| Patents for C09F 1 - Obtaining, purification, or chemical modification of natural resins, e.g. oleo-resins (1,181) |
|---|
| 08/03/1994 | CN1090128A Increasing Production regulator for collecting Chinese sweet gum resin by chemical process |
| 06/29/1994 | CN1088601A Extracting method for gutta-percha |
| 06/09/1994 | WO1994012272A1 Rosin derivative as surfactants |
| 04/27/1994 | CN1085929A Method for mfg. glycerin abietate modified by maleic anhydride |
| 02/23/1994 | EP0583419A1 Acid-modified polyhydric alcohol rosin ester tackifiers and hot melt adhesive compositions containing those tackifiers. |
| 02/15/1994 | US5286845 Treating aqueous solution with pressurized carbon dioxide, then separating yields aqueous sodium bicarbonate layer and crude tall oil layer |
| 01/20/1994 | WO1993023132A3 Improved acidification of tall oil soap using carbon dioxide |
| 12/08/1993 | EP0572680A1 Process for producing rosin ester and colorless rosin |
| 11/30/1993 | US5266682 Esterified natural resin acids |
| 11/25/1993 | WO1993023132A2 Improved acidification of tall oil soap using carbon dioxide |
| 10/27/1993 | EP0567000A1 Dicyclopentadiene alcohol rosin acid derivatives |
| 10/25/1993 | CA2076212A1 Dicyclopentadiene alcohol rosin acid derivatives |
| 09/29/1993 | CN1076710A Method of extracting poplar bark lipid from poplar bark |
| 09/22/1993 | CN1076467A Method for extracting high purity shahao gum |
| 09/21/1993 | US5246998 Dicyclopentadiene alcohol rosin acid derivatives |
| 08/18/1993 | CN1075326A High-efficiency method for distillation of raw rosin and its apparatus |
| 07/13/1993 | CA1320193C Purified guaiacum resin and method for making the same |
| 07/08/1993 | WO1993013180A1 Process for producing rosin ester and colorless rosin |
| 07/06/1993 | US5225527 Modified colophony resins, a process for their preparation, their use and paper-sizing agents containing colophony resins of this type |
| 06/30/1993 | EP0548506A2 Oil soluble, phenolic resins of esterified resin acids, process for their preparation and their application in autogelling printing inks |
| 06/09/1993 | EP0441850B1 Condensation products based on colophonium maleic imides |
| 05/26/1993 | CN1072437A Production method of bleached shellac |
| 04/21/1993 | EP0537682A1 Rosin emulsion sizing agent, paper sized therewith and method of sizing using the same |
| 04/21/1993 | EP0537359A1 Rosin emulsion size for papermaking and process for sizing paper |
| 03/17/1993 | CN1069994A Acid-modified polyhydric alcohol rosin ester tackifiers and hot melt adhesive compositions containing those tackifiers |
| 02/17/1993 | EP0527582A1 Water-soluble rosin-based coatings and inks |
| 01/12/1993 | US5178674 Accelerators for cationic aqueous bituminous emulsion-aggregate slurries |
| 01/05/1993 | US5177133 Rosin tackifier |
| 12/30/1992 | EP0520541A2 Stabilized rosin and process for production and use thereof |
| 12/30/1992 | EP0520113A2 Water-soluble rosin polyamide resins |
| 12/29/1992 | US5175250 Stabilized rosin and process for production and use thereof |
| 11/25/1992 | CN2122864U Distilling pan |
| 11/24/1992 | US5166245 Blend of maleated rosin with allyl alcohol-styrene copolymer and polyol |
| 11/19/1992 | EP0513782A2 Nitrogen containing surface active agents derived from rosin acids |
| 11/12/1992 | WO1992019678A1 Acid-modified polyhydric alcohol rosin ester tackifiers and hot melt adhesive compositions containing those tackifiers |
| 11/10/1992 | US5162496 Method for the preparation of light-colored rosin esters |
| 10/21/1992 | CN1065474A Modified rosin and its process of electronic industry special purpose grade |
| 10/21/1992 | CN1065473A New technology for producing rosin |
| 10/15/1992 | WO1992017645A1 Rosin emulsion size for papermaking and process for sizing paper |
| 10/06/1992 | US5152832 Reaction product of rosin with one of fumaric acid or maleic , itaconic acid or anhydride and two secondary amine and polyol; adhesion, wettability, packaging stability |
| 08/26/1992 | CN1063885A Method for residue removal in continuous rosin production and related automatic residue remover |
| 06/09/1992 | US5120781 Acid-modified polyhydric alcohol rosin ester tackifiers and hot melt adhesive compositions containing those tackifiers |
| 06/03/1992 | EP0488054A1 Use of a mixed catalyst system to improve the viscosity stability of rosin resins |
| 06/02/1992 | US5118740 Rubber additive |
| 05/31/1992 | CA2044480A1 Use of a mixed catalyst system to improve the viscosity stability of rosin resins |
| 05/26/1992 | US5116945 Resinous substance |
| 04/22/1992 | CN1060485A Process for preparing yellow hollyhock gum |
| 04/14/1992 | US5104449 Water-soluable rosin-based coatings and inks |
| 04/01/1992 | EP0477449A1 Improved solution rosin resinate for publication gravure inks |
| 03/25/1992 | CA2026754A1 Solution rosin resinate for publication gravure inks |
| 03/04/1992 | CN1015717B Upgrading chinese lacquer |
| 03/03/1992 | US5093082 Purified guaiacum resin and method for making the same |
| 02/24/1992 | CA2037256A1 Bis-amide linked rosin acid derivatives |
| 01/28/1992 | US5084554 Discoloration inhibition by mixing with sodium hydroxymethane sulfonate |
| 01/21/1992 | US5082497 Rosin, acid, metal salt |
| 12/04/1991 | EP0459760A2 Method for the preparation of light-colored rosin esters |
| 11/19/1991 | US5066331 Varnishes and inks for packaging |
| 10/16/1991 | EP0451420A1 Accelerators for cationic aqueous bituminous emulsion-aggregate slurries |
| 10/09/1991 | CN2086260U Automatic deslagging unit for rosin continuous production |
| 10/03/1991 | WO1991014748A1 Purification process |
| 09/17/1991 | US5049652 Calcium esterification catalyst |
| 09/17/1991 | US5049607 Reduce cure time |
| 09/04/1991 | EP0444065A1 Condensation products based on colophonium maleic imides |
| 08/21/1991 | EP0441850A1 Condensation products based on colophonium maleic imides. |
| 08/07/1991 | EP0440060A1 Method for improving the colour stability of rosin resins |
| 08/06/1991 | US5037956 Esterification with reaction product of aniline and hydroquinone; polymer antidegradant |
| 07/23/1991 | US5034509 Method for improving the color and the stability of the color of carboxylic acid or a mixture of the same |
| 07/23/1991 | US5034060 Cationic aqueous bituminous emulsion-aggregate slurries with improved curing rates |
| 07/23/1991 | CA2034428A1 Use of sodium hydroxymethane sulfonate to improve the color stability of rosin resins |
| 07/17/1991 | CN1053077A Method for refining urushi (japanese lacquer) |
| 06/25/1991 | CA1285276C Pressure sensitive adhesive composition and production thereof |
| 06/11/1991 | US5023319 Stabilization of modified rosin |
| 06/05/1991 | CA2004579A1 Polyimide/polyamide derivatives of diels-alder/ene adducts of phenol-modified rosin esters |
| 06/04/1991 | US5021548 Sodium hydroxymethane sulfonate to improve the color stability of rosin resins |
| 05/28/1991 | US5019167 Zinc compound neutralizer |
| 05/28/1991 | CA1284463C Process for the extraction of nonpolar constituents of hops |
| 04/16/1991 | US5008382 Cationic aqueous bituminous emulsion-aggregate slurries preparation |
| 02/26/1991 | US4996295 Amide linked rosin acid derivatives |
| 02/26/1991 | US4996258 Hydroformylated thermal oils |
| 02/06/1991 | CN1011512B Modifying process for rosin |
| 12/12/1990 | EP0401645A2 Modified rosin resins, method for their manufacture, use thereof and paper sizing agents containing the same |
| 12/08/1990 | CA2018350A1 Modified colophony resins, a process for their preparation, their use and paper-sizing agents containing colophony resins of this type |
| 11/20/1990 | CA1276630C Esterification process with calcium hydroxybenzyl phosphonate catalyst |
| 10/09/1990 | US4962186 Method of improving the color of tall oil rosin esters by recrystallizing and distilling rosin followed by esterifying |
| 10/02/1990 | CA1274822A1 Method of improving the color of tall oil rosin ester |
| 09/25/1990 | CA1274505A1 Method of improving the color of tall oil rosin |
| 09/25/1990 | CA1274504A1 Method for rosin esterification |
| 09/19/1990 | EP0387528A1 Resin based on rosin acids and triglycidyl isocyanurate |
| 08/09/1990 | WO1990008852A1 Method for obtaining a reactive cationized glue for mass sizing or press sizing of paper, and emulsion thus obtained |
| 08/07/1990 | US4946879 Reaction product of rosin acid and a polyfunctional compound reacting with carboxyl functionality; use in rubber compounds |
| 08/07/1990 | US4946695 Process for the extraction of nonpolar constituents from plant material |
| 07/17/1990 | CA1271860A1 Urethane-modified rosin esters |
| 07/12/1990 | WO1990007559A1 Production of liquid rosin ester |
| 07/03/1990 | US4939238 Nitrogen-containing condensation products based on unmodified or modified natural resins, process for the preparation thereof and the use thereof |
| 06/06/1990 | CN1042727A Modification method of rosin |
| 05/17/1990 | WO1990005159A1 Condensation products based on colophonium maleic imides |
| 05/17/1990 | WO1990005158A1 Condensation products based on colophonium maleic imides |
| 05/10/1990 | DE3837520A1 Kondensationsprodukte auf basis von kolophonium-maleinimiden Condensation products based on rosin-maleimides |
| 05/10/1990 | DE3837518A1 Kondensationsprodukte auf basis von kolophonium-maleinimiden Condensation products based on rosin-maleimides |
| 03/06/1990 | US4906733 Process for preparing colorless rosin |