| DOVER CHEMICAL CORPORATION Patent applications |
| Patent application number | Title | Published |
|---|
| 20110263760 | ALKYLPHENOL FREE - LIQUID POLYMERIC PHOSPHITE POLYMER STABILIZERS - An alkylphenol-free liquid polymeric phosphite is described of general Structure IV illustrated below | 10-27-2011 |
| 20110196079 | Mixed alkyl-alklaryl-phenyl phosphite polymer additive - A process to stabilize a polymer is described utilizing the step of adding a phosphite reaction product of a triphenyl phosphite or lower molecular weight trialkyl phosphite (e.g., trimethyl phosphite) or triaryl phosphite, with from approximately 1 to 2 moles of preferably a paracumyl phenol, and with from approximately 1 to 2 moles of at least C | 08-11-2011 |
| 20110021839 | PHASE TRANSFER CATALYST FOR SYNTHESIS OF PENTAERYTHRITOL DIPHOSPHITES - The present invention pertains to a process for the preparation of pentaerythritol diphosphites via a one-pot, direct esterification of phosphorus trichloride with pentaerithritol, and either an alkylphenol or an arylalkylphenol which functions both as a reactant and as a solvent, with a phase transfer catalyst such as a quaternary ammonium salt. | 01-27-2011 |
| 20100216923 | METHOD FOR REDUCING PLATE-OUT OF SOLID PHOSPHITES IN POLYMERS - A process is described which reduces the amount of bloom and/or plate-out of phosphite antioxidants during polymer processing by the addition of at least one polyethylene glycol (or blends thereof) or polycaprolactones (or blends thereof) having an average molecular weight of approximately 1,000 to 20,000, most preferably between 4,000 to 10,000. | 08-26-2010 |
| 20080305974 | NITRATED EXTREME PRESSURE ADDITIVES AND BLENDS - This invention relates to products useful in friction-reducing extreme-pressure lubricating applications such as internal combustion engines, gear oils and applications which involve rubbing metallic moving parts. The invention includes additive blends and a process of using synergistic combinations of nitro compounds with non-chlorine containing additives such as sulfur-containing moieties and phosphorus-containing moieties. | 12-11-2008 |
