Patent application number | Description | Published |
20090069469 | Nitroxide Compounds for Minimizing Scorch in Crosslinkable Compositions - Scorch is inhibited during the free-radical crosslinking of a crosslinkable polymer, e.g., an EPDM, by incorporating into the polymer before melt processing and crosslinking a scorch inhibiting amount of a derivative, preferably an ether, ester or urethane derivative, of a TEMPO compound, e.g., 4-hydroxy-tetrahydrocarbylpiperidin-1-oxyl. The scorch inhibitors of this invention perform as well, if not better, than their 4-hydroxy-tetrahydrocarbylpiperidin-1-oxyl counterparts in similar polymer compositions and under similar conditions in terms of scorch inhibition and ultimate degree of crosslinking, but exhibit less volatility and less migration within the polymer composition. | 03-12-2009 |
20100016515 | CROSSLINKABLE POLYETHYLENE COMPOSITION, METHOD OF MAKING THE SAME, AND ARTICLES MADE THEREFROM - The instant invention is a crosslinkable polyethylene composition, a method of making the same, and articles made therefrom. The crosslinkable polyethylene composition according to instant invention includes a polyethylene component, a crosslinking agent, and a crosslinking coagent. The crosslinking agent is an organic peroxide, and the crosslinking coagent is an alkadiene, alkatriene, or alkatetraene compound comprising at least two terminal carbon-carbon double bonds. The crosslinkable polyethylene composition may, optionally, further include a scorch inhibitor, a cure booster, a stable free radical, one or more conventional additives, blends thereof, and/or combinations thereof. The method for producing a crosslinkable polyethylene composition according to instant invention includes the steps of: (1) providing a polyethylene component; (2) providing a crosslinking agent, wherein the crosslinking agent is an organic peroxide; (3) providing a crosslinking coagent, wherein the crosslinking coagent is an alkadiene, alkatriene, or alkatetraene compound comprising at least two terminal carbon-carbon double bonds; (4) melt blending the a polyethylene component, the crosslinking agent, and the crosslinking coagent at a temperature in the range of less than the decomposition temperature of the crosslinking agent; and (5) thereby forming the crosslinkable polyethylene composition. The article according to instant invention includes the crosslinked product of a polyethylene component; a crosslinking agent, wherein the crosslinking agent is an organic peroxide; and a crosslinking coagent, wherein the crosslinking coagent is an alkadiene, alkatriene, or alkatetraene compound comprising at least two terminal carbon-carbon double bonds. | 01-21-2010 |
20100120955 | Isocyanate, Diisocyanate and (Meth) Acrylate Compounds for Minimizing Scorch and Diisocyanate Compounds for Promoting Cure in Crosslinkable Compositions - Thermally activated, free-radical initiator-containing polymer compositions comprise a (i) free radical initiator, (ii) free radical crosslinkable polymer, (iii) scorch inhibiting amount and/or a cure-boosting amount of at least one of isocyanate, diiso-cyanate, e.g., MDI, or hydroxyalkyl(meth)acrylate compound, e.g., hydroxyethyl(meth)acrylate, and, optionally, (iv) other scorch retardants and/or cure boosters, e.g., a TEMPO compound, a hindered phenol, alpha-methyl styrene dimer, etc. The free radical initiator can be any thermally activated compound that is relatively unstable and easily breaks into at least two radicals, e.g., a peroxide or azo initiator. The crosslinkable polymer is a thermoplastic and/or elastomeric polymer that can be crosslinked (cured) through the action of a crosslinking agent, e.g., LDPE. The isocyanate, diisocyanate and (meth)acrylate scorch inhibitors and/or cure boosters can be used alone, or in combination with one another, or, optionally, in combination with a TEMPO compound, e.g., 4-hydroxy-TEMPO. | 05-13-2010 |
20100160471 | Catalyst System for Moisture Cure of Ethylene-Vinylsilane Copolymers - Ethylene-vinylsilane copolymers are moisture-cured under ambient conditions using a synergistic combination of at least one Lewis acid and at least one Brønsted acid or at least one Lewis base and at least one Brønsted base. Preferably the catalyst system comprises a Lewis acid, e.g., dibutyltin dilaurate, in combination with a Brønsted acid, e.g., sulfonic acid. The Lewis acid or base and the Brønsted acid or base is present in the catalyst system at a molar ratio of Lewis acid/base to Brønsted acid/base of 1:10 to 10:1. | 06-24-2010 |
20100203276 | In-Situ Methods of Generating Water Through the Dehydration of Metal Salt Hydrates for Moisture Crosslinking of Polyolefins - Compositions comprising a polymer resin comprising at least one copolymer with hydrolysable groups, a water-generating metal salt hydrate, and a catalyst that comprises a metal atom and at least two ligands taken from the set alkyjoxy and carboxylate are used to form articles that moisture-cure through in-situ generation of water via dehydration of the metal hydrate. The compositions are melt mixed to promote the dehydration and start the cure process during the mixing step. The curing compositions are formed and allowed to harden. | 08-12-2010 |
20100209056 | Styrenic Polymers as Blend Components to Control Adhesion Between Olefinic Substrates - The insulation shield layer of a power cable comprises a blend of ethylene copolymer, e.g., vinyl acetate, and a styrenic polymer, e.g., polystyrene. The insulation shield layer is adjacent to a polyolefin insulation layer of the power cable. The insulation shield layer exhibits cross-linkability, strippability from the insulation layer, and good thermal stability. | 08-19-2010 |
20100297374 | In Situ Moisture Generation and Use of Polyfunctional Alcohols for Crosslinking of Silane-Functionalized Resins - Polymer compositions comprise a (i) silane-functionalized polymer, e.g., a polyethylene grafted with vinyl triethoxy silane, (H) polyfunctional alcohol e.g., α,α,α′,α′˜tetramethyl-I,3-benzenediethanol and, optionally, (iii) acid, e.g., an alkylated aryl disulfonic acid. The use of polyfunctional alcohols in the absence of a strong acid yields a light-crosslinking of the silane-functionalized polymer and this, in turn, provides a polymer melt with improved extensional properties such as elongational viscosity and melt strength. The use of a polyfunctional alcohol in combination with a blocked strong acid provides a slow rate of crosslinking during melt processing and a high degree of ultimate crosslinking after the polymer composition has been shaped or molded. | 11-25-2010 |
20110009513 | Imide-Coupled Propylene-Based Polymer and Process - Disclosed are propylene-based polymers with improved melt strength, improved strain hardening characteristics and processes for producing the same. The processes include reacting a polyamine with a maleic anhydride-grafted-propylene-based polymer. The processes produce a rheology-modified propylene-based polymer with long chain branching by forming a polyimide linkage which couples polymer chains of the propylene-based polymer. The polyimide-coupled propylene-based polymer exhibits improved melt strength and improved strain hardening characteristics. | 01-13-2011 |
20110009514 | Silane-Coupled Propylene-Based Polymer and Method - The present disclosure provides propylene-based polymers which exhibit a strain hardening distribution factor that is less than zero and/or a strain hardening factor greater than 1.5. The propylene-based polymers are rheology-modified by way of silane coupling to improve melt strength. | 01-13-2011 |
20110015335 | In-Situ Method of Generating Through Ring-Closing Dehydration Reactions of Organic Compounds Water for Moisture Crosslinking of Polyolefins - Compositions comprising a polymer resin comprising at least one copolymer with hydrolysable groups, an amino acid or dicarboxylic acid water-generating organic compound, and a catalyst that comprises a metal atom and at least two ligands taken from the set alkyloxy and earhcxylate are used to form articles that moisture-cure through in-situ generation of water via ring-closing dehydration reactions. | 01-20-2011 |
20110021711 | CROSSLINKED POLYMER PARTICLES - The present invention is crosslinked polymer particles, prepared from a free-radical activated reaction of an unsaturated coagent and low molecular weight hydrocarbons or certain polymers. This invention allows particles to be made from mixtures of coagents and saturated compounds. The invention is also a process for preparing crosslinked polymer particles. | 01-27-2011 |
20110076502 | PURIFIED ACETYLATED DERIVATIVES OF CASTOR OIL AND COMPOSTIONS INCLUDING SAME - The present disclosure is directed to a single phase acetylated castor component (SP-ACC). An acetylated castor component is purified to produce the SP-ACC which contains a reduced amount of, or no, insoluble component(s) therein. The SP-ACC enhances the performance and properties of plasticizers of which it is a component. | 03-31-2011 |
20110152467 | Method of Crosslinking Carboxyl-Containing Polymers Using Oligoamines - Oligoamines, such as a compound of the formula H | 06-23-2011 |
20110272174 | Flexible PVC Compositions Made with Plasticizers Derived from Renewable Sources - PVC resin-based compositions that include biochemical plasticizers as the primary plasticizers are provided. The compositions include PVC resin, a compatibilizer, one or more biochemical plasticizers and, optionally, a thermoplastic elastomer impact modifier. The biochemical plasticizers are present in substantial quantities in the compositions and, in some embodiments, are the only plasticizers present in the compositions. | 11-10-2011 |
20120181056 | Acetylated Polyglycerine Fatty Acid Ester and a PVC Insulator Plasticised Therewith - The present disclosure is directed to acetylated polyglyceride fatty acid ester and compositions containing the same. The acetylated polyglyceride fatty acid ester may be blended with an epoxidized fatty acid ester. The present acetylated polyglyceride fatty acid ester and blends find advantageous application as a plasticizer. | 07-19-2012 |
20120181057 | Acetylate Glycerin Esters and Their Blends with Epoxidized Fatty Acid Esters - The present disclosure is direct to acetylated glycerin ester and compositions including the same. The acetylated glycerin ester may be blended with other plasticizers, including an epoxidized fatty acid ester. The present acetylated glycerin ester and blends find advantageous application as a plasticizer. | 07-19-2012 |
20120181058 | Heat Stabilized Polymeric Composition with Epoxidized Fatty Acid Ester Plasticizer - The present disclosure is directed to a polymeric composition containing a vinyl chloride resin and an epoxidized fatty acid ester. The polymeric composition also includes a heat stabilizing composition. The heat stabilizing composition includes a first metal salt, a second metal salt, and a β-diketone. The epoxidized fatty acid ester is the primary, or the sole, plasticizer in the polymeric composition. The present polymeric composition finds advantageous application as a coating for wire and cable. | 07-19-2012 |
20120181061 | Acetylated Derivatives of Castor Oil and Their Blends with Epoxidized Fatty Acid Esters - The present disclosure is directed to acetylated castor components and compositions including the same. The acetylated castor component may be an acetylated castor oil and/or an acetylated castor wax. The acetylated castor component may be blended with an epoxidized fatty acid ester. The present acetylated castor components and blends find advantageous application as a plasticizer. | 07-19-2012 |
20120276398 | Acetylated Monoglyceride of 12-Hydroxystearic Acid and Blends with Epoxidized Fatty Acid Esters - The present disclosure is directed to plasticizer compositions. A composition is provided which includes a castor-free acetylated glyceride of 12-hydroxystearic acid (AGHA) having a hydroxyl number from 0 to less than 15. The castor-free AGHA finds application in coatings for wire and cable. | 11-01-2012 |
20130177282 | Flexible Strength Members for Wire Cables - This invention relates to a fiber reinforced plastic material with improved flexibility and high tensile strength for use in optic cables. The strength member composition comprises a polypropylene based thermoplastic resin, a continuous fiber having a modulus greater than 80 PGa, and talc. | 07-11-2013 |
20130206450 | PLASTICIZER SYSTEM WITH IMPROVED ELECTRICAL PROPERTIES - The disclosure is directed to a plasticizer system with improved electrical properties. The plasticizer system includes (a) a primary plasticizer consisting of an epoxidized vegetable oil and (b) a secondary plasticizer consisting of an epoxidized fatty acid ester, where the primary plasticizer is present in an amount greater than 50% by weight of the total plasticizer system weight. | 08-15-2013 |
20130334738 | In-Situ Methods of Generating Water Through the Dehydration of Metal Salt Hydrates for Moisture Crosslinking of Polyolefins - Compositions comprising a polymer resin comprising at least one copolymer with hydrolysable groups, a water-generating metal salt hydrate, and a catalyst that comprises a metal atom and at least two ligands taken from the set alkyloxy and carboxylate are used to form articles that moisture-cure through in-situ generation of water via dehydration of the metal hydrate. The compositions are melt mixed to promote the dehydration and start the cure process during the mixing step. The curing compositions are formed and allowed to harden. | 12-19-2013 |
20140000933 | Purified Acetylated Derivatives of Castor Oil and Compositions Including Same | 01-02-2014 |
20140323622 | Acetylated Derivatives of Castor Oil and Their Blends with Epoxidized Fatty Acid Esters - The present disclosure is directed to acetylated castor components and compositions including the same. The acetylated castor component may be an acetylated castor oil and/or an acetylated castor wax. The acetylated castor component may be blended with an epoxidized fatty acid ester. The present acetylated castor components and blends find advantageous application as a plasticizer. | 10-30-2014 |
20140343201 | Plasticizer for Low Temperature Unwind with Weight Retention During Heat Aging - The present disclosure is directed to a plasticizer, polymeric compositions containing the plasticizer, and conductors coated with the polymeric composition. The plasticizer includes (i) an epoxidized fatty acid methyl ester, (ii) an epoxidized natural oil, and (iii) an epoxidized tallate ester. Polymeric compositions containing a polymeric resin and the plasticizer exhibit a weight loss less than 50 mg/cm | 11-20-2014 |