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Topic: Polyimide

In the News (Thu 17 Dec 09)

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	Process for the preparation of polyimide foam - Patent 5298531
		A polyimide foam is prepared by heating a mixture comprising an alkyl ester of 4,4'-oxydiphthalic acid and a diamine at a temperature of 60.degree.
		A process for the preparation of a polyimide foam, characterized by heating a polyimide precursor comprising an alkyl ester of 4,4'-oxydiphthalic acid and a diamine as the main components at a temperature of 60.degree.
		By this heating, the polyimide precursor is condensed and the alcohol and water generated by the condensation and the vapor of the lower alkyl alcohol present in the precursor each act as a blowing agent.
	www.freepatentsonline.com /5298531.html (1690 words)

	Acetylene-terminated polyimide compositions - Patent 4187359
		A preferred composition is one consisting essentially of the acetylene-terminated polyimide oligomer and about 1 to 20 weight percent of the additive, i.e., trinitriloacetonitrile, based upon the weight of the polyimide oligomer.
		The composition of this invention is prepared by blending the polyimide oligomer and the additive, both of which are in solid form, so as to provide an intimate mixture of the materials.
		The polyimide oligomers according to the foregoing formula are prepared as described in U.S. Pat.
	www.freepatentsonline.com /4187359.html (1877 words)

	Atomic layer deposition of polyimide thin films
		Polyimide thin films are attractive materials due to their resistance towards high temperatures, mechanical stress and various chemicals.
		We have demonstrated surface-controlled ALD-type growth of several polyimide thin films at 160 °C. Surface reactions between these precursors produce water that can be easily removed under reduced pressure during the ALD cycling.
		Based on the success of the present work, the properties of polyimide thin films can be tailored, since there is wide selection of different functional diamines and dianhydrides.
	www.rsc.org /Publishing/Journals/jm/News/HotPutkonen.asp (481 words)

	Harsh environment bar code, polyimide labels, kapton® labels, printed circuit board labels, circuit board label, ...
		Polyimide and Kapton®; Label materials for printed circuit board labeling.
		Polyimide labels and Kapton®; labels for high-resolution printing: 600 dpi, PDF 417, 2D codes
		Polyimide label materials for Lead Free electronics manufacturing.
	www.polyonics.com (282 words)

	FURUKAWA POLYIMIDE TUBING: Advantages
		Polyimide tubing has the superior space factor compared to FEP for 3 times.
		FEP is unlikely to be glued, polyimide is compatible with most types of glue.
		Polyimide resin is outstanding in adhesion and remains unaffected in chemicals (except alkalis) or radiation.
	www.furukawa.co.jp /poly/english/tokutyo.htm (379 words)

	Polyimide Bake and Cure, non-photosensitive and photosensitive
		Polyimides are typically applied in liquid form, then thermally cured into a film or layer with the desired properties.
		Polyimide layers also help to avoid problems, in case that the assembly is done in a different factory than the IC-production.
		However photosensitive polyimide, especially the ester type with the best performance of all polyimides, creates byproducts during the curing process that are very difficult to remove after the deposition.
	www.crystec.com /kllpixe.htm (802 words)

	Combinatorial Methods for the Optimization of the Vapor Deposition Polymerization of Polyimide Monomers
		Polyimides are high performance polymers and exhibit high thermal stability, excellent chemical resistance, and good mechanical properties.
		In addition to the common fabrication of such thin films from solution, vapor deposition of polyimide forming monomers is an alternative promising approach.
		Thus the development of suitable molecules and monomers, the adaptation and modification of new methods and materials are among the challenges encountered to further improve and develop complex multilayer thin film structures with enhanced properties and performance.
	www.rsc.org /Publishing/Journals/jm/News/HotSchmidt.asp (409 words)

	Polyimide-Substrate Effects During Wet Chemical Processing of Polyimide Films in VLSI
		We have examined the effects of molecular weight, chemical composition, and interphase structure on the dissolution behavior of polyimides on silicon substrates.
		The dissolution rate of partly cured polyimides was found to depend strongly on the above parameters, and showed distinct regions of behavior.
		A method was developed to quantify the chemical adhesion during etching of polyimides.
	www.astm.org /DIGITAL_LIBRARY/STP/PAGES/STP36174S.htm (318 words)

	Polyimide Thin Film Nanostructure Orientation and Material Properties
		Therefore, the demand for well-defined and well-characterized oriented polyimides has initiated intensive studies of polyimide thin film preparation methods, as well as characterization approaches of resultant chain structures and their material properties.
		In our study of polyimide thin films, particular attention was focused on characterizing the effects of imidization parameters on material properties and nano-structures of biphthalic dianhydride (BPDA/PPD) polyimide.
		Increasing this temperature enhances chain mobility resulting in a phase transition of the polyimide in which the observed chain morphologies range from quasi-ordered to amorphous.
	www.foresight.org /conferences/MNT9/Abstracts/Lin/index.html (380 words)

	Makromolekulare Chemie I: Publikationen: Combinatorial methods for the optimization of the vapor deposition of ...
		A combinatorial study on the synthesis and in situ orientation of thin films of aromatic polyimides on different aligning surfaces was carried out.
		Monomer and polyimide libraries prepared by using a combinatorial approach consisting of step gradients with different thicknesses, sectors with different compositions, and sectors with or without alignment layers were investigated.
		As aligning surfaces, friction deposited layers of PTFE, rubbed polyimide films, and highly oriented polyimide layers prepared by a shearing technique were used.
	www.uni-bayreuth.de /content/mci/de/pub/pub/pub_detail.php?id_obj=28946 (272 words)

	CiteULike: Flexible polyimide probes with microelectrodes and embedded microfluidic channels for simultaneous drug ...
		This paper reports on the development and characterisation of implantable polyimide microprobes that allow simultaneous, selective chemical delivery/probing and multi-channel recording/stimulation of bioelectric activity.
		The key component of the system is a flexible polyimide substrate with embedded microchannels that is batch-fabricated combining polyimide micromachining and a lamination technique.
		The devices provide platinum microelectrodes on both sides of the polyimide substrate with an active surface between 20 [mu]m x 20 [mu]m and 50 [mu]m x 50 [mu]m.
	www.citeulike.org /user/SynTact/article/507367 (663 words)

	CiteULike: A high-sensitivity polyimide humidity sensor for monitoring hermetic micropackages
		This capacitive sensor is 1 mm on a side, and utilizes CU1512 polyimide film with a thickness in the range of 300-1200 Å sandwiched between 2 metal electrodes to sense moisture.
		The sensor has been exposed to and survived a one-hour test at 400°C, which is the temperature typically used to perform anodic bonding.
		This capacitive sensor is 1 mm on a side, and utilizes CU1512 polyimide film with a thickness in the range of 300-1200 \andAring; sandwiched between 2 metal electrodes to sense moisture.
	www.citeulike.org /user/cite0000/article/816185 (468 words)

	Polyimide Label and other Harsh Environment Label Products
		Harsh environment bar code polyimide, Kapton®;, and circuit board labels can be produced with thermal transfer printers when matched with the appropriate thermal transfer ribbons.
		Polyimide label, Kapton®; label, tedlar label, nomex label, and others for Regulatory and other Compliance applications.
		Harsh environment label Samples, Literature for harsh environment bar code label materials, Catalog of printed circuit board label, polyimide label, pcb label, Kapton®; label, aluminum label, and other harsh environment bar code label materials.
	www.polyonics.com /products.html (149 words)

	Adv. Polymers
		Commercially, perhaps the greatest benefit SRS has realized from its participation in the development of a multi-functional upperstage propulsion system is the licensing and commercial production of the colorless polyimide from which concentrators are made.
		Through the experience gained by using these materials for inflatable solar concentrators, SRS is developing methods to produce this film in continuous rolls for commercial applications such as multi-layer insulation, inflatable structures for space, and other applications where an optically clear film which exhibits superior material properties is desired.
		SRS Technologies is a licensed producer of NASA LaRC CP1 and CP2 polyimide materials.
	www.stg.srs.com /atd/advpolymers.htm (589 words)

	AURUM Thermoplastic Polyimide Resin - Polyimide Resin Manufacturer - Automotive Chemical Resistance Products
		Aurum®, an easy melt, processable and recyclable thermoplastic polyimide resin, provides the necessary properties and performance required for engine and suspension system applications by offering automotive engineers a variety of attractive performance characteristics including excellent chemical resistance, low outgassing, and superior radiation resistance.
		Polyimide resins such as AURUM are noted for their high temperature properties.
		View: AURUM® Thermoplastic Polyimide Injection Molded Thrust Washers Selected by Ford for the 1999 Super Duty F-Series Pickup Torque Converter.
	www.mitsuichemautomotive.com /aurum.htm (422 words)

	MicroLumen
		MicroLumen, Inc. is the International leader in the manufacture of high performance medical tubing.
		Polyimide is a thermoset plastic which provides excellent mechanical, thermal and chemical properties.
		Our tubing is manufactured with tighter tolerances than conventionally extruded plastic tubing.
	rd.business.com /index.asp?epm=s.1&bdcq=polyimide&bdcr=4&bdcu=http://www.microlumen.com/&bdct=20071206115853&bdcp=&partner=2662601&bdcs=nwuuid-2662601-EC2DD4BA-1785-10D7-FBA5-2D86E79BDC94-ym (94 words)

	Polyimide Labels for Harsh Environments
		Polyimide labels usually have a glossy finish, and might be White Polyimide, Tan Polyimide, or other colors.
		Polyimide labels can withstand very harsh environments, including high heat, sunlight, UV, etc. Polyimide labels are durable, waterproof, tearproof, and scratch and heat resistant.
		Applications for Polyimide labels include identification of property, equipment and electronics in extreme heat environments.
	www.ablelabel.com /PolyimideLabels.html (158 words)

	Katco :: Electronic and PCB Tapes, polyimide masking tape, Kapton®, ESD
		K6338F is a high temperature masking tape for use in the wave solder and reflow process.
		This polyimide tape is able to perform at the higher temperatures as required in 'non lead' applications.
		This polyimide tape is coated with an acrylic adhesive and has high bond strength.
	www.katco.uk.com /masking.htm (523 words)

	ASTM C1482-04 Standard Specification for Polyimide Flexible Cellular Thermal and Sound Absorbing Insulation
		1.1 This specification covers the composition and physical properties of lightweight, flexible open-cell polyimide foam insulation intended for use as thermal and sound-absorbing insulation for temperatures from -328°F up to +572°F (-200°C and +300°C) in commercial and industrial environments.
		1.1.1 Annex A1 includes faced polyimide foam as specified by the U.S. Navy for marine applications.
		No single test is adequate for estimating either the minimum or maximum use temperature of polyimide foam under all possible conditions.
	www.astm.org /DATABASE.CART/PAGES/C1482.htm (678 words)

	Polyimide film(#6052) - Tianjin Fortune Int'l Industry & Trade Co., Ltd
		Tianjin Fortune Int'l Industry & Trade Co., LtdHome : Products Product Description: Polyimide film(#6052), Scope: The polyimide film is produced by adopting Biaxial Tension Process with a width larger than 1 meter, its all performance indexes are better than polyimide film produced by Aluminum Foil Process Doctor-balding Process.
		Scope: The polyimide film is produced by adopting "Biaxial Tension Process" with a width larger than 1 meter, its all performance indexes are better than polyimide film produced by "Aluminum Foil Process" "Doctor-balding Process".
		Any forms of using or quotation, part or all should be authorized by copyright holder All Products Online Corporation.
	www.allproducts.com /manufacture98/tjfortune/product2.html (209 words)

	Katco :: Kapton® Polyimide Film, Kapton FN, Kapton HN, Teflon® FEP resin, Cirlex®, adhesiveless laminate
		polyimide film possesses a unique combination of properties.
		polyimide technology has been developed to provide industry with a variety of thick polyimide sheets.
		, an all polyimide, adhesiveless laminate, offers a unique advantage over other laminated constructions using adhesives.
	www.katco.uk.com /kapton.htm (288 words)

	DuPont Kapton® 120FN616 Polyimide/FEP Composite Film
		120 Gauge film structure consisting of a 25 µm (1 mil) base polyimide film with a 2.5 µm (0.1 mil) coating of Teflon® FEP on both sides.
		Kapton® Type HN film coated with Teflon® FEP fluoropolymer resin, imparts heat sealability, provides a moisture barrier, and enhances chemical resistance.
		Kapton® polyimide films can be used in a variety of electrical and electronic uses: wire and cable tapes, formed coil insulation, substrates for printed circuit boards, motor slot liners, magnet wire insulation, transformer and capacitor insulation, magnetic and pressure-sensitive tapes, and tubing.
	www.matweb.com /search/SpecificMaterialText.asp?bassnum=PDUK31 (482 words)

	DuPont Electronics : Kapton® polyimide film
		DuPont has set a high standard in the polyimide film markets with its durability and performance in extreme temperature environments. Kapton®; has a unique combination of electrical, thermal, chemical and mechanical properties and retains these properties over a wide range of industrial environments and applications.
		From miniaturized electronic components to Mars rover heaters, from high speed locomotive motors to airbag seat sensors, DuPont™ Kapton®; polyimide films make innovative design solutions possible.
		Choose from a broad offering of DuPont polyimide film types for your design application needs.
	www2.dupont.com /Kapton/en_US/index.html (210 words)

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