DOVER CHEMICAL CORP

Stevenson D R Harr M E Jakupca M R Dover Chemical Corp. 

Kodali S Hood W Jennings T Fender M Dover Chemical Corp. 

Jakupca M R Harr M E Stevenson D R Jennings T Dover Chemical Corp. 

DOVER CHEMICAL CORP. Bromine Containing Flame Retardants ... 

Dover Chemical Corporation produces resinous chlorinated paraffins under a name Chlorez . All Chlorez grades have a physical form of white powder (particles smaller than 50 mesh) with chlorine content around 70%. The manufacturer recommends Chlorez as flame retardants (in a combination with antimony trioxide) and lately as a nonreactive coupling agent under a brand name Doverbond (such as Doverbond DB 4300 or Doverbond 3000). The manufacturer claims that Chlorez in the amount of 10% along with 3% of a lubricant in the WPC shows an effect of a coupling agent and increases the flexural strength and modulus of the product, as well as the UV and moisture resistance (private communication, Dover Chemical Corp.). DB 4300 lists at 1.50/lb [12,13]. 

Source Adapted from 13-10, 3-11, 3-12, 3-13. 3-14, 3-18] Suppliers Songwon Industrial Co. Ltd. (Songnox). Chemtura Corp. (Alkanox, Ultranox, Weston. Natgard), Dover Chemical Corp. (Doverphos), CIba Specialty Chemicals, Inc. (Irgafos) p (powder), 1 (liquid), g (granule), f (flake) ... 

Suppliers Songwon Industrial Co. Ltd. (Songnox), Chemtura Corp. (Anox, Ultranox), Dover Chemical Corp. (Dovemox), Ciba Specialty Chemicals, Inc. (Irganox, Fiberstab, Irgastab)... 

Doverphos S-9228 high performance phosphite, supplier design guide. Dover Chemical Corp. 

We add performance with Doverphos HiPure 4 TNPP, supplier marketing literature. Dover Chemical Corp. 2001. 

Representatives of various industries [17] have examined some smoke depressants and flame retardant resins introduced by various US Companies in relation to US legislation. These include smoke suppressed polyvinylchloride (PVC) (BE Goodrich) and polyurethane (PU) foams (Mobay Chemical), and smoke suppressant additives from Climax Molybdenum, and Sherwin-Williams (molybdenum compounds), Solem Industries, and Alcoa Chemicals (aluminium trihydrates, for polypropylene (PP) and PVC), Dover Chemical Corp., (aromatic bromine compound for PP), and US Borax (zinc borate). 

Several formulation ingredients contribute to volatile emissions, including plasticisers, viscosity modifiers and liquid metal soaps. An investigation of some flexible PVC formulations by Dover Chemical Corp. foimd that the majority of the emissions were aliphatic hydrocarbons derived from the compatibihsing agents in the barimn/zinc stabilisers. An organophosphate-based stabiliser was recommended, in combination with zinc carboxylate. The elimination of the barimn soap did not spoil the thermal stability. 

Most of the extenders used in plasticised PVC compositions to reduce the amount of plasticiser required are epoxidised compounds, hydrocarbons or chlorohydrocarbons, including a few medium chain length chlorinated paraffins (MCCPs). These last substances typically have 14 to 17 carbon atoms, and unlike their longer chain analogues they are thought to pose a threat to some types of aquatic life. Dover Chemical Corp. is marketing low volatility liquid chlorinated hydrocarbon products under the name Paroil X-10 as extenders to replace part of the plasticiser in PVC. 

Amcor, Occidental Chemical, Dover Chemical Corp., National Chemicals and Velsicol Chemical Corp. 

Adeka Palmarole SAS, Akcros Chemicals, Akdeniz Polymer Additives, Arkema, Baerlocher, Chemson, Clariant, Crompton, Dover Chemical Corp., Ferro Belgium, Hammond, Lamberti SpA, National Chemicals, PQ Corp., Rohm and Haas and Sim Ace. 

Dover Chemical Corp. is a subsidiary of ICC Industries Inc. headquartered in New York City. Dover s products are extremely diverse the chemicals made include brominated and bromo-chlorinated flame retardants, benzophenone and hindered amine light stabilisers, phosphite stabilisers, surfactants, lubricants, metallic stearates, and alkyl phenols. It is also a leading manufacturer of chlorinated hydrocarbon waxes, and there are several chemical products unrelated to plastics. 

Dover Chemical Corp. Ferro Crop. Witco Corp. 

An oligomeric phenyl dipropylene glycol phosphite, averaging eight phosphite groups per mole, is a commercial color stabilizer (Doverphos 12, Dover Chemical Corp.) for rigid and plasticized PVC. 

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