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Globalprene 1485 is a reprocessable plastics modifier by LCY Group.
Possesses high strength and low viscosity.
Globalprene 1485 acts like vulcanized rubber without undergoing vulcanization.
CAS: 9003-55-8
MF: (C8H8.C4H6)x
MW: 158.24
EINECS: 618-370-2
Synonyms
1,3-BUTADIENE/STYRENE COPOLYMERS;Styrene-butadiene rubber,oil-extended;Styrene-butadiene-styrene block copolymer;sd345(polymer);sd354;sks85;soilstabilizer661;solprene300
Globalprene 1485 is a radial, oil-extended styrene-butadiene block copolymer (SBS-OE) designed for footwear compounding.
Globalprene 1485 is easy to color match and helps reduce processing costs with the use of simple molding machines and technology.
Globalprene 1485 improves the impact strength and low-temperature properties of PE, LDPE, HDPE and PP.
By far the most widely used type of synthetic rubber, its consumption for all applications is four times that of polybutadiene, its nearest competitor, and 1.5 times that of all other elastomers combined.
Globalprene 1485's manufacture involves copolymerization of three parts butadiene with one part styrene.
These materials are suspended in finely divided emulsion form in a large proportion of water, in the presence of a soap or detergent.
Also present in small amounts are an initiator or catalyst which is usually a peroxide, and a chain-modifying agent such as dodecyl mercaptan.
Styrene-butadiene copolymer is a polymer.
Globalprene 1485 Chemical Properties
Melting point: 253 °C
Density: 1.04 g/mL at 25 °C
Refractive index: 1.57
Solubility: solvents with solubility parameters between 7.7 and 9.4: soluble
Form: slab/chunk
Stability: Stable. Combustible. Incompatible with strong oxidizing agents.
Cosmetics Ingredients Functions: OPACIFYING
InChI: InChI=1S/C8H8.C4H6/c1-2-8-6-4-3-5-7-8;1-3-4-2/h2-7H,1H2;3-4H,1-2H2
InChIKey: MTAZNLWOLGHBHU-UHFFFAOYSA-N
LogP: 2.700 (est)
IARC: 3 (Vol. 19, Sup 7) 1987
EPA Substance Registry System: Globalprene 1485 (9003-55-8)
Uses
Molded or extruded into toys, packaging, appliances, communication cassettes, dinnerware and serviceware.
Component of hot melt adhesives, sealants, asphalt and oil gels.
Modifier for polymers, thermosets and general rubber compounding.
Direct molded or extruded auto parts, sporting goods, footware and film.
Production Methods
Globalprene 1485 is prepared mainly by emulsion and solution polymerization in a free-radical process with a mercaptan, such as dodecylmercaptan, which is used as a chain-transfer agent to control molecular weight.
In the emulsion process, a soapstabilized water emulsion of styrene and butadiene is polymerized in continuous reactors to form Globalprene 1485 elastomer.
Globalprene 1485 is produced at a temperature of 5–10°C, and “hot” SBR at about 50°C.
Globalprene 1485 is typically made in hydrocarbon solution with an n-butyllithium initiator.
The major differences between emulsion and solution styrene–butadiene are in the linearity and molecular-weight distribution of the polymer chains.
In nonpolar solvents, the tendency is to produce block copolymer, but random copolymers are formed in polar solvents.
Globalprene 1485 can be vulcanized similar to natural rubber but generally requires less sulfur and is more accelerated because of its lowunsaturation.
