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1. WO2020113964 - METHOD FOR PREPARING NANO CALCIUM CARBONATE FOR ENHANCING YIELD OF PVC AUTOMOBILE PRIMER COATING

Publication Number WO/2020/113964
Publication Date 11.06.2020
International Application No. PCT/CN2019/096150
International Filing Date 16.07.2019
IPC
C01F 11/18 2006.01
CCHEMISTRY; METALLURGY
01INORGANIC CHEMISTRY
FCOMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE EARTH METALS
11Compounds of calcium, strontium, or barium
18Carbonates
B82Y 40/00 2011.01
BPERFORMING OPERATIONS; TRANSPORTING
82NANOTECHNOLOGY
YSPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE  OR TREATMENT OF NANOSTRUCTURES
40Manufacture or treatment of nanostructures
C08K 3/26 2006.01
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
KUSE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES AS COMPOUNDING INGREDIENTS
3Use of inorganic substances as compounding ingredients
18Oxygen-containing compounds, e.g. metal carbonyls
24Acids; Salts thereof
26Carbonates; Bicarbonates
C08L 27/06 2006.01
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
27Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers
02not modified by chemical after-treatment
04containing chlorine atoms
06Homopolymers or copolymers of vinyl chloride
CPC
B82Y 40/00
BPERFORMING OPERATIONS; TRANSPORTING
82NANOTECHNOLOGY
YSPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
40Manufacture or treatment of nanostructures
C01F 11/183
CCHEMISTRY; METALLURGY
01INORGANIC CHEMISTRY
FCOMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
11Compounds of calcium, strontium, or barium
18Carbonates
182Preparation of calcium carbonate by carbonation of aqueous solutions and characterised by an additive other than CaCO3-seeds
183the additive being an organic compound
C01P 2004/64
CCHEMISTRY; METALLURGY
01INORGANIC CHEMISTRY
PINDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
2004Particle morphology
60Particles characterised by their size
64Nanometer sized, i.e. from 1-100 nanometer
C08K 2003/265
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
KUse of inorganic or non-macromolecular organic substances as compounding ingredients
3Use of inorganic substances as compounding ingredients
18Oxygen-containing compounds, e.g. metal carbonyls
24Acids; Salts thereof
26Carbonates; Bicarbonates
265Calcium, strontium or barium carbonate
C08K 2201/011
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
KUse of inorganic or non-macromolecular organic substances as compounding ingredients
2201Specific properties of additives
011Nanostructured additives
C08K 3/26
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
KUse of inorganic or non-macromolecular organic substances as compounding ingredients
3Use of inorganic substances as compounding ingredients
18Oxygen-containing compounds, e.g. metal carbonyls
24Acids; Salts thereof
26Carbonates; Bicarbonates
Applicants
  • 东北大学 NORTHEASTERN UNIVERSITY [CN]/[CN]
Inventors
  • 陈晓龙 CHEN, Xiaolong
  • 于福家 YU, Fujia
  • 丛国龙 CONG, Guolong
  • 胡杰 HU, Jie
Agents
  • 沈阳东大知识产权代理有限公司 SHENYANG DONGDA INTELLECTUAL PROPERTY AGENCY CO., LTD
Priority Data
201811485011.806.12.2018CN
Publication Language Chinese (ZH)
Filing Language Chinese (ZH)
Designated States
Title
(EN) METHOD FOR PREPARING NANO CALCIUM CARBONATE FOR ENHANCING YIELD OF PVC AUTOMOBILE PRIMER COATING
(FR) PROCÉDÉ DE PRÉPARATION DE NANO-CARBONATE DE CALCIUM DESTINÉ À AMÉLIORER LE RENDEMENT D'UN REVÊTEMENT D'APPRÊT D'AUTOMOBILE EN PVC
(ZH) 一种PVC汽车底涂胶屈服增强用纳米碳酸钙的制备方法
Abstract
(EN)
Disclosed is a method for preparing nano calcium carbonate for enhancing the yield of a PVC automobile primer coating. The method is carried out following the steps of (1) calcining limestone and crushing same to make fine particles; adding hot water for digestion; (2) sieving same to make an emulsion; (3) after having been diluted with water, placing same into a micro-bubble type ultrafine calcium carbonate synthesis reactor, at a temperature of ≤ 30ºC; (4) introducing a mixed gas under stirring; adding a crystal thixotropic modifier when the conductivity first reduces to valley bottom and then rises again; leaving same to stand when the conductivity rises to an initial value; and then stirring again and introducing a gas to pH 7; (5) placing same into a reaction kettle and heating and maintaining the temperature, followed by adding a surface thixotropic modifier and stirring uniformly; and (6) filtering, drying and crushing same. The product obtained by the method of the present invention can effectively increase the yield value of rubber articles under the same viscosity.
(FR)
L'invention concerne un procédé de préparation de nano-carbonate de calcium permettant d'améliorer le rendement d'un revêtement d'apprêt d'automobile en PVC. Le procédé est mis en œuvre en suivant les étapes suivantes consistant (1) à calciner du calcaire et à le broyer afin de fabriquer de fines particules ; à ajouter de l'eau chaude permettant la digestion ; (2) à tamiser ces dernières afin de provoquer une émulsion ; (3) après les avoir diluées avec de l'eau, à les introduire dans un réacteur de synthèse de carbonate de calcium ultrafin de type à micro-bulles, à une température de ≤ 30 °C ; (4) à introduire un gaz mixte sous agitation ; à ajouter un modificateur thixotrope cristallin lorsque la conductivité diminue tout d'abord jusqu'au fond de creux, puis remonte à nouveau ; à laisser ce dernier au repos lorsque la conductivité augmente jusqu'à une valeur initiale ; puis à agiter à nouveau et à introduire un gaz à un pH 7 ; (5) à introduire ce dernier dans une bouilloire de réaction et à chauffer et à maintenir la température, suivi de l'ajout d'un modificateur de surface thixotrope et à agiter de manière uniforme ; et (6) à filtrer, à sécher et à broyer le produit. Le produit obtenu par le procédé de la présente invention permet d'augmenter efficacement la valeur de rendement d'articles en caoutchouc de la même viscosité.
(ZH)
一种PVC汽车底涂胶屈服增强用纳米碳酸钙的制备方法,按以下步骤进行:(1)将石灰石煅烧破碎制成细粒;加入热水进行消化;(2)过筛制成乳液;(3)加水稀释后,在温度≤30℃时,置于微泡式超微细碳酸钙合成反应器内;(4)搅拌时通入混合气体;电导率第一次下降至谷底后回升时,加入晶体触变化改性剂;电导率回升至初始值时静置;再搅拌时通气至pH为7;(5)置于反应釜加热保温后。加入表面触变化改性剂搅拌均匀;(6)过滤烘干破碎。本发明的方法获得的产品在粘度相同情况下,能够有效提高胶制品的屈服值。
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