181 |
自己修復材料 |
JP2007550261 |
2006-12-12 |
JPWO2007069765A1 |
2009-05-28 |
山口 政之; 政之 山口; 稔 寺野 |
高分子架橋構造に対して多数のダングリング鎖が結合した高分子架橋体であって、高分子架橋構造に対するダングリング鎖の結合量と、高分子架橋構造の架橋点間分子量とが一定の特異的領域内に調整されることにより、高分子架橋構造による材料形状の保持作用とダングリング鎖による自己修復作用とが両立する臨界近傍ゲルの特性を示す自己修復材料。この自己修復材料は簡便かつ低コストに製造でき、優れた自己修復性を持つ。この自己修復材料を利用した自己修復性構造体も提供することができる。 |
182 |
Shape memory polymers using semi-crystalline thermoplastic polyurethanes having a microstructured hard segment |
JP2008507724 |
2006-04-11 |
JP2008537010A |
2008-09-11 |
クイン ジーイー; パトリック ティー マザー; チャンデン リュ |
硬セグメントと軟セグメントが交互に並んだ配列を持つ、熱可塑性ポリウレタン類であって、SMPを構成する結晶性硬セグメントを生成するため、微細構造を持つ多面体オリゴシルセスキオキサンジオールを鎖伸長剤として使用する。 このポリウレタン類は、ポリオールと、鎖伸長剤であるジヒドロキシル末端化多面体オリゴシルセスキオキサンと、ジイソシアナートとの反応より生成する。 このポリウレタン類は、例えば、ヒトの診療に用いるインプラント類、薬物送達用マトリックス、超吸収性ヒドロゲル、コーティング、接着剤、温度および湿度センサなど、多数の用途を持つ。 |
183 |
再成形可能かつ形状回復能に優れた形状記憶性樹脂および該樹脂の架橋物からなる成形体 |
JP2005516192 |
2004-12-10 |
JPWO2005056642A1 |
2007-07-05 |
緑 志村; 井上 和彦; 和彦 井上; 位地 正年; 正年 位地 |
ガラス転移温度(Tg)が40℃以上200℃以下、熱可逆性反応の開裂温度(Td)が50℃以上300℃以下、Tg+10℃≦Tdの範囲にあり、形状記憶時、形状回復時の変形温度が、Tg以上Td未満であることを特徴とし、冷却により共有結合し、加熱により開裂する熱可逆性反応により架橋された形状記憶性樹脂を用いることで、優れた形状回復力を備え、さらにリサイクル性を有する形状記憶性成形体を提供することが可能となる。 |
184 |
Method for producing a fiber reinforced plastic |
JP2003097770 |
2003-04-01 |
JP3924258B2 |
2007-06-06 |
典生 三輪; 俊一 林; 宣也 林; 敏勝 野原 |
Provided are a shape memory polymer composition, which comprises a bifunctional isocyanate and/or a trifunctional isocyanate, and a polyol having an average molecular weight of from 100 to 550, with a molar ratio in terms of functional groups of isocyanate : polyol = 0.9 to 1.1 : 1.0; FRP having the shape memory polymer and a fibrous material; and a production process of the FRP comprising impregnating the fibrous material with, as a matrix resin, the shape memory polymer composition and curing. According to the present invention, the shape memory polymer composition has an extended pot life and FRP has excellent inflatability. |
185 |
Shape-memorizing polymer composition, fiber-reinforced plastic and its manufacturing method |
JP2003097770 |
2003-04-01 |
JP2004300368A |
2004-10-28 |
HAYASHI NORIYA; HAYASHI SHUNICHI; MIWA NORIO; NOHARA TOSHIKATSU |
PROBLEM TO BE SOLVED: To provide a shape-memorizing polymer composition having an extended pot life, a fiber-reinforced plastic exhibiting excellent inflatability, and its manufacturing method.
SOLUTION: The shape-memorizing polymer composition comprises a bifunctional, a trifunctional, or a bifunctional and trifunctional isocyanate and a polyol having an average molecular weight of 100-550 in a molar ratio of isocyanate:polyol of (0.9-1.1):1.0 in terms of the functional groups. The fiber-reinforced plastic comprises the shape-memorizing polymer composition and a fiber material. The fiber-reinforced plastic is manufactured by impregnating the shape-memorizing polymer composition as the matrix resin with the fiber material and curing the composition.
COPYRIGHT: (C)2005,JPO&NCIPI |
186 |
Prepreg for fiber reinforced plastics and process for producing the same |
JP2003095201 |
2003-03-31 |
JP2004300291A |
2004-10-28 |
HAYASHI NORIYA; HAYASHI SHUNICHI; MIWA NORIO; NOHARA TOSHIKATSU |
PROBLEM TO BE SOLVED: To provide a prepreg for FRP (fiber reinforced plastics) that has a sufficiently long pot life and can simply produce an FRP molded article and to provide a process for producing the prepreg.
SOLUTION: The prepreg for FRP comprises a matrix resin composition comprising a difunctional or trifunctional isocyanate in a liquid form, a polyol and a difunctional chain extender including an active hydrogen group in a functional group molar ratio of the isocyanate to the polyol to the chain extender=(5.0-1.0):1.0:(4.0-0) and a fibrous material or comprises a matrix resin composition comprising a difunctional or trifunctional isocyanate in a liquid form and a polyol in a functional group molar ratio of the liquid isocyanate to the polyol=(0.9-1.1):1.0 and a fibrous material.
COPYRIGHT: (C)2005,JPO&NCIPI |
187 |
Matrix resin composition for fiber-reinforced plastic and method for producing fiber-reinforced plastic |
JP2001333973 |
2001-10-31 |
JP2003137962A |
2003-05-14 |
HAYASHI NORIYA; HAYASHI SHUNICHI; MIWA NORIO; NOHARA TOSHIKATSU |
PROBLEM TO BE SOLVED: To provide a fiber-reinforced plastic (FRP) molded form incorporated with reinforcing fibers in high density and having high mechanical strength and properties such as inflatableness through developing a thermosetting resin with extended pot life. SOLUTION: The one objective matrix resin composition for fiber-reinforced plastics comprises a bifunctional or trifunctional liquid diisocyanate, a bifunctional polyol and an active hydrogen group-containing bifunctional chain extender in the functional group-based molar ratio of (5.0-1.0):1.0:(4.0-0). The other objective method for producing the fiber-reinforced plastic molded form comprises impregnating a fibrous material with the resin composition followed by curing the composition. |
188 |
Shape memory polymer foam |
JP24434088 |
1988-09-30 |
JPH0739506B2 |
1995-05-01 |
HAYASHI SHUNICHI; FUJIMURA HIROSHI |
|
189 |
Shape memory molded |
JP21094291 |
1991-08-22 |
JPH0699570B2 |
1994-12-07 |
和之 小林; 林 俊一; 隆一 渋田 |
|
190 |
Polyurethane foam |
JP112394 |
1994-01-11 |
JPH06239955A |
1994-08-30 |
GERUHARUTO YOTSUEFU BUREISU; SUTEFUAN EDOBARUTO REO HERUSEM |
PURPOSE: To obtain a shape memory polyurethane foam having a glass transition temperature of higher than the surrounding temperature by allowing a specific polyisocyanate component to react with a specific polyol composition in the presence of a foaming agent containing water.
CONSTITUTION: The objective foam is obtained by allowing a polyol composition which contains (A) a polyisocyanate component containing 70 (wt.)% or more 4,4'-diphenylmethane diisocyanate or a variant thereof and (B) a polyoxyalkylene polyol (preferably polyoxyethylene hexol) which has an oxyethylene residue and has an average nominal hydroxyl functionality of 2.2 to 6, an average oxyethylene content of 86% and an average hydroxyl equivalent weight of 250 to 1,500, to react in the presence of (C) a foaming agent containing 1.5 to 6% water, based on the weight of component B, so as to yield an isocyanate index of 90 to 150.
COPYRIGHT: (C)1994,JPO |
191 |
Formed shape-memory material |
JP21094291 |
1991-08-22 |
JPH05320366A |
1993-12-03 |
KOBAYASHI KAZUYUKI; HAYASHI SHUNICHI; SHIBUTA RYUICHI |
PURPOSE: To obtain a formed shape-memory material taking advantage of abrupt change of physical properties at the glass transition temperature or thereabout.
CONSTITUTION: The formed shape-memory material contains a urethane elastomer having a glass transition temperature set to a temperature near the working temperature and synthesized from an isocyanate compound, a polyol compound and a chain extender. The material is formed to a desired shape at a temperature above the glass transition temperature of the urethane elastomer, cooled to a temperature below the glass transition temperature while keeping the desired shape to memorize the shape and heated in use at a temperature above the glass transition temperature to restore the memorized shape.
COPYRIGHT: (C)1993,JPO&Japio |
192 |
Densifiable and re-expandable polyurethane foam and manufacture thereof |
JP16043991 |
1991-07-01 |
JPH04232730A |
1992-08-21 |
RONARUDO EMU HAARINTON; ROBAATO BII TAANAA; ROBAATO EMU HAANDEN |
PURPOSE: To density a polyurethane foam for transportation and other purposes by heating the polyurethane foam with a specific glass transition temperature at a higher temperature than Tg to density the heated foam and cooling the densified foam at a lower temperature than Tg.
CONSTITUTION: This cooled foam is kept in a densified state until it is reheated at a higher temperature than Tg and resumes its original dimensions through re-expanding the foam.
COPYRIGHT: (C)1992,JPO |
193 |
Heat insulating material consisting of shape memorizing polymer foam |
JP26416988 |
1988-10-21 |
JPH02113016A |
1990-04-25 |
HAYASHI SHUNICHI; ISHIBASHI AKIRA; IKENOUE TETSUYOSHI |
PURPOSE: To obtain an inexpensive heat insulating material, consisting of a shape memorizing polymer foam, excellent in moldability and capable of exhibiting a great change in elastic modulus before and after the glass transition point and effectively utilizing the change in the elastic modulus.
CONSTITUTION: The objective heat insulating material obtained by blending a bifunctional diisocyanate (e.g., 2,4-toluene diisocyanate) with a bifunctional polyol (e.g., polypropylene glycol) and a bifunctional chain extender (e.g., ethylene glycol) containing active hydrogen groups at (2.00-1.10):1.00:(1.00-0.10) molar ratio, polymerizing the resultant blend by a prepolymer method and foaming the resultant shape memorizing polymer, expressed by the formula (m is 1-16; n is 0-16) and having NCO and OH in nearly equal amounts at the terminals, -50 to +60°C glass transition point and 3-50wt.% crystallinity with a decomposition type foaming agent (e.g., sodium bicarbonate) or volatile type foaming agent (e.g., compressed nitrogen gas).
COPYRIGHT: (C)1990,JPO&Japio |
194 |
Shape memory tube and forming method for the same |
JP26049188 |
1988-10-18 |
JPH02107431A |
1990-04-19 |
SHIMIZU MAKOTO; HAYASHI SHUNICHI |
PURPOSE: To perform melting and molding such as injection molding, extrusion molding, etc. by deforming a tube at a temperature higher than the glass transition point of polymer molded in a tubular shape of shape memory polyurethane elastomer and lower than a molding temperature, and then cooling it to a temperature lower than the glass transition point.
CONSTITUTION: Bifunctional diisocyanate, polyol and bifunctional chain elongation agent containing active hydrogen group are employed as materials, mixed at a molar ratio by diisocyanate : polyol : chain elongation agent = 2.00 - 1.10 : 1.00 : 1.00 - 0.10, and polymerized by a prepolymer method to generate polyurethane elastomer. The shape memory polyurethane elastomer in which [NCO] and [OH] are contained substantially in equal quantity at the ends thereof, and which has glass transition points of -50 - 60°C and crystallinity of 3 - 50wt.% is employed. This is molded in a tubular shape, stored in a basic shape, deformed to the tube at a temperature higher than the glass transition point of the polymer and lower than a molding temperature, and cooled to the temperature lower than the glass transition point as it is to employ a solidified second shape.
COPYRIGHT: (C)1990,JPO&Japio |
195 |
Shape memory transparent material and molding method thereof |
JP25722988 |
1988-10-14 |
JPH02106323A |
1990-04-18 |
HAYASHI SHUNICHI; WAKITA YOSHIAKI |
PURPOSE: To impart a shape memory function capable of forming a second shape by molding a shape memory transparent polymer having a glass transition point higher than its working temperature of a transparent material.
CONSTITUTION: A shape memory transparent material having a glass transition point higher than its working temperature is heated to a temperature higher than the transition point, and deformed to be held in a desired shape by using forms and shape holding means. Then, it is cooled to a temperature lower than the transition point, the shape is solidified, and a transparent material having a second shape is removed. Thereafter, a shape memory transparent material in which, when a basic shape is required, it is heated to the tempera ture higher than the transition point to recover its memory is molded. The examples of the transparent material includes polymers such as, urethane, sty rene, butadiene, crystalline diene polymer.
COPYRIGHT: (C)1990,JPO&Japio |
196 |
Molded article of shape memorizing polyurethane elastomer |
JP24434188 |
1988-09-30 |
JPH0292914A |
1990-04-03 |
HAYASHI SHUNICHI |
PURPOSE: To obtain the title thermoplastic molded article showing rubber elasticity at ≥ glass transition temperature of about room temperature, capable of being molded by melt molding such as injection molding by polymerizing a bifunctional diisocyanate with a bifunctional polyol and a bifunctional chain extender in a specific ratio.
CONSTITUTION: (A) A bifunctional diisocyanate (e.g., 2,4-toluene diisocyanate) is copolymerized with (B) a bifunctional polyol (e.g., polypropylene glycol) and (C) a bifunctional chain extender containing active hydrogen (e.g. ethylene glycol) the molar ratio of the component A:B:C of (2-1):1:(1-0.1) by prepolymer method to give the aimed molded article containing equal amounts of [NCO] and [OH] at the ends, -50-60°C glass transition temperature and 3-50% crystallinity.
COPYRIGHT: (C)1990,JPO&Japio |
197 |
Shape memorizing polymer foam |
JP24434088 |
1988-09-30 |
JPH0292912A |
1990-04-03 |
HAYASHI SHUNICHI; FUJIMURA HIROSHI |
PURPOSE: To obtain the title foam having raised rate of shape recovery and excellent recovery action properties, taking a deformed shape prepared by compressing and deforming a foam at ≥ glass transition temperature and solidifying the foam at ≤ the transition point and a molded shape prepared by heating the deformed shape to restore the deformed shape into an initial shape.
CONSTITUTION: The aimed foam can take a deformed shape prepared by compressing and deforming foam at ≥ glass transition point of polymer and then solidifying the foam at ≥ the glass transition point of polymer and a molded shape prepared by reheating the deformed shape at ≥ the glass transition point of polymer to restore the deformed shape into an initial shape. The aimed foam is a polyurethane foam obtained by blending a bifunctional diisocyanate with a bifunctional polyol and an active hydrogen group containing bifunctional chain extender in the molar ratio of (2.00-1.10):1.00:(1.00-0.10), adding a blowing agent to the blend and synthesizing by prepolymer method. The foam contains almost equivalent [NCO] and [OH] at the end of the polymer and has -50-60°C glass transition point and 3-50wt.% crystallinity.
COPYRIGHT: (C)1990,JPO&Japio |
198 |
POLYOLS FOR IMPROVED VISCOELASTIC FOAMS WITH REDUCED TEMPERATURE SENSITIVITY |
US15918165 |
2018-03-12 |
US20180265624A1 |
2018-09-20 |
Nigel Barksby; Brian L. Neal; Susan B. McVey; John E. Hayes |
This invention relates to a process for preparing viscoelastic polyurethane foam in which the isocyanate-reactive component comprises a specific polyol blend, and to viscoelastic polyurethane foam wherein the isocyanate-reactive comprises the specific polyol blend. The polyol blend may be an in situ formed polyol blend. |
199 |
Shape memory polymers and methods of making and use thereof |
US15423937 |
2017-02-03 |
US10005883B2 |
2018-06-26 |
Mitchell Anthamatten; Yuan Meng |
Described are shape memory polymers and methods of making shape memory polymers and actuators from the shape memory polymers. |
200 |
Plural Element Composite Materials, Methods for Making and Using the Same |
US15783701 |
2017-10-13 |
US20180039101A1 |
2018-02-08 |
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. |