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| Number | Title | Issue Date |
| 6087318 | Process to produce disproportionated rosin based emulsifier for emulsion polymerization A process for disproportionating rosins using iodide catalysts. In one embodiment, a tall oil rosin is heated in the presence of a lithium iodide catalyst. In another embodiment, a catalyst system is formed from a mixture of lithium iodide and ferrous iod... | 07/11/2000 |
| 6034210 | Process for producing highly reactive modified phenolic resin and molding material Disclosed is a process for producing a highly reactive modified phenolic resin, which comprises mixing a heavy oil or pitch with 0.3 to 10 mol of a phenol, 0.2 to 9 mol in terms of formaldehyde, of a formaldehyde compound and 0.01 to 3.0 mol of an acid ca... | 03/07/2000 |
| 5698668 | Modified natural-resin acid esters, processes for their preparation, and their use as binder resins in printing inks Toluene-soluble modified natural-resin acid esters which can be prepared by reacting at least one compound from each of the component groups: A) natural resins or natural-resin acids; B) ,ଲ-ethylenically unsaturated carboxylic acids or their ... | 12/16/1997 |
| 5594099 | Modified resinates A modified resinate prepared by reacting A) rosins or rosin acids with B) aldehyde components and optionally C) ,ଲ-olefinically unsaturated carboxylic acids or anhydrides thereof, subsequently reacting the resultant adduction products with D) phenols a... | 01/14/1997 |
| 5395920 | Process for preparing rosin and colorless rosin comprising disproportionation and dehydrogenation The present invention relates to a process for preparing a rosin ester, which comprises esterifying a purified product of a disproportionated rosin with an alcohol, and then subjecting the esterified rosin to dehydrogenation in the presence of a dehydroge... | 03/07/1995 |
| 5175250 | Stabilized rosin and process for production and use thereof A process for the production of a stabilized rosin and a stabilized rosin obtainable by the process. According to the process rosin is heated in the presence of a phosphoric acid or a strong acid in combination with a phosphate containing substance and di... | 12/29/1992 |
| 5073623 | Condensation products based on rosin A rosin based condensation product produced by reacting in a multistage process the following reactants, rosin, phenolic compounds, formaldehyde, unsaturated C3 -C4 dicarboxylic acid or maleic anhydride, monounsaturated or polyunsatu... | 12/17/1991 |
| 5021548 | Sodium hydroxymethane sulfonate to improve the color stability of rosin resins The color stability of rosin esters is improved by carrying out the esterification reaction in the presence of 0.05% to 5% sodium hydroxymethane sulfonate (SHS). The color stability of polymerized rosin is improved by heating at a temperature of 250°-290... | 06/04/1991 |
| 4996258 | Hydroformylated thermal oils The present invention relates to a hydroformylated thermal oil which is useful as a total or partial replacement for extender or processing oil in rubber formulations. The hydroformylated thermal oil is prepared by reacting decarboxylated rosin acid with ... | 02/26/1991 |
| 4992537 | cDNA encoding 92-kDA type IV collagenase A novel 92-kDa type IV collagenase has been purified to homogeneity from SV-40 transformed fetal lung fibroblasts, its primary structure determined and characterized and a cDNA clone representing the full size protein has been developed.... | 02/12/1991 |
| 4302371 | Stabilized rosin ester and pressure-sensitive adhesive and hot-melt composition based thereon A process for preparing a stabilized rosin ester having a higher softening point which comprises subjecting a rosin to disproportionation and purification, and esterifying the resulting purified disproportionated rosin with a tri- or more valent polyhydri... | 11/24/1981 |
