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1. (WO2018077838) POLYPROPYLENE FILM STRUCTURE HAVING INCREASED LIFE TIME
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Pub. No.: WO/2018/077838 International Application No.: PCT/EP2017/077094
Publication Date: 03.05.2018 International Filing Date: 24.10.2017
IPC:
C08J 5/18 (2006.01) ,H01B 3/22 (2006.01) ,H01B 3/44 (2006.01) ,H01G 4/18 (2006.01) ,H01G 4/22 (2006.01) ,B32B 27/32 (2006.01) ,B29C 55/12 (2006.01)
C CHEMISTRY; METALLURGY
08
ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
J
WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H142
5
Manufacture of articles or shaped materials containing macromolecular substances
18
Manufacture of films or sheets
H ELECTRICITY
01
BASIC ELECTRIC ELEMENTS
B
CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
3
Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
18
mainly consisting of organic substances
20
liquids, e.g. oils
22
hydrocarbons
H ELECTRICITY
01
BASIC ELECTRIC ELEMENTS
B
CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
3
Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
18
mainly consisting of organic substances
30
plastics; resins; waxes
44
vinyl resins; acrylic resins
H ELECTRICITY
01
BASIC ELECTRIC ELEMENTS
G
CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
4
Fixed capacitors; Processes of their manufacture
002
Details
018
Dielectrics
06
Solid dielectrics
14
Organic dielectrics
18
of synthetic material, e.g. derivatives of cellulose
H ELECTRICITY
01
BASIC ELECTRIC ELEMENTS
G
CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
4
Fixed capacitors; Processes of their manufacture
002
Details
018
Dielectrics
20
using combinations of dielectrics from more than one of groups H01G4/02-H01G4/06115
22
impregnated
B PERFORMING OPERATIONS; TRANSPORTING
32
LAYERED PRODUCTS
B
LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
27
Layered products essentially comprising synthetic resin
32
comprising polyolefins
B PERFORMING OPERATIONS; TRANSPORTING
29
WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
C
SHAPING OR JOINING OF PLASTICS; SHAPING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL; AFTER- TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
55
Shaping by stretching, e.g. drawing through a die; Apparatus therefor
02
of plates or sheets
10
multiaxial
12
biaxial
Applicants:
BOREALIS AG [AT/AT]; IZD Tower Wagramer Str. 17-19 1220 Vienna, AT
Inventors:
JACOBS, Franciscus; BE
BOELAERS, Guido; BE
GLOGER, Dietrich; AT
RINNERTHALER, Helmut; AT
Agent:
MAIWALD PATENTANWALTS- UND RECHTSANWALTSGESELLSCHAFT MBH; Elisenhof Elisenstr. 3 80335 München, DE
Priority Data:
16196111.527.10.2016EP
Title (EN) POLYPROPYLENE FILM STRUCTURE HAVING INCREASED LIFE TIME
(FR) STRUCTURE EN POLYPROPYLÈNE FORMANT FILM PRÉSENTANT UNE DURÉE DE VIE ACCRUE
Abstract:
(EN) The present invention refers to a structure comprising a biaxially oriented polypropylene (BOPP) film having at least one layer comprising a homopolymer of propylene which layer is in contact with an oil phase, the homopolymer of propylene has a) a content of isotactic pentads in the range from 95 % to 98 %, and b) a content of ash of not more than 30 ppm, based on the total weight of the homopolymer of propylene, characterized in that the oil phase has an absorbance value of ≤ 0.1, relative to the pure oil, as determined spectrophotometrically at a wavelength of 860 nm by the reduction of transmitted light intensity. The present invention further refers to the use of a biaxially oriented polypropylene (BOPP) film for making capacitors comprising said structure, wherein the oil phase has an absorbance value of ≤ 0.1, relative to the pure oil, as determined spectrophotometrically at a wavelength of 860 nm by the reduction of transmitted light intensity as well as the use of the homopolymer of propylene for increasing the life time of a capacitor.
(FR) La présente invention concerne une structure comprenant un film en polypropylène à orientation biaxiale (BOPP) ayant au moins une couche comprenant un homopolymère de propylène, laquelle couche se trouve en contact avec une phase huileuse. L'homopolymère de propylène présente a) une teneur en pentades isotactiques dans la plage de 95 % à 98 %, et b) une teneur en cendres non supérieure à 30 ppm, sur la base du poids total de l'homopolymère de propylène, caractérisée en ce que la phase huileuse présente une valeur d'absorbance ≤ 0,1, par rapport à l'huile pure, telle que déterminée par spectrophotométrie sous une longueur d'onde de 860 nm par la réduction de l'intensité de la lumière transmise. La présente invention concerne en outre l'utilisation d'un film en polypropylène à orientation biaxiale (BOPP) destiné à fabriquer des condensateurs comprenant ladite structure, la phase huileuse présentant une valeur d'absorbance ≤ 0,1, par rapport à l'huile pure, telle que déterminée par spectrophotométrie sous une longueur d'onde de 860 nm par la réduction de l'intensité de la lumière transmise ainsi que l'utilisation de l'homopolymère de propylène afin d'accroître la durée de vie d'un condensateur.
Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DJ, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JO, JP, KE, KG, KH, KN, KP, KR, KW, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW
African Regional Intellectual Property Organization (ARIPO) (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Office (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (EPO) (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG)
Publication Language: English (EN)
Filing Language: English (EN)