| Patent Number |
Title Of Patent |
Date Issued |
| 5414027 |
High melt strength, propylene polymer, process for making it, and use thereof |
May 9, 1995 |
| Disclosed is a normally solid, high molecular weight, non-linear, substantially gel-free, propylene polymer material characterized by high melt strength due to strain hardening which is believed to be caused by free-end long chain branches of the molecular chains forming the polymer.Also |
| 5411994 |
Graft copolymers of polyolefins and a method of producing same |
May 2, 1995 |
| Disclosed are graft copolymers of polyolefins and a method of preparing said graft copolymers. The method comprises irradiating a mass of olefin polymer particles and thereafter treating the mass of particles with a vinyl monomer in liquid form. A nonoxidizing environment is maintained |
| 5410002 |
Process for the gas-phase polymerization of alpha-olefins |
April 25, 1995 |
| The present invention relates to a process for the production of homopolymers of ethylene and copolymers of ethylene with olefins CH.sub.2 .dbd.CHR, wherein R is an alkyl or aryl radical having a number of carbon atoms of from 1 to 10, and having a density greater than 0.86 g/cm.sup.3, |
| 5409992 |
Calenderable blends containing broad molecular weight distribution propylene polymer material |
April 25, 1995 |
| Disclosed are calenderable blends consisting essentially of (A) a heterophasic olefin polymer composition and (B) a broad molecular weight distribution propylene polymer material, and film or sheet materials thereof. |
| 5397836 |
Blends of a graft copolymer of propylene polymer material with a graft copolymer of olefinic rub |
March 14, 1995 |
| Disclosed are blends comprising a graft copolymer of a propylene polymer material, a graft copolymer of olefin rubber material, and optionally an ungrafted olefin rubber, wherein the grafting monomers are selected from the group consisting of (i) aromatic vinyl compounds, (ii) acrylic |
| 5397820 |
Monomeric hindered amine esters of monocarboxylic resin acid and olefin polymer compositions sta |
March 14, 1995 |
| Disclosed are monomeric hindered amine esters of monocarboxylic resin acids and olefin polymer compositions stabilized therewith. |
| 5387749 |
Process for the preparation of linear low density polyethylene |
February 7, 1995 |
| Process for the preparation of LLDPE with improved processability by gas phase polymerization performed in two or more reactors, wherein, whatever the order, in one of the reactors a mixture of ethylene and an alpha-olefin CH.sub.2 .dbd.CHR, where R is an alkyl having 1-10 carbon ato |
| 5371299 |
Process for the preparation of diethers |
December 6, 1994 |
| Preparation of diethers of the formula ##STR1## wherein R is an alkyl, cycloalkyl, aryl, or aralkyl radical, by formation of an unsaturated aldehyde of the formula ##STR2## wherein R is as defined above, by means of an aldol condensation reaction, reduction of said aldehyde t |
| 5371124 |
Radiation-resistance propylene polymer composition and radiation sterilized articles therefrom |
December 6, 1994 |
| Disclosed is a radiation resistant propylene polymer composition comprising a propylene polymer material and generally from about 0.1 to about 5 pph, of the propylene polymer material, of a rosin material. A hindered amine is present when the concentration of the rosin material is low, i |
| 5370813 |
Heat resistant composition of polyphenylene ether and/or polystyrene block copolymer(s) and styr |
December 6, 1994 |
| Disclosed are resin compositions comprising (a) a polyphenylene ether resin, a styrene resin or mixtures thereof, (b) a styrenic grafted propylene polymer material, (c) one or more monoalkenyl aromatic hydrocarbon-conjugated diene block copolymers, hydrogenated products thereof or mi |
| 5369186 |
Alpha olefins functionalized polymers |
November 29, 1994 |
| Disclosed are polymers and copolymers of CH.sub.2 .dbd.CHR alpha olefins where R is hydrogen or a 1-6 carbon atom alkyl radical, containing in the chain from 0.1 to 40 mole % of monomeric units ##STR1## where X is selected from the group consisting of (CH.sub.2).sub.r CH.sub.2 CH |
| 5368927 |
Bonded articles comprising a nonwoven fabric and a polyolefin film and the process for their pre |
November 29, 1994 |
| Articles comprising a nonwoven polypropylene fabric bonded directly to a film of a heterophasic polymer composition comprising:A) a polypropylene homopolymer, or a crystalline copolymer of propylene with ethylene and/or another .alpha.-olefinB) an ethylene-propylene copolymer, andC) a copoly |
| 5368919 |
Propylene polymer compositions containing high melt strength propylene polymer material |
November 29, 1994 |
| Disclosed is a propylene polymer composition consisting essentially of (A) a propylene polymer resin and (B) from 0.05 to 0.2 parts of a normally solid, high molecular weight, gel-free, propylene polymer material having (1) a branching index of less than 1 and significant strain hardenin |
| 5360868 |
Polyolefin compositions having a high balance of stiffness and impact strength |
November 1, 1994 |
| Disclosed are polyolefin compositions comprising (A) a propylene homopolymer or a crystalline copolymer of propylene and ethylene or a C.sub.4-8 alpha-olefin, (B) an olefin polymer composition, and optionally either, (C) a propylene polymer composition or (D) an olefin polymer rubber |
| 5360849 |
Mixtures of bitumen and polymer compositions suitable for the modification of bitumens |
November 1, 1994 |
| A mixture containing bitumen and a polymer composition, characterized in that the polymer composition comprises:A) 10-40 parts by weight of an isotactic propylene homopolymer, or a random copolymer of propylene with ethylene and/or a C.sub.4 -C.sub.10 .alpha.-olefin;B) 0-20 parts by weig |
| 5359027 |
Process for the synthesis of lactic acid polymers in the solid state and products thus obtained |
October 25, 1994 |
| Polymers and copolymers of L(+) and D(-) lactic acid, with high molecular weight and in the absence of catalysts, are prepared by upgrading low molecular weight polymers in the solid state. |
| 5352830 |
Phosphorous organic amides suitable as stabilizers and polymer compositions which comprise them |
October 4, 1994 |
| New phosphorous organic amides of a specific formula and their use as stabilizers for polymers and, other organic materials. |
| 5349016 |
Fibers of graft copolymers having a propylene polymer material backbone |
September 20, 1994 |
| Disclosed are fibers comprising a graft copolymer consisting of a propylene polymer material backbone having graft polymerized thereto an ethylenically unsaturated monomer(s) or a blend of at least two of said graft copolymers. |
| 5346756 |
Nonwoven textile material from blends of propylene polymer material and olefin polymer compositi |
September 13, 1994 |
| Disclosed is a nonwoven textile material comprising fibers of a propylene polymer material blended with an olefin polymer material. |
| 5338801 |
Compositions of propylene polymer materials and olefin polymer materials with reduced gloss |
August 16, 1994 |
| Disclosed is a polyolefin composition comprising (A) a propylene polymer material and (B) an olefin polymer material selected from the group consisting of a partially crosslinked thermoplastic elastomer composition, an olefin copolymer rubber and a mixture thereof.The polyolefin composit |
| 5338764 |
Process for the preparation of foamed propylene polymer articles |
August 16, 1994 |
| Foamed propylene polymer articles are prepared by subjecting pre-foamed beads, that consist essentially of propylene polymers having a melt strength from 5 to 40 cN, to thermoforming by sintering. |
| 5331047 |
Olefin polymer films |
July 19, 1994 |
| Disclosed are films or sheets comprising a blend of 1) a heterophasic olefin polymer composition and 2) a copolymer of ethylene with a CH.sub.2 .dbd.CHR alpha-olefin, where R is a C.sub.1-8 straight or branched alkyl.Coextruded films or sheets and laminates wherein at least one layer is a |
| 5326801 |
Polymer compositions containing organic phosphite stabilizers |
July 5, 1994 |
| New organic phosphites of a specific formula are used as stabilizers for polymers and other organic materials. |
| 5326639 |
Thermoplastic olefin polymer and method of preparing same |
July 5, 1994 |
| Disclosed is a thermoplastic olefin polymer having elastic properties comprisinga) greater than 60 to 85 parts of a crystalline polymer fraction selected from the group consisting of (i) a copolymer of propylene and at least one alpha-olefin, (ii) a polybutene-1, (iii) an ethylene homopo |
| 5324761 |
Monocarboxylic acid esters and olefin polymer composition stabilized therewith |
June 28, 1994 |
| Disclosed are 2,4,6-trialkyl-3-hydroxybenzyl esters of monocarboxylic resin acids and olefin polymer compositions stabilized therewith. |
| 5324755 |
Glass fiber reinforced composition of propylene polymer grafted with styrenic monomer and contai |
June 28, 1994 |
| Disclosed are compositions comprising, (a) a propylene polymer material grafted in the solid state with (i) styrenic polymer and further comprising (ii) ungrafted styrenic polymer, and, optionally (iii) a vinyl comonomer and when the optional vinyl comonomer is used, (iv) styrenic-vi |
| 5324753 |
Process for the preparation of foamed propylene polymer articles |
June 28, 1994 |
| Foamed propylene polymer articles are prepared by subjecting pre-foamed beads, that consist essentially of propylene polymers having a melt strength from 5 to 40 cN, to thermoforming by sintering. |
| 5318842 |
Biaxially oriented propylene polymer film or sheet articles |
June 7, 1994 |
| Disclosed are biaxially oriented film or sheet articles comprising:(a) a base or inner layer of a film or sheet of a crystalline homopolymer of a C.sub.3-10 alpha-olefin monomer or of a certain propylene copolymers; and(b) at least one surface layer of a broad molecular weight distribution |
| 5310794 |
Theromoplastic blends containing graft copolymers of polyacrylates as impact modifiers |
May 10, 1994 |
| Disclosed are blends comprising a propylene polymer material grafted with a polymerizable monomer(s) of a polymer(s) having a Tg greater than 80.degree. C., a propylene polymer material grafted with a polymerizable monomer(s) of a polymer(s) having a Tg less than 20.degree. C., and o |
| 5302454 |
Plasto-elastic polypropylene compositions |
April 12, 1994 |
| Polypropylene compositions having valued plasto-elastic properties, in the form of spheroidal flowable particles with an average diameter included between 500 and 7000 um having the following composition:A) 10-60 parts by weight of homopolymer polypropylene with isotactic index greater t |
| 5300470 |
Components and catalysts for the polymerization of ethylene |
April 5, 1994 |
| Solid catalyst components for the preparation of catalysts capable of producing polymers and copolymers of ethylene with ultra high molecular weight are obtained in the form of particles having an average diameter of less than 10 micrometers, by way of reaction, in the presence of H.sub. |
| 5300365 |
Olefin polymer films |
April 5, 1994 |
| Disclosed are films or sheets comprising an olefin polymer composition which is comprised of(a) from about 10 to 50 parts of a propylene homopolymer having an isotactic index greater than 80, or a copolymer of propylene with ethylene and/or an another alpha-olefin, containing over 80% pr |
| 5298561 |
Propylene polymer composition having good transparency and improved impact resistance |
March 29, 1994 |
| Propylene polymer compositions having good transparency and improved impact resistance at low temperature comprising:a) 70 to 98% by weight crystalline copolymer of ethylene with propylene and/or with an alpha olefin of the formula H.sub.2 C=CHR where R is a C.sub.2-8 linear or branched |
| 5298552 |
Water based adhesive compositions and primers for polyolefins |
March 29, 1994 |
| Predominantly water based adhesive compositions and primers comprising:A) 2 to 50 parts by weight of a solution in a non-ionic surface active agent of one or more chlorinated polyolefins;B) 50 to 98 parts by weight of a component selected from:1) an aqueous dispersion comprising from 35 to 65 pa |
| 5296548 |
Compositions of crystalline propylene polymers having a low seal temperature |
March 22, 1994 |
| Discosed are compositions of crystalline propylene polymers comprising (by weight):A) 30-65% of a copolymer of propylene with a C.sub.4 -C.sub.8 .alpha.-olefin, containing from 98 to 80% propylene;B) 35-70% of a copolymer of propylene with ethylene and optionally from 2 to 10% of a C.sub |
| 5290856 |
Engineering resin-propylene polymer graft composition |
March 1, 1994 |
| Disclosed are resin compositions comprising (a) a polyphenylene ether resin or a polyamide resin or a polyester resin; (b) a glycidyl moiety-styrenic grafted propylene polymer material in combination with a styrenic polymer copolymerized with a glycidyl moiety; optionally (c) (1) one or |
| 5286791 |
Impact modified graft copolymer compositions containing broad molecular weight distribution poly |
February 15, 1994 |
| Disclosed are impact modified graft copolymer compositions comprising (A) from 10 to 90% of a graft copolymer of a propylene polymer material having graft polymerized thereto one or more vinyl monomer(s), (B) from 90 to 10% of at least one broad molecular weight distribution propylene po |
| 5286564 |
Elastoplastic polyolefin compositions |
February 15, 1994 |
| Elastoplastic polyolefin compositions endowed with high flexibility, comprising:A) 10-50 parts by weight of a homopolymer of propylene with isotactic index greater than 80, or a copolymer of propylene with ethylene, another .alpha.-olefin, or combinations thereof, which copolymer contain |
| 5286552 |
Process for the production of propylene polymer films and laminates and products thus obtained |
February 15, 1994 |
| Disclosed are films and laminates which are prepared by known filming or calendering processes using heterophasic propylene polymer compositions comprising:A) 10-60 parts by weight of homopolymer polypropylene having an isotactic index greater than 90, or crystalline copolymer of propyle |
| 5278210 |
Process for the preparation of stabilized polyolefins and products obtained therefrom |
January 11, 1994 |
| Polyolefins stabilized against oxidation phenomena are obtained by using a process comprising the polymerization of monomers by way of a catalyst prepared by reacting an aluminum alkyl compound, and optionally an electron donor compound, with a solid component comprising a Ti compound |
| 5264612 |
Process for the preparation of aryl-substituted propionic acid esters |
November 23, 1993 |
| Disclosed is a process for the preparation of aryl-substituted propionic acid esters having the formula: ##STR1## wherein R and R.sup.1 are a C.sub.1 -C.sub.12 linear or branched alkyl, a C.sub.5 -C.sub.12 cycloalkyl, a C.sub.6 -C.sub.12 aryl or a C.sub.7 -C.sub.12 alkaryl or ara |
| 5260389 |
Process for the preparation of 1,5-hexadiene cyclopolymers having a high content of cyclopentane |
November 9, 1993 |
| Highly crystalline high melting 1,5-hexadiene cyclopolymers are prepared by carrying out the polymerization in the presence of a catalyst comprising a specific Zr or Hf metallocene compound and specific alumoxane compounds. |
| 5256226 |
Process for repairing exposed or damaged parts of a plastic coatings on metal tubing by coating |
October 26, 1993 |
| Disclosed is a process for repairing removed or damaged parts of plastic coating on metal tubing characterized in that the coating material or the adhesive for patches or bands is an adhesive polymer composition comprising by weight:A) from 59% to 94% of polypropylene, propylene/ethylene |
| 5248326 |
Method of treating propylene polymer-containing disposable products after use, and product of en |
September 28, 1993 |
| A method of enhancing the compostability of waste products (i.e., products which have been discarded after use such as diapers) containing one or more propylene polymer materials by exposure to high-energy ionizing radiation in an oxidizing atmosphere, such as air, to improve the rate of |
| 5244855 |
Components and catalysts for the polymerization of olefins |
September 14, 1993 |
| Catalyst components for the polymerization of olefins obtained by reacting a tetravalent titanium halide or halogen alcoholate and an electron-donor compound with a porous polymer support on which is supported a magnesium dihalide or a magnesium compound which does not contain Mg--C bond |
| 5244854 |
Components and catalysts for the polymerization of olefins |
September 14, 1993 |
| Catalyst components for the polymerization of olefins, obtained by reacting a tetravalent titanium halide or halogen alcoholate and an electron-donor compound with a solid comprising a porous metallic oxide containing hydroxyl groups on the surface, on which is supported a magnesium diha |
| 5241100 |
Monocarboxylic acid esters and olefin polymer composition stabilized therewith |
August 31, 1993 |
| Disclosed are 2,4,6-trialkyl-3-hydroxybenzyl esters of monocarboxylic resin acids and olefin polymer compositions stabilized therewith. |
| 5240966 |
Granular colorant and method for preparing the same |
August 31, 1993 |
| A granular colorant for coloring thermoplastic resins such as polypropylene, composed of dye/pigment-containing porous thermoplastic resin grains, which is characterized that a dye/pigment composition containing a dispersing agent and/or a carrier resin having a lower softening point |
| 5238635 |
Process for treatment of particulate olefin polymer, resulting treated particles and method for |
August 24, 1993 |
| Disclosed is a process for treating olefin polymer particles with phosphite- and phosphonite-free compositions consisting essentially of:A. a polyhydric alcohol ester of a hindered phenol derivative of propionic acid having a melting point or melting range below about 130.degree. C.,B. about |
| 5236962 |
Crystalline propylene polymers and copolymers in the form of spherical particles at high porosit |
August 17, 1993 |
| Crystalline polymers and copolymers of propylene in the form of spherical particles having a porosity (expressed in percentage of voids) greater than 15%. These polymers are useful in the preparation of masterbatch containing significant quantities of additives and/or pigments. |
