EPM rubbers

Peroxide crosslinking of the copolymer is more efficient than that of the homopolymer (Table 9-1). The process becomes a chain reaction (but with short kinetic chain length) involving polymerization of the pendant vinyl groups on the polysiloxane chains in combination with coupling of polymeric radicals. The crosslinking of EPDM rubbers is similarly more efficient when compared to EPM rubbers since the former contain double bonds in the polymer chain. [Pg.743]

Table 1 Inhibitory effect of various additives (metal salts) on the radiation grafting of NVP, HEMA and Am onto EPM rubber ...

The EPM rubbers, being completely saturated, require organic peroxides or radiation for vulcanization. The EPDM terpolymers can be vulcanized with peroxides, radiation, or sulfur. [Pg.33]

Propylene content in EPM rubber can be determined with the help of IR spectra. A propylene band near 1155 cm 1 has been widely used [79] for EPM analysis, frequently in combination with the polyethylene band at 721 cm"1. Tacticity is important in EPM rubber, and the bands at 1229 and 1252 cm"1 are characteristic of syndiotactic and isotactic structures, respectively, (both bands are present in atactic polypropylene as well). Polymer structure may vary in the relative tactic placement of adjacent head to tail propylene units and in the sequence distribution of base units along the chain. Some of them can be identified [80] by infrared spectra, such as isolated or head to tail propylene units ... [Pg.90]

When ethylene is copolymerized with substantial amounts (>25%) of propylene an elastomeric copolymer is produced, commonly known as ethylene-propylene rubber (EPR) or ethylene-propylene monomer (EPM) rubber. When a diene, such as dicyclopentadiene, is also included, a terpolymer known as ethylene-propylene-diene monomer (EPDM) rubber is obtained. EPR and EPDM are produced with single site and Ziegler-Natta catalysts and are important in the automotive and construction industries. However, EPR and EPDM are produced in much smaller quantities relative to polyethylene. Elastomers display vastly different properties than other versions of industrial polyethylene and are considered outside the purview of this text. EPR and EPDM will not be discussed further. [Pg.6]

Epcar EPM. [BFGoodtich/Spec. Polymers] EPM rubber fm molded and extruded prods., wire insulation and jacketing, mold o-rings, bidce components, sidewalls, hose, matting, automotive weatherstripping. [Pg.132]

Polysar. [Polysar] Isobuq lene/isoprene copolymers, ETOM, or EPM rubbers rubber for use in tire inner liners, pharmaceutical closures, medianical goods, gaskets, seals, hose, premies, insulation, chewing gum base, tank linings, sponge adhesives, set ts. [Pg.290]

More homogeneous copolymer cpmpositions are obtained with soluble Zieg-ler-Natta catalysts, especially where monomer compositions are maintained relatively constant during polymerization. Commercially important ethylene-propylene binary copolymers (EPM rubbers) and ethylene-propylene-diene ternary copolymers (EPDM rubbers) are made by this process. [Pg.576]

Because of their saturated structure, EPM rubbers cannot be vulcanized by using accelerated sulfur systems, and the less convenient vulcanization with free-radical generators (peroxide) is required. In contrast, EPDM rubbers are produced by polymerizing ethylene and propylene with a small amount (3-8%) of a diene monomer, which provides a cross-bnk site for accelerated vulcanization with sulfur. [Pg.414]

In this paper we report on the preparation of a functionalized ethylene-propylene random copolymer (EPM) and on the synthesis of EPM-g-PA 6 graft copolymers utilizing the functionalized EPM. Preliminary results on the use of modified EPM rubbers in PA 6/EPM blends have been previously reported . [Pg.193]

Epoxystearic acid-2-ethylhexyl ester. See 2-Ethylhexyl epoxystearate EPR EPR rubber. See EPM rubber EPT. See EPDM rubber... [Pg.1104]

Uses Raw material for adhesives, sealants ManufJDistrib. Aldrich Trade Names A-C 1172 See also EPM rubber... [Pg.1322]

Bareco C-700] Bareco C-1035. See Microcrystalline wax Bareco C-4040. See Synthetic wax Bareco C-7500] Bareco C-8500, Bareco C-9500. See Polyethylene, oxidized Bareco CP-7. See EPM rubber Bareco E-1040] Bareco E-2020. See Polyethylene, oxidized... [Pg.380]

Bumyr. See Butyl myristate Buna AP147] Buna AP 241] Buna AP 248] Buna AP 251] Buna AP 258. See EPDM rubber Buna AP 301. See EPM rubber Buna AP 331] Buna AP 341] Buna AP 344] Buna AP 348] Buna AP 358] Buna AP 437] Buna AP 447] Buna AP451] Buna AP454] Buna AP 541]... [Pg.573]

Duslin p Du si in PP Powd.. See N-(Cyclohexylthio) phthalimide Dusoran MD. See Lanolin alcohol Dutch liquid Dutch oil. See Ethylene dichloride Dutch rush extract. See Horsetail (Equisetum arvense) extract Du-Ter . See Fentin hydroxide Dutral CO 034, Dutral CO 038, Dutral CO 043, Dutral CO 054 Dutral CO 058, Dutral CO 059, Dutral CO 554 Dutral CT 053. See EPM rubber... [Pg.1591]

Epcar EPM. See EPM rubber EPCH. See Hydrolyzed casein EPC-K. See Potassium ascorbyl tocopheryl phosphate... [Pg.1626]

EPistatic 100] EPistatic 102] EPistatic 112. See Lead sulfate, tribasic EPistatic 120] EPistatic 122. See Lead phthalate, dibasic Epi-Tex 611-Q. See Epoxy resin EPithai 120. See Lead phthalate, dibasic EPKKaoiin. See Kaolin EPM. See EPM rubber EPM rubber CAS 9010-79-1... [Pg.1632]

EPPS. See 3-[4-(Hydroxyethyl)-1-piperazinyl]-propanesulfonic acid EPR EPR rubber. See EPM rubber EPS. See polystyrene, expandable Epsom salts. See Magnesium sulfate heptahydrate Magnesium sulfate anhydrous EPsyn 40-A, EPsyn 70-A, EPsyn 2308 EPsyn 2506, EPsyn 4506 EPsyn 4906 EPsyn 5206 EPsyn 5508 EPsyn 5808 EPsyn 7506 EPsyn E801 EPT. See EPDM rubber... [Pg.1653]

Ethylene polymer. See Polyethylene Ethylene polymer, chlorosulfonated. See Polyethylene, chlorosulfonated Ethylene polymers. See Polyethylene Ethylene/propylene copolymer (INCI). See EPM rubber... [Pg.1727]

Kenplast ES-2. See Cumylphenyl acetate Kenplast ESB. See Cumylphenyl benzoate Kenplast PG. See Phenoxyethanol Kentonarome. See 3-Methyl-2-cyclopenten-2-ol-1-one Methyl cyclopentenolone KEP 010P, 020P, 070P, KEP110. See EPM rubber... [Pg.2303]

Kraton G 1726. See Styrene-ethylene/butylene-styrene block copolymer Kraton G 1750X] Kraton G 1765X. See EPM rubber... [Pg.2310]

Poly (ethylene-co-propylene). See EPM rubber Poly (ethylene-co-propylene-co-5-methylene-2-norbornene). See Ethylene-propylene-ethylidene norbornene Poly (ethylene-co-tetrafluoroethylene). See Ethylene/tetrafluoroethylene copolymer Poly (ethylene-co-vinyl acetate). See Ethylene/VA copolymer Polyethylene, crosslinked Synonyms XLPE XPE... [Pg.3481]

Polysar EPM 306 Polysar EPM405 Polysar EPMXF 004. See EPM rubber Polysar SI 018 Polysar SS 260. See Styrene/butadiene polymer Poiysar XL 30102 Polysar XL 40302 Polysar XL 68102. See Isobutylene/isoprene copolymer Polyset 2015. See Polyethylene, high-density Polysilicic acid. See Silica, hydrated Polysilicone. See Silicone elastomer Polysilicone-1... [Pg.3561]

Propene, polymer with ethene. See Propylene/ethylene copolymer EPM rubber... [Pg.3722]

R7557P. See Novolac resin R7559. See Phenolic resin RA-061. See EPM rubber Rabcide. See 4,5,6,7-Tetrachlorophthalide Racemethionine. See DL-Methionine Racemic calcium pantothenate. See Calcium DL-pantothenate... [Pg.3815]

Siltech E-2200, Siltech E-2201, Siltech E-2203, Siltech E-2204, Siltech E-2205, Siltech E-240a, Siltech E-2401, Siltech E-2403] Siltech E-2503. See Silicone Siltech F-Sa, Siltech F-100, Siltech F-35a, Siltech F-500, Siltech F-10,00a, Siltech F-12,500, Siltech F-60,000. See Dimethicone Siltech FVC. See Cyclomethicone Siltech MFF-159-B. See Dimethicone copolyol Siltech PS-60 Siltech PS-60-AS. See Silicone emulsion Siltek GR. See Polyethylene Siltek L. See EPM rubber Siltek M Super, Siltek M, Siltek PL See Polyethylene... [Pg.3950]

Big Chemical Encyclopedia

Chemical substances, components, reactions, process design ...