Silicone polyetherimide

Poly(dimethylsiloxane-co-oxyethylene-co-oxypropylene) is used as a surfactant, dispersant, and wetting agent, while poly[bisphenol A bis(oxyranylmethyl) ether]-co-poly(dimethylsiloxane) is used as an epoxy resin. More complicated silicone copolymers also were synthesized such as the silicone polyetherimide shown below ... 

Jia and coworkers prepared thin-film composite zeolite-filled silicone rubber membranes by a dip-coating method [82]. The membranes have a thin silicalite-1/ silicone rubber mixed-matrix selective layer on top of a porous polyetherimide support. 

Polyetherimide A wide variety of commercially available adhesives can be used in bonding polyetherimide to itself or to dissimilar materials. Among these are polyurethane [(cure at RT to 302°F (150°C)], RTV silicones, hot melts (polyamide types) curing at 401 C (205°C) and epoxies (non-amine type, two-part) (12). 

This copolymer can be obtained from a polydimethylsiloxane that has aminoalkyl end groups in a reaction with the polyetherimide formed from the reaction of a bis(ether anhydride) with diaminobenzene. The material is fire resistant and is used in cable insulations. Among other more complex copolymers with practical applications are poly[2,2-propanebis(4-phenyl)-carbonate]-b/ock-poly(dimethylsiloxane)] and a silicone phenol formaldehyde copolymer obtained in two steps, the first being the heating of a polydimethylsiloxane that has reactive end groups with glycerol, and the second step being the reaction with a phenol formaldehyde resin. 

TABLE 8.1. Conditions for MNP Synthesis by ion impiantation into Poiyvinyiidene Fiuoride (PVF2), Polyimide (PI), Polymethyl-methacryiate (PMMA), Poiymethyimethacryiate with Phosphorus-Containing Fragments (PMMA -1- PF), Polyethylene (PE), Poly(ethyleneterephthalate) (PET), Silicone Polymer (Phenylmethyl-silane Resin with Tin Diethyidicaprilate), Epoxy Polycarbonate (PC), and Polyetherimide (PEI) ... 

Polyarylate resin Polyarylether ketone resin Polyester carbonate resin Polyetherimide resin Polyethylene, chlorinated Polyethylene glycol Polyethylene, medium density Poly (p-methylstyrene) Poly (p-methylstyrene), rubber-modified Poly (oxy-1,2-ethanediyloxycarbonyl-2,6-naphthalenediylcarbonyl) resin Poly (oxy-p-phenylenesulfonyl-p-phenyleneoxy-p-phenyleneisopropylidene-p-phenylene) resin Poly (phenyleneterephthalamide) resin Polysulfone resin Poly (tetramethylene terephthalate) Polyvinylidene chloride Potassium sorbate Potato (Solanum tuberosum) starch Silica, colloidal Silicone Sodium N-alkylbenzenesulfonate Sodium bicarbonate Sodium tetraborate pentahydrate Starch, pregelatinized Styrene/acrylates copolymer Styrene/butadiene polymer Styrene/DVB copolymer , 1,1 -Sulfonylbis (4-chlorobenzene) polymer with 4,4 -(1-methylethylidene) bis (phenol) and 4,4 -sulfonylbis (phenol) Synthetic wax Tapioca starch Tetrafluoroethylene/perfluoro (propyl vinyl ether) copolymer Tocopherol Triglycidyl isocyanurate VA/crotonates copolymer Vinyl chloride/ethylene copolymer Wheat (Triticum vulgare) starch... 

Polyethylene, silicone, PVC, thermoplastic elastomer, polyurethane, ethylene vinyl acetate Epoxy, nylon (glass or carbon fiber), polyurethane, thermoplastic polyester (glass), polyphthalamide, polyetheretherketone, polycarbonate (carbon fiber), polyetherimide, polyether-sulfone Nylon (glass or carbon fiber), polyurethane, thermoplastic polyester (glass), polyetheretherketone, polyetherimide, polyphthalamide, polyphenylene sulfide (glass or carbon fiber)... 

Polyetherimide molding compounds are commercially available in extmsion and injection molding grades. The major suppliers of this material include GE Plastics (JJltem), Compound Technologies, DSM Engineering, LNP, and RTF A polyether-imide-polycarbonate alloy and a polyetherimide-silicone alloy are also available from GE Plastics. 

PEI blends have also been further modified with silicone polyether-imide copolymer to improve impact strength, especially at lower temperatures. Use of a sihcone polyetherimide as an impact modifier has the added benefit of retaining or even improving flame retardance, as it has a lower fuel value than traditional rubbery impact modifiers. The sili-cone-PEI copolymer also has the stabihty needed to survive high PEI processing temperatures without decomposition. These PEI-sdicone copolymer blends are hazy or opaque, phase-separated systems. 

Some specific recent applications of the chromatography-mass spectrometry technique to various types of polymers include the following PE [130, 131], poly(l-octene), poly(l-decene), poly(l-dodecene) and 1-octene-l-decene-l-dodecene terpolymer [132], chlorinated polyethylene [133], polyolefins [134,135], acrylic acid, methacrylic acid copolymers [136, 137], polyacrylate [138], styrene-butadiene and other rubbers [139-141], nitrile rubber [142], natural rubbers [143,144], chlorinated natural rubber [145,146], polychloroprene [147], PVC [148-150], silicones [151,152], polycarbonates (PC) [153], styrene-isoprene copolymers [154], substituted PS [155], polypropylene carbonate [156], ethylene-vinyl acetate copolymer [157], Nylon 6,6 [158], polyisopropenyl cyclohexane-a-methylstyrene copolymers [195], cresol-novolac epoxy resins [160], polymeric flame retardants [161], poly(4-N-alkylstyrenes) [162], pol)winyl pyrrolidone [31,163], vinyl pyrrolidone-methacryloxysilicone copolymers [164], polybutylcyanoacrylate [165], polysulfide copolymers [1669], poly(diethyl-2-methacryloxy) ethyl phosphate [167, 168], ethane-carbon monoxide copolymers [169], polyetherimide [170], and bisphenol-A [171]. 

RBS has also been used to characterize palladium and tin catalysts on polyetherimide surfaces [229], titanium nitride thin films [230], silicon oxynitride films [231], and silicon nitride films [232]. and to study the laser mixing of Cu-Au -Cu and Cu - W - Cu thin alloy films on Si3N4 substrates [233], and the annealing behavior of GaAs after implantation with selenium [234]. 

With regard to ultraviolet (UV) radiation, several polymers, reinforced or unreinforced, have excellent resistance to it. This inclndes polyether ether ketone, diallyl isophthalate, polyetherimide, vinylacetate, silicones, and several fluorinated polymers, such as polyvinyl fluoride, polyvinylidene fluoride, perfluoroalkoxy ethylene, ethylene-chlorotrifluoroethylene, and flnorinated ethylene-propylene copolymer (Table 11.2). 

The GE Advanced Materials operation includes high-performance engineered plastics, structured products silicones and high-purity quartzware. The company s range of engineering resins includes Cycolac ABS, Cycoloy PC/ABS blend, Geloy, Lexan PC, Noryl, high temperature Ultem polyetherimide, Valox PBT, Xenoy and Xylex polymer blends. 

In fact all these properties were unavailable in conventional materials but may be covered by aromatic and heterocyclic Unear and thermosetting resins such as acetylene terminated resins, bismaleimides, polyetherimides, polyamide-imides, polybenzimidazoles, pol3dmides, polyetherketones, pol3qjhenylquinoxalines, polyphenylensulfides, polysulfones derivatives, polyst5nylp3nidines, fluoropol3mers, silicones, etc. 

Udel Polysulfone, BP Amoco Ultem Polyetherimide resin, sheet, GE Ultra Black RTV silicone, Loctite Ultradur B PBT thermoplastic polyester, BASF... 

Lee LL, Tsai DS (2001) Synthesis and permeation properties of silicon-carbon-based inorganic membrane for gas separation. Ind Eng Chem Res 40 (2) 612-616 Sedigh MG, Xu L, Tsotsis TT, Sahimi M (1999) Transport and morphological characteristics of polyetherimide-based carbon molecular sieve membranes. Ind Eng Chem Res 38 (9) 3367-3380... 

---