Abstract: Provided are methods of producing polyamides from beta-lactones. The polyamides include bio-based polyamides that may be obtained, either in part or completely, from renewable sources.
Type:
Grant
Filed:
March 13, 2018
Date of Patent:
August 8, 2023
Assignee:
Novomer, Inc.
Inventors:
Han Lee, Sadesh H. Sookraj, Alexander Tseitlin
Abstract: Aspects of the present disclosure relate to Schiff base oligomers and uses thereof. In at least one aspect, an oligomer is represented by Formula (I) wherein each instance of R4, R5, R6, R7, R8, R10, R11, R12, R13, and R14 is independently selected from the group consisting of hydrogen, alkyl, cycloalkyl, alkoxyl, aryloxyl, ether, and heterocyclyl. Each instance of R9 of Formula (I) is independently selected from the group consisting of alkyl, cycloalkyl, aryl, heterocyclyl, and ether. Each instance of R28 and R29 of Formula (I) is independently selected from the group consisting of hydrogen, alkyl, and aryl. Each instance of R33 of Formula (I) is independently selected from the group consisting of alkyl, cycloalkyl, aryl, heterocyclyl, and a bond. Each instance of R41 of Formula (I) is independently —NH— or a bond and each instance of R40 is independently —NH— or —NH—NH—.
Type:
Grant
Filed:
March 3, 2021
Date of Patent:
August 1, 2023
Assignee:
THE BOEING COMPANY
Inventors:
Andrew Michael Zweig, Waynie M. Schuette
Abstract: The present disclosure provides heat-curable coating compositions for optical articles. The coating compositions include a multifunctional epoxy monomer in combination with a UV absorber. The inclusion of at least one multifunctional epoxy monomer and at least one UV absorber provide epoxy coatings that exhibit excellent adhesion on a variety of lens substrates.
Abstract: The invention relates to an encapsulation composition for the storage or the confinement of waste which is toxic to health and/or the environment, comprising a resin composition containing at least one epoxy resin, and a hardening composition containing at least one polyamidoamine and at least one aromatic polyamine, said encapsulation composition having an aromaticity rate which is equal to, or higher than, 35%. The invention also relates to the use of said composition for encapsulating said waste.
Abstract: A method includes using at least one salt (S) selected from the salts of nitric acid, salts of nitrous acid, salts of halogens or salts of trifluoromethanesulfonic acid as an accelerator in a multi-component epoxy resin compound for the chemical fastening of construction elements and/or anchoring means. Another method includes the chemical fastening of construction elements and anchoring elements, such as anchor rods, anchor bolts, rods, sleeves, reinforcing bars, screws and the like in boreholes in various substrates.
Type:
Grant
Filed:
September 9, 2019
Date of Patent:
June 13, 2023
Assignee:
Hilti Aktiengesellschaft
Inventors:
Nicole Behrens, Alexander Bornschlegl, Armin Pfeil
Abstract: The present invention relates to novel thermoplastic polyurethane compositions made from the reaction product of an isocyanate component comprising hexamethylene-1,6-diisocyanate, a polyol component, and a chain extender component comprising an alkylene substituted spirocyclic compound. The present invention provides for thermoplastic polyurethane compositions which is resistant to chemical degradation and stains.
Type:
Grant
Filed:
November 13, 2018
Date of Patent:
June 13, 2023
Assignee:
Lubrizol Advanced Materials, Inc.
Inventors:
Jacob Gil Valldeperas, Romina Marin Bernabe, Umit G. Makal
Abstract: A thermal plastic polyurethane with a stress more than 2.5 MPa, its preparing formulation and making process are disclosed. In particular, the thermal plastic polyurethane with a stress more than 2.5 MPa is prepared from a formulation comprises a polycarbonate derivative and a chain extender.
Type:
Grant
Filed:
June 29, 2022
Date of Patent:
June 13, 2023
Assignee:
CHANDA CHEMICAL CORP.
Inventors:
Chien-Hsin Wu, Ying-Chi Huang, Sheng-hong A. Dai, Ru-Jong Jeng
Abstract: A curable composition of the present invention includes a cationic polymerizable compound; a thermal polymerization initiator; and a storage stabilizer, in which the cationic polymerizable compound includes at least two selected from the group consisting of a glycidyl ether compound, an alicyclic epoxy compound, and an oxetane compound, a content of the thermal polymerization initiator is from 0.3 to 3 parts by mass with respect to 100 parts by mass of the cationic polymerizable compound, and chain curing is enabled by thermal energy generated by a polymerization reaction of the cationic polymerizable compound.
Abstract: One-component (1K) adhesive compositions (“PEEP” compositions) and a process for making them are disclosed. A polyepoxide is reacted with a polyether polyol composition, a polyester polyol composition, or both in the presence of a heat-activated Lewis acid catalyst at a temperature within the range of 100° C. to 220° C. for a time effective to cure the adhesive. The compositions are storage-stable under ambient conditions. Compared with conventional epoxy compositions, the 1K PEEP compositions offer improved room temperature lap shear strength, better resilience, and higher elongation. The 1K PEEP systems deliver a desirable balance of physical and mechanical properties while avoiding polyisocyanates and polyamine crosslinkers.
Type:
Grant
Filed:
June 15, 2021
Date of Patent:
June 6, 2023
Assignee:
STEPAN COMPANY
Inventors:
Michael E. O'Brien, Warren A. Kaplan, Jennifer S. Westfall
Abstract: An adhesive formulation having an adduct of an epoxy resin and an elastomer, a phenoxy epoxy hybrid resin supplied as a solution formed by dissolving a phenoxy resin in a liquid epoxy resin to form a pre-formed dissolution product, a core/shell polymer, and one or more additional epoxy resins. The adhesive formulation may include a curing agent, blowing agent, filler, accelerator, or a combination.
Abstract: An epoxy resin includes a reaction product between an epoxy compound and a compound having a naphthalene structure and a functional group that is reactive with an epoxy group.
Abstract: The invention is directed to biomedical polyurethanes. The invention is particularly directed to biomedical polyurethanes with improved biodegradability and to an improved preparation of the biomedical polyurethanes. In particular the present invention provides a biomedical polyurethane having the formula (A-B-C-B)n, wherein A denotes a polyol, B denotes a diisocyanate moiety, C denotes a diol component and n denotes the number of recurring units, and wherein the B-C-B segment is bioresorbable.
Type:
Grant
Filed:
March 31, 2017
Date of Patent:
April 25, 2023
Assignee:
Polyganics IP B.V.
Inventors:
Martin Franke Tooren, Dirk Erik Muller, Konstantin Igorovitch Denisov
Abstract: The present invention relates novel furan based amine cross-linkers with improved thermomechanical and water barrier properties. The novelty of this invention is the use of aromatic, and hydrophobic aliphatic aldehydes to bridge two furfuryl amines, which yields a diamine or tetra amines with a significantly enhanced hydrophobic character. These diamine cross-linkers exhibit enhanced water barrier properties and thermomechanical properties when cured with both commercial and synthetic epoxies.
Type:
Grant
Filed:
August 21, 2018
Date of Patent:
April 18, 2023
Assignees:
Drexel Unversity, The Government of the United States of America, as represented by The Secretary of the Army
Inventors:
Giuseppe R. Palmese, Santosh K. Yadav, John Vergara, John J. LaScala
Abstract: An improved approach toward the formation of an adhesive comprising a separated liquid component and solid component and application of the adhesive to a substrate immediately upon mixing the liquid and solid components.
Type:
Grant
Filed:
January 29, 2018
Date of Patent:
April 18, 2023
Assignee:
Zephyros, Inc.
Inventors:
Blake Synnestvedt, Craig Knepper, David Egle, Patrick Moore, Jeanne Bednarski, David Sheasley
Abstract: A method for preventing hardener compounds to be formed from hardener precursors in an aerosol formulation suitable for use in aerosol for making a paint is disclosed.
Abstract: A thermoplastic resin composition of the present invention comprises: about 5 wt % to about 35 wt % of a modified polyaryletherketone resin comprising a repeat unit represented by chemical formula 1; about 5 wt % to about 35 wt % of a polyether ether ketone resin; about 20 wt % to about 40 wt % of a polyphenylsulfone resin; and about 15 wt % to about 50 wt % of glass fibers. The thermoplastic resin composition has good properties in terms of adhesion to metals, impact resistance, and so on.
Type:
Grant
Filed:
December 31, 2018
Date of Patent:
March 28, 2023
Assignee:
Lotte Chemical Corporation
Inventors:
Seon Hui Lee, Eric Arifin, Min Soo Lee, Bong Jae Lee, Sang Hyun Hong
Abstract: Provided is an epoxy resin composition that can achieve excellent low dielectric characteristics and high adhesive strength to metal. Specifically, provided is an epoxy resin composition comprising organic fine particles and an epoxy resin having a specific structure.
Abstract: The invention is directed to a method for attaching nanomaterials containing hexagonal lattices to polymer surfaces. For example, carbon nanotubes (CNTs) can be attached to polycarbonate, polyethylene, or epoxy surfaces by amination of the polymer surface, functionalization of the surfaces of CNTs with ester groups, and reacting the aminated surface of the polymer with the ester groups of the functionalized surfaces of the CNTs in an organic solvent to chemically bind the CNTs to the polymer surface.
Type:
Grant
Filed:
February 17, 2021
Date of Patent:
January 31, 2023
Assignee:
National Technology & Engineering Solutions of Sandia, LLC
Inventors:
Erica Marie Redline, LaRico Juan Treadwell, Andrew Vackel
Abstract: An etheramine mixture comprising one or more polyether diamines, methods for its production, and its use as a curing agent for epoxy resins. The etheramine mixture may also be used in the preparation of polyamides and polyurea compounds.
Type:
Grant
Filed:
March 18, 2019
Date of Patent:
January 31, 2023
Assignee:
HUNTSMAN Petrochemical LLC
Inventors:
Howard P. Klein, Terry L. Renken, Cheng-Kuang Li
Abstract: Disclosed herein is a bonding method for bonding two adherends using an adhesive main agent that contains a thermoplastic resin having a cross-linkable group and a catalyst. The bonding method includes the steps of forming a main agent layer on one of the adherends; applying a catalyst onto the main agent layer; laminating the main agent layer and another adherend; and heating and pressing a laminated body in a layer thickness direction. Another embodiment of the bonding method may include a step of applying a catalyst onto one of the adherends, a step of forming a main agent layer on a surface onto which the catalyst has been applied, a step of laminating the two adherends, and a step of heating and pressing a laminated body in a layer thickness direction.