Hycar® butadiene-acrylonitrile

The good low-temperature properties of the flexibilized epoxy resin systems are due to the increased mobility of the segments from the main relaxation down to the y relaxation. Epoxy resin pol3nners modified with Empol(dimerized fatty acid) or Hycar (butadiene-acrylonitril copolymer, terminated by carboxyl groups) show notable strength, impact resistance, and temperature-shock resistance down to 20 Yet none of these systems is ductile... 

Hycar Butadiene acrylonitrile copolymer B. E Goodrich Chemical Co. 

Nitrile Rubber. Vulcanized mbber sheets of NBR and montmorillonite clay intercalated with Hycar ATBN, a butadiene acrylonitrile copolymer have been synthesized (36). These mbber hybrids show enhanced reinforcement (up to four times as large) relative to both carbon black-reinforced and pure NBR. Additionally, these hybrids are more easily processed than carbon black-filled mbbers. 

Hycar, D-24 butadiene—styrene, butadiene—acrylonitrile, acrylate emulsion good fair ... 

Nevertheless, it would seem reasonable that, in the absence of any liquid plasticizer medium at all, mobility of ionic impurities would be reduced to such a low level that volume resistivity would remain high. For example, it is well known that polyvinyl chloride can be blended with nitrile rubber, such as Goodrich Hycar 1032 butadiene/acrylonitrile copolymer, and such polyblends are quite soft and flexible without the use of any liquid plasticizer at all (Table VII). 

The material used was a diglycidyl ether of bisphenol A (DGEBA) based epoxy resin (Ciba-Geigy, GY250) cured using stoichiometric amounts of 4,4 -diamin-odiphenyl sulfone (DDS). The rubber used for the modifications was Hycar car-boxy-teminated butadiene-acrylonitrile (CTBN) rubber (1300 x 13). The curing schedule for all the rubber-modified epoxy-DDS systems was as follows first the rubber and then DDS were mixed with the epoxy resin and stirred at 135 °C until the DDS was dissolved the systems were cured for 24 h at 120 °C and then postured for 4 h at 180 °C. The control epoxies were cured according to the same schedule. 

Liquids, butadiene-acrylonitrile copolymers (Hycar ATBN or CTBN, B.F. Goodrich)... 

Hycar OR, butadiene acrylonitrile compounded Resistant, attacked... 

Hybrid safflower oil. See Hybrid safflower (Carthamus tinctorius) oil Hybridur 560 Hybridur 57a, Hybridur 580. See Urethane-acrylate resin Hy Brite 100 Siurry. See Aluminum hydroxide Hycar 1552, Hycar 1561, Hycai 1562, Hycar 1571, Hycar 1572, Hycar 1572X64. See Butadiene/acrylonitrile copolymer Hycar 1577, Hycar 1578X1. See Acrylonitrile/butadiene/styrene copolymer Hycar 2671, Hycar 2679, Hycar 26083, Hycar 26084, Hycai 26092, Hycar 26106, Hycar 2612a, Hycar 26138. See Acrylic resin... 

Semi-SINs using amine-cured epoxies and butadiene-acrylonitrile rubber " were found to yield adhesives with extremely high bonding strength to metal. The rubber was based on Hycar, and the epoxy was based on a range of compositions, including epoxidized soy bean oil (Example 2). Sometimes the rubber was sulfur cured, yielding an IPN. 

Mercaptan Oligobutadiene Oligobutadiene Co-oligo(butadiene— acrylonitrile Goodrich Goodrich Hycar MTB Hycar MTBN 284... 

Further toughening of VERs modified with a CTBN elastomer by introducing an epoxy-terminated butadiene-acrylonitrile copolymer diluted with a styrene monomer (Hycar ETBN 1300x40 from BF Goodrich) was presented [69]. The improvement of toughness achieved by the incorporation of the CTBN elastomer (Table 21) extends the range of VER applications from corrosion resistant equipment to automotive, marine and infrastructure markets. 

Elastomeric modifiers are used to increase the peel strength (toughness) of epoxy resin adhesives. The most commonly used elastomeric materials are functionally terminated polybutadiene resins made by the B.F. Goodrich Company, Chemical Group under the trade name of Hycar Reactive Liquid Polymers. Initially, carboxyl-terminated butadiene acrylonitrile (CTBN) resins were introduced the carboxyl terminated materials are usually adducted with the epoxy resin to improve compatibility and to increase the toughness. 

A mixed polymer of butadiene and acrylonitrile (Perbunan, Hycar, Chemigum) may be vulcanised like rubber and possesses good resistance to oils and solvents in general. 

Poly(butadiene- (9-acrylonitrile) [9008-18-3] NBR (64), is another commercially significant random copolymer. This mbber is manufactured by free-radical emulsion polymerization. Important producers include Copolymer Rubber and Chemical (Nysyn), B. F. Goodrich (Hycar), Goodyear (Chemigum), and Uninoyal (Paracdl). The total U.S. production of nitrile mbber (NBR) in 1990 was 95.6 t (65). The most important property of NBR mbber is its oil resistance. It is used in oil well parts, fuels, oil, and solvents (64) (see Elastomers, synthetic— nitrile rubber). 

Copolymers of butadiene and acrylonitrile (CH2=CH—GsN) are termed Perbunan, Hycar, Ameripol and Chemigum ... 

The copolymers of butadiene (55 to 82%) and acrylonitrile (45 to 18%) (Hycar) are oil- and heat-resistant elastomers which contain the following random repeating units ... 

Materials. Hycar CTBN is a registered trade name of a carboxyl-terminated, liquid copolymer of butadiene and acrylonitrile (B. F. Goodrich Chemical Co.). For most purposes it can be represented structurally as ... 

Epoxy-Terminated Poly (butadiene-co-acrylonitrile) (ETBN). A mixture of 730 g of bisphenol A diglycidyl ether (5.4 mol epoxy/kg), 200 g of carboxy-terminated poly (butadiene-co-acrylontrile) (Hycar 1300 x 13 from BFGoodrich, 26 wt% acrylonitrile content, acid number of 32 mg KOH/g), 64 g of bisphenol A, and 5 g triphenylphosphin was heated at 130 °C for 3 h to yield ETBN with a viscosity of 130,000 mPa-s (40 °C) and 3.3 mol epoxy/kg. 

Polymethylacrylate (PMA) and polymethylmethacrylate (PMMA) were discovered, respectively, in 1880 and 1930. The resins have been used for the production of transparent plastic sheets, viz. Plexiglas or Perspex , used for the military aircraft cockpit canopies, gunner s turrets and the like [Riddle, 1954]. Acrylic elastomers (ACM or ANM) were developed by Rohm in 1901, and commercialized in 1948 as Hycar vulcanizable copolymers of ethyl acrylate, allyl maleated lactones, chloroethyl vinyl ether, butadiene, isoprene, acrylonitrile, etc. [Mast et al., 1944]. Since the 1950 s, a wide variety of acrylic compatibilizers and impact modifiers have been developed. 

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