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Assignee: Rhone-Poulenc Viscosuisse SA


Location: Emmenbrucke, CH
No. of patents: 22

NumberTitleIssue Date
5817417Method for continuous production of polyester weft yarn for tire cord fabric and weft yarn made by same
The method for continuous production of a multifilament stretchable weft yarn for tire cord fabric includes swirling polyester-POY-filaments with an initial titre of from 170 to 260 dtex by means of a gas having a pressure of from 0.5 to 3 bar in a swirli...
10/06/1998
5768875Filter fabric with core sheating thread, and a bag produced therefrom
The invention concerns a filter fabric consisting of a core yarn having a reversible elongation of at least 20 to 50%, the fabric being intended for use in the manufacture of airbags for vehicles. The yarn consists of a thermally stable thermoplastic core...
06/23/1998
5759685Soil-repellent and abrasion-resistant monofilaments and methods of making and using same
The process of making the soil-repellent and abrasion-resistant monofilament includes transesterifying dimethylterephthalate with ethylene glycol; adding to the resulting reaction mixture from 0.15 to 5 percent by weight of a polydialkylsiloxane of formul...
06/02/1998
5707733Nylon -6,6 monofilaments for precision wovens
The invention concerns a polyamide-66-monofilament with improved initial modulus and with a titre of dtex 4 fl-150 fl. The strength of the monofilaments is at least 60 cN/tex for an extension of less than 25% and the specific LASE, in relation to the init...
01/13/1998
5698660Melt spinnable copolyamines with improved modulus of elasticity, filaments produced from them and use of such filaments
A copolyamide with an improved modulus of elasticity for the melt-spinning of filaments consists of at least 75 wt. % of a linear polyamide base polymer with a melting point of 150°-320° C. and at least 0.5 wt. % of a block comonomer which is incorporat...
12/16/1997
5693275Method of making an improved pre-adherized polyester filament yarn
The method of making a pre-adherized polyester filament yarn with adhesion properties for rubber includes applying a pre-adherizing agent to a polyester filament yarn having a boiling water shrinkage value of
12/02/1997
5579629Method of producing a friction texturized polyester filament yarn and yarn made thereby
The friction texturized polyester filament yarn has a titer of 400 to 600 dtex and a crimpability of at least 45% and can be provided with at least 60 slubs/m. The method of making this friction texturized polyester filament yarn comprises texturizing a f...
12/03/1996
5547755Pre-adherized polyester filament yarn for tire cord
The method of making a pre-adherized polyester filament yarn with adhesion properties for rubber includes applying a pre-adherizing agent to a polyester filament yarn having a boiling water shrinkage value of
08/20/1996
5514472Soil-repellent monofilament for paper machine wire-cloths, production thereof and use thereof
The dirt-repellent monofilament with a toughness of at least 36 cN/tex and an extension of under 44% has a soiling index A1>2 after five soiling and cleaning cycles. To manufacture the dirt-repellent monofilaments, a copolymer with a melting point of 255Â...
05/07/1996
5472780Soil-repellent monofilament for paper machine wire-cloths, production thereof and use thereof
The soil-repellent monofilament for paper machine wire-cloths consists of at least 85% by weight of polyethylene terephthalate having a viscosity index (V.I.) of at least 96 dl/g and an added copolymer prepared from alkenes and perfluoroalkenes having a m...
12/05/1995
5417908Process for the preparation of polyester, a polyester and its use
Process for making a polyester having polyethylene terephthalate units including transesterifying a terephthalic acid ester with a glycol using a manganese salt as catalyst and then subjecting the product to a polycondensation reaction using a germanium-c...
05/23/1995
5350632Impregnated, dimension-stable polyester cord
The dimension-stable impregnated polyester tire cord is at least 95% by weight polyethylene terephthalate and has an intrinsic viscosity of 0.70 dl/g to 0.89 dl/g for undrawn cord, a fineness of at least 1100 x 2 dtex, a dimension stability coefficient of...
09/27/1994
5322921Polyester yarn
The method for producing dimensionally stable, low-shrinkage, chemically modified industrial polyester yarns by melt spinning at speeds of 1000 to 4000 m/min. utilizes a copolymer containing at least 85 percent by weight polyethylene terephthalate units a...
06/21/1994
5319865Apparatus for draining of yarn bobbins
The apparatus for draining dyed yarn on yarn bobbins includes a vacuum pump; a hollow dye carrier insert for carrying a plurality of yarn bobbins having yarn to be drained thereon, an interior volume of this dye carrier insert being connectable to the vac...
06/14/1994
5313776Process for manufacturing an elastic bulk yarn
A friction-textured elastic yarn is prepared by twisting a single-component multifilament melt-spinnable polymer yarn having an initial modulus of 80 to 150 cN/tex and a melting point of at least 200° C. at a speed of at least 200 m/min, the thus twisted...
05/24/1994
5297323Device and process for automatically joining threads
A device for joining a large number of threads on a single frame. Each of a plurality of thread clamps has a guide tube communicating with a vacuum duct. A carriage for carrying a thread joining system is arranged on the frame. As the carriage moves along...
03/29/1994
5266254Process for the high-speed spinning of monofilaments
A process of high-speed spinning of a set of thermoplastic monofilaments having a linear density from 1 to 30 dtex, includes spinning to obtain melt-spun thermoplastic monofilaments and airblast cooling of the melt-spun monofilaments. To produce a particu...
11/30/1993
5264282Polyamide filament, process for producing it and its use
The process for making a polyamide filament having thermal and mechanical properties close to those of nylon 66 but without spherulites includes concentrating an aqueous solution of adipic acid-hexamethylenediamine salt containing from 1 to 10% by weight ...
11/23/1993
5182457Device for photo-electrically monitoring a moving yarn using two sensor heads
A device to monitor a moving yarn for irregularities is described. A first sensor head (2) with a recess (6) and a second sensor head (3) with a recess (7) are arranged in the direction of yarn movement. The cross-sectional depth of the recess (7) in seco...
01/26/1993
5139725Process for manufacture of crimped polyester yarn from cold drawn polyester-POY yarn
A process for the manufacture of a crimped polyester yarn obtained from a polyester partially-oriented yarn comprising fabricating a partially-oriented polyester yarn by a high-speed process, cooling the partially-oriented polyester yarn, cold drawing the...
08/18/1992
5106685Process for manufacturing a smooth polyester yarn and yarn so obtained
In a process for manufacturing a smooth, dimensionally stable, shrink-resistant polyester filament yarn, the starting product is a polyester POY. The polyester POY (5a) is cold-stretched (5b) in a stretching ratio of 1.8 to 2.5 and then relaxed with an ad...
04/21/1992
5045260Polyester yarn and method for its manufacture
The method for producing dimensionally stable, low-shrinkage, chemically modified industrial polyester yarns by melt spinning at speeds of 1000 to 4000 m/min. utilizes a copolymer containing at least 85 percent by weight polyethylene terephthalate units a...
09/03/1991
 
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