baber/WOPTO huggingface dataset:
Patent CN-114204077-B (CN)
IPC: H01M8/0612
Filed: 2022-02-18
Granted: 2022-05-03
Abstract: 本发明涉及水蒸气外重整固态氧化物燃料电池技术领域，具体地说，涉及一种水蒸气流量振荡引起的SOFC系统振荡控制与优化方法。包括如下步骤：进行水蒸气外重整SOFC系统的建模；对水蒸气流量振荡的状况进行模拟及分析；引入基于模糊控制的振荡控制算法，提出控制与优化策略；根据仿真实验结果分析优化效果并应用。本发明设计通过构建水蒸气振荡模型，不需频繁在SOFC系统上进行放电实验，避免造成系统故障；分别设计单/双输入模糊控制器，通过仿真可以将SOFC系统内的温度与电压均控制在一个合理的范围，实现对系统振荡的控制；设计模糊控制规则及控制策略，实现对设定值的实时跟踪，阻止振荡在SOFC系统内的传播，从而优化系统的性能。
Patent CN-114363707-B (CN)
Title: 一种基于wifi的智能卡的本地授权方法及系统
IPC: H04N21/4367
Filed: 2022-03-17
Granted: 2022-06-28
Abstract: 本发明提供一种基于WIFI的智能子‑母卡的本地授权方法及系统。该方法包括：通过本地WIFI网络连接插有授权母卡的主机顶盒和若干插有被授权子卡的子机顶盒，由主机顶盒的操作界面开启授权通道，显示该主机顶盒产生的授权验证码和主机顶盒IP，等待子机顶盒的授权请求；通过子机顶盒的操作界面输入授权验证码和主机顶盒IP以及子机顶盒自身硬件识别信息发送给主机顶盒进行授权请求；主机顶盒对接收到的授权信息进行验证通过后，由用户确认后对所述子机顶盒(包括其中的子卡)下发授权信息以激活其中的子卡。本发明提供的智能子卡本地授权方案利用本地WIFI网络改变了传统的子‑母卡授权方式，降低了智能卡本地授权操作的复杂性。
Patent GE-P19981250-B (GE)
Title: Method for Determination of the Natural Frequency of Resonant System
Inventor: PRANGISHVILI ARCHIL
IPC: G01R27/26
Filed: 1995-12-11
Abstract: This invention refers to radio measuring technique and can be used, in particular, for determination of the natural (resonant) freqency of low-valued tuned circuits for example, for diagnosing electropower transmitting cabels and communication lines.    Technical result of the invention is to increase accuracy for determination of the natural frequency of resonant systems with great electromagnetic losses for example extended lines with distributed parameters, cavity resona-tors, etc.    The method for determination of the natural frequency of resonant system provides for the continuous feeding of the signal changeable within time to the output of the system, fixing maximal rate of the impulse level reflect-ing amplitude-frequency characteristics obtained on the output of the system, its measing, dividing its level into sublevels, measing frequencies in the cross points of the formed sublevels and amplitude-frequency characteris-tics. The value of the measured frequencies and the maximal value of the amplitud-frequency characteristics are introduced into the microprocessor of the computing device and on the basis of these datum the natural frequency of resonant system is determined.
Patent GE-P19991622-B (GE)
Title: Limiting Device for Power Supply to the Consumer in the Amount Adequate to the Preliminary Paid Cost
Inventor: PEPANASHVILI NIKOLOZ
IPC: G01R11/42
Filed: 1997-03-18
Abstract: 1. Technical Result Widening of the functional capabilities.        2. Essence The device comprises an automatic power circuit breaker, an electromagnet and a sensor. The axial sensor pusher is in contact with one of the rings of reference for induction meter on which a protuberance is made. The sensor is fixedly attached on the electromagnet armature at the retraction of which the axial pusher is released from the protuberance. The device is controlled by the key, for instance, a token having the cost of the certain amount of electric power which contains a conductor with the certain resistance or a semiconductor diode. The device effects the power delivery to the consumer in the amount adequate to the cost of the token placed therein.        3.Field of Application Automation, system for power supply.
Patent GE-P20022712-B (GE)
Title: Method for Production of Sodium Dehydroarsenate
Inventor: MITAISHVILI (GE) GULNAZ
IPC: C01G28/02
Filed: 2000-07-17
Abstract: 1. Technical Result Protection of environment and increase in yield of the final product.          2. Essence A method comprises oxidation of the interaction product of sodium alkali and white arsenic diluted by 15-20% hydrogen peroxide.          3. Field of Application Inorganic chemistry technology.
Patent GE-P20084299-B (GE)
Title: Method for manufacture of food paint
Inventor: ORAGVELIDZE NANULI
IPC: C09B61/00
Filed: 2002-12-27
Abstract: A method provides reception of juice from vegetative raw material by pressing or crushing - pressing, filtration of juice, stabilization by tea extract or a concentrate of the juice containing painting pigment, holding, and removal from a deposit, concentrating, introduction of the additive, conservation and packaging. The pressed weights is loosened and made extraction by tea extract or by mixture of tea extract and ethanol, or by the tea extract acidified by a hydrochloric acid then the received extract and the stabilized juice are mixed. Holding of the received mixture is carried out within 8-10 hours and before concentration or packaging aromatizer is entered.
Patent GE-P20084369-B (GE)
Title: Method of reception of hydrogen and methane by two-stage anaerobic fermentation of a biomass
Inventor: PARTSKHALADZE GENADI
IPC: C02F3/28
Filed: 2006-04-13
Abstract: A method provides preliminary physical processing of an initial biomass with addition of fluid carbon dioxide under high pressure and the further sharp decrease of pressure before freezing the biomass, powdering, sterilization by affecting by ultraviolet rays, hydrolysis, a stepped anaerobic fermentation in two steps and collecting biogas obtained on the first hydrogen-rich stage and on the second rich with methane stage in the form of separate products.
Patent GE-P20084521-B (GE)
Title: Martensate engine
Inventor: JORJISHVILI LEVAN
IPC: F03G7/06
Filed: 2007-03-06
Abstract: A case 1 of the engine is made in the form of the coaxial upper and lower immovable cylinders 2 and 3, in the both cylinders over the circle there are operating elements 4 and 5; in the upper cylinder 2 the lower end of the operating element 4 is fixed on the bottom 6 and the upper end – on the movable rod 7 passed through the axis of the cylinders, on the cap 8 of the lower cylinder 3 the lower end of the operating element 5 is fixed, and the upper end is fixed on the movable rod.
Patent GE-P20156360-B (GE)
Title: Sulphurated derivatives of resorcinol, preparation of same and cosmetic uses thereof
Inventor: POIGNY STÉPHANE
IPC: C07C323/20
Filed: 2010-04-08
Abstract: There is represented compound of formula (I), wherein derivative Х are S, SO, SO2, and values R1 and R2 are provided in the claims and composition on basis thereof; application thereat the cosmetics and pharmacy. Table: 	6
Patent DK-165171-C (DK)
Inventor: HILMANN JUERGEN
IPC: A61B17/225
Filed: 1984-02-20
Granted: 1993-03-01
Abstract: 1. Contrast medium containing microparticles and gas bubbles for ultrasound diagnostics, characterised in that it contains microparticles of a solid surface-active substance, optionally in combination with microparticles of a non-surface-active solid, in a liquid carrier.
Patent CA-1338705-C (CA)
Inventor: CURTISS ROY III
IPC: C12N15/00
Filed: 1982-10-15
Granted: 1996-11-12
Abstract: A vaccine for the immunization of a verte-brate comprising a non-pathogenic microbe that expresses a recombinant gene derived from an organism that is a pathogen of or that produces an allergin of said animal where the gene codes for a gene product that is an antigen capable of being recognized by the immune system of the vertebrate and inducing antibody formation against the pathogen or allergen. Also disclosed is the use of microbes of the nature described above to produce non-living vaccines comprising such gene products essentially in the absence of other antigenic material from the parent organism.  There is also disclosed another vaccine of the same type which comprises an avirulent derivative of a pathogenic microbe that expresses a recombinant gene derived from a pathogen of the vertebrate it being provided that the avirulent microbe does not normally exchange genetic material with the pathogen, to produce an antigen capable of inducing an immune response in the vertebrate against the pathogen.
Patent CA-1311429-C (CA)
Title: Vector for polypeptides in bacilli
Inventor: NAGARAJAN VASANTHA
IPC: C12N15/75
Filed: 1984-06-28
Granted: 1992-12-15
Abstract: ABSTRACT OF THE DISCLOSURE      A replicable plasmidic expression vector, capable of high levels of expression and secretion of polypeptides in a bacillus is disclosed.  The vector contains a DNA sequence comprising the promoter and regulatory regions which control expression and secretion of proteases in a bacillus operably liked to a DNA sequence encoding the amino acid sequence of a polypeptide.  The expression vector is particularly useful in the production of B. amyloliquefaciens proteases in B. subtilis.  The method facilitates the isolation of proteases from various bacilli.
Patent CA-1293490-C (CA)
Title: Method and system for cleaning an unweighted oil based drilling fluid
Inventor: MARTIN TROY J
IPC: B04B5/00
Filed: 1985-08-09
Granted: 1991-12-24
Abstract: Abstract of the Disclosure A method and system for cleaning an unweighted oil based drilling fluid containing suspended solid particles includes adding a controlled amount of water to the drilling fluid flowing in a suction line to a centrifugal separator. The addition of water to the fluid results in the particles becoming wet.  The wet particles will stick together and separate from the drilling fluid under the influence of centrifugal force.
Patent CA-1314871-C (CA)
Title: Steroids useful as anti-cancer, anti-obesity, anti-hyperglycemic, anti-autoimmune and anti-hypercholesterolemic agents
Inventor: SCHWARTZ ARTHUR G
IPC: C07J51/00
Filed: 1986-08-01
Granted: 1993-03-23
Abstract: ABSTRACT          This invention relates to novel compounds of the formula:       Y is lower alkyl; and X and Z are independently hydrogen, halogen, lower alkyl or hydroxy, or X and Z taken together are hydroxy-imino with the proviso that when Y is methyl and Z is hydrogen, X is other than methyl or hydroxy and with the further proviso that X and Z are not both hydrogen.
Patent CA-1302985-C (CA)
Title: Method of producing an absorbent article, and an article produced according to said method
Inventor: HERMANSSON JONAS
IPC: A61F13/49
Filed: 1986-10-02
Granted: 1992-06-09
Abstract: APPLICANT:  M?LNLYCKE AB            TITLE:      A METHOD OF PRODUCING AN ABSORBENT ARTICLE, AND AN ARTICLE PRODUCED ACCORDING TO SAID METHOD            ABSTRACT OF THE DISCLOSURE            The present invention relates to a method of manufacturing an absorbent article such as a diaper or an incontinence protector  comprising  an  absorbent  body  surrounded  by  a casing, as well as an article produced according to said method.            The absorbent body included in the inventive article is built  up of a bottom layer consisting of at  least  one stratum and a top layer composed of one stratum or several mutually spaced strata, said top layer being intended to fit closely to the wearer's skin during use of the article and to serve as a spacer means between the wearer's skin and the bottom layer 1 while being designed to define at least laterally a basin-like  space around the  so-called wetting point which space, due to the article being thick-er and thus more rigid within the areas around the basin--like  space  than within  the area  below said  space, is maintined and expanded when applying the article onto the wearer's body.
Patent CA-1287871-C (CA)
Inventor: BONNESEN JOHN S
IPC: H01T1/20
Filed: 1986-11-19
Granted: 1991-08-20
Abstract: IMPROVED GAS DISCHARGE ARRESTER                 Abstract of the Disclosure A gas discharge arrester in which annular bands are attached to the inside surface of the arrester,  The spacing between the bands  is  equal to or somewhat greater than the width of the inter-electrode gap.  Each band is in contact with its associated electrode.  The bands function to minimize the effect that placing the arrester in a metallic cup has on the symmetry of the electric field in the arrester, and, at the same time, act to lower the impulse breakdown of the arrester.
Patent CA-1284012-C (CA)
Title: Elevated floor panel with integral trim
Inventor: GIBSON FRANKLIN E
IPC: E04F15/024
Filed: 1986-12-29
Granted: 1991-05-14
Abstract: ELEVATED FLOOR PANEL WITH INTEGRAL TRIM                 ABSTRACT OF THE DISCLOSURE           A floor panel for elevated floors and the like is disclosed in which a high-pressure laminate floor covering is laminated to the load surface of the panel base.  The laminate is provided with a decorative ex-posed surface and an inner body portion rearwardly there-from having a color contrasting with the decorative ex-posed surface.  A border is provided around the edge of the panel by cutting away the decorative surface to ex-pose the contrasting inner body portion.
Patent CA-1289819-C (CA)
Title: Self-righting monohull vessel
Inventor: WENSTOB WAYNE B
IPC: B63C7/00
Filed: 1987-02-10
Granted: 1991-10-01
Abstract: ABSTRACT    A planing type self-righting boat having rigid pontoons forming its perimeter structure independent of interior inflation and which, during the vessel's normal operation, protect conventional or modified interior inflatable pontoons which elements together are used in whole or in part as essential mechanical components in the automatic self-righting of the vessel upon capsizing.  The self-righting of the vessel after capsizing is effected by the creation of a negative buoyancy and subsequent sinking of that portion of the vessel whereby this submerging action combined with the weight and configuration of the vessel cause it to rotate underwater to a position beyond perpendicular to its capsized position while the vessel is supported by the buoyancy retained in the remainder of its pontoon structure. Upon submerging to this underwater position, the buoyancy is then returned to the underwater pontoon assembly causing a lifting action and effecting a continuation of the underwater rotation of the vessel to the normal upright operating position at the water surface.
Patent CA-1280898-C (CA)
Title: Stepping motor and frame plate assembly for a wristwatch
Inventor: WUTHRICH PAUL
IPC: H02K5/128
Filed: 1987-02-27
Granted: 1991-03-05
Abstract: STEPPING MOTOR AND FRAME PLATE ASSEMBLY                   FOR A WRISTWATCH MOVEMENT                  ABSTRACT OF THE DISCLOSURE   A wristwatch movement has a Lavet stepping motor directly driving a center wheel attached to the minute hand.  The frame plate of the movement is of non-magnetic plastic material with recesses locating the pole shoes of two stator members of the stepping motor.  An integral plastic cylindrical wall extends from  the  recess.   The  stepping  motor  rotor  is  rotatably supported within the wall by a journal at one end in the frame plate and at the other end by a cap.  The stator pole faces are accurately spaced from the rotor by the wall and held in place by deforming plastic material against the stator pieces toward the wall.
Patent CA-1294809-C (CA)
Title: Paper machine cloth
Inventor: TAIPALE SEPPO
IPC: D21F1/00
Filed: 1987-03-03
Granted: 1992-01-28
Abstract: Abstract of the Disclosure The invention relates to a paper machine cloth which comprises longitudinal warp threads and transverse weft threads which are arranged to form a structure of three layers. In order to improve the dewatering proper-ties and the stability of the cloth, the weft threads comprise lower weft threads and surface weft threads which form layers between which intermediate weft threads are woven, the thickness of the intermediate weft threads being chosen according to the desired permeability of the cloth. (Figure 1)
Patent CA-1283995-C (CA)
Title: Anionic polymerization process
Inventor: WONG PUI K
IPC: C08C19/44
Filed: 1987-05-25
Granted: 1991-05-07
Abstract: A B S T R A C T              ANIONIC POLYMERIZATION PROCESS      Process for preparing polymers which may be coupled at temper-atures above 200 °C by first reacting conjugated dienes and/or monoalkenyl arenes with an organomonolithium initiator and then reacting the resulting polymeric arms with arylcyclobutene monomers having the formula   or   where X is alkylene or arylene, Z is arylcyclobutene and R is H, aryl, alkyl or  , R1 being aryl or alkyl.
Patent CA-1300825-C (CA)
Inventor: BLANDIN JEAN-CLAUDE
IPC: F16L11/127
Filed: 1987-09-02
Granted: 1992-05-19
Abstract: ABSTRACT OF THE DISCLOSURE            Pipe system for central suction cleaning installation.     In known manner, said pipe system comprises a group of tubes and couplings connecting a suction station to one or more suction open-ings, the tubes and couplings being equipped with low voltage elect-ric conductors for transmitting an electric stop or start signal from the station.  According to the invention, the conductors equipping the tubes are in the form of strips integral with the tubes.  Such strips can also equip the couplings.
Patent CA-1339162-C (CA)
Inventor: KORDOMENOS PANAGIOTIS I
IPC: C08G59/64
Filed: 1987-10-09
Granted: 1997-07-29
Abstract: A hydroxy functional epoxy-polyester graft copolymer and solvent-based thermosetting coating composition comprising said copolymer and polyfunctional hydroxy-reactive crosslinking agent. The coating composition may be formulated as hot sprayable, high solids coating composition suitable for use as chip resistant automotive vehicle primer suitable for use on body panel areas subject to chipping by stones, gravel and other road debris. The composition also may be formulated as a high solids composition sprayable with conventional spraying equipment. The hydroxy functional epoxy-polyester graft copolymer is the product of polymerization of lactone monomers in presence of hydroxy functional epoxy ester resin precursor. The precursor resin is the product of modified diepoxide and hydroxy functional secondary amine, the modified diepoxide being the product of the polymerization of lactone monomers in the presence of diepoxide which has been chain extended with diphenol.
Patent CA-1327230-C (CA)
Title: Method of making replaceable lamp unit for use in automobile headlight
Inventor: COLIANDRIS CHRIS
IPC: H01K1/46
Filed: 1988-01-28
Granted: 1994-02-22
Abstract: TITLE: METHOD OF MAKING REPLACEABLE LAMP UNIT        FOR USE IN AUTOMOBILE HEADLIGHT                       ABSTRACT     A method of making a replaceable lamp unit for use in an automobile headlight.  The method involves the steps of providing a metallic insert with a roughened (e.g.,  sandblasted)  surface,  inserting this member a predetermined   depth within a plastic   (e.g., thermoplastic)  holder,  and  applying  radio  frequency (RF) induction heating to the insert.  The unit's lamp may then be attached directly  (e.g.,  clamped by an extension of the insert) or indirectly  (e.g., via a two-part,  separate clamp which is secured about the lamp and is welded to a forward, curved surface of the insert).   Use  of  a  roughened  surface  enhances  the bonding operation between plastic holder and metallic insert by substantially reducing the time (e.g., from about 38 to 85 percent) for such bonding to occur. Reducing  time  at  this step  in  the  operation  also facilitates alignment of the insert and other elements of the unit.
Patent CA-1299006-C (CA)
Title: Silver halide photographic material and method for treating them
Inventor: ISHIGAKI KUNIO
IPC: G03C1/76
Filed: 1988-02-18
Granted: 1992-04-21
Abstract: ABSTRACT OF THE DISCLOSURE       A  silver  halide  photographic  material  is disclosed, having at least one hydrophilic colloid layer comprising a polyester support and having a polymer latex on at least one side of said polyester support, wherein both surfaces of said support are coated with a polymer layer comprising a copolymer containing from 50 to 99.5% by weight vinylidene chloride and wherein both polymer layers have a thickness of at least 0.3 µm.  A method for treating the silver halide photographic material is also disclosed.
Patent CA-1339042-C (CA)
Title: Nitrogen-free esters of carboxy containing interpolymers
Inventor: DISHONG DENNIS M
IPC: C10M145/16
Filed: 1988-03-18
Granted: 1997-04-01
Abstract: Nitrogen-free   esters   of   a   carboxy-containing interpolymer,  wherein the  interpolymer has  an  inherent viscosity ranging from about 0.05 to 1.5 are disclosed. The esters are useful as additives in functional fluids including transmission fluids (both automatic and manual), hydraulic  fluids  and  gear  fluids.    The  transmission, hydraulic and gear fluids containing the esters exhibit improved shear stability while maintaining desired high and low temperature viscosity characteristics.
Patent CA-1313459-C (CA)
Inventor: DORNAN ARTHUR E
IPC: E05B65/20
Filed: 1988-04-08
Granted: 1993-02-09
Abstract: KR-1376A ABSTRACT OF THE DISCLOSURE An electric door lock actuator includes an outer casing which houses a reversible electric motor. The motor is coupled to a inertial clutch assembly and a gear train to reciprocally move a rack which extends outwardly from the casing between an advanced and a retracted position. The clutch assembly includes a drive gear coupled to the electric motor, and driven gear connected to operate the rack through the gear train. The clutch also includes a inertially operated clutch plate eccentrically mounted on the clutch drive gear and having a pair of arcuately spaced driving teeth alternately operably engageable with the driven clutch gear when the motor is driven in either a forward or a reverse direction. The clutch is operative to connect the motor to either advance or retract the rack when the motor shaft is operated in either a forward or a reverse direction. When the motor is not operating, the clutch disconnects the motor shaft from the rack such that the rack can move between the advanced and retracted positions without rotating the motor shaft. - 12 -
Patent CA-1283673-C (CA)
Title: Level lift trailer suspension
Inventor: ORR CHARLES A
IPC: B62D63/06
Filed: 1988-04-18
Granted: 1991-04-30
Abstract: ABSTRACT IN A TOOL FOR TRANSPORTING ITEMS, IT IS KNOWN TO HAVE A SUSPENSION WHICH IS INDEPENDENT OF THE MAIN TRAILER FRAME, BUT WHICH SECURILY AND EVENLY ELEVATES OR LOWERS THE MAIN TRAILER FRAME FOR TRANSPORTING OR LOADING OPERATIONS. THIS INVENTION USES A MECHANICAL SYSTEM TO RAISE AND LOWER THE MAIN TRAILER FRAME IN AN EVEN MANNER. IT DIFFERS FROM OTHER SYSTEMS IN THAT THE ENTIRE TRAILER FRAME AND LOAD IS EVENLY ELEVATED AND LOWERED BY THE LIFTING SYSTEM OF THE SUSPENSION ITSELF.      SPECIFICATION THIS INVENTION RELATES TO A MECHANICALLY OPERATED SELF ELEVATING AND SUSPENSION SYSTEM USED IN TRAILER CONSTRUCTION IT IS COMMON FOR SUCH DEVICES TO DEPEND ON A LIFTING SYSTEM FOR A CARGO DECK WHICH OPERATES INDEPENDENT OF THE TRAILER ITSELF. THIS NECESSATES A SUBSTANTIAL DECK FRAME IN ORDER TO WITHSTAND THE LIFTING (OR SKIDDING) FORCES. THIS INVENTION, BY UTILIZING THE TRAILER MAIN FRAME AS THE LIFTING YOKE, ALLOWS THE DECK TO BE OF LIGHT CONSTRUCTION, SIMILIARLY, AS THERE IS NO CONCENTRATED LOAD POINTS THE DECK CAN BE CONSTRUCTED WITH A LOW PROFILE. THIS SYSTEM ALLOWS THE ADVANTAGE OF LOW LOADING HEIGHT AND ANGLE, WITHOUT LOSS OF SPRING SUSPENSION. SYSTEM WHICH OPERATE WITH INDIVIDUAL LIFTING ELEMENTS TEND TO OPERATE IN AN ERRATIC AND UNEVEN MANNER WHICH MAKES THEM UNPOPULAR AND DIFFICULT TO USE BY UTILIZING THE MECHANICAL LINKAGE OF THIS INVENTION, ALL SUCH DIFFICULTIES SHOULD BE OVERCOME.      (PLEASE REFER TO THE DRAWINGS) IN DRAWINGS WHICH ILLUSTRATE EMBODIMENTS OF THE INVENTION, FIGURE (1) IS A SCHEMATIC ISOMETRIC DRAWING OF THE INVENTION SYSTEM. FIGURE (2) IS A TOP ONE-HALF VIEW OF A TWO WHEELED TRAILER ILLUSTRATING THE TRAVEL OR ELEVATED POSITION, FIGURE (3) IS A SECTIONED ELEVATION OF A TWO WHEELED TRAILER ILLUSTRATING THE  TRAVEL OR ELEVATED POSITION, FIGURE (4) IS A SECTIONED ELEVATION SIMILIAR TO FIG.3 SHOWING THE LOAD OR LOWERED POSITION, FIGURE (5) IS A TOP ONE-HALF VIEW OF A TANDEM WHEEL TRAILER IN THE TRAVEL OR ELEVATED POSITION, AND FIGURE (6) IS A SECTIONED ELEVATION OF A TANDEM WHEEL TRAILER IN THE TRAVEL OR ELEVATED POSITION.
Patent CA-1329673-C (CA)
Title: Scorch retarder for halogenated elastomers
Inventor: WARRACH WOLFGANG
IPC: C08K5/3475
Filed: 1988-05-30
Granted: 1994-05-17
Abstract: A SCORCH RETARDER FOR HALOGENATED ELASTOMERS ABSTRACT OF THE DISCLOSURE          In accordance with the present invention there is provided a vulcanizable halogenated butyl rubber compound having an improved degree of scorch resistance without causing unreasonably long cure time.  The compound is characterized in that it comprises a retarder conforming structurally to (X)   wherein X   is a C1-C6 alkyl and n   is an integer from 0 to 4. The physical properties of the compound are substantially unchanged by the incorporation of the retarder.