baber/WOPTO huggingface dataset:
Patent EP-0985128-B1 (EP)
Inventor: O'DWYER JAMES MICHAEL
IPC: F42B14/02
Filed: 1998-06-02
Granted: 2006-11-08
Abstract: A barrel assembly comprising a barrel (37); a plurality of projectiles (30) axially disposed within the barrel for operative sealing engagement with a bore (36) of the barrel; and a plurality of discrete propellant charges for propelling each projectile of the plurality of projectiles sequentially through a muzzle of the barrel (37). Each projectile of the plurality of projectiles includes a tapered anvil portion (31); a sealing portion (35) extending about the tapered anvil portion for sealing engagement with the bore (36) of the barrel (37) upon the projectile being inserted into the barrel before firing, the sealing portion being forwardly moveable relative to the tapered anvil portion for operative freeing from the tapered anvil portion and for providing a bypass passage between propellant charges. The tapered anvil portion (31) includes an anvil extension forming a spine (33) abutting the tapered anvil portion of a trailing projectile of the plurality of projectiles, whereby if the tapered anvil portion of the trailing projectile of the plurality of projectiles has an increased resistance to forward movement, the sealing portion (35) of the trailing projectile is urged to move forward along the tapered anvil portion by exposure of a rear face (38) of the sealing portion to respective ones of the plurality of discrete propellant charges for forward propulsion of the sealing portion (35) relative to the tapered anvil portion (31).
Patent EP-1023703-B1 (EP)
Inventor: LEE ALSON
IPC: G07F7/10
Filed: 1998-10-13
Granted: 2004-06-09
Abstract: Cette personnalisation de cartes à puce comprend un processus de préparation préalable à la session de personnalisation, laquelle s'effectue au niveau du bureau de personnalisation. Ce processus de personnalisation dérive les clés dérivées pour la carte et destinées à une ou plusieurs applications, et il produit également des paires et certificats de clés publiques relatives à l'émetteur et à la carte. Des clés maîtresses sont utilisées conjointement avec le processus de préparation de la personnalisation, plutôt que lors du reste du processus de personnalisation, au niveau du bureau de personnalisation. Etant donné que ce processus de préparation de personnalisation ne nécessite par un appareillage hautement spécialisé et cher, l'émetteur peut facilement dériver les clés de la carte, à l'endroit où il est situé. Une fois achevé le processus de préparation de personnalisation, les clés dérivées sont conservées dans un fichier de sortie combiné à d'autres données de personnalisation de la carte. Le fichier de sortie contient les enregistrements des données secrètes et non secrètes de la carte, chaque enregistrement correspondant à des informations de personnalisation d'une seule carte à personnaliser. Le fichier de sortie est envoyé au bureau de personnalisation, lequel traite le dossier au moyen de modules de traitement classiques, afin de personnaliser chaque carte à puce. Les processus de préparation et de personnalisation peuvent s'effectuer au même endroit ou dans des endroits différents.
Patent EP-1028944-B1 (EP)
Inventor: MANERO JAVIER
IPC: C07D405/12
Filed: 1998-11-03
Granted: 2006-01-11
Abstract: The invention relates to fluorinated naphthalene derivatives of formula (I) R?1(-A1-M1)¿a(-A2-M2)b-B(-M3-A3)c(-M4-A4)d-R2, wherein B is (II) having the meaning (III), (IV) or (V) or is (VI) and R?1(-A1-M1)¿a(-A2-M2) and (-M?3-A3)(-M4-A4)R2¿ stand for mesogene radicals. Said derivatives can be used as constituents for liquid crystal mixtures, more particularly for ferroelectric liquid crystal mixtures.
Patent EP-1034668-B1 (EP)
Inventor: ROHANI KAMYAR
IPC: H04W36/06
Filed: 1998-10-27
Granted: 2006-01-04
Abstract: Un système de communication permet les communications sans fil dans une zone de couverture et comprend une station de base (100) ainsi qu'une station mobile (290). La station de base (100) comprend une pluralité de secteurs (210, 220, 230, 240, 250, 260) dans lesquels une pluralité correspondante de signaux pilotes (212, 222, 232, 242, 252, 262) sont transmis. Un secteur (210) transmet un signal (215) de liaison aval et un signal de message comprenant une liste d'une pluralité de secteurs candidats d'une routine de transfert sans rupture. Un procédé et un appareil de détermination de la liste de candidats consistent à mesurer un signal (215) de liaison inverse lequel est reçu par la pluralité de secteurs. Ensuite on compare le niveau du signal de liaison inverse reçu par le secteur (210) aux niveaux de signaux de liaisons inverses reçus dans d'autres secteurs de la pluralité de secteurs (210, 220, 230, 240, 250, 260). Enfin, la liste de candidats est déterminée selon le résultat de la comparaison des niveaux de signaux de liaisons inverses.
Patent EP-1056722-B1 (EP)
Inventor: SINGH JANAK
IPC: C07D213/02
Filed: 1998-12-22
Granted: 2002-06-12
Abstract: La présente invention concerne un sel de bisulfate cristallisé de la formule (II) présentant un coefficient de solubilité et une vitesse de dissolution élevés inattendus, ainsi qu'une biodisponibilité orale relativement à la forme de la base libre du composé azapeptide inhibiteur de la protéase du VIH.
Patent EP-0962546-B1 (EP)
Inventor: SEIFERT MARTIN
IPC: C23C14/24
Filed: 1999-05-12
Granted: 2001-03-07
Abstract: The ceramic evaporator boat has a cross-sectional area which is greater than that of a triangular evaporator boat of the same width and height. At the same time, it has a smallest cross-sectional circumference which is less than the corresponding circumference of a rectangular evaporator boat of the same width and height.
Patent EP-0997558-B1 (EP)
Inventor: KUPPER RICHARD
IPC: B01D3/00
Filed: 1999-07-21
Granted: 2003-11-19
Abstract: Evaporators are operated by heat extracted from a process bath cooling water. The installation incorporates a rinsing water circulation system (2) comprising a distillate collector tank (D), rinsing baths (S1, S2), and an evaporator unit (VD1, VD2).  It also incorporates a cooling water circulation system for cooling at least on process bath (B, E), and a heat exchanger unit (WT1, WT2) for extraction of heat from the cooling water, for operation of the evaporators (VD1, VD2) with this heat. Preferred Features: Collector tanks (SP1, SP2) are located between the rinsing baths (S1, S2) and the evaporator unit (VD1, VD2). Each such collector tank is provided with its own evaporator unit. The heat exchanger units (WT1, WT2) have a common buffer tank (P1) intermediate storage of the heat extracted from the water cooling the process baths (B, E). Further items (R) utilizing heat stored in the tank (P1) are joined to the latter.
Patent EP-1013569-B1 (EP)
Inventor: GAERTNER FRANZ
IPC: B65G9/00
Filed: 1999-12-13
Granted: 2001-06-06
Abstract: The transport roller has two separate, mutually parallel end flanges (2,3) and an intermediate centre part (4) with a passageway (6) passing centrally between the flanges and centre part. The centre part has at least one annular peripheral part (15) that can rotate separately from the flanges. Both flanges are connected together and to the peripheral part so that both flanges are in a rest state independently of a rotation of the peripheral part caused by a contact with the conveyor track.
Patent EP-0974571-B1 (EP)
Inventor: ELSHEIKH MAHER YOUSEF
IPC: C07C17/25
Filed: 1999-07-21
Granted: 2003-04-23
Abstract: Disclosed is a process for the preparation of cis/trans 1,1,1,3-tetrafluoro-2-propene (1234 ze) which comprises (a) contacting 1,1,1,3,3-pentafluoropropane (245fa) with an alkaline solution, preferably an aqueous or alcoholic solution of a base such as KOH, NaOH, Ca(OH)2 or Mg(OH)2, or with a chromium-based catalyst, such as fluorided Cr2O3 or fluorided Cr/Ni/Alf3, and (b) recovering cis/trans 1,1,1,3-tetrafluoro-2-propene from the reaction mixture.
Patent EP-1079682-B1 (EP)
Inventor: PRATT C J
IPC: A01G7/00
Filed: 1999-05-17
Granted: 2003-07-30
Abstract: A planting system for regulating the supply of water to a plant comprises a linear (28) for containing a volume of plant growing medium (30), such as soil, and drainage means adapted to drain water from the plant growing medium (30) contained within the liner (28) and convey the drained water to a desired location. A paving system (10) comprises a permeable layer (12) providing an upper surface; at least one supporting substrate layer (20) thereunder which is permeable to liquid, a containment membrane (28) of impermeable material containing said substrate layer (20) for controlled retention of water therein and duct means for allowing the passage of water from the substrate layer (20) to a plant growing medium (30).
Patent EP-1105612-B1 (EP)
Inventor: VENTURI FERNAND
IPC: E06B3/30
Filed: 1999-07-09
Granted: 2003-03-26
Abstract: The invention concerns a central astragal structure for a metal casement door or window with two leafs with concealed panel. The moulded opening profile (15) of the semi-fixed leaf comprises a housing for receiving a synthetic material insulating section (18) which receives a linking tab (21) of the astragal profile, fixing means which ensures that said astragal profile is fixed to the panel profile (14). The invention is particularly concerned with a central astragal point for a metal door or window comprising heat insulation.
Patent EP-1101136-B1 (EP)
Inventor: EISENBERGER CHRISTIAN
IPC: H04B10/24
Filed: 1999-07-14
Granted: 2007-06-27
Abstract: An optoelectronic transceiver including an optoelectronic transmitting unit disposed along an optical axis and having a radiation-emitting layer region and an active radiation-sensitive layer region. The optoelectronic transceiver further including an optoelectronic receiving unit disposed along the optical axis and is disposed in bridge-like fashion above the optoelectronic transmitting unit. The optoelectronic receiving unit having an active radiation-sensitive layer region disposed perpendicular to the optical axis and located in a thin membrane, which is disposed immediately in front of the radiation-emitting layer region of the optoelectronic transmitting unit, and a radiation-emitting layer region.
Patent EP-1131568-B1 (EP)
Inventor: KAPAAN HENDRIKUS JAN
IPC: F16D65/14
Filed: 1999-11-16
Granted: 2003-08-27
Abstract: Cet actionneur à vis comprend une vis et un écrou, dotés chacun d'au moins une gorge hélicoïdale, ainsi qu'une série de galets ou billes, entrant en contact de roulement avec lesdites gorges. On a monté un manchon qui entoure au moins partiellement l'écrou, ce manchon pouvant porter un joint agissant entre l'écrou et la vis, par exemple un joint racleur. On peut raccorder ce joint de manière fixe à l'écrou, et de façon qu'il entre en contact de friction avec la vis.
Patent EP-1135044-B1 (EP)
Inventor: PEERS PHILIPPE
IPC: A23L15/00
Filed: 1999-12-02
Granted: 2005-09-07
Abstract: A process and device for producing eggs in various forms, such as among others boiled, poached or deep fried eggs, or their separate component parts, i.e. the yolk or egg white thereof or whole egg, called hereinafter the eggs. The eggs are moved in moulds through two chambers, a first one in which water vapour is maintained at a temperature which is sufficient to bring the eggs superficially in a state allowing to direct the moulds further through a second chamber in which the boiling process is completed by circulating the moulds in this chamber through boiling water, oil, steam or an appropriate liquid.
Patent EP-1125092-B1 (EP)
Inventor: HANSEN AKE
IPC: F41G7/30
Filed: 1999-10-06
Granted: 2008-04-02
Abstract: A process for determining roll angle of a body launchable from a launcher. At least one inducing field is induced in the launchable body. A polarized carrier wave is transmitted from the launcher to the launchable body. The transmitted polarized carrier wave is detected in the launchable body with respect to rotation of the launchable body. The detected transmitted polarized carrier wave and the inducing field are analyzed to establish the roll angle as the launchable body leaves the launcher.
Patent EP-1138075-B1 (EP)
Inventor: JAN CHIA-HONG
IPC: H01L29/78
Filed: 1999-11-04
Granted: 2006-04-26
Abstract: L'invention concerne un procédé et un dispositif améliorant la résistance du siliciure auto-aligné dans des grilles en polysilicium sous 0,20 νm. Les divers modes de réalisation de l'invention ont trait à la formation de structures d'électrodes de grille présentant des éléments d'espacement évidés et partiellement évidés. Un mode de réalisation concerne une structure (220) d'électrode de grille présentant des éléments d'espacement intérieurs épais évidés (230) et des éléments d'espacement extérieurs épais (240). Un autre mode de réalisation concerne une structure (320) d'électrode de grille présentant des éléments d'espacement intérieurs évidés minces (330) et des éléments d'espacement extérieurs évidés épais (340). Un autre mode de réalisation concerne une structure (420) d'électrode de grille présentant des éléments d'espacement intérieurs minces (430) et des éléments d'espacement extérieurs (440) partiellement évidés. Un autre mode de réalisation concerne une structure (520) d'électrode de grille à deux piles d'espacement. La pile d'espacement extérieure présente des éléments d'espacement intérieurs minces évidés (550) et des éléments d'espacement extérieurs épais évidés (560). La pile d'espacement intérieure présente des éléments d'espacement intérieurs minces (530) et des éléments d'espacement extérieurs minces (540). Un autre mode de réalisation a trait à une structure (620) d'électrode de grille présentant deux piles d'espacement. La pile d'espacement extérieure présente des éléments d'espacement intérieurs minces évidés (650) et des éléments d'espacement extérieurs épais évidés (660). La pile d'espacement intérieure présente des éléments d'espacement intérieurs minces évidés (630) et des éléments d'espacement extérieurs minces évidés (640).
Patent EP-1140993-B1 (EP)
Inventor: JUDICE J KEVIN
IPC: A61K/
Filed: 1999-12-22
Granted: 2003-06-11
Abstract: Disclosed are derivatives of glycopeptide compounds having at least one substituent of the formula: —Ra—Y—Rb—(Z)x where Ra, Rb, Y, Z and x are as defined, and pharmaceutical compositions containing such glycopeptide derivatives. The disclosed glycopeptide derivatives are useful as antibacterial agents.
Patent EP-1139989-B1 (EP)
Inventor: HOEFFKES HORST
IPC: A61Q5/10
Filed: 1999-12-14
Granted: 2006-10-18
Abstract: The present invention relates to a composition for coloring keratinaceous fibers and a method of using the same. The composition of the present invention contains (a) at least one pyrimidine derivative and (b) at least one compound selected from an m-phenylene derivative, an m-aminophenol derivative, a pyridine derivative, a resorcinol derivative, a methylenedioxybenzene derivative, or 3,4-diaminobenzoic acid or combinations thereof. The method of the present invention includes applying the coloring composition to keratin-containing fibers and subsequently rinsing the coloring composition from the fibers.
Patent EP-1145600-B1 (EP)
Inventor: TOERNGREN PER
IPC: H05B6/68
Filed: 1999-12-23
Granted: 2006-11-08
Abstract: Cette invention a trait à un four à micro-ondes ainsi qu'à une technique de traitement d'aliment congelé dans un four à micro-ondes (1), lequel four comprend une source de micro-ondes (3), une cavité (2) et une unité de commande (5). Cette dernière est pourvue d'un signal d'entrée contenant des données relatives au poids de l'aliment et excitant la source de micro-ondes pour que celle-ci émette des micro-ondes à une puissance moyenne élevée vers la cavité, à deux intervalles de temps séparés par un temps de pause de manière que l'aliment soit quasiment décongelé lorsque s'achève la seconde période de fonctionnement du four à micro-ondes.
Patent EP-1148926-B1 (EP)
Inventor: LONCKE JAN
IPC: B01D39/20
Filed: 1999-12-09
Granted: 2003-07-30
Abstract: A layered filtering structure (10) comprises at least a first layer (12) and a second layer (13). Each layer comprises a web of metal fibers which has been sintered. The two layers (12, 13) are in contact with each other. The first layer, most close to the filter inlet side has a porosity below 55 %, and the second layer, closer to the filter outlet side has a porosity which is at least 20 % greater than the porosity of the first layer. The first layer is compacted in a separate manufacturing step. The layered filtering structure combines the advantage of a small filter rating with a low pressure drop. <IMAGE>
Patent IT-1304440-B1 (IT)
Title: Preparation of novel coupled polymer by using a particular coupling agent
Inventor: CHI-CHEN HSIEH HENRY
IPC: C08F/
Filed: 1998-12-18
Granted: 2001-03-19
Abstract: A coupled linear polymer is prepared by reacting a living alkali metal-terminated polymer with a coupling agent. A coupled linear polymer is prepared by reacting a living alkali metal-terminated polymer with a coupling agent. The living alkali metal-terminated polymer has the formula P-M, in which M is an alkali metal, P is a polymeric carbanion of one or more conjugated dienes having 4-12C atoms, and one or more monovinylarenes having 8-18C atoms. The coupling agent has the formula (I). [Image] R1 and R3aliphatic alkyl and alkenyl, H, and R2alkylene, alkenylene, divalent cycloalkylene, divalent arenyl, or 1-17C divalent hydrocarbyl containing ether group.
Patent IT-1299625-B1 (IT)
Title: Hot and cold water mixing valve with closing lock -
Inventor: ORLANDI ALESSIO
IPC: F16K/
Filed: 1998-03-04
Granted: 2000-03-24
Abstract: The present invention pertains to a hot and cold water mixing valve, which comprises the means of locking (20, 21) the closing movements of the movable plate by means of the control lever (15), which are mounted in the pulling disk (14) of the said plate in a plane at right angles to the oscillation movements of the said lever on the respective cross pin.
Patent IT-1278404-B1 (IT)
Title: Method and equipment for preparing and controlling the operating cycle in a textile machine
Inventor: SCIACCA FRANCO
IPC: D04B/
Filed: 1994-06-10
Granted: 1997-11-20
Abstract: The present invention relates to a method and equipment for automating an electronic stocking machine by means of a data program obtained from the yarns and from a plurality of parts and/or functions of the said machine which contribute to the formation of the article with the aid of suitable devices or automatic systems which can modify the positions of the parts and/or functions in order to restore the acceptable parameters which have been previously stored, or to produce new parameters which may be partial and may be different from the preceding ones but are combined in order to balance the negative tolerances with the positive ones within standard general parameters in the finished article. There is self-diagnosis of errors and subsequent self- resetting, partial if necessary, of elements and/or parts of the machine which may have an effect on the parameters of the production cycle. <IMAGE>
Patent IT-1277302-B1 (IT)
Title: Device for broadcasting and receiving radio waves, to be inserted in anticollision vehicle radar
Inventor: PAOLETTI PAOLO ALBERTO
IPC: G01S/
Filed: 1995-01-04
Granted: 1997-11-05
Abstract: Device for broadcasting and receiving radio waves, to be inserted in small radar systems to prevent vehicle collisions; essentially consisting of a body in the shape of a trumpet, which may be curved to reduce its length, having the function of an antenna, in direct connection with resonating cavities and electronic components able to generate and detect radio waves. The invention lies in the field of radiofrequency and microwave devices, and finds application in general in the field of telecommunications, and in particular in the automotive field or wherever it is necessary to detect obstacles and presences. With regard to the prior art, the invention has advantages of an economic, practical, simplicity and footprint nature. <IMAGE>
Patent IT-1285132-B1 (IT)
Inventor: GROSSI IMPERIO
IPC: F16H3/74
Filed: 1996-04-29
Granted: 1998-06-03
Abstract: The invention relates to a device for continuously varying a rotative speed, including a first (1, 2, 3) and a second (4, 5, 6) differential assembly, each one including a plurality of functionally interconnected wheels, the first differential assembly being arranged on the drive shaft and the second differential assembly being arranged on the driven shaft, said first and second differential assembly reciprocally interacting by means of the coupling of at least a wheel (2) of the first assembly witha wheel (4) of the second assembly. <IMAGE>
Patent JP-2972183-B1 (JP)
Title: 豆腐の製造法
IPC: A23L11/00
Filed: 1998-05-28
Granted: 1999-11-08
Abstract: 【要約】
【課題】  豆乳種による品質変動が少なく、また風味的 にも良好な豆腐を提供する。
【解決手段】  高温の豆乳に苦汁分散型凝固剤を分散さ せ、凝固反応を行わせる豆腐の製造法であって、凝固に 用いる豆乳の温度を、該豆乳の凝固開始温度の±10℃の 範囲に制御すると共に、分散１分後の豆乳中の塩化マグ ネシウムの溶解量が60重量％以下、分散10分後の該溶解 量が65〜100 重量％になるように豆乳中の苦汁分散型凝 固剤の溶解性を制御する。
Patent JP-2944036-B1 (JP)
Title: ジェットバーナによる乾燥粉砕処理方法及び処理装置
IPC: B02C19/06
Filed: 1998-06-12
Granted: 1999-08-30
Abstract: 【要約】
【課題】  有機無機の強粘性スラリー等の含油及び／又 は含水原料を乾燥粉砕処理するための装置に関し、処理 タンクと乾燥粉体回収器との簡素化を図ること。
【解決手段】  処理タンク３内に乾燥粉体回収器５を配 置した。
Patent JP-2959557-B1 (JP)
Title: 物体検出装置
IPC: G01V8/20
Filed: 1998-06-29
Granted: 1999-10-06
Abstract: 【要約】
【課題】  センサヘッドから光ビームを回帰反射体に投 光走査し、その光ビームの反射光を受光したかどうかに よって物体を検出する物体検出装置の検出領域が、回帰 反射体付近ほど大きく、センサヘッド付近ほど小さかっ たため、センサヘッド付近を通過する物体を検出するこ とができなかった。
【解決手段】  光ビーム投光走査平面上でセンサヘッド を上下に配置し、それぞれのセンサヘッドからの光ビー ムを同一の回帰反射体に対して投光走査させることによ ってセンサヘッド付近の検出領域を大きくした。
Patent JP-2926052-B1 (JP)
Title: コイルボビン
IPC: H01F41/12
Filed: 1998-07-16
Granted: 1999-07-28
Abstract: 【要約】
【課題】  リードフレーム挿入部の幅を従前のものより 広くし、これによって本数も少なくし、金型のリードフ レーム挿入部の加工を容易としたコイルボビンを提供す る。
【解決手段】 リードフレーム挿入部を金型内にセット し、金型に樹脂を注型してコイルボビンを成型するタイ プのコイルボビンにおいて、リードフレーム挿入部の幅 を従来のものより広くし、かつ、本数も少なくし、その 結果、それに対応して金型の溝幅ａを広くでき、溝数も 削減でき、リードフレーム挿入部の金型加工を容易とす る構成とした。
Patent JP-3001157-B1 (JP)
Title: リクライニング式の座席
IPC: B60N2/02
Filed: 1998-08-11
Granted: 2000-01-24
Abstract: 【要約】
【課題】組立部材に組立作業を難しくするクッション材 等が装着された場合においても容易な組立が行える座席 およびその製造方法を提供する。
【解決手段】背もたれ部を支持するU字型のバックフレ ームと，座席部を支持する取付けフレームとを有し，バ ックフレームの両端部には連結部が設けられ，取付けフ レームには，連結部の両方と回転自在に連結する取付け 部がそれぞれ設けられ，該取付け部の少なくとも一方に は，背もたれ部と座席部とがなす角度を所定に維持する ための回転部材が取り付けられ，この回転部材を介して 取付け部と連結部とが連結され，背もたれ部と座席部と の角度を調節可能となるリクライニング式の座席であ る。回転部材は，連結部の周囲縁と整合する形状をも ち，さらに突起を有する仮止め部を有する。連結部の周 囲縁に，突起を受け入れる受入れ部が設けられている。 取付けフレームの取付け部にバックフレームの連結部を 連結するときに，突起部を受け入れ部に入れることによ り，仮止めすることができる。
Patent JP-3081609-B1 (JP)
Title: コネクター
IPC: F16L33/28
Filed: 1999-09-14
Granted: 2000-08-28
Abstract: 【要約】
【課題】  本発明は、漏洩防止を図ることができるコネ クターのシール部材についてである。
【解決手段】  本発明は、可とう管の外周面に螺旋状に 形成の凹溝１ａに嵌合可能に、シール部材１５の内周面 に凸状体１５ｂを形成する。
Patent MD-4727-B1 (MD)
Title: Saccharomyces cerevisiae yeast strain for the production of dry white wines
Inventor: TARAN NICOLAE
IPC: C12R1/865
Filed: 2019-12-04
Abstract: The invention relates to oenology and biotechnology, in particular to a local yeast strain, isolated in the wine center “Trifesti”.The Saccharomyces cerevisiae yeast strain is deposited in the National Collection of Nonpathogenic Microorganisms of the Institute of Microbiology and Biotechnology under the number CNMN-Y-34 and is recommended for the production of dry white wines.
Patent NO-329079-B1 (NO)
Inventor: WENDEROTH BERND
IPC: C10L1/14
Filed: 2001-04-19
Abstract: The mixture contains(a) from 5 to 95% by weight of at least one reaction product of a poly(C2-20-carboxylic acid) having at least one tertiary amino group with secondary amines and(b) from 5 to 95% by weight of at least one reaction product of maleic anhydride and a primary alkylamine.