NOVEL METHOD FOR PREPARING PRECIPITATED SILICAS NOVEL PRECIPITATED SILICAS AND USES THEREOF PARTICULARLY FOR POLYMER REINFORCEMENT

• Main Authors: BOIVIN CEDRIC, GUY LAURENT, PERIN ERIC, LAMIRI KILANI
• Format: Patent
• Language: English; Korean
• Published: 04.11.2016
• Subjects: ADHESIVES; CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOUNDS THEREOF; DEVICES OR ARRANGEMENTS RELATED TO TYRES; DYES; INORGANIC CHEMISTRY; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL RESINS; NON-METALLIC ELEMENTS; ORGANIC MACROMOLECULAR COMPOUNDS; PAINTS; PERFORMING OPERATIONS; POLISHES; PREPARATION OF CARBON BLACK; REPAIRING, OR CONNECTING VALVES TO, INFLATABLE ELASTIC BODIESIN GENERAL; THEIR PREPARATION OR CHEMICAL WORKING-UP; TRANSPORTING; TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS,TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES; TYRE CHANGING OR REPAIRING; TYRE INFLATION; USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS; VEHICLE TYRES; VEHICLES IN GENERAL

본 발명은 침강 실리카를 제조하기 위한 신규 방법에 관한 것으로서, 여기서 실리케이트는 산성화제와 반응하여 침강 실리카 현탁액이 제조되고; 상기 침강 실리카 현탁액은 여과되어 필터 케이크가 제조되며; 상기 필터 케이크에 붕해 공정이 수행되고; 붕해 공정 후, 건조 단계가 일어나며, 붕해 공정이 진행되는 동안이나 그후에 적어도 1 종의 폴리카복실산이 필터 케이크에 첨가되는 것을 특징으로 한다. 본 발명은 또한 신규 침강 실리카 및 이의 용도에 관한 것이다. The invention relates to a process for preparing a precipitated silica, to precipitated silicas, and to uses thereof. The process of the invention generally includes reacting a silicate with an acidifying agent, so as to obtain a suspension of precipitated silica; filtering the precipitated silica to obtain a filter cake; subjecting the filter cake to a liquefaction operation to form a second filter cake; and drying the second filter cake. In the process of the invention, at least one polycarboxylic acid is added to the filter cake, during or after the liquefaction operation