baber/WOPTO huggingface dataset:
Patent KR-20090029362-A (KR)
Title: Silicon mems microphone of capacitor type
Inventor: LEE JIN HYO
IPC: H04R19/04
Filed: 2007-09-18
Abstract: A capacitor type silicon MEMS microphone is provided to have a high sensitive property by efficiently securing a sound pressure distribution space without an etching of a silicon substrate. A capacitor type silicon MEMS microphone(100) comprises a vibration plate(120), a silicon substrate(110), an insulating film(140), a capacitor(150), a sound pressure distribution space(160), and an interval support insulating film(130). The vibration plate is vibrated according to an external sound. The silicone substrate is an electrode plate of the capacitor. The capacitor converts an external sound into an electric signal. The insulating film insulates the vibration plate and the silicone substrate, and has a high dielectric constant. The sound pressure distribution space distributes a sound pressure. The capacitor reacts to the sound pressure. The interval support insulating film is positioned on the insulating film, and supports the vibration plate.
Patent KR-20090029500-A (KR)
Title: High-speed motion compensation apparatus and method
Inventor: KYUNG CHONG MIN
IPC: H04N7/32
Filed: 2007-09-18
Abstract: A high-speed motion compensation apparatus and a method thereof are provided to manage overlapped reference pixels and arrange the reference pixels distributed in word addresses, efficiently, thereby reducing the number of times of memory access. A bus interface unit(100) reads reference pixels after approaching an external memory(1100) through a bus(1200), arranges the reference pixels, and then temporarily stores them. A buffer part(200) stores and manages overlapped reference pixels among the reference pixels used for generating each sub pixel. By using the reference pixels outputted from the bus interface unit, an interpolation part(900) generates the first half pixels, the second half pixels, the first quarter pixels and the second quarter pixels. By using the reference pixels and motion vector outputted from the bus interface unit, a chroma filter part(600) generates and outputs chroma pixels.
Patent KR-20080028801-A (KR)
Title: Hard-material-coated member excellent in durability
Inventor: INOUE KENICHI
IPC: C23C14/00
Filed: 2007-09-21
Abstract: A hard material-coated member which is the most suitable as a mold for plastic working is provided to solve conventional problems involved in a mold in which wear resistance is required, and a hard material-coated member which is the most suitable as a casting member is provided to solve conventional problems, wherein the casting member is used in a state that working plane of the casting member comes into contact with a molten metal with a high temperature. A hard material-coated member with an excellent durability comprises a metal as base material and has coating layers formed on at least its working plane by a physical vapor deposition method, wherein: the coating layers comprise at least three layers, i.e., a layer a as the outermost layer, a layer c just above the base material, and a layer b formed between the layer a and the layer c; hardness values of respective layers represented by hardness symbol HV 0.025 are 2500>(the hardness of the layer a)>1000, 3500>(the hardness of the layer b)>2300, 2500>(the hardness of the layer c)>1000, (500+the hardness of the layer a)<(the hardness of the layer b), and (500+the hardness of the layer c)<(the hardness of the layer b); and the thickness of the layer b is smaller than that of the layer c, and the total thickness of the coating layers is in the range of 5 to 15 mum.
Patent KR-20080028806-A (KR)
Title: Organic electroluminescent device and method of manufacturing organic electroluminescent device
Inventor: SEKI SHUNICHI
IPC: H05B33/10
Filed: 2007-09-21
Abstract: An organic electroluminescent device and a method for manufacturing the same are provided to improve reliability by definitely separating light emitting layers functioning as a hole transport layer and an electron transport layer and stacking the layers in a coated state. An organic electroluminescent device(100) includes at least two continuous light emitting layers formed between a pair of electrodes(3,8) by a liquid phase method. The organic electroluminescent device includes a first light emitting layer(5) and a second light emitting layer(6). The first light emitting layer is formed by the liquid phase method. The second light emitting layer is formed on the first light emitting layer by the liquid phase method. An insoluble layer is not dissolved in a solvent dissolving the second light emitting layer and is formed on at least a top surface of the first light emitting layer.
Patent KR-20090036401-A (KR)
Title: Apparatus and method to analyze data in mobile communication network using ip multimedia subsystem
Inventor: CHUNG JE DON
IPC: H04L12/24
Filed: 2007-10-09
Abstract: A data analysis apparatus and a method thereof are provided to increase the utilization of information by obtaining the result analyzed by a call unit of a terminal. In case a data service provided to a terminal connecting to the IMS(IP Multimedia Subsystem) network via a wireless network, collecting units(210,220) gathers data from the first and second interfaces of the wireless network. Mapping information is generated between the first key value for managing data collected by the first interface and the second key value for managing data collected by the second interface. Based on the mapping information, an analyzer(230) analyzes a call signal while the data service is being provided to the terminal.
Patent KR-20090039087-A (KR)
Title: The winding velocity controller of bobbins for extrusion precess
Inventor: LEE SANG JUN
IPC: B29D30/08
Filed: 2007-10-17
Abstract: An apparatus for controlling winding speed of a bobbin performing an extrusion process is provided to improve productivity through increasing of winding speed of the bobbin by controlling moving speed of extruded materials through liner velocity measurement of a bobbin liner. An apparatus for controlling winding speed of a bobbin performing an extrusion process comprises the followings: an extruded material(2) extruded from an extruder(1); a control part(7) of bobbin winding speed when the bobbin(6) is winded with a liner(5) supplied to a bobbin liner(4); an extruded speed measuring unit(8) measuring the speed of the extruded material; a bobbin liner speed measuring unit(9) measuring movement speed of the bobbin liner; and a winding sped control part controlling winding speed of the bobbin.
Patent KR-20090048903-A (KR)
Inventor: PYO YOUNG HEE
IPC: A23C9/123
Filed: 2007-11-12
Abstract: 본 발명은 홍국 발효콩 추출물을 함유하는 복합 기능성 발효 두유의  제조방법에 관한 것이다. 보다 상세하게는 수침한 대두 기질에 홍국 액체배양물을 접종하여 고상발효 시킨후 열풍건조하여 에탄올로 추출한 홍국 발효콩 추출물을 제조하는 단계와, 락토바실러스 계통의 유산균 혼합균주의 배양물을 홍국 발효콩 추출물이 함유된 두유의 기질에 접종하여 발효하는 단계로 구성된다.    
     본 발명의 홍국 발효콩 추출물을 함유하는 유산균 발효두유(soy yogurt)는,  일반 두유 요거트(호상 요구르트)에 비해 잠재적 생리 활성기능이 증진될 뿐만 아니라, 천연의 항산화, 항고혈압, 항동맥경화 등의 기능성 성분이 강화된 복합기능성의 홍국 발효콩 추출물을 함유하는 발효두유 요거트를 포함한 기능성 건강식품을 제공하는 데 있다. 
       
     홍국 발효콩, 복합기능성, 항산화성, 항고혈압성, 항동맥경화성, 유산균 발효 두유
Patent KR-20090050295-A (KR)
Inventor: KIM HO KYOUNG
IPC: A61P17/00
Filed: 2007-11-15
Abstract: 본 발명은 해방풍( Glehnia       littoralis  Fr. Schmidt et Miquel) 추출물을 유효성분으로 함유하는 부종 또는 피부염 예방 및 치료용 조성물에 관한 것으로, 보다 상세하게는 물, 알코올 또는 이들의 혼합물을 용매로 하여 추출되는 해방풍 추출물은 생체 내에 존재하는 염증성 매개체인 사이토카인 조절인자들의 생산 또는 분비를 억제하고, 독성 등 부작용이 없으므로 부종 또는 염증 증상을 수반하는 다양한 피부염 예방 및 치료용 조성물로 유용하게 사용될 수 있다.  
       
     해방풍, 부종(edema), 피부염(dermatitis), 항염증, 사이토카인, 혈관 투과성
Patent KR-20090012993-A (KR)
Inventor: LEE WON MO
IPC: H01R13/46
Filed: 2007-11-21
Abstract: A rotating type on/off plug is provided to rotate only a plug by a rotative plug, thereby separating a contact point between an outlet and the plug. A protrusion(14) is formed in one side of an inner main wall of an insertion groove(12). In a lower part of a middle plug(5), a middle jack(18) is formed. A jack hole piece(21) of metal having a jack hole(22) is formed in an inner side of the insertion groove. A vertical groove(24) including an opened lower part is formed in one side of a circumference portion. A horizontal groove(26) connected to the vertical groove is formed in the circumference portion. A lamp(28) is laid in an inner side of a rotating body(20).
Patent KR-20090052423-A (KR)
Title: 디스플레이 유리기판 식각용 기판지지장치
Inventor: JANG JEONG SU
IPC: H01L21/683
Filed: 2007-11-21
Abstract: 본 발명은 디스플레이 유리기판 식각용 거치대에 관한 것으로, 더욱 구체적으로는 유리기판이 식각되는 과정에서도 식각된 부분을 안정적으로 견고하게 협지하여 유리기판을 얇은 두께로 균일하게 식각할 수 있도록 한 디스플레이 유리기판 식각용 기판지지장치에 관한 것이다. 
     즉, 유리기판이 수직으로 설치되도록 하단부를 협지상태로 받쳐주고 상부는 캐리어 등에 장착이 되는 고정후레임과, 상기 고정후레임에 설치되어 유리기판의 상단과 양측단부를 협지상태로 지지하되 유리기판이 식각되어 면취되는 상태에 따라 슬라이드 되어 긴밀한 협지작용을 하는 거치대로 이루어진 디스플레이 유리기판 식각용 기판지지장치를 특징으로 한다. 
       
     유리기판, 식각, 거치대, 면취, 협지
Patent KR-20080051061-A (KR)
Title: Super-resolution material and high density optical information storage medium using same
Inventor: CHEONG BYUNG KI
IPC: G11B7/24
Filed: 2007-11-29
Abstract: A super-resolution material and a high density optical information storage medium using the same are provided to include at least one selected from a group consisting of a semiconductor material, nitrogen, oxygen, carbon, and boron. A super-resolution material for playing and recording optical information includes more than one selected from a group consisting of a semiconductor material by which light is absorbed in a wavelength range of incident light so that light transmission is increased according to heat, nitrogen, oxygen, carbon, and boron.
Patent KR-20090058603-A (KR)
Title: Ｅｂｓｄ 분석을 위한 침탄강 시편의 전해 연마 방법
Inventor: LEE SEUNG HYUN
IPC: C25F3/06
Filed: 2007-12-05
Abstract: 본 발명은 EBSD 측정을 위한 침탄강 시편의 전해 연마 방법에 관한 것으로서, 침탄강 시편의 표면부를 전해 연마하기 위한 전해액으로 연마성이 우수한 메탄올, 프로판올, 아세트산을 추가하여 조성하고, 최적의 전해 연마 온도 및 시간을 설정하여 제시함으로써, 종래에 비해 더욱 깨끗하고 우수한 표면 품질을 얻을 수 있는 침탄강 시편의 전해 연마 방법에 관한 것이다. 이러한 본 발명의 전해 연마 방법에 의하면, 침탄강에 대해 종래의 전해액 사용시 불가능하였던 깨끗하고 변형이 없는 표면 품질을 얻을 수 있게 되며, 이에 보다 정확한 EBSD 측정 결과를 얻을 수 있게 된다.   
     
     변속기, 침탄강, 전해 연마, EBSD
Patent KR-20090061441-A (KR)
Inventor: KIM YOUNG SAM
IPC: G06F3/02
Filed: 2007-12-11
Abstract: 본 발명은 최신 노트북 컴퓨터가 이동성과 더불어 데스크탑 컴퓨터에 견줄만한 고성능의 제품이 많이 나옴에 따라 주 사용자였던 비즈니스맨 뿐만 아니라 학생이나, 일반인들에게도 많이 보급되어 있는 상황에서 기존의 노트북 키보드를 사용함에 있어서의 불편함을 해결하기 위해 유.무선 방식의 분리형 키보드를 발명 함으로서 사용자가 사용목적과 편의에 따라 보다 편리하게 다양한 환경에서 사용할 수 있게 합니다.  
     특징은 다음과 같습니다. 본체 일체형 키보드가 아닌 유?무선 분리형 키보드가 되겠으며 유선으로 연결하여 확장하여 사용시에는 확장거리에 제한을 두나 베터리 걱정을 하지 않고 사용할 수 있으며 무선으로 사용시에는 보단 먼 거리까지 키보드를 분리하여 사용할 수 있습니다.  
       
     노트북 키보드, 키보드, 분리, 유무선
Patent KR-20090063919-A (KR)
Title: Device for opening and closing automatic for fule filler and control method same
Inventor: MIN YOUNG KI
IPC: B60K15/05
Filed: 2007-12-14
Abstract: An automatic fuel inlet opening/closing device and a method of controlling the device are provided to feed fuel to a vehicle without pushing a fuel inlet open switch and feed only corresponding fuel to a diesel or gasoline vehicle. An automatic fuel inlet opening/closing device includes an evaporated gas sensor(100), an opening/closing means(300) and a controller. The evaporated gas sensor senses evaporated gas emitted from a fuel inlet gun. The opening/closing means opens a fuel inlet(200) when the evaporated gas sensor senses corresponding fuel. The controller controls the opening/closing means.
Patent KR-20090064913-A (KR)
Title: Electronical expansion valve making low noise
Inventor: YUN SO NAM
IPC: F25B41/00
Filed: 2007-12-17
Abstract: A low-noise expansion valve is provided to continuously flow a high-pressure refrigerant in an inlet line, a valve room and an outlet line according to tilted faces respectively formed at a valve room and a poppet valve head to prevent noise due to cavitation caused by sudden change of flow line. A low-noise expansion valve(1) includes a can(10), a valve body(20), a positioner body(30), a poppet valve(40), a bellows(50) and an O-ring(60). The can includes a ring-shaped protrusion for reducing noise and vibration generated therein. The valve body is combined with the lower part of the can. The valve body includes an O-ring for sealing up a valve room. The O-ring is interposed between an upper body(21) and a lower body(22). The positioner body includes a positioner holder(31), a positioner(32), an inner groove(33) and a protrusion(34). The poppet valve includes a poppet valve rod(41) and a poppet valve head(42). A top end fixing ring(51) of the bellows is fixed to a stepped face formed at the inner side of the top of the lower body.
Patent KR-20090064984-A (KR)
Title: Method for manufacturing a mesh and the mesh produced thereby
Inventor: YUN DONG WHEE
IPC: D06P5/24
Filed: 2007-12-17
Abstract: A manufacturing method of a mesh and the mesh manufactured thereby are provided to form specific color on the surface of the mesh while offering texture similar to the natural leather. A manufacturing method of a mesh in which color powder is thermocompressed comprises the following steps of: coating a resin film on the surface of mesh textile(10) with a roller coating machine; drying and solidifying the mesh textile in which the resin film is coated; and forming a color powder layer(12) by compressing a color powder metalized film(20) on the surface of the mesh textile.
Patent KR-20090065066-A (KR)
Title: Semiconductor package
Inventor: LEE JEON HO
IPC: H01L23/12
Filed: 2007-12-17
Abstract: A semiconductor package is provided to mount a semiconductor chip in a stable state by surrounding the semiconductor chip by using a resin material. A terminal is arranged on a mount region which is formed on an upper surface of a substrate(120). A semiconductor chip is loaded on the substrate through solder balls(112). The solder balls are loaded on the terminal of the substrate. A plurality of insulating layers(122) and a plurality of internal wiring layers(124) are alternately laminated on the substrate. The insulating layers are made of insulators. Internal circuits are arranged in the internal wiring layers. The terminal is connected with the internal wiring layers through a conductive via. A resin material for filling a gap is formed between the semiconductor chip and the substrate.
Patent KR-20090065224-A (KR)
Title: Composition for fabricating the black layer of pdp electrode and black layer of pdp electrode using the same, pdp device
Inventor: KIM TAE JOONG
IPC: H01B1/24
Filed: 2007-12-17
Abstract: A composition for forming the black layer of a PDP electrode, and a PDP device using the composition are provided to allow the black layer of a PDP electrode to be formed without the coherence and sedimentation of the composition by slit coating method. A composition for forming the black layer of a PDP electrode comprises 1~20 wt% of a black pigment, 1~20 wt% of a glass frit, 5~40 wt% of an organic binder, and the balance of a solvent, wherein the difference between a D90 diameter and a maximum diameter (Dmax) of the black pigment and the glass frit is 0.5 micrometers or less, and the maximum diameter of the black pigment and the glass frit is 3 micrometers or less.
Patent KR-20090066499-A (KR)
Title: Cosmetic composition with anti inflammation effect containing fermented extract of organic tomato, prunus mume sieb.et zucc, unshui citrus, peach and aloe
Inventor: HAN SANG KEUN
IPC: A61Q19/00
Filed: 2007-12-20
Abstract: A cosmetic composition containing fermentation extract of organic tomato, Japanese apricot, Aurantii nobilis Pericarpium, peach, and aloe is provided to have anti inflammatory effect without side effect. A cosmetic composition having anti inflammatory effect contains 0.001-30 volume% of fermentation extract of plant mixture which is fermented with Saccharomyces cerevsiae. The plant mixture comprises 100-300 weight part of tomato, 100-300 weight part of Citrus unshiu, 100-300 weight part of peach, 100-300 weight part of aloe, 100-300 weight part of Prunus mume Sieb. Et Zucc. The fermentation extract is obtained by extracting with water, ethanol, butylenes glycol, or propylene glycol. The cosmetic composition is used in a form of skin lotion, nutrition lotion, nutrition cream, hair tonic, hair conditioner, hair lotion, shampoo, and hair cream.
Patent KR-20090067650-A (KR)
Title: Apparatus and method of h2s removal from blast furnace dry pit slag by urea and amine compounds
Inventor: LEE SI HOON
IPC: C21B3/08
Filed: 2007-12-21
Abstract: An apparatus of H2S removal from blast furnace dry pit slag by urea and amine compounds and a method thereof are provided to increase the removing ratio of H2S via first and second reaction between H2S and urea and amine compounds, thereby increasing the discharging concentration of H2S. An apparatus of H2S removal from blast furnace dry pit slag by urea and amine compounds includes spray nozzles(5) and blowers(7). The spray nozzles are mounted above cooling water nozzles(3) at upper parts(1) of both walls of a dry pit for spraying amine solution to remove H2S secondarily. The blowers are mounted at an upper part of the spray nozzles. Before the secondary removal, H2S is primarily removed by urea in a slag treating yard(2), wherein urea is added to cooling water sprayed to the slag injected into the yard.
Patent KR-20090067921-A (KR)
Title: Semiconductor device and method for manufacturing the same
Inventor: KIM JAE BUM
IPC: H01L21/28
Filed: 2007-12-21
Abstract: A semiconductor device and a manufacturing method thereof are provided to prevent CD(critical dimension) failure occurring in forming metal wiring contact by maximizing a CD of bit line pads. Bit line contacts(315) are formed at a semiconductor substrate. A bit line material layer is formed on the semiconductor layer. Bit lines and bit line pads(325) are formed by etching the bit line material layer. The bit lines and the bit line pads are connected to the bit line contacts. The CD of the bit lines is formed to be the same as that of the bit line contacts. The bit line pads are formed to be located between the neighboring bit lines.
Patent KR-20090069397-A (KR)
Title: Ugpase1 gene having a pleiotropic effect on chalky endosperm and male-sterility in plant
Inventor: KOH HEE JONG
IPC: C12N15/09
Filed: 2007-12-26
Abstract: A pleiotropic UGPase1 gene which causes chalky endosperm and male-sterility by substituting mono nucleotide in the UGPase1 gene is provided. A plant forms chalky endosperm by mutating a rice-derived UGPase 1 gene which comprises base sequence of the sequence number 1(SEQ ID NO:1). The amylase content, gel consistency or magnesium/potassium ratio of chalky endosperm is reduced comparing a normal endosperm. The protein content, lipid content, magnesium and calcium content or fatty acid total content is increased comparing the normal endosperm. The starch structure of chalky endosperm has more straight chain amylase and an amylopectin having more branches. The UGPase1 gene has pleiotropic property and causes chalky endosperm and male-sterility.
Patent KR-20080061305-A (KR)
Title: Control circuit for light emitting element and vehicular lamp
Inventor: ITO MASAYASU
IPC: H01L33/00
Filed: 2007-12-26
Abstract: A control circuit for a light emitting element and a vehicular lamp are provided to prevent deterioration of a lifetime of an internal component and to stabilize operation of the control circuit by controlling a temperature of the light emitting element. A power conversion unit(10) receives input power and generates a predetermined output current through power conversion of the input power according to a control signal. A current detection unit(20) detects the output current of the power conversion unit. A temperature detection unit(30) detects a temperature inside a case receiving a control circuit(2) for a light emitting element(3). A regulation unit(40) detects whether a temperature of the light emitting element reaches a first predetermined temperature and generates a regulation signal for reducing the predetermined output current not to exceed the first predetermined temperature when the temperature of the light emitting element reaches the first predetermined temperature. A control unit(50) generates the control signal for controlling the predetermined output current according to the regulation signal of the regulation unit.
Patent KR-20070032010-A (KR)
IPC: F16L25/02
Filed: 2005-07-04
Abstract: 본 발명은 투콤포넌트 사출 성형 부품으로서 형성된 2개의 하우징 섹션들로 만들어진 접속 피스(1)에 관한 것이다.     제 1 하우징 섹션(32)은 경질(hard) 열가소성 재료로 만들어지며 제 2 하우징 섹션(34)은 연성의 엘라스토머 플라스틱으로 만들어진다.     제 2 하우징 섹션(34)은 접속 피스(1)에서의 입구 개구부(5)에 대해 정렬되며, 상기 입구 개구부를 통해 파형관의 일 단부가 접속 피스(1) 내로 삽입된다.     제 2 하우징 섹션(34)은 그 안쪽에 밀봉 요소(38)들을 구비하며, 이 밀봉 요소들은 파형관을 밀봉한다.     제 1 하우징 섹션(32)에는 리테이너 요소(22)들과 함께 탄력 있는 케이싱 세그먼트(20)들이 배치되며, 상기 리테이너 요소(22)들은 파형관의 케이싱과 맞물린다.
Patent KR-20070034625-A (KR)
IPC: C12N1/21
Filed: 2003-07-25
Abstract: 본 발명은 복잡한 합성방법을 경유하지 않고 간편하면서 또한 고수율로 저렴하게 펩타이드를 제조할 수 있는 신규 효소에 관한 것이다.  보다 상세하게는 카복시 성분과 아민 성분으로부터 펩타이드 합성반응을 촉매하는 신규 효소, 이러한 효소를 생산하는 미생물 및 이러한 효소 또는 미생물을 사용하는 저렴한 디펩타이드의 제조방법을 제공하는 것이다.  신규하게 밝혀낸 엠페도박터( Empedobacter )속에 속하는 세균으로부터 펩타이드를 효율적으로 합성하는 신규 효소를 밝혀내고, 저렴하면서 간편하게 디펩타이드를 제조하는 방법을 밝혀냈다.    
       
     펩타이드 합성반응, 엠페도박터 브레비스, 펩타이드 생성효소
Patent KR-20070065869-A (KR)
Title: Salivary transcriptome diagnostics
Inventor: WONG DAVID
IPC: C12Q1/68
Filed: 2005-07-15
Abstract: The present invention concerns probes and methods useful in diagnosing, identifying and monitoring the progression of disease states through measurements of gene products in saliva.
Patent KR-20070061548-A (KR)
Title: Method for producing trimethylsilyl azide
Inventor: KOFUKUDA TORU
IPC: C07F7/10
Filed: 2005-03-25
Abstract: A method for producing trimethylsilyl azide represented by the formula (3), characterized in that it comprises reacting trimethylsilyl chloride represented by the formula (1) with an inorganic salt of hydrogen azide represented by the formula (2) in the presence of a phase-transfer catalyst and an organic solvent having a high boiling point. The above method is a novel method for producing trimethylsilyl azide which is suitable for commercial practice. (CH3)3SiCl (1) M(N3)n (2) [wherein M represents an alkali metal or an alkaline earth metal, and n is 1 or 2] (CH3)3SiN3 (3)
Patent KR-20070053788-A (KR)
Title: Process for preparing dlaryl alkylphosphonates and oligomeric/polymeric derivatives thereof
Inventor: PIOTROWSKI ANDREW M
IPC: C07F9/30
Filed: 2005-08-29
Abstract: A process is provided for the production of diaryl alkyl phosphonate by the reaction of triaryl phosphate with dialkyl alkyl phosphonate in the presence of alkali metal iodide catalyst; and, optionally, the diaryl alkyl phosphonate is reacted in situ with aromatic diol and, optionally, with at least one branching monomer, in the absence of other or further added catalyst to provide oligomeric and/or polymeric phosphonate products.
Patent KR-20070085261-A (KR)
Title: Surfactant compounds
Inventor: BEVINAKATTI HANAMANTHSA SHANKA
IPC: C09K23/36
Filed: 2005-10-18
Abstract: Fatty esters of oligoesters of a dicarboxylic acid and a polyol retaining at least one free hydroxyl group, particularly of the formula (I): R1-[OR2O-C (O)-R3-(O)C-]m-R4 (I), where R1 is H, a monocarboxylic acid group, or R6O-[C(O)-R3-(O)C]-; R2s are residues of polyols having at least one substituent free hydroxyl; R 3s are hydrocarbylene; R4 is-OH,-OM where M is a salt forming metal, amine or ammonium,-OR6, or-OR2O-R7; R5 is C7 to C21 hydrocarbyl; R6 is C8 to C22 hydrocarbyl; R7 is H, or-C(O)R5; and m is 1 to 20; provided that at least one of R1 and R4 is or includes a C8 to C22 group, are surfactants. A range of surfactant properties can be obtained by varying the molecules within these ranges. Especially where R2 is derived from a higher polyol e.g. sorbitol, R3 is C2 to C6, and the fatty terminal group is C8 to C14, the products can be highly water soluble and effective oil in water emulsifiers.