261 |
Waterborne shape memory polymer coatings |
US13645593 |
2012-10-05 |
US09982163B2 |
2018-05-29 |
Patrick Mather; Kazuki Ishida; Pamela Wilson |
The present invention relates to shape memory polymers and waterborne coating materials and, more particularly, to waterborne shape memory polymer coatings. |
262 |
MEMORY FOAM BASED ON THERMOPLASTIC POLYURETHANE |
US15561747 |
2016-03-23 |
US20180086871A1 |
2018-03-29 |
Stefan BOKERN; Frank PRISSOK; Sebastian HARTWIG; Elmar POESELT; Julia GOESCHEL; Uwe KEPPELER |
The present invention relates to a process for producing a molding (FK), comprising the production of a thermoplastic polyurethane, comprising the reaction of at least one polyisocyanate composition, at least one chain extender, and at least one polyol composition, the production of a molding (FK*) from the thermoplastic polyurethane, the heating of the molding (FK*) to a temperature below the temperature at which the molding (FK*) is permanently deformable, and above the switching temperature of the thermoplastic polyurethane, the compressing of the heated molding (FK*) to give a molding (FK), and the cooling of the molding (FK) to a temperature below the switching temperature of the thermoplastic polyurethane, and also to the moldings obtainable or obtained by such a process. |
263 |
Ultra low density biodegradable shape memory polymer foams with tunable physical properties |
US15269516 |
2016-09-19 |
US09840577B2 |
2017-12-12 |
Pooja Singhal; Thomas S. Wilson; Elizabeth Cosgriff-Hernandez; Duncan J. Maitland |
Compositions and/or structures of degradable shape memory polymers (SMPs) ranging in form from neat/unfoamed to ultra low density materials of down to 0.005 g/cc density. These materials show controllable degradation rate, actuation temperature and breadth of transitions along with high modulus and excellent shape memory behavior. A method of m ly low density foams (up to 0.005 g/cc) via use of combined chemical and physical aking extreme blowing agents, where the physical blowing agents may be a single compound or mixtures of two or more compounds, and other related methods, including of using multiple co-blowing agents of successively higher boiling points in order to achieve a large range of densities for a fixed net chemical composition. Methods of optimization of the physical properties of the foams such as porosity, cell size and distribution, cell openness etc. of these materials, to further expand their uses and improve their performance. |
264 |
Functionally Graded Shape Memory Polymer |
US15446487 |
2017-03-01 |
US20170297258A1 |
2017-10-19 |
Patrick Mather; Pine Yang; Xiaofan Luo; Andrew M. DiOrio |
A functionally graded shape memory polymer (SMP) that has a range of transition temperatures that are spatially distributed in a gradient fashion within one single article. The SMP is formed by post-curing a pre-cured glassy SMP in a linear temperature gradient that imposes different vitrification temperature limits at different positions along the gradient. Utilizing indentation-based surface shape memory coupled with optical measurements of photoelastic response, the capability of this material to respond over a wide range of thermal triggers is correlated with the graded glass transition behavior. This new class of SMP offers great potential for such applications as passive temperature sensing and precise control of shape evolution during a thermally triggered shape recovery. |
265 |
Plural element composite materials, methods for making and using the same |
US13678463 |
2012-11-15 |
US09791722B2 |
2017-10-17 |
Hans O. Ribi |
The invention provides composite materials comprising a shape change element and an optical change element, which elements undergo a change in response to an applied stimulus. Also provided are objects that include the subject shape changing materials, as well as methods of making and using the same. |
266 |
FABRICATION AND APPLICATION OF SHAPE MEMORY POLYMER POSSESSING TRANSESTERIFICATION INDUCED PERMANENT RESHAPING PROPERTY |
US15323397 |
2016-07-21 |
US20170197356A1 |
2017-07-13 |
TAO XIE; JINGJUN WU; QIAN ZHAO; WEIKE ZOU |
The present invention discloses the fabrication and application of a shape memory polymer possessing transesterification-induced permanent reshaping. The ester-containing crosslinked polymer is obtained by crosslinking ester bearing polymer precursors or by reaction of monomers which yield ester bonds. The transition temperature falls between 20-150° C. The reshaping temperature is tuned by catalyst amount and should be 20° C. above the transition temperature. The breakthrough of the present invention lies in integrating shape memory effect and plastic deformation into the same polymer and triggering the respective function at different occasions. The permanent shape of as synthesized polymer could be modified arbitrarily and cumulatively. Therefore, the hierarchical structure which could not otherwise be obtained due to the limit of mold fabrication process should expand the practical application of SMPs. |
267 |
Aqueous emulsion resin for producing memory foam and method for manufacturing memory foam product |
US13684413 |
2012-11-23 |
US09701836B2 |
2017-07-11 |
Yu-Ting Chen |
An aqueous emulsion resin for producing memory foam and a method for manufacturing memory foam products are revealed. The emulsion resin mainly includes 38˜58% hydrophilic polyurethane(PU) prepolymer, 8˜22% aqueous emulsion polymer and 8˜20% polyether polyol. The PU prepolymer includes 40˜70% polyether polyol and 30˜60% isocyanate while the molecular weight of polyether polyol is ranging from 60 to 1800. The polyether polyol contains at least 40 mol % amount of ether group and the amount of ether group is 18˜99.9%. The hydrophilic emulsion resin features on good vibration absorption, even pressure relief, moisture absorption, heat absorption, and low temperature resistance. While in contact with bodies, users feel cool and dry. Moreover, the resin will not become rigid at the temperature lower than 10° C. The comfort of the foam is improved and the applications of the foam are increased. |
268 |
SHAPE MEMORY POLYMERS AND METHODS OF MAKING AND USE THEREOF |
US15423937 |
2017-02-03 |
US20170145157A1 |
2017-05-25 |
Mitchell Anthamatten; Yuan Meng |
Described are shape memory polymers and methods of making shape memory polymers and actuators from the shape memory polymers. |
269 |
AMPHOTERIC SHAPE-MEMORY POLYURETHANE AND METHOD FOR PREPARING THE SAME |
US15387589 |
2016-12-21 |
US20170096520A1 |
2017-04-06 |
Shaojun CHEN; Yan YANG; Funian MO; Huanhuan REN; Zaochuan GE |
A method for preparing an amphoteric shape-memory polyurethane and an amphoteric shape-memory polyurethane prepared by the method, the method including:1) polymerizing monomer A and monomer B to synthesize a polyurethane; and 2) contacting monomer D and the polyurethane to conduct a ring-opening reaction on a nitrogen group of the polyurethane, to yield an amphoteric shape-memory polyurethane. The monomer A is a N-alkyl dialkanolamine having a formula I. The monomer B is a polyisocyanate, and the monomer D is an alkyl sulfonate. |
270 |
Polyester Polyols and Methods of Making and Using the Same |
US15190914 |
2016-06-23 |
US20170066921A1 |
2017-03-09 |
Allyson Beuhler; Debra Tindall; Kamlesh Mody; Donald A. Meltzer |
Polyester polyols are generally disclosed, including methods of making and using them. In some embodiments, the polyester polyols are incorporated into a block copolymer, such as a polyurethane block copolymer. In some embodiments, the polyurethane block copolymers can be used as compatibilizing agents, which can be used, for example, in polymer blends, polymer alloys, solutions, emulsions, as well as in extruded and injection molded articles. In some embodiments, at least a portion of the polyurethane block copolymer is derived from a renewable source. |
271 |
Water-triggered shape memory of PCL-PEG multiblock TPUs |
US14079171 |
2013-11-13 |
US09422393B2 |
2016-08-23 |
Patrick T. Mather; Gu Xinzhu |
Water-triggered shape memory polymers based on poly(ε-caprolactone) (PCL) and poly(ethylene glycol) (PEG) multiblock hybrid thermoplastic polyurethanes. Urethane linkages were formed through the addition reaction between isocyanate groups of the lysine methyl-ester diisocyanate (LDI) and the hydroxyl groups of either (PEG) or PCL diol. |
272 |
SHAPE MEMORY POLYMERS AND METHODS OF MAKING AND USE THEREOF |
US14926624 |
2015-10-29 |
US20160137778A1 |
2016-05-19 |
Mitchell Anthamatten; Yuan Meng |
Described are shape memory polymers and methods of making shape memory polymers and actuators from the shape memory polymers. |
273 |
BIODEGRADABLE AND BIOCOMPATIBLE SHAPE MEMORY POLYMERS |
US14748144 |
2015-06-23 |
US20150368406A1 |
2015-12-24 |
Xian Jun Loh; Jun Li |
This invention relates to shape memory block copolymers comprising: at least one switching segment having a Ttrans from 10 to 70° C.; and at least one soft segment, wherein at least one of the switching segments in linked to at least one of the soft segments by at least one linkage, and wherein the copolymer transforms from a first shape to a second shape by application of a first stimulus and the copolymer transforms back to the first shape from the second shape by application of a second stimulus. The shape memory block copolymers may be biocompatible and biodegradable. |
274 |
Shape-memory material based on a structural adhesive |
US14206397 |
2014-03-12 |
US09133376B2 |
2015-09-15 |
Rui Xu-Rabl; Matthias Gössi; Jürgen Finter |
A composition including at least one curable structural adhesive, and at least one chemically crosslinked elastomer on the bases of a silane-functional polymer, wherein the elastomer is in the form of an interpenetrating polymer network in the structural adhesive. The composition can be used to form a shape-memory material and is suitable for reinforcing cavities in structural components such as, for example, in automobile bodies. |
275 |
Biodegradable and biocompatible shape memory polymers |
US13635797 |
2011-03-18 |
US09089628B2 |
2015-07-28 |
Xian Jun Loh; Jun Li |
This invention relates to shape memory block copolymers comprising: at least one switching segment having a Ttrans from 10 to 70° C.; and at least one soft segment, wherein at least one of the switching segments is linked to at least one of the soft segments by at least one linkage, and wherein the copolymer transforms from a first shape to a second shape by application of a first stimulus and the copolymer transforms back to the first shape from the second shape by application of a second stimulus. The shape memory block copolymers may be biocompatible and biodegradable. |
276 |
Polymers for implantable devices exhibiting shape-memory effects |
US13903773 |
2013-05-28 |
US09066992B2 |
2015-06-30 |
John J. Stankus; O. Mikael Trollsas; Michael H. Ngo |
The present invention is directed to polymeric compositions comprising a biodegradable copolymer that possesses shape-memory properties and implantable devices (e.g., drug-delivery stents) formed of materials (e.g., a coating) containing such compositions. The polymeric compositions can also contain at least one non-fouling moiety, at least additional biocompatible polymer, at least one biobeneficial material, at least one bioactive agent, or a combination thereof. The polymeric compositions are formulated to possess good mechanical, physical and biological properties. Moreover, implantable devices formed of materials comprising such compositions can be delivered to the treatment site in a conveniently compressed size and then can expand to dimensions appropriate for their medical functions. |
277 |
Shape memory polymers |
US12905949 |
2010-10-15 |
US09051411B2 |
2015-06-09 |
Thomas S. Wilson; Jane P. Bearinger |
New shape memory polymer compositions, methods for synthesizing new shape memory polymers, and apparatus comprising an actuator and a shape memory polymer wherein the shape memory polymer comprises at least a portion of the actuator. A shape memory polymer comprising a polymer composition which physically forms a network structure wherein the polymer composition has shape-memory behavior and can be formed into a permanent primary shape, re-formed into a stable secondary shape, and controllably actuated to recover the permanent primary shape. Polymers have optimal aliphatic network structures due to minimization of dangling chains by using monomers that are symmetrical and that have matching amine and hydroxyl groups providing polymers and polymer foams with clarity, tight (narrow temperature range) single transitions, and high shape recovery and recovery force that are especially useful for implanting in the human body. |
278 |
Polyester Polyols and Methods of Making and Using the Same |
US14508643 |
2014-10-07 |
US20150112029A1 |
2015-04-23 |
Allyson Beuhler; Debra Tindall; Kamlesh Mody |
Polyester polyols are generally disclosed, including methods of making and using them. In some embodiments, the polyester polyols are incorporated into a block copolymer, such as a polyurethane block copolymer. In some embodiments, the polyurethane block copolymers can be used as compatibilizing agents, which can be used, for example, in polymer blends, polymer alloys, solutions, emulsions, as well as in extruded and injection molded articles. In some embodiments, at least a portion of the polyurethane block copolymer is derived from a renewable source. |
279 |
Polymer Network with Triple Shape Effect and Associated Programming Method |
US14529905 |
2014-10-31 |
US20150053344A1 |
2015-02-26 |
Marc BEHL; Andreas Lendlein; Yakai Feng; Jorg Zotzmann |
The invention relates to a polymer network with triple-shape-memory effect and an associated programming method. The invention also relates to a method for producing layer systems made of shape-memory materials comprising the polymer network. The polymer network includes A) a first crystalline switching segment made of a star polymer; and B) a second crystalline switching segment made of a linear polymer or a star polymer. |
280 |
SHAPE-MEMORY MATERIAL BASED ON A STRUCTURAL ADHESIVE |
US14206397 |
2014-03-12 |
US20150017435A1 |
2015-01-15 |
Rui XU-RABL; Matthias Gössi; Jürgen Finter |
A composition including at least one curable structural adhesive, and at least one chemically crosslinked elastomer on the bases of a silane-functional polymer, wherein the elastomer is in the form of an interpenetrating polymer network in the structural adhesive. The composition can be used to form a shape-memory material and is suitable for reinforcing cavities in structural components such as, for example, in automobile bodies. |