121 |
Method for recovering terephthalic acid and ethylene glycol from
polyester materials |
US446014 |
1974-02-26 |
US3952053A |
1976-04-20 |
George E. Brown, Jr.; Richard C. O'Brien |
The process described herein relates to a process for recovering terephthalic acid and ethylene glycol from polyester materials produced from terephthalic acid and ethylene glycol. |
122 |
Preparation of copolyesters |
US3554976D |
1968-07-24 |
US3554976A |
1971-01-12 |
HULL CHARLES F |
UNIFORM COMPOSITION IN POLY(ETHYLENE TEREPHTHALATEAZELATE) IS ACHIEVED BY PREFORMING DIHYDROXYETHYL TEREPHTHALATE, DETERMINING ITS CONCENTRATION OF DIETHYLENE GLYCOL, AND ADDING A QUANTITY OF PREFORMED DIHYDROXYETHYL AZELATE DETERMINED BY REFERENCE TO A TERNARY GRAPH OF GLASS TRANSITION TEMPERATURE DEPRESSION.
|
123 |
|
US869017D |
1968-12-17 |
UST869017I4 |
1969-12-30 |
|
|
124 |
Process for depolymerizing polyethylene-terephthalate to terephthalic acid dimethyl ester |
US43294965 |
1965-02-16 |
US3403115A |
1968-09-24 |
HANS GRUSCHKE; WALTER HAMMERSCHICK; HEINZ MEDEM |
|
125 |
Process for converting scrap polyester into active prepolymer particles followed by powder build-up to high molecular weights |
US45721665 |
1965-05-19 |
US3344091A |
1967-09-26 |
RUSSIN NICHOLAS C; KIBLER CHARLES J; BARKEY KENNETH T |
|
126 |
Polymerization reaction cleanup |
US33209063 |
1963-12-20 |
US3342794A |
1967-09-19 |
BUCHANAN BEN B |
|
127 |
Process for the continuous re-use of polyethylene terephthalate waste |
US31047163 |
1963-09-20 |
US3305495A |
1967-02-21 |
VOM ORDE HANS-OTTO |
|
128 |
Processing semiconductor rods |
US80617459 |
1959-04-13 |
US2913561A |
1959-11-17 |
THEODOR RUMMEL; WOLFGANG KELLER; HANS-FRIEDRICH QUAST |
|
129 |
Treated Walnut Shell Infill For Artificial Turf |
US16327610 |
2017-08-25 |
US20190186082A1 |
2019-06-20 |
Mark A Heinlein |
An infilled artificial turf surface [18] includes a particulate infill [24] with at least a top layer [28] that comprises a mixture of Black walnut shell particles [30] and English walnut shell particles [32], the walnut shell particles [30, 32] having been treated so as to eliminate or substantially remove tree nut allergens that are known to activate allergies in some humans. Preferably, treatment occurs via heat treatment in a rotary furnace, which also rounds and smoothes the particles [30, 32]. Particularly if used in the top layer [28] of a particulate infill [24] of an artificial turf surface [18], the shape and size and proportion of the Black walnut shell particles [30] and the English walnut shell particles [32] provide stability for the resulting turf surface [18], while also being able to absorb water applied thereto, thereby to hold moisture and to provide evaporative cooling of the artificial turf surface [18] for up to about five hours. |
130 |
METHOD FOR RECOVERING INORGANIC FIBRES AT ROOM TEMPERATURE IN COMPOSITE MATERIALS OF FIBRE AND RESIN |
US15750475 |
2016-07-27 |
US20180230285A1 |
2018-08-16 |
Agustín BUENO LOPEZ; Dolores LOZANO CASTELLÓ; Francisco PERUCHO SANCHEZ |
The invention relates to a method by which means inorganic fibres (glass, carbon, aramide, etc.) are recovered from composite materials of fibre and resin, with the significant advantage of working at room temperature. The method comprises the steps of treatment with solvent and separation of the fibre from the residues of degraded resin. |
131 |
COMPOSITE MATERIALS COMPRISING AT LEAST ONE THERMOPLASTIC RESIN AND GRANULAR SHIVE FROM HEMP AND/OR FLAX |
US15562717 |
2016-04-01 |
US20180118902A1 |
2018-05-03 |
Giovanni MILAZZO |
A composite material may include at least one thermoplastic resin; and from 5 to 180 parts by weight of granular shive from hemp and/or flax, with respect to 100 parts by weight of the at least one thermoplastic resin, with particles having an average particle size lower than 0.2 millimeters (mm). A method for the manufacture of a composite material may include: melting the at least one thermoplastic resin; mixing the at least one molten resin with from 5 to 180 parts by weight, with respect to 100 parts by weight of the at least one thermoplastic resin, of granular shive from hemp and/or flax with an average particle size lower than 0.2 mm; and cooling the mixture obtained in order to form the composite material. |
132 |
High-performance, filler-reinforced, recyclable composite materials |
US14987607 |
2016-01-04 |
US09586824B2 |
2017-03-07 |
Dylan J. Boday; Jeannette M. Garcia; James L. Hedrick; Rudy J. Wojtecki |
Polyhexahydrotriazine (PHT) and polyhemiaminal (PHA) materials form highly cross-linked polymers which can be used as binder resins in composite materials. A filler element functionalized with a primary amine group can be covalently bonded to the PHA/PHT polymer resins. Example filler elements include, without limitation, carbon nanotubes, silica materials, carbon and glass fibers, and nanoparticles. Filler materials are incorporated into polymeric materials to improve the mechanical strength or other characteristics of the polymeric material for various applications. Typical composite materials use thermosetting materials that, once set, are intractable. PHT and PHA materials can be reverted to starting materials by exposure to acids. Thus, composite components formed using these materials are recyclable. |
133 |
Reclaimed Polyethylene Composition |
US15190241 |
2016-06-23 |
US20170002169A1 |
2017-01-05 |
John Moncrief Layman; Maggie Gunnerson; Eric Bryan Bond; Hans Schonemann; Kara Williams |
A composition is disclosed that comprises at least about 95 weight percent reclaimed polyethylene. The reclaimed polyethylene comprises less than about 10 ppm Al, less than about 200 ppm Ti, and less than about 5 ppm Zn. The reclaimed polyethylene has a contrast ratio opacity of less than about 70% and the composition is substantially free of odor. |
134 |
METHOD FOR PREPARING SUPERABSORBENT POLYMER |
US15109684 |
2015-01-06 |
US20160332143A1 |
2016-11-17 |
Yu Jin Sim; Eui Duk Kim; Ji Yeon Kim; Choong Hoon Paik; Seok Heon Oh; Min Ho Lee; Dae Keon Choi |
The present invention relates to a method for preparing a superabsorbent polymer. The method for preparing a superabsorbent according to the present invention includes the steps of: polymerizing a monomer composition into a superabsorbent polymer in a polymerization reactor; grinding the obtained superabsorbent polymer; and hydrolyzing the fine particles generated during the process and reusing the same for the monomer composition. |
135 |
HIGH-PERFORMANCE, FILLER-REINFORCED, RECYCLABLE COMPOSITE MATERIALS |
US14987607 |
2016-01-04 |
US20160194472A1 |
2016-07-07 |
Dylan J. BODAY; Jeannette M. GARCIA; James L. HEDRICK; Rudy J. WOJTECKI |
Polyhexahydrotriazine (PHT) and polyhemiaminal (PHA) materials form highly cross-linked polymers which can be used as binder resins in composite materials. A filler element functionalized with a primary amine group can be covalently bonded to the PHA/PHT polymer resins. Example filler elements include, without limitation, carbon nanotubes, silica materials, carbon and glass fibers, and nanoparticles. Filler materials are incorporated into polymeric materials to improve the mechanical strength or other characteristics of the polymeric material for various applications. Typical composite materials use thermosetting materials that, once set, are intractable. PHT and PHA materials can be reverted to starting materials by exposure to acids. Thus, composite components formed using these materials are recyclable. |
136 |
RECYCLING OF BROAD GOODS WITH THERMOPLASTIC STABILIZER MATERIALS |
US14930905 |
2015-11-03 |
US20160052175A1 |
2016-02-25 |
Panagiotis Emanuel George; Kelsi M. Hurley; Erika L. Carter; William L. Carberry |
A method is disclosed for recycling broad goods material into a flaked feed material. The broad goods material includes reinforcement fibers and thermoplastic material. The recycling method includes applying heat and pressure to impregnate the reinforcement fibers at a filament level with the thermoplastic material to form an impregnated fiber material. The method also includes cooling the impregnated fiber material, and cutting the cooled impregnated fiber material into flakes to produce the flaked feed material. |
137 |
Process for Production of Poly(Arylene Sulfide) |
US14135219 |
2013-12-19 |
US20150175748A1 |
2015-06-25 |
Jeffrey S. Fodor; R. Shawn Childress; Kent E. Mitchell; Kendall M. Hurst |
A process for producing a poly(arylene sulfide) polymer comprising (a) polymerizing reactants in a reaction vessel to produce a poly(arylene sulfide) reaction mixture, (b) processing the poly(arylene sulfide) reaction mixture to obtain a poly(arylene sulfide) polymer and a by-product slurry, (c) removing (e.g., evaporating) at least a portion of the by-product slurry to yield salt solids particulates, wherein at least a portion of the evaporating is carried out while simultaneously sizing the salt solids particulates to a desired size. |
138 |
Novel method for removing residual titanium from a polyester solution |
US14377932 |
2012-02-13 |
US20150080496A1 |
2015-03-19 |
Philippe Neyraval; Natalie Soto; Daobing Lin; MingJuan Wang |
The present invention provides a method for reducing level of titanium in an aqueous solution of polyester in a safe and effective way, while avoiding hydrolysis of the polyester. |
139 |
Recycling carbon fibers from epoxy using solvent cracking |
US13814844 |
2012-07-19 |
US08920932B2 |
2014-12-30 |
Georgius Abidal Adam |
Methods of extracting recycling carbon fibers are provided. Method of extracting and recycling carbon fibers with furan-2-carbaldehyde are provided and systems for performing the same are also provided. Compositions comprising resin composites, carbon fibers, and/or furan-2-carbaldehyde are also provided. |
140 |
Asphalt material recycling system and method |
US13930516 |
2013-06-28 |
US08783590B2 |
2014-07-22 |
Robert Zickell; Thomas J. Zickell |
An asphalt roofing material recycling system and method is used to recycle new and used (post consumer) asphalt materials, such as asphalt shingles, rolled roofing and tar paper that may include granules, fibers or other particles. The asphalt material, which may be in bundles, is broken up and separated and then provided to a cooled recycling vessel. Dry ice is added along with the asphalt material to be recycled. The dry ice removes any moisture present and super-cools the material making it brittle and easier to chip and break up. The recycle vessel includes a number of high speed shippers having tulip hear chipping teeth as well as one horizontal mixer element which stirs the material and makes sure all material is ground. The resulting course to fine powder can be separated by screening and stored as power or compressed into bricks or briquettes. |