Patent application number | Description | Published |
20100016538 | POLYLACTIDE-URETHANE COPOLYMERS - A polylactide-urethane copolymer obtainable by a process, which comprises the step of contacting:
| 01-21-2010 |
20100112652 | Method for Producing Lactic Acid By The Fermentation of a Self-Sufficient Medium Containing Green Cane Juice - The invention relates to a process for producing lactic acid by fermentation of a sugarcane extract by means of microorganisms belonging to the | 05-06-2010 |
20100113734 | PROCESS FOR PRODUCING POLYLACTIDE-URETHANE COPOLYMERS - A process for producing polylactide-urethane copolymers, which comprises the step of contacting a polylactide having terminal hydroxyl groups, produced by contacting at least one lactide monomer with a diol or diamine, with a diisocyanate compound optionally in the presence of a second diol or diamine in the presence of a catalytic system under polymerisation conditions characterised in that the polylactide and the polylactide-urethane copolymers are produced by reactive extrusion. | 05-06-2010 |
20110155557 | Method for Obtaining Lactide - Processes for producing lactide from lactic acid oligomers are described herein. The processes generally include heating a lactic acid oligomer in the presence of a catalyst at a temperature of between 150° C. and 300° C. under a pressure of less than 0.01 MPa to form a lactide; distilling the lactide; and condensing and recovering the lactide, wherein the catalyst is a metal salt of the phosphite anion PO | 06-30-2011 |
20110190512 | Method of Obtaining Lactide - The present invention relates to a method of obtaining lactide by means of a solvent of the ether class from a mixture that is in liquid form comprising lactide, meso-lactide, and other impurities. | 08-04-2011 |
20110319588 | ISOTACTIC POLYLACTIC ACID AND METHOD FOR PRODUCING SAME - Method of polymerization for producing polylactic acid of configuration L or D, with number-average molecular weight between 60 000 and 200 000 having an insertion defect rate between 0 and 0.5 wt. % of polylactic acid and a racemization defect rate between 0 and 2.5 wt. % of polylactic acid, characterized in that the method is a bulk process comprising contacting, at a temperature between 170 and 200° C. and for a reaction time between 5 and 75 minutes, the corresponding lactide of stereochemical configuration L-L or D-D having an optical purity of L or D of at least 99.5 wt. % with at least one catalyst in the presence of an initiator to form poly-L-lactic acid or poly-D-lactic acid. | 12-29-2011 |
20120029228 | CHEMICAL RECYCLING OF PLA BY ALCOHOLYSIS - A process for recycling a polymer blend necessarily containing PLA, comprising grinding, compacting, dissolving in a solvent of PLA, removing the undissolved contamining polymers, alcoholysis depolymerisation reaction and purification steps. | 02-02-2012 |
20120142958 | CHEMICAL RECYCLING OF PLA BY HYDROLYSIS - A process for recycling a polymer blend necessarily containing PLA, comprising grinding, compacting, dissolving in a solvent of PLA, removing the undissolved contamining polymers, alcoholysis depolymerisation reaction and purification steps. | 06-07-2012 |
Patent application number | Description | Published |
20110160480 | Continuous Process for Obtaining a Lactic Ester - Continuous method for obtaining a lactic ester, characterised in that it comprises the following steps:
| 06-30-2011 |
20110300220 | SOLID CALCIUM LACTATE IN SUBSTANTIALLY SPHERICAL FORM - Solid calcium lactate in the form of substantially spherical particles, characterised in that the spherical particles have a particle size distribution such that most of the particles are between 280 and 550 microns in size and the calcium lactate can be rapidly dissolved in water. | 12-08-2011 |
20110319660 | METHOD OF PURIFYING LACTIC ACID BY CRYSTALLIZATION - Method for purifying lactic acid by crystallisation in one or a plurality of steps, characterised in that crystals are formed from an impure aqueous lactic acid solution having a colour of >500 Hazen, at a concentration between 85 and 95% by controlling the lactic acid oligomer content expressed in terms of a relative monomer content greater than 80% and controlling the degree of supersaturation of the solution between 1 and 60% in order to obtain lactic acid crystals having a specific surface area by mass of <0.05 m | 12-29-2011 |
20120116049 | PURIFICATION OF A CONVENTIONAL POLYMER FLOW CONTAMINATED WITH PLA - Method for purifying a conventional polymer stream (PE, PP, PET, PVC, etc.) contaminated with not more than 50% PLA, comprising steps for the suspension of the polymer with solubilisation of the PLA fraction and the recovery of the purified polymer after separation. | 05-10-2012 |
20120165554 | METHOD FOR STEREOSPECIFICALLY RECYCLING A PLA POLYMER MIXTURE - The present invention relates to a method for the stereospecific chemical recycling of a mixture of polymers based on polylactic acid PLA, in order to reform the monomer thereof or one of the derivatives thereof. The latter may enter the traditional lactate market or once again serve as a raw material for synthesising PLA. | 06-28-2012 |