-
公开(公告)号：US06797783B1
公开(公告)日：2004-09-28
申请号：US08941132
申请日：1997-09-30
IPC分类号： C08F25506
CPC分类号： C08C19/06 , C08F253/00 , C08L51/04 , C08L2666/02
摘要： A modified natural rubber is disclosed, which is obtained by modifying a deproteinized natural rubber having a nitrogen content of less than 0.10% by weight. A process for improving the graft ratio and the graft efficiency of natural rubber and a process for improving the epoxidation ratio of natural rubber are also disclosed. The modified natural rubber of the present invention has a high modifying efficiency and thus shows an excellent modifying effect. It is also useful as a means for preventing allergy.
摘要翻译： 公开了通过改性氮含量低于0.10重量％的脱蛋白天然橡胶而得到的改性天然橡胶。 还公开了改善天然橡胶的接枝率和接枝效率的方法以及改善天然橡胶的环氧化比例的方法。 本发明的改性天然橡胶具有高的改性效果，因此显示出优异的改性效果。 它也可用作防止过敏的手段。
-
公开(公告)号：US5610212A
公开(公告)日：1997-03-11
申请号：US241989
申请日：1994-05-13
摘要： A means for stabilizing a deproteinized natural rubber latex is disclosed, comprising adding a stabilizer selected from the group consisting of (a) an anionic surfactant, (b) an amphoteric surfactant, (c) a nonionic surfactant, (d) a nonionic or amphoteric oligomer or polymer, and (e) an anionic oligomer or polymer. By adding the stabilizer, the mechanical stability of a deproteinized natural rubber latex can be markedly improved.
摘要翻译： 公开了一种用于稳定脱蛋白天然橡胶胶乳的方法，包括加入选自（a）阴离子表面活性剂，（b）两性表面活性剂，（c）非离子表面活性剂，（d）非离子或两性 低聚物或聚合物，和（e）阴离子低聚物或聚合物。 通过添加稳定剂，可以显着提高脱蛋白天然橡胶胶乳的机械稳定性。
-
公开(公告)号：US5585459A
公开(公告)日：1996-12-17
申请号：US241714
申请日：1994-05-12
摘要： A process for producing raw rubber from a deproteinized natural rubber is disclosed, which comprises coagulating rubber particles in the deproteinized natural rubber latex by: (1) adding a nonionic surfactant having a cloud point of from 20.degree. to 100.degree. C. and a molecular weight of 300 or more to the deproteinized natural rubber latex and heating the latex to a temperature not lower than the cloud point of the nonionic surfactant; or (2) adding a coagulation assistant selected from the group consisting of: (a) an anionic surfactant, (b) an amphoteric surfactant, (c) a nonionic surfactant, (d) a nonionic or amphoteric oligomer or polymer, and (e) an anionic oligomer or polymer, to the deproteinized natural rubber latex; and then recovering the coagulated rubber particles. According to the process of the present invention, raw rubber containing substantially no metal ion can be produced with a high efficiency.
摘要翻译： 公开了一种从脱蛋白天然橡胶生产生橡胶的方法，其包括：通过以下步骤将脱蛋白天然橡胶胶乳中的橡胶颗粒凝结：（1）加入浊点为20至100℃的非离子表面活性剂和分子 重量为300以上的脱蛋白天然橡胶胶乳，并将胶乳加热至不低于非离子表面活性剂的浊点的温度; 或（2）加入选自以下的凝血助剂：（a）阴离子表面活性剂，（b）两性表面活性剂，（c）非离子表面活性剂，（d）非离子或两性低聚物或聚合物，和 ）阴离子低聚物或聚合物; 然后回收凝固的橡胶颗粒。 根据本发明的方法，可以高效率地生产基本上不含金属离子的生橡胶。
-
4.发明授权Process for preparing deproteinized natural rubber latex molding and deproteinizing agent for natural rubber latex 失效制备脱蛋白天然橡胶胶乳成型和天然橡胶胶乳脱蛋白的方法
公开(公告)号：US5910567A
公开(公告)日：1999-06-08
申请号：US913863
申请日：1997-12-19
申请人： Yasuyuki Tanaka , Shinichi Nakade , Atsuko Ochi , Toshiaki Sakaki , Masaharu Hayashi , Kazuhiro Sekiguchi , Akihito Kuga , Eiji Kanamaru
发明人： Yasuyuki Tanaka , Shinichi Nakade , Atsuko Ochi , Toshiaki Sakaki , Masaharu Hayashi , Kazuhiro Sekiguchi , Akihito Kuga , Eiji Kanamaru
CPC分类号： C08J3/244 , C08C1/04 , C08J5/00 , C08J5/02 , C08J2307/00 , Y10S524/925 , Y10S524/926 , Y10S528/932 , Y10S528/934 , Y10S528/935
摘要： A method for producing a formed product of deproteinized natural rubber latex capable of reducing a content of an allergen in a natural rubber latex material to a level sufficient to keep the latex from being harmful to the human body without decreasing yields of the product and deteriorating formability of the latex. In the method, cleaning removal of a non-rubber content is carried out after each of protein decomposition, prevulcanization and forming. An aqueous alkali solution, ammonia, water containing free chlorine in an amount of 0.005 to 0.02% by weight or alcohol-water mixed liquid containing alcohol in an amount of 5 to 80% by weight is used as cleaning liquid for the cleaning removal. The method is suitably applied to production of a natural rubber product such as a rubber glove, a condom, a catheter, a foam rubber material and the like.
摘要翻译： PCT No.PCT / JP96 / 00640 Sec。 371 1997年12月19日第 102（e）日期1997年12月19日PCT 1996年3月14日PCT公布。 公开号WO96 / 28500 PCT 日本1996年9月19日一种生产能够将天然橡胶胶乳材料中的变应原含量降低至足以使乳胶不会对人体有害的水平的脱蛋白天然橡胶胶乳的成形物的制造方法， 产品和乳胶的成型性变差。 在该方法中，在蛋白质分解，预硫化和成型中进行非橡胶含量的清洗除去。 使用碱性水溶液，氨，含有0.005〜0.02重量％游离氯的水，或含有5〜80重量％醇的醇 - 水混合液，作为清洗除去用清洗液。 该方法适用于橡胶手套，避孕套，导管，泡沫橡胶材料等天然橡胶制品的制造。
-
公开(公告)号：US5856600A
公开(公告)日：1999-01-05
申请号：US740786
申请日：1996-11-01
申请人： Yasuyuki Tanaka , Toshiaki Sakaki , Atsuko Kawasaki , Masaharu Hayashi , Eiji Kanamaru , Kazuhiko Shibata
发明人： Yasuyuki Tanaka , Toshiaki Sakaki , Atsuko Kawasaki , Masaharu Hayashi , Eiji Kanamaru , Kazuhiko Shibata
摘要： Described is a process for the production of depolymerized natural rubber, which makes it possible to obtain, at high reaction efficiency, of depolymerized natural rubber in the liquid form and having a narrow molecular weight distribution; and also a process for the production of depolymerized natural rubber which is free from odor or coloring peculiar to natural rubber and is also free from the danger of immediate allergy derived from protein.The process according to the present invention comprises adding a carbonyl compound to a natural rubber latex, and then subjecting the resulting natural rubber to air oxidation in the presence of a radical forming agent or adding a carbonyl compound to the latex of deproteinized natural rubber and then subjecting the deproteinized natural rubber to air oxidation optionally in the presence of a radical forming agent.
摘要翻译： 描述了一种生产解聚天然橡胶的方法，其可以以高反应效率获得液体形式的解聚天然橡胶并具有窄的分子量分布; 还有一种天然橡胶不含气味或着色的解聚天然橡胶的生产方法，也没有来自蛋白质的立即过敏的危险。 根据本发明的方法包括向天然橡胶胶乳中加入羰基化合物，然后将所得天然橡胶在自由基形成剂存在下进行空气氧化或向脱蛋白天然橡胶的胶乳中加入羰基化合物，然后 任选地在自由基形成剂存在下使脱蛋白天然橡胶经受空气氧化。
-
公开(公告)号：US5622998A
公开(公告)日：1997-04-22
申请号：US527322
申请日：1995-09-12
申请人： Yasuyuki Tanaka , Toshiaki Sakaki , Atsuko Kawasaki , Masaharu Hayashi , Eiji Kanamaru , Kazuhiko Shibata
发明人： Yasuyuki Tanaka , Toshiaki Sakaki , Atsuko Kawasaki , Masaharu Hayashi , Eiji Kanamaru , Kazuhiko Shibata
CPC分类号： C08C19/08
摘要： A depolymerized natural rubber having a number-average molecular weight of from 2,000 to 50,000 obtained by the depolymerization of a deproteinized natural rubber. A process for the preparation of a depolymerized natural rubber comprises dissolving a deproteinized natural rubber into an organic solvent so as to give a concentration of from 1 to 30% by weight and then carrying out air oxidation of the resulting solution in the presence of a metallic catalyst. The depolymerized natural rubber can provide the same physical properties as ordinary vulcanized rubbers, exhibits no odor or color characteristic to natural rubbers and causes no immediate allergy induced by protein.
摘要翻译： 通过脱蛋白天然橡胶的解聚得到的数均分子量为2000〜50,000的解聚天然橡胶。 制备解聚天然橡胶的方法包括将脱蛋白天然橡胶溶解在有机溶剂中，使其浓度为1〜30重量％，然后在金属的存在下进行所得溶液的空气氧化 催化剂。 解聚天然橡胶可以提供与普通硫化橡胶相同的物理性能，对天然橡胶不产生气味或颜色特征，并且不会引起蛋白质引起的即时过敏。
-
公开(公告)号：US06313074B1
公开(公告)日：2001-11-06
申请号：US09462269
申请日：2000-04-03
IPC分类号： A01N2530
CPC分类号： A01N31/02 , A01N25/30 , Y10S514/975
摘要： There are provided an effect enhancer for an agricultural chemical and an a chemical formulation which is not pharmaceutically harmful to various crops and can be safely used and which has an excellent effect enhancing function to various agricultural chemicals. The effect enhancer for the agricultural chemical comprises, as an effective component, a compound represented by the following formula (I): R—O[(EO)x(PO)y](EO)z—H, wherein EO is an oxyethylene group; PO is an oxypropylene group; R is a straight-chin or branched alkyl group or alkenyl group having 6 to 30 carbon atoms; x is a value of 1 to 30 on the average; y is a value of 1 to 30 on the average, and z is a value of 1 to 30 on the average. The agricultural chemical formulation composes the above-mentioned surfactant and a technical grade of active ingredient or an active compound for an agricultural chemical.
摘要翻译： 提供了一种农药的效果增强剂和对各种作物不具有药学上有害作用并且可以安全使用且对各种农药具有优异的增效作用的化学制剂。 作为农药的效果增强剂，作为有效成分，含有由下式（I）表示的化合物：R-O [（EO）x（PO）y]（EO）z-H，其中EO为氧化乙烯基; PO是氧化丙烯基; R为碳原子数为6〜30的直链或支链烷基或烯基; x的平均值为1〜30; y平均为1〜30，平均为z为1〜30。 农业化学制剂组成上述表面活性剂和农药的活性成分或活性化合物的工业级。
-
8.发明授权
公开(公告)号：US5863909A
公开(公告)日：1999-01-26
申请号：US836719
申请日：1997-05-22
IPC分类号： A01N25/10 , A01N25/30 , A01N33/12 , A01N37/02 , A01N37/06 , A01N65/06 , A01P3/00 , A01N43/78 , A01N57/14 , B01J13/00
CPC分类号： A01N25/30 , Y10S514/941 , Y10S514/952 , Y10S514/975
摘要： An adjuvant composition for agricultural chemicals comprising at least one sorbitan/fatty acid ester surfactant (A) and at least one surfactant (B) selected from the group consisting of resin acid surfactants and anionic oligomer or polymer type quaternary ammonium salt surfactants can be used for various crops in safety without causing injury thereof to the crops, and can enhance the efficacies of various agricultural chemicals.
摘要翻译： PCT No.PCT / JP95 / 02382 Sec。 371日期：1997年5月22日 102（e）日期1997年5月22日PCT提交1995年11月22日PCT公布。 公开号WO96 / 16539 日期1996年6月6日，包含至少一种脱水山梨醇/脂肪酸酯表面活性剂（A）和至少一种选自树脂酸性表面活性剂和阴离子低聚物或聚合物型季铵盐的表面活性剂（B）的农药用辅料组合物 表面活性剂可以安全地用于各种作物，而不会对作物造成伤害，并且可以提高各种农药的有效性。
-
9.发明授权Antifoaming agent for fermentation, L-amino acid-producing medium and production process of L-amino acids 失效消泡剂用于发酵，L-氨基酸生产介质和L-氨基酸的生产过程
公开(公告)号：US5567606A
公开(公告)日：1996-10-22
申请号：US395656
申请日：1995-02-28
CPC分类号： B01D19/0404 , C07C67/26 , C12N1/38 , C12P13/04 , Y10S435/812 , Y10S516/01 , Y10S516/904
摘要： Disclosed herein are antifoaming agents for fermentation which include, as active ingredient at least one of (a) a reaction product obtained by adding at least one alkylene oxide to a mixture of a fat and/or oil with a trihydric or still higher polyhydric alcohol, or (b) a compound represented by the following general formula (1): ##STR1## wherein n stands for a number of 2-50, R.sup.1, R.sup.2 and R.sup.3 mean individually a hydrogen atom or an acyl group having 2-31 carbon atoms, x denotes an alkylene group having 2-4 carbon atoms, and m1, m2 and m3 are individually a number of 0-200, an L-amino acid-producing medium containing either one of these components, and a production process for L-amino acids making use of this medium. The use of this antifoaming agent permits the quick, sure and durable suppression of bubbling during incubation, and the overall production of the L-amino acid is significantly improved.
摘要翻译： 本发明公开了用于发酵的消泡剂，其包括作为活性成分的至少一种（a）通过向脂肪和/或油的混合物中加入至少一种烯化氧与三元或更高级多元醇而获得的反应产物， 或（b）由以下通式（1）表示的化合物：其中n表示2-50的数，R1，R2和R3分别表示氢原子或具有2- 31个碳原子，x表示具有2-4个碳原子的亚烷基，m1，m2和m3分别为0-200的数量，含有这些组分之一的L-氨基酸生产介质和制备方法 对于使用该介质的L-氨基酸。 这种消泡剂的使用允许在孵育期间快速，确定和持久地抑制起泡，并且L-氨基酸的总体生产显着改善。
-
10.发明授权Low allergenic natural rubber and method of preparing low allergenic natural rubber latex 有权低过敏天然橡胶及其制备低过敏天然橡胶胶乳的方法公开(公告)号：US06784281B2
公开(公告)日：2004-08-31
申请号：US09986374
申请日：2001-11-08
IPC分类号： C08L104
CPC分类号： C08C1/04 , Y10S528/932 , Y10S528/934 , Y10S528/935
摘要： A method of preparing a low allergic natural rubber latex which is less likely to cause allergy, comprising adding a protease having an exopeptidase activity to a natural rubber latex and aging the natural rubber latex, thereby to decompose a protein in the latex to such a degree that the protein and a protein decomposition product, which have a number-average molecular weight of 4500 or more, are not detected; a method of preparing a deproteinized natural rubber latex which is less likely to cause allergy, comprising adding an alkali protease to a natural rubber latex, thereby to decompose a protein in the latex, adding a protease having an exopeptidase activity, thereby to further decompose the protein and a decomposition product thereof in the latex, and removing the protein and the decomposition product thereof; a low allergic natural rubber obtained by a decomposition treatment of a protein, wherein the protein and a protein decomposition product, which have a number-average molecular weight of 4500 or more, are not detected; and a deproteinized natural rubber obtained by a decomposition treatment and a removing treatment of a protein, wherein the content of the protein is 0.02% or less in terms of a nitrogen content, an absorption at 3280 cm−1 is not recognized in an infrared absorption spectrum, and the protein and a protein decomposition product, which have a number-average molecular weight of 4500 or more, are not detected.
摘要翻译： 一种制备不太可能引起过敏的低过敏性天然橡胶胶乳的方法，包括向天然橡胶胶乳中加入具有外肽酶活性的蛋白酶，并使天然橡胶胶乳老化，从而将胶乳中的蛋白质分解至此程度 没有检测到数均分子量为4500以上的蛋白质和蛋白质分解产物; 一种制备不太可能引起过敏的脱蛋白天然橡胶胶乳的方法，包括向天然橡胶胶乳中加入碱性蛋白酶，从而分解胶乳中的蛋白质，加入具有外肽酶活性的蛋白酶，从而进一步分解 蛋白质及其分解产物，除去蛋白质及其分解产物; 通过蛋白质的分解处理获得的低过敏性天然橡胶，其中未检测到数均分子量为4500以上的蛋白质和蛋白质分解产物; 以及通过分解处理和蛋白质去除处理得到的脱蛋白天然橡胶，其中，以氮含量计，蛋白质的含量为0.02％以下，在3280cm -1的吸收在 红外吸收光谱，并且没有检测到数均分子量为4500以上的蛋白质和蛋白质分解产物。
-
-
-
-
-
-
-
-
-
搜索结果
62 条记录 (耗时 0.027 秒)
