUS OR FINELY CELLULAR POLYSTYRENE  
3494879 PREPARATION OF FREE-FLOWING FOAMABLE POLYSTYRENE BEADS  
3494862 RECOVERY OF HYDROCARBON LIQUIDS  
3493524 AZINE POLYMERS AND PROCESS FOR PREPARING THE SAME  
3492196 BUILT-UP INSULATED STRUCTURE AND METHOD  
3489699 CORE-SHELL GRAFT COPOLYMERS WITH ION EXCHANGE RESIN SHELL  
3488299 METHOD OF PREPARING A SYNTHETIC RESIN FOAM  
3488219 METHOD AND MEANS FOR REMOVAL OF RADIOACTIVE CONTAMINANTS  
3484393 FOAMABLE POLYMER COMPOSITION AND PROCESS OF FOAMING SAME  
3480546 AQUEOUS FOAM CONTAINING A WATERSWELLABLE POLYMER FLAMEPROOFING COMPOSITION AND PROCESS OF MAKING SAME  
3480570 METHOD OF FOAMING POLYMERIC PARTICLES CONTAINING A FOAMING AGENT  
3474050 POLYMER FOAMS REINFORCED WITH POLYAMIDE,POLYESTER AND POLYCARBONATE FIBERS FORMED DURING THE FOAMING PROCESS  
3474048 POLYMER FOAMS REINFORCED WITH GLASS OR ASBESTOS FIBERS AND PROCESS OF MAKING SAME  
3467604 MOISTURE PERMEABLE POLYION COMPLEX-RESINOUS COMPOSITES  
3466353 FOAMED RESIN EXTRUSION PROCESS EMPLOYING MICROENCAPSULATED BLOWING AGENTS  
3465031 FLAME-RETARDING AGENTS  
3462380 SUSPENSION POLYMERIZATION PROCESS FOR VINYL ARYL MONOMERS  
3461191 ELASTIC INSULATING BODIES OF INORGANIC FIBER MATERIAL AND METHOD OF PRODUCING SUCH BODIES  
3458976 ARTICLE OF MANUFACTURE FOR MAKING CHROMATOGRAPHIC SEPARATIONS  
3458483 PRODUCTION OF HIGH MOLECULAR WEIGHT MATERIALS  
3457217 PRODUCT COMPOSED OF A MIXTURE OF EXPANDED SYNTHETIC THERMOPLASTIC BEADS MIXED WITH AND MOLDED WITH MATERIALS HAVING A DIFFERENT DENSITY  
3450650 METHOD OF MAKING POROUS BODIES  
3445404 SELF-EXTINGUISHING ARYL VINYL POLYMER PRODUCTS CONTAINING PERCHLOROPENTACYCLODECANE AND TRIS(2,3-DIBROMOPROPYL)PHOSPHATE  
3445406 PROCESS FOR ELASTICIZING FOAMED POLYSTYRENES AND RESULTANT PRODUCT  
3444283 METHOD FOR DIRECT INJECTION EXTRUSION OF POLYSTYRENE FOAM  
3444104 EXPANDABLE POLYMERS