polysulphide

(redirected from polysulphides)
Related to polysulphides: polysulfide rubber, polysulfide impression material

polysulphide

(ˌpɒlɪˈsʌlfaɪd) or

polysulfide

n
(Elements & Compounds) any sulphide of a metal containing divalent anions in which there are chains of sulphur atoms, as in the polysulphides of sodium, Na2S2, Na2S3, Na2S4, etc
References in periodicals archive ?
III-4 Table 17: US Exports of Petroleum Resins, Coumarone, Indene, Polyterpenes, Polysulphides in Primary Forms (2013 & 2014): Percentage Breakdown of Value Exports by Country of Destination (includes corresponding Graph/Chart) III-4 Table 18: US Imports of Petroleum Resins, Coumarone, Indene, Polyterpenes, Polysulphides in Primary Forms (2013 & 2014): Percentage Breakdown of Value Imports by Country of Origin (includes corresponding Graph/Chart) III-5 Corporate Development.
Some of technological aspects, like development of host matrices, interactions of host matrix with polysulphides and interactions between sulphur and electrolyte have been successfully developed within Eurolis project.
The core components of its products are high-performance polysulphides and fast-curing epoxy mortars.
Commonly window manufacturers use butyls as primary sealants, and polysulphides, polyurethanes and silicones as secondary sealants.
Although they were able to demonstrate qualities of radiopacity equal to that of the polysulphides, there were associated physical property drawbacks including hydrogen bubble formation in dies poured from the impressions, and evidence of long term breakdown limiting the shelf life.
No zerovalent sulphur, such as polysulphides and/or elemental sulphur, was reported.
Initial trials were conducted with the following herbals: ginger, kalajeera, Asafoetida (Hing) and garlic rich in polysulphides and/or selenium), katha with polyphenols, and alkaloids of Vayuvidanga (Embelia ribes) and Chitramoolam (Plumbago zeylanica) and Tankanam (Borax).
Benzoflex 400 polypropylene glycol dibenzoate used in flexible PVC, acrylics, nitrite rubber, polysulphides and polyvinyl acetate.
polyurethanes, liquid polysulphides and unsaturated polyester resins).
As Platinum P-1000 offers excellent compatibility in many polymer systems including PVC, urethanes, latex acrylics, polysulphides and silicone hybrid systems, it offers a versatile non-phthalate plasticizer for the manufacture of a broad range of products.
Although the polysulphides can't undergo further electrochemical reaction within the silica, the weak binding means that they are gradually released later in the charge cycle to form insoluble [Li.