baber/WOPTO huggingface dataset:
Patent ES-2626572-B1 (ES)
Title: Convertidor de potencia resonante de frecuencia dual apto para su uso en aplicaciones de calentamiento por inducción
Inventor: SARNAGO ANDIA HÉCTOR
IPC: H05B6/04
Filed: 2016-01-25
Granted: 2018-06-14
Abstract: Convertidor de potencia resonante de frecuencia dual apto para su uso en aplicaciones de calentamiento por inducción.#La invención se refiere a un convertidor de potencia resonante de frecuencia dual, apto para su uso en aplicaciones de calentamiento por inducción, que comprende una etapa de potencia formada por una rama de generación de tensión cuadrada V{sub,O,LF} de frecuencia f{sub,O,LF} y corriente i{sub,o,LF}, conectada a una rama de generación de tensión cuadrada V{sub,O,HF} de frecuencia f{sub,O,HF} y corriente i{sub,O,HF}. Ventajosamente, la salida de la rama de generación de frecuencia f{sub,O,LF} se encuentra conectada a una impedancia Z{sub,LF} que comprende al menos un condensador C{sub,r,LF} y una bobina L{sub,r,LF}; la salida de la rama de generación de frecuencia f{sub,O,HF} se encuentra conectada a una impedancia Z{sub,HF} que comprende al menos un condensador C{sub,r,HF}; las salidas de las impedancias Z{sub,LF} y Z{sub,HF} se encuentran conectadas a la entrada de una carga de inducción (R{sub,eq}, L{sub,eq}) con corriente i{sub,O}; y la salida de la carga de inducción (R{sub,eq}, L{sub,eq}) se encuentra conectada a las entradas de ambas ramas de generación de tensión V{sub,O,LF} y V{sub,O,HF}.
Patent HR-P20010918-B1 (HR)
Title: Endoparasiticidal compositions
Inventor: HARDER ACHIM
IPC: A61P33/10
Filed: 2001-12-11
Abstract: The invention relates to the use of piperazines for potentiating the endoparasiticidal action of cyclic depsipeptides in endoparasiticidal agents. Said depsipeptides are comprised of amino acids and hydroxycarboxylic acids serving as ring structural elements and having 24 ring atoms. The invention also relates to agents of this type and to the use of piperazines and cyclic depsipeptides, said depsipeptides being comprised of amino acids and hydroxycarboxylic acids serving as ring structural elements and having 24 ring atoms, in order to produce endoparasiticidal agents.
Patent HR-P20040107-B1 (HR)
Inventor: BOMBARDA CARLO
IPC: A61K31/496
Filed: 2004-01-30
Abstract: Kristalni polimorf A (oblik A) flibanserina 1naznačen time, da ima endotermni maksimuma od 161°C utvrđen termalnom analizom putem DSC. Patent sadrži još 9 patentnih zahtjeva.
Patent JO-2997-B1 (JO)
Title: A support for presenting information
Inventor: L HOTEL FRANCOIS
Filed: 2005-12-29
Granted: 2016-09-05
Abstract: The support comprises at least one sheet(2) of a substantially rigid and foldable material having a display face(3) elastic return and constraint bands (44) for making the display face of the sheet convex, and a plurality of inserts (18-20) for keeping the display face fo the sheet in the convex state, opposing the elastic constraint bands, and exerting their force in a discreaterly distributed way along the said display face of the sheet, the inserts (18-20) have a length equal to the distance between the two lateral edges(8.9) of the sheet(2) in its convex state, the sheet being extended by two sets of lateral tabs(12.13.14.15.16.17) intended to form two sets of dihedrals for receiving the inserts, the elastic bands (44) interacting with the inserts and the tabs(12-17) and exerting, in addition to their horizontal constraint force, vertical forces in opposite directions (49.50) to keep the inserts at the correct height in the convex state of the display face Figure for the abstract: figure 1
Patent KR-810001213-B1 (KR)
Title: Grinding apparatus on the button
Inventor: SON YUNG MAN
IPC: A44B1/00
Filed: 1980-03-26
Granted: 1981-09-29
Abstract: In order to grind the surface of synthetic resin button attached to the jerk of the main axis of rotation, bracket of cutter was adhered to the moving object with being shaked right and left, and crank axis rotated with voluntary ratio of rotation.  The convex and concave figure of roundish polygon was formed by means of movement of cutter according to the shake of the connecting rod of crank and bracket.
Patent KR-850000922-B1 (KR)
Title: Method for control closing and rotating rigid marine sail
Inventor: SENO AKIRA
IPC: B63B49/00
Filed: 1981-07-21
Granted: 1985-06-28
Abstract: A rigid sail comprising at least two sail portions which are fitted in front of a mast(1) rotate around and parallel  with the vertical axis is controlled to respond to wind velocity and direction. The wind velocity and direction signals from a meter are smoothed by a calculating device at prescribed intervals of time. The opening and closing of at least two sail portion are determined by the device on the basis of smoothed wind velocity and direction signals. An optimum sail angle reative to the horizontal reference line of the ship is determined by the device.
Patent KR-880002241-B1 (KR)
Title: Method for making solution of containing hydrolyzed organotin siloxane polymer
Inventor: GYSEGEM ALBERT PETER
IPC: C08L83/04
Filed: 1981-11-12
Granted: 1988-10-20
Abstract: A method comprises (i) mixture of  organotin R-oxy siloxane (R=1-6 (alkoxy)alkyl radical), water miscible solvent, hydrolysis catalyst and water immiscible solvent, (ii) hydrolysis of organotin R-oxy siloxane and (iii) removal of R-alcohol.  React ethylsilicate 40(533.2g) with tributyltin acetate (623.7g) to obtain tributyl tin ethoxy siloxane (1000g), distill to remove ethylacetate, mix with EtOH 500g, 2-ethylaminoethanol 20g and xylene 200g, heat at 50 deg.C, slowly add water 61g for 15 min with vigorously stirring, distill to give 942.5g of xylene contg. tributyltinsubstd. siloxane polymer.
Patent KR-880001044-B1 (KR)
Title: Microsurgical foam needle control package
Inventor: KUBAS ROBERT J
IPC: A61B17/06
Filed: 1981-12-10
Granted: 1988-06-18
Abstract: The structure package has a foam needle-holding receptacle which is mounted on the centre panel of the package.  The structure is coiled around the holder in a figure-of-eight configuration and is held in place by insertion into a second foam receptacle which has a slit in one side.  A flap is attached to each side of the center panel and a slit in the centre panel receives the distal corner of one of the flaps.  An arcuate slit on this flap receives the free edge of the other overlying flap.
Patent KR-840000381-B1 (KR)
Title: A method for the manufacturing of the scamless sweater
Inventor: CHOE HWANG-KYU
IPC: D04B1/24
Filed: 1982-10-30
Granted: 1984-03-27
Abstract: A seamless sweater is woven beginning with the lower part of the sleeve first.  The lower part of the body is woven next using an ordinary process. Between the body line (K-K') and the upper line (L-L') of the sleeve, the sleeve part is woven in the same fabric width but the meshes are sequentially shifted inside.  The body part is woven by reducing the needling from both ends.
Patent KR-860001147-B1 (KR)
Title: A process for producing composition forlong acting nicardipine preparation
Inventor: SANOBE TAKASHI
IPC: A61K9/24
Filed: 1982-12-23
Granted: 1986-08-18
Abstract: Long acting nicardipine (I) or its salt was prepd. by coating nicardipine(salt) and pH-dependent additive on small particle cores, Nonpareil 103. Thus, 728.6g Nonpareil was spray-coated with 1.2 kg soln. of 80g I, 80g hydroxypropyl methylcellulose phthalate HP55 and 20g Tween 80 in 1:1 MeOH-C2H2 to give globular granules. The granule was dried for 4hr at 40 C and capsulated to form capsulated prepns. (I) is useful in treatment of disturbance of the cerebral blood vessel, hypertension and angina pectoris.
Patent KR-870000386-B1 (KR)
Title: Fastener
Inventor: YASUI MASAYUKI
IPC: F16B7/22
Filed: 1983-03-02
Granted: 1987-03-07
Abstract: Inside apparatus(1) has more than one pair of screwed inclined extruded and hollowed pieces (3,3')(4,4') around the shaft line. Extruded and hollowed pieces (5,5')(6,6') of an outside apparatus (2) are assembled with those of the inside apparatus. The pieces (3,3', 4,4', 5,5', 6,6') are established on the vertical contact plane of the shaft not to interfere with each other. The apparatus has a plane portion(7,8,9,10) between the pieces. For a comfortable joint the center angle of the plane portion is larger than that of the pieces. A stopper (11,12) of the inside apparatus prevents the moving of the apparatus (1,2) when tension is placed on the apparatus.
Patent KR-870000207-B1 (KR)
Title: Process for preparation of thieno-pyridinone derivatives
Inventor: FREHEL DANIEL
IPC: C07D495/04
Filed: 1983-06-10
Granted: 1987-02-16
Abstract: Tetrahydro-thieno pyridinone of formula (I) and its mineral and organic salts are pref. prepd. by (a) nitrosation of (II) pref. with NaNO2 and glacial acetic acid to give the keto-oxime (III); (b) hydrogenation of (III), pref. in the presence of a catalyst such as Pd and perchloric acid to give (IV). (IV) is then treated with acid to obtain(I). (I) inhibit platelet agrregation.
Patent KR-860001128-B1 (KR)
Title: Circuit arrangement for reconstructing noise affected signals
Inventor: EASHIGAGI YUGINOBU
IPC: H04B1/10
Filed: 1983-07-30
Granted: 1986-08-13
Abstract: A circuit reconstructs a noise-affected part of an analog signal. A timing circuit coupled to the input terminal generates a sampling pulse in response to impulse noise. A buffer amplifier is coupled to the input terminal. A sample-and-hold circuit between the buffer amplifier and the output terminal has a switching arrangement applying the analog signal to a capacitor to develop a voltage. This voltage keeps track of the analog signal waveform in the absence of noise. The voltage is held in response to the sampling pulse.
Patent KR-870001635-B1 (KR)
Title: Intergrated circuit for bridge-type rectifier
Inventor: CHO WON-JONG
IPC: H01L27/06
Filed: 1983-08-20
Granted: 1987-09-17
Abstract: This invention relates to a C-Mos type semiconductor device with integrated bridge type rectifier circuit.  So the need of connections is eliminated. and improvements are achieved in productivity and price and total volume miniaturization.  The making process includes.  Low concentration p-type and high concentration p-type and N-type impurity layers are diffused by p-Mos, N-Mos making process at low- concentration N-type substrate.  And output terminals are attached to N and p-type impurity layers.  There fore C-Mos type semiconductor device include retifier and constant vtg circuits.
Patent KR-880002464-B1 (KR)
Title: Freely revolving looper for double lock stitch sewing machines
Inventor: GUSTMANN KURT
IPC: D05B57/14
Filed: 1983-12-03
Granted: 1988-11-14
Abstract: The inner side wall (38) of a bobbin case holder (36) flows with the inner side wall (60) of a bobbin case (57).  The rear section of the bobbin case holder is an eccentric truncated cone (50) in relation to a guide rib (40).  A cone axis (51) and the axis (55) of a stud (54) run below and to the side of the axis (41)  of the guide rib, at the side of the upwards moving section of the circular path of the looper point.  The leading end face of the bobbin case is curved into mushroom shape, forming a cap (59) ranging radially ever the side wall (60).  At least the start zone of the edge section (61) lies in the plane of the movement path of the leading end of the thread deflection shoulder of the looper body.
Patent KR-910001921-B1 (KR)
Inventor: HARA GENJI
IPC: A61Q19/10
Filed: 1984-06-07
Granted: 1991-03-30
Abstract: 내용 없음.
Patent KR-890003153-B1 (KR)
Title: Gas-insulated switchgear apparatus
Inventor: AMANO NAOKI
IPC: H02B13/02
Filed: 1984-06-13
Granted: 1989-08-23
Abstract: The appts. has a busbar dividing unit including a circuit breaker of vertical type connected between main bus bars.  It has an upper electric path and a lower electric path.  Feeder units are connected by the main bus bars on the side of the bus bar dividing unit.  The lower electric path is connected to the main bus bar.  The upper electric path is connected to the main bus bar at a position displaced along the axis of the bus bar from the position opposed to the circuit breaker of vertical type.  A bus bar conductor in the case of the main bus bar is supported on a metal disc through a post spacer.
Patent KR-860001551-B1 (KR)
Title: Process for purifying a rubber
Inventor: KLEINTJENS LUDOVICUS ANNA LEON
IPC: C08F6/00
Filed: 1984-11-17
Granted: 1986-10-04
Abstract: A process for purifying a rubber, which consists of gps. derived from ethylene, C3-8 alkene-1 and diene, comprises treating the rubber with at least 20 Nm3/Kg impurities of a rubber extractant chosen from substances having critical temps. lower than 4350K. The treatment occurs at a temp. and pressure above the critical pt. of the extractant for 1 min. to 5 hrs. Pref. before treatment the rubber is freed from water so that the water content is less than 5 wt.%. The organic impurities in the rubber are reduced to a level of less than 0.2 wt.%.
Patent KR-880000526-B1 (KR)
Title: Vtr head cylinder assembly
Inventor: LEE SEUNG-JAE
IPC: G11B5/52
Filed: 1985-03-07
Granted: 1988-04-09
Abstract: The head cylinder assembly of VTR(100), can eliminate inferior ratio by correcting the inferiority of an assembly occurring during assembling work.  As the rotor (22) can be constructed by changing the angular relationship between the position of a head and the rotating signal of a fixed drum (7) and the error relationship which occurs during the assembling work of the head cylinder assembly can be confirmed by an oscilloscope, the operational efficiency increases.  The inferiority can be determined by comparing it with two pulse signals generated in the magnetic substances (24), (28).
Patent KR-920007849-B1 (KR)
Inventor: SPRIGGS DONALD R
IPC: C23C16/32
Filed: 1985-03-11
Granted: 1992-09-18
Abstract: 내용 없음.
Patent KR-880000981-B1 (KR)
Title: Process for producing soft chewing gum
Inventor: SATTOU YOSHINORI
IPC: A23G4/10
Filed: 1985-05-24
Granted: 1988-06-10
Abstract: A soft chewing gum is formulated from gum base, sucrose or dextrin (DE=2-50), glucose, amylopectin starch, glycerol, and flavorants. The gum compn. retains its fluidity at <0≰C. Amylopectin starch and glycerol increased fluidity of the chewing gum.  Thus, a compn. is given as an example which contains 150 gum base, 300 sucrose, 103.5 glucose, 16.5 amylopection starch (moisture, 36.5%), 5 glycerol, and 3Kg flavorant (strawberry).
Patent KR-930002460-B1 (KR)
Inventor: MOLLINGER PAUL J
IPC: C08J3/12
Filed: 1985-06-25
Granted: 1993-04-02
Abstract: 내용 없음.
Patent KR-900008585-B1 (KR)
Title: Gas generator
Inventor: BOLIEAU CHRISTOPHER W
IPC: B60R21/26
Filed: 1985-07-22
Granted: 1990-11-26
Abstract: A housing construction for a gas generator comprises four structural components (14a, 16a, 64, 66) which between them define an inner cylindrical chamber (34) for an ignition charge (38) and a concentric outer cylindrical chamber (36) divided into three annular compartments (72, 74, 76) for gas generant (86) and for first and second filter/coolers (88, 90) respectively. Parts (78, 80, 82, 84) provide communication between the ignition charge, the gas generant, the filter/coolers and the outside. The housing is preferably made of aluminium in the place of steel, thereby effecting a further reduction in weight while enabling manufacture in high production rates at low cost and meeting the high reliability standards required of a safety device.
Patent KR-880001780-B1 (KR)
Title: Manufacturing process for thermoplastic resin film
Inventor: CHANG SANG-HONG
IPC: B29C59/04
Filed: 1985-07-27
Granted: 1988-09-17
Abstract: The non-drawing film has different surface properties on front and rear, such as in coefficient of friction and sliding property, were prepd. by extrusion and surface treatment.  Fist, the film which extruded from the extrusion die (1) was passed between the roller (3) and the electrode (5).  The surface of the roller had many projections (height; 0.5-100 μ, density; 200-300 ea./cm2).  Next the film was cooled by contacting with the surface of the cooling roller (6).  The surface of the film contacted with the cooling roller became smooth, while the opposite surface of the film remained coarse.  The coefficient and Haze of the film were 0.9 and >=8.0%, respectively.
Patent KR-890001205-B1 (KR)
Title: Slip clutch device of control method
Inventor: YONEDA HARUAKI
IPC: F16D48/02
Filed: 1985-07-30
Granted: 1989-04-27
Abstract: The method comprises detecting actual slip (a1) in the clutch, calculating the rate of change of the actual clutch slip (a5) and calculating a slip deviation between a preset target slip and the actual clutch slip (a3).  The engaging force of the clutch is feed- back controlled in proportion to the rate of change of the actual clutch slip, obtained from these calculations, and the slip deviation so that the actual slip in the clutch is caused to approach the preset target slip.  A corrected slip is calculated from the quantity of the time change in the actual slip and the slip deviation, and the engaging force of the clutch is corrected in proportion to the same corrected slip.
Patent KR-930001980-B1 (KR)
Inventor: BARTHOLOMEW ROY E
IPC: B60T15/24
Filed: 1985-08-28
Granted: 1993-03-20
Abstract: 내용 없음.
Patent KR-910002704-B1 (KR)
Title: Process for preparing polysaccaride-protein conjugates
Inventor: MARBURG STEPHEN
IPC: A61K39/09
Filed: 1985-12-19
Granted: 1991-05-03
Abstract: Covalently-modified neutral bacterial polysaccharides; covalent conjugates of such polysaccharides linked by a bigeneric spacer, with immunogenic bacterial membrane or other proteins, which conjugates are useful components of bacterial vaccines; and methods of preparing such polysaccharides and conjugates.
Patent KR-900006992-B1 (KR)
Title: Process for preparing thienyl thiazole compounds
Inventor: KAWAKITA DAKESHI
IPC: C07D409/04
Filed: 1986-04-11
Granted: 1990-09-25
Abstract: A thienylthiazole cpd. of formula (I) or its pharmaceutically acceptable acid addn. salt is prepd. by reacting a cpd. of formula (II) with a cpd. of formual A-COOH. In the formulas, R is amino, guanidino, alkylamino, alkenylamino, phenylamino or acylamino; A is - (CH2)nN(R1R2) or -(CH2)x(CR4H)y(CH2)zXR3; R1 and R2 are each H or alkyl; R3 is H, alkyl, alkanoyl, aralkyl or heteroaryl; R4 is H or alkyl; X is O or S; n= 0-3; x, y and z= 0-3; m= 0-4. (I) has potent antiulcerative activity.
Patent KR-910009878-B1 (KR)
Title: Color television having speaker
Inventor: GOSEBERG WALTER
IPC: H04R9/02
Filed: 1986-07-28
Granted: 1991-12-03
Abstract: In this device, particularly a colour television receiver, an additional body (8) increasing the mass of the loudspeaker (4) is arranged at the loudspeaker magnet (9). This makes it possible to improve the sound reproduction and to reduce interference in the picture due to the sound in a colour television receiver. <IMAGE>
Patent KR-890004022-B1 (KR)
Title: Method for treatment of filth by microorganism
Inventor: LEE JAE-YOL
IPC: C12N1/20
Filed: 1986-08-20
Granted: 1989-10-16
Abstract: In the method, insoluble yellow pigment obtained from culturing thermophiles is converted into a soluble pigment by treating with Bacillus sp., Nocardia sp., or Fusarium sp.  The resulting pigment 1.5kg is mixed with 40g Na-acetate, 0.08g biotin, 20g propionic acid, 20g para-amino acid, 20g thiotic acid, and trace amount of Ca(OH)2 to give a growth-stimulating agent for activated sludge.
Patent KR-920002586-B1 (KR)
Inventor: FUJIOKA YOSHIKI
IPC: H02P21/22
Filed: 1986-04-15
Granted: 1992-03-30
Abstract: 내용 없음.
Patent KR-960003810-B1 (KR)
Title: Process for producing optically active benzene-sulfonamide derivatives
Inventor: OKADA MINORU
IPC: C07C303/40
Filed: 1987-07-20
Granted: 1996-03-22
Abstract: A process for producing optically active benzenesulfonamide derivative (I) which comprises decomposing m-(2-substituted-alkylaminoalkyl)benzene-­sulfonamide derivative (II) wherein R¹ and R² are selected independently from a hydrogen atom and alkyl groups; R³ is a hydrogen atom or a alkyl, hydroxyl or alkoxyl group; R⁴ is a alkyl group; R⁵ is a alkyl, carboxy-alkyl or alkoxycarbonyl-­alkyl group; and R⁶ is a substituted or unsubstituted phenyl group. The compounds of formula (II) are obtained by reacting a ketone of formula (III)
Patent KR-890004811-B1 (KR)
Title: Sewing machine
Inventor: OOSAMA HIROBUMI
IPC: D05B35/06
Filed: 1987-08-27
Granted: 1989-11-27
Abstract: Tape folder attachment for sewing machine, comprises a folder unit through which the tape is advanced up to the sewing needle, in prepn. for sewing to begin, by a reciprocable pusher shoe which operates one way and only feeds the tape as the shoe moves forwardly. Specifically the shoe is reciprocated by an air cylinder with an electrically operated control value with a manual switch.
Patent KR-950003210-B1 (KR)
Title: Rotary head drum device for vcr
Inventor: KIM JU-KYONG
IPC: G11B5/53
Filed: 1987-08-31
Granted: 1995-04-04
Abstract: The rotation head drum is constructed that a shaft housing is fixed inner of a lower drum, a shaft is rotatably set in a hole of the housing, a guide groove corresponding to a guide boss of a flange is formed on the top of the housing, an air-through groove having an air hole is formed in the middle of the housing, a lubricating oil storing groove is formed on the lower portion of the housing, a guide boss corresponding to a guide groove of a ring color is formed on the bottom of the housing, lubrication grooves are formed on the top and bottom of the external face of the shaft, a lubrication raising groove is formed on the lower portion of the shaft, and a spiral groove is formed inner of the guide groove located on the ring color.
Patent KR-910010154-B1 (KR)
Inventor: TERAMACHI HIROSHI
IPC: F16C29/06
Filed: 1987-09-07
Granted: 1991-12-17
Abstract: 내용 없음.
Patent KR-900007951-B1 (KR)
Title: Hybridomas producing monoclonal antibodies to new mucin epitopes
Inventor: LINSLEY PETER S
IPC: C12N15/00
Filed: 1987-11-18
Granted: 1990-10-23
Abstract: The hybridoma cell lines designated ATCC HB 9209, 9244, 9245, 9246, 9247, 9216, 9248, 9249, 9250, 9217, 9212, 9229, 9210, 9243, 9211 and 9365 and able to produce monoclonal antibodies (MAb) which bind to mucin antigen (MAg) are new. Also new are (1) MAb produced by these cell lines; (2) MAg epitopes reactive with MAb; (3) purified tumour- associated MAg and (4) the cell line ATCC CRL 9267 which is enriched in MAg. Mice are immunised with e.g. cancer cells, purified MAg, pleural effusion from cancer patients, etc., then spleen cells fused conventionally with murine myeloma cells. The hybridomas are cultured and supernatants screened for MAb prodn.
Patent KR-960013220-B1 (KR)
Inventor: MILLER WILLIAM GEORGE
IPC: H04N5/21
Filed: 1987-12-14
Granted: 1996-10-02
Abstract: 내용 없음.
Patent KR-960007271-B1 (KR)
Inventor: MATTSON WILLIAM F
IPC: B29C43/52
Filed: 1988-09-30
Granted: 1996-05-30
Abstract: 내용 없음.
Patent KR-930010364-B1 (KR)
Inventor: SAKUI KOJI
IPC: G11C11/4094
Filed: 1988-11-25
Granted: 1993-10-16
Abstract: 내용 없음.
Patent KR-910005550-B1 (KR)
Inventor: HONGGO HIROYAS
IPC: G02B6/00
Filed: 1988-12-07
Granted: 1991-07-31
Abstract: 내용 없음.
Patent KR-920000614-B1 (KR)
Title: Laminated structure of the helt for prers
Inventor: CHOI CHANG-SIK
IPC: B32B27/04
Filed: 1989-05-03
Granted: 1992-01-17
Abstract: The laminate structure  of  belt  for  press  comprises;  the fire- retardant   materia   (12)   comprising   silicon     rubber, fire- retardant  synthetic  resin  or  fire-retardant  rubber;  the adhsives layer (11) onto one  side  of  (12);  the  fire-retardant material layer (10) comprising mica fiber, carbon fiber or  cotton to be treated by resist printing onto (11);  the  adhesives  layer (13) onto other side of (12); the fire-retardant carpet layer (14) onto (13); and  the  laminate  structure  is  pressed.  The  obtd. laminte structure has good heat resistant properties.