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Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Inventor:
Park; Chung P.
Address:
Pickerington, OH
No. of patents:
47
Patents:












Patent Number Title Of Patent Date Issued
5567742 Dimensionally-stable polypropylene foam expanded with inorganic blowing agents October 22, 1996
Disclosed is a low density, dimensionally-stable, extruded propylene polymer foam comprising primarily of an expanded propylene polymer material wherein the foam has a blowing agent comprising at least 15 percent by weight of one or more inorganic blowing agents. The propylene polyme
5527573 Extruded closed-cell polypropylene foam June 18, 1996
A closed-cell polypropylene foam, with at least eighty percent closed cells and a foamability characteristic of less than about 1.8 is disclosed. Also disclosed are several methods for making such closed-cell polypropylene foams.
5475037 Amorphous polyester foam December 12, 1995
A low density foam having a density less than 15 pounds per cubic foot (240 kg/m.sup.3) is formed from an amorphous polyethylene terephthalate polymer. An expandable resin composition is also disclosed, comprising an amorphous polyethylene terephthalate polymer and a blowing agent mixtur
5411684 Process for making large cross-section olefinic polymer foam structure blown with 1, 1-difluoroe May 2, 1995
Disclosed is an extruded, unitary, closed-cell olefin polymer foam structure in plank form. The foam structure has a cross-section of 2 or more inches in one dimension and 18 or more inches in the other dimension. The olefin polymer material has a melt index of about 3.5 grams/10 minutes
5407965 Cross-linked ethylenic polymer foam structures and process for making April 18, 1995
Disclosed is a cross-linked ethylenic polymer foam structure of an ethylenic polymer material of a cross-linked, substantially linear ethylenic polymer. The substantially linear ethylenic polymer having in an uncross-linked state has: a) a melt flow ratio, I.sub.10 /I.sub.2, .gtoreq.
5405883 Ethylene polymer foams blown with isobutane and 1,1-difluoroethane and a process for making April 11, 1995
Disclosed is an ethylene polymer foam structure having enhanced processing and physical properties. The foam structure comprises an ethylenic polymer material and a blowing agent of isobutane and 1,1-difluoroethane. Further disclosed is a process for making the foam structure.
5399592 Ethylene polymer foams blown with isobutane and 1,1,1-trifluoroethane or 1,1,1,2-tetrafluoroetha March 21, 1995
Disclosed is an ethylene polymer foam structure having enhanced processing and physical properties. The foam structure comprises an ethylenic polymer material and a blowing agent. The blowing agent has a primary blowing agent of isobutane and a secondary blowing agent of 1,1,1-trifluoroe
5387620 Cross-linked ethylenic polymer foam structures and process for making February 7, 1995
Disclosed is a cross-linked ethylenic polymer foam structure of an ethylenic polymer material of a cross-linked, substantially linear ethylenic polymer. The substantially linear ethylenic polymer having in an uncross-linked state has: a) a melt flow ratio, I.sub.10 /I.sub.2, .gtoreq.
5369136 Foam structures of ethylenic polymer material having enhanced toughness and elasticity and proce November 29, 1994
Disclosed is an ethylenic polymer foam structure comprising an ethylenic polymer material. The ethylenic polymer material contains a substantially linear ethylenic polymer having: a) a melt flow ratio, I.sub.10 /I.sub.2, .gtoreq.5.63; b) a molecular weight distribution, M.sub.w /M.sub.n,
5348795 Process for making a dimensionally-stable open-cell polypropylene foam with organic blowing agen September 20, 1994
Disclosed is a process for making a low density, dimensionally-stable, open-cell, extruded propylene polymer foam comprising primarily an expanded propylene polymer material wherein the foam has a blowing agent comprising greater than 85 percent by weight of one or more organic blowi
5340840 Foam structures of ethylenic polymer material having enhanced toughness and elasticity and proce August 23, 1994
Disclosed is an ethylenic polymer foam structure comprising an ethylenic polymer material. The ethylenic polymer material contains a substantially linear ethylenic polymer having: a) a melt flow ratio, I.sub.10 I.sub.2, .gtoreq.5.63; b) a molecular weight distribution, M.sub.w /M.sub.n,
5288762 Cross-linked ethylenic polymer foam structures and process for making February 22, 1994
Disclosed is a cross-linked ethylenic polymer foam structure of an ethylenic polymer material of a cross-linked, substantially linear ethylenic polymer. The substantially linear ethylenic polymer having in an uncross-linked state has: a) a melt flow ratio, I.sub.10 /I.sub.2, .gtoreq.
5288740 Process for making alkenyl aromatic foam packing bodies with carbon dioxide and/or ethane blowin February 22, 1994
Disclosed is a process for making closed-cell, alkenyl aromatic polymer foam packing bodies. An alkenyl aromatic polymer material is heated to form a melt polymer material. The melt polymer material comprises greater than 50 percent by weight alkenyl aromatic monomeric units. A blowing
5089533 Olefin polymer compositions comprising glycerol monoesters of C.sub.20-24 fatty acids and foamed February 18, 1992
Olefin polymer foams prepared utilizing "soft" blowing agents have improved properties when a small amount of a stability control agent comprising a glycerol monoester of a C.sub.20-24 fatty acid is employed.
4894395 Expandable polyolefin compositions and polyolefin foam preparation process January 16, 1990
The use in otherwise conventional polyolefin extrusion foaming process of a stability control agent, in conjunction with certain binary or tertnary mixed blowing agent systems containing 1,2-dichlorotetrafluoroethane provides closed-cell olefin polymer foam articles having increased maxi
4762860 Alcohol control of lightly crosslinked foamed polymer production August 9, 1988
An expandable ethylenic or styrenic polymer composition for production of lightly crosslinked foamed polymers and a process for controlling the degree of crosslinking of the polymer prior to extrusion foaming. The control is obtained by use of (a) a reversible gas-yielding crosslinking
4734441 Expandable polymeric composition and method March 29, 1988
An expandable alkenyl aromatic polymer composition and methods of preparation are provided. The composition is admixed with a volatile blowing agent and an expansion aid which includes a polyphenylene ether. The composition may be extruded and then expanded by exposure to steam or ho
4722972 Foams of ionically associated blends of styrenic and ethylenic polymers February 2, 1988
Novel foamed thermoplastic resins are disclosed. The foam includes an ionically associated blend containing at least about 60 weight % of a metal salt of a styrene-acrylic acid copolymer and at least 1 weight % of a metal salt of an ethylene-acrylic acid copolymer. The foams typically
4714716 Lightly crosslinked linear olefinic polymer foams and process for making December 22, 1987
A substantially closed-celled linear polyolefin foam is made by melt processing under pressure a linear polyolefin together with a volatile blowing agent and a crosslinking agent and then expanding the polymer. Suitable crosslinking agents, including azido and vinyl functional silane
4705811 Expandable polymeric composition and method November 10, 1987
An expandable alkenyl aromatic polymer composition and methods of preparation are provided. The composition is admixed with a volatile blowing agent and an expansion aid which includes a polyphenylene ether. The composition may be extruded and then expanded by exposure to steam or ho
4694027 Expandable polyolefin compositions and preparation process utilizing isobutane blowing agent September 15, 1987
An expandable polyolefin composition and a method of preparation are provided. Isobutane or mixtures of isobutane with other physical blowing agents are utilized to expand polyolefin compositions which have been modified by the addition of a stability control agent. The composition has
4694026 Polyolefin foam compositions having improved dimensional stability utilizing certain unsaturated September 15, 1987
A process for dimensionally stabilizing low density foamed polyolefins utilizing a dimensionally stabilizing control additive comprising a nitrogen-containing compound (having an unsaturated leg) said compound represented by formulas (I) and (II): ##STR1##
4694025 Alcohol control of lightly crosslinked foamed polymer production September 15, 1987
An expandable ethylenic or styrenic polymer composition for production of lightly crosslinked foamed polymers and a process for controlling the degree of crosslinking of the polymer prior to extrusion foaming. The control is obtained by use of (a) a reversible gas-yielding crosslinking
4689355 Crosslinked silane-functional vinylidene chloride polymer and films or foams therefrom August 25, 1987
A polymeric composition is provided which includes the reaction product of vinylidene chloride, an optional copolymerizable monomer, and an .alpha.,.beta. ethylenically unsaturated silane crosslinking agent. The polymeric reaction product may also be used to form films and coating. The
4681715 Steam expandable polymeric composition and method July 21, 1987
A steam expandable alkenyl aromatic polymer composition and methods of preparation are provided. The composition is mixed with a volatile blowing agent containing, as a primary blowing agent, dichlorodifluoromethane and as a secondary blowing agent, a halogenated hydrocarbon, a hydrocarb
4663361 Expandable polyolefin compositions and preparation process utilizing isobutane blowing agent May 5, 1987
An expandable polyolefin composition and a method of preparation are provided. Isobutane or mixtures of isobutane with other physical blowing agents are utilized to expand polyolefin compositions which have been modified by the addition of a stability control agent. The composition has
4663360 Steam expandable polymeric composition and method May 5, 1987
A steam expandable alkenyl aromatic polymer composition and methods of preparation are provided. The composition is mixed with a volatile blowing agent containing, as a primary blowing agent, dichlorodifluoromethane and as a secondary blowing agent, a halogenated hydrocarbon, a hydrocarb
4661302 Expandable polymeric composition and method April 28, 1987
An expandable alkenyl aromatic polymer composition and methods of preparation are provided. The composition is admixed with a volatile blowing agent and an expansion aid which includes a polyphenylene ether. The composition may be extruded and then expanded by exposure to steam or ho
4652588 Lightly crosslinked polyethylene polystyrene blend foams and process for making March 24, 1987
A polymer foam made from a blend of a low density ethylenic polymer and styrenic polymer utilizing a volatile blowing agent and a free radical generating compound as a crosslinking agent. The free radical generating compound provides light crosslinking and increases the foamability of th
4640933 Expandable polyolefin compositions and preparation process utilizing isobutane blowing agent February 3, 1987
An expandable polyolefin composition and a method of preparation are provided. Isobutane or mixtures of isobutane with other physical blowing agents are utilized to expand polyolefin compositions which have been modified by the addition of a stability control agent. The composition has
4624969 Crosslinked silane-functional vinylidene chloride polymer and films or foams therefrom November 25, 1986
A polymeric composition is provided which includes the reaction product of vinylidene chloride, an optional copolymerizable monomer, and an .alpha.,.beta. ethylenically unsaturated silane crosslinking agent. The polymeric reaction product may also be used to form films and coatings.
4623671 Foams of ionically associated blends of styrenic and ethylenic polymers November 18, 1986
Novel foamed thermoplastic resins are disclosed. The foam includes an ionically associated blend containing at least about 60 weight % of a metal salt of a styrene-acrylic acid copolymer and at least 1 weight % of a metal salt of an ethylene-acrylic acid copolymer. The foams typically
4605682 Lightly crosslinked polyethylene polystyrene blend foams and process for making August 12, 1986
A polymer foam made from a blend of a low density ethylenic polymer and styrenic polymer utilizing a volatile blowing agent and a free radical generating compound as a crosslinking agent. The free radical generating compound provides light crosslinking and increases the foamability of th
4581383 Lightly crosslinked linear olefinic polymer foam blends and process for making April 8, 1986
An expandable blend of a linear olefinic polymer and a crosslinkable polymer for production of lightly crosslinked foamed polymers and a process for the preparation thereof is provided. The presence of a crosslinkable polymer component in the blend increases the melt strength of the
4579701 Method for obtaining low densities with particulate expandable polystyrene April 1, 1986
Low density expanded polystyrene is obtained by extended exposure of particles to atmospheric steam and aging the particles in air. Particles have wrinkled cell walls.
4567209 Foams of ionically associated blends of styrenic and ethylenic polymers January 28, 1986
Novel foamed thermoplastic resins are disclosed. The foam includes an ionically associated blend containing at least about 60 weight % of a metal salt of a styrene-acrylic acid copolymer and at least 1 weight % of a metal salt of an ethylene-acrylic acid copolymer. The foams typically
4554293 Lightly crosslinked linear olefinic polymer foam blends and process for making November 19, 1985
An expandable blend of a linear olefinic polymer and a crosslinkable polymer for production of lightly crosslinked foamed polymers and a process for the preparation thereof is provided. The presence of a crosslinkable polymer component in the blend increases the melt strength of the
4535094 Alkenyl aromatic monomer olefinically unsaturated acid foams and method for the preparation ther August 13, 1985
Highly desirable alkenylaromatic monomer olefinically unsaturated acid foams are prepared by extrusion using as a blowing agent inorganic compounds such as sodium bicarbonate, either alone or in combination with volatile fluid foaming agents.
4532265 Alkenyl aromatic monomer olefinically unsaturated acid foams and method for the preparation ther July 30, 1985
Highly desirable alkenylaromatic monomer olefinically unsaturated acid foams are prepared by extrusion using as a blowing agent inorganic compounds such as sodium bicarbonate, either alone or in combination with volatile fluid foaming agents.
4528300 Process for producing dimensionally stable polyolefin foams using environmentally acceptable blo July 9, 1985
The use in conventional polyolefin extrusion foaming processes of a stability control agent (e.g., stearamide, EAA copolymer, etc.) in conjunction with certain mixed blowing agent systems, the mixed blowing agent system containing 60-95 weight percent of 1-chloro-1,1-difluoroethane o
4395510 Novel olefin polymer compositions and foamed articles prepared therefrom having improved elevate July 26, 1983
Elevated temperature distortion characteristics of freshly prepared olefin polymer foams are substantially improved by employing in the preparation thereof a small amount (e.g., from about 0.15 to about 10 weight percent based on the olefin polymer) of certain selected N-substituted fatt
4368276 Novel olefin polymer compositions and foamed articles prepared therefrom having improved elevate January 11, 1983
Elevated temperature distortion characteristics of freshly prepared olefin polymer foams are substantially improved by employing in the preparation thereof a small amount (e.g., from about 0.15 to about 10 weight percent based on the olefin polymer) of certain selected N-substituted fatt
4347329 Expandable polyolefin compositions and polyolefin foam preparation process August 31, 1982
The use, in an otherwise conventional polyolefin extrusion foaming process, of a stability control agent (e.g., stearamide, EAA copolymer, etc.) in conjunction with certain mixed blowing agent systems (e.g., 5-50 weight percent trichloromonofluoromethane and 50-95 weight percent dich
4331779 Ethylenic polymer foams having improved dimensional stability May 25, 1982
The dimensional stability of relatively unstable substantially closed-cell low density foams of non-ionic ethylenic polymers (e.g., polyethylene, ethylene/vinyl acetate copolymers, etc.) can be notably improved by the incorporation therein (during the preparation thereof) of from about 5
4226946 Polyethylene blend foams having improved compressive strength October 7, 1980
Low density foams from polyethylene blends having substantially closed cell structure and improved compressive strength are prepared using gel-forming extrusion technology. The polyethylene blend comprises from about 35 to about 60 weight percent of low density branched polyethylene in a
4215202 Soft ethylenic polymer blend foams July 29, 1980
Low density, closed cell, soft foam products having dimensional stability are made from ethylenic resin blends having low stiffness by extrusion foaming, wherein the heat plastified gel comprises the ethylene polymer blend and at least one volatile blowing agent. The blends especially
4129530 Soft ethylenic polymer foams December 12, 1978
Low density, closed cell, soft foam products having dimensional stability are made from ethylenic resins having low stiffness, especially comprising copolymers consisting essentially of ethylene and monoethylenically unsaturated non-ionic comonomers, by release to lower pressure of a










 
 
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