Ethylene methacrylate

The organic and aqueous phases are prepared in separate tanks before transferring to the reaction ketde. In the manufacture of a styrenic copolymer, predeterrnined amounts of styrene (1) and divinylbenzene (2) are mixed together in the organic phase tank. Styrene is the principal constituent, and is usually about 90—95 wt % of the formulation. The other 5—10% is DVB. It is required to link chains of linear polystyrene together as polymerization proceeds. DVB is referred to as a cross-linker. Without it, functionalized polystyrene would be much too soluble to perform as an ion-exchange resin. Ethylene—methacrylate [97-90-5] and to a lesser degree trivinylbenzene [1322-23-2] are occasionally used as substitutes for DVB. [Pg.373]

Ionomer resins consisting of ethylene—methacrylic acid copolymers partially neutralized with sodium or zinc were commercially introduced in 1964 by Du Pont under the Sudyn trademark (1). More recently, a similar line of products, sold as Hi-Mdan resins, has been commercialized by Mitsui—Du Pont in Japan. lolon ionomeric resins, based on ethylene—acrylic acid, are produced by Exxon in Belgium. Ionomers containing about 1 mol % of carboxylate groups are offered by BP in Europe as Novex resins. Low molecular weight, waxy Aclyn ionomers are produced and sold by AHiedSignal. [Pg.404]

EMAA = ethylene-methacrylic acid. Decimal numbers are decimal fractions of acid groups that have been neutralized. [Pg.405]

Figure 4 Secant modulus versus percent conversion for Na and Ca salts of an ethylene/methacrylic acid ionomer.

Ionomer. Ionomer is the generic name for polymers based on sodium or zinc salts of ethylene-methacrylic acid copolymers in which interchain ionic bonding, occurring randomly between the long-chain polymer molecules, produces solid-state properties. [Pg.1290]

Ethylene methacrylic acid (1-10%) copolymers are known as ionomers Some of the COOH groups are esterified in the commercial product. [Pg.151]

Figure 4.30. Ethylene, methacrylic acid and ethylene-methacrylic acid copolymer formulae...

Ethylene monoChloroTriEluoroEthylene Electrical Electronics Ethylene-MethAcrylate ionomers ElectroMagnetic Interference EPoxy... [Pg.893]

Acrylonitrile-butadiene-styrene (ABS) copolymers Ethylene-methacrylic acid copolymers Styrene-butadiene rubber copolymers (SBR)... [Pg.136]

Surlyn A (ER-1552) Ethylene-methacrylic acid random copolymer neutralized with sodium ion E. I. du Pont de Nemours Co., Inc. [Pg.151]

Table I. duPont Ethylene-Methacrylic Acid Ionomer Resins...

Figure 17 shows the infrared spectra (from 1900 to 1200 cm-1) of the completely ionized calcium ionomer of an ethylene-methacrylic acid copolymer recorded at room temperature (a) and the same film recordered at 40, 70, 130, and 150 °C (b-e, respectively). This recording of the spectra at the elevated temperatures accentuates the sharp doublet at 1515/1548 cm which is characteristic of an interaction or vibrational splitting of the pairs of COO" groups. [Pg.125]

The response of ion-containing ethylene-methacrylic add copolymers has also been investigated 306). The strain amplitude of the samples was 2% and the period of external stress was 50,000microseconds. Changes in the dichroic ratio of the 2673 cm "1 band were observed as a function of strain in times as short as 200 microseconds. Other spectroscopic changes were observed but not interpreted in terms of structural changes. [Pg.140]

A copolymer derived from monomers comprising a mixture of high density poly(ethylene) (HDPE), a copolymer of ethylene/methacrylic acid, and a synthetic block copolymer rubber such as styrene/butadiene, and... [Pg.282]

By adjusting the exposure time, quantitative conversion of carboxylic acid groups (followed near 1710 cm 1) can be obtained (fig. 5). Typical bands at 1836, 1796 and 1555 cm 1 correspond to acid fluorides, acid chlorides and ammonium carboxylates groups respectively. In the case of EMA (Ethylene-Methacrylic acid) some sodium carboxylate groups were initially present. FTIR analysis showed that these functions (1559 cm 1) were also converted into acid fluorides ... [Pg.26]

The first commercial ionomers were introduced in the mid-1960s when Dupont produced an ethylene/methacrylic acid copolymer under... [Pg.155]

Infrared Spectra of Ionomers. Infrared absorption data, first published in 1964 (11), show that partial neutralization of ethylene—methacrylic acid introduced new absorption bands at 1480-1670 cm-1 for the ionized carboxylate group while the 1698 — cm-1 band of the free acid carboxyl diminishes in size (21). In addition to providing information on structural features, the numerous absorption bands are significant in applications technology, providing rapid warmup of film and sheet under infrared radiation. [Pg.407]

ABA ABS ABS-PC ABS-PVC ACM ACS AES AMMA AN APET APP ASA BR BS CA CAB CAP CN CP CPE CPET CPP CPVC CR CTA DAM DAP DMT ECTFE EEA EMA EMAA EMAC EMPP EnBA EP EPM ESI EVA(C) EVOH FEP HDI HDPE HIPS HMDI IPI LDPE LLDPE MBS Acrylonitrile-butadiene-acrylate Acrylonitrile-butadiene-styrene copolymer Acrylonitrile-butadiene-styrene-polycarbonate alloy Acrylonitrile-butadiene-styrene-poly(vinyl chloride) alloy Acrylic acid ester rubber Acrylonitrile-chlorinated pe-styrene Acrylonitrile-ethylene-propylene-styrene Acrylonitrile-methyl methacrylate Acrylonitrile Amorphous polyethylene terephthalate Atactic polypropylene Acrylic-styrene-acrylonitrile Butadiene rubber Butadiene styrene rubber Cellulose acetate Cellulose acetate-butyrate Cellulose acetate-propionate Cellulose nitrate Cellulose propionate Chlorinated polyethylene Crystalline polyethylene terephthalate Cast polypropylene Chlorinated polyvinyl chloride Chloroprene rubber Cellulose triacetate Diallyl maleate Diallyl phthalate Terephthalic acid, dimethyl ester Ethylene-chlorotrifluoroethylene copolymer Ethylene-ethyl acrylate Ethylene-methyl acrylate Ethylene methacrylic acid Ethylene-methyl acrylate copolymer Elastomer modified polypropylene Ethylene normal butyl acrylate Epoxy resin, also ethylene-propylene Ethylene-propylene rubber Ethylene-styrene copolymers Polyethylene-vinyl acetate Polyethylene-vinyl alcohol copolymers Fluorinated ethylene-propylene copolymers Hexamethylene diisocyanate High-density polyethylene High-impact polystyrene Diisocyanato dicyclohexylmethane Isophorone diisocyanate Low-density polyethylene Linear low-density polyethylene Methacrylate-butadiene-styrene... [Pg.958]