[특허]Novel precipitated siliceous products and methods for their use and production

[미국특허] Novel precipitated siliceous products and methods for their use and production 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	C09K-003/00 C08K-003/36
출원번호	US-0797271 (1977-05-16)
발명자 / 주소	Wason Satish K. (Havre de Grace MD) Mays Robert K. (Havre de Grace MD)
출원인 / 주소	J. M. Huber Corporation (Locust NJ 02)
인용정보	피인용 횟수 : 19 인용 특허 : 3

초록 ▼

A method for producing a precipitated silicon dioxide having a new combination of physical and chemical properties is disclosed. The pigments are produced by acidulating a solution of an alkali metal silicate with an acid under controlled precipitation conditions. The aqueous reaction medium comprising the precipitated silica is then post-conditioned by introducing a second silicate solution into the reaction vessel and thereafter adding additional acid to react with the said second silicate solution. By varying the amount of the silicate employed in the post-conditioning step, a product is obtained which has a unique combination of physical and chemical properties including reduced wet cake moisture content, high surface areas and oil absorptions, improved surface activity, friability, wetting characteristics, and the like. The product has particular utility for use as a rubber reinforcing agent because of its increased surface activity and oil absorption, etc. The product, however, may be used in paints, paper, detergents, dentifrice compositions, molecular sieves, and polymeric compositions. An unexpected discovery of the invention involves the production of a rubber reinforcing silica which has a decreased wet cake moisture content. In one particularly advantageous embodiment, an adduct material, such as aluminum, is added to control the refractive index and surface area of the product.

대표청구항 ▼

A paint and coating composition having incorporated therewith, as a flatting agent, a finely divided, amorphous, precipitated silicon dioxide having: (a) a wet cake moisture content of from between about 77.9 to 83.5% where it is between about 77.9 to 83.2% in the presence of a metal cation and between about 79.8 to 83.5% in the absence of said metal cation; (b) a structure index of from between about 350 to 505 where it is between about 350 to 495 in the presence of said metal cation and between about 395 to 505 in the absence of said metal cation; (c) an oil absorption of from between about 190 to 212 cc/100 grams where it is between about 193 to 212 cc/100 grams in the presence of said metal cation and between about 190 to 202 cc/100 grams in the absence of said metal cation; (d) a void volume of from between about 3.19 to 4.44 cc Hg/g SiO2 where it is between about 3.19 to 4.44 cc Hg/g SiO2 in the presence of said metal catIon and between about 3.55 to 4.14 cc Hg/g SiO2 in the absence of said metal cation; (e) a BET surface area of from between about 120 to 220 m2/g where it is between about 153 to 220 m2/g in the presence of said metal cation and between about 120 to 153 m2/g in the absence of said metal cation; and (f) a percent friability of from between about 20 to 98% where it is between about 28 to 93% in the presence of said metal cation and between about 20 to 98% in the absence of said metal cation; wherein said silicon dioxide comprises at least 90% SiO2 and said metal cation is selected from the group consisting of aluminum, magnesium, zinc and calcium.

이 특허에 인용된 특허 (3) 인용/피인용 타임라인 분석

Wason Satish K. (Churchville MD), Amorphous precipitated siliceous pigments.
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Wason Satish K. (Havre de Grace MD), Process for producing precipitated thickener silica.
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Turk Gunter (Gross-Auheim DT) Welsch Joseph (Neu-Isenburgh DT), Process of making superfine amorphous high structural silicic acid.
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이 특허를 인용한 특허 (19) 인용/피인용 타임라인 분석

Mansell J. Douglas (Akron OH) Jones Laurence E. (Barberton OH) Johnson Harlan B. (Rittman OH) Krivak Thomas G. (Akron OH) Carson Dennis W. (Lower Burrell PA), Article having a corrosion inhibiting coating.
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Michos, Demetrius; Fruge, Daniel Ray, Composite metal oxide particles and methods of making and using the same.
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Mansell J. Douglas (Akron OH) Jones Laurence E. (Barberton OH) Johnson Harlan B. (Rittman OH) Krivak Thomas G. (Akron OH) Carson Dennis W. (Lower Burrell PA), Corrosion inhibiting pigment.
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Angeletakis Christos, Dental restorative composite.
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Joubert Daniel (Trevoux FRX) Vrisakis Georges (Collonges-Au-Mont-D\Or FRX), Detergent compositions comprised of non-abrasive siliceous scouring agents.
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Chapman, David Monroe; Michos, Demetrius, Formulation suitable for ink receptive coatings.
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Chapman, David Monroe; Michos, Demetrius, Formulation suitable for ink receptive coatings.
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Chapman,David Monroe; Michos,Demetrius, Formulation suitable for ink receptive coatings.
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Chapman, David Monroe, Ink-receptive coatings and recording medium prepared therefrom.
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Kurokawa Akio (Kanagawa JPX) Ifuku Naoyuki (Kanagawa JPX) Seita Kenzo (Kanagawa JPX) Nagata Youzi (Kanagawa JPX), Lightweight paper and process for producing same.
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Wason Satish K. (Havre de Grace MD), Novel precipitated siliceous products and methods for their use and production.
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Angeletakis Christos ; Kobashigawa Alvin I., Optimum particle sized hybrid composite.
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Wagner Melvin P. (Barberton OH) Tultz Joseph P. (Barberton OH) Krivak Thomas G. (Akron OH), Precipitated silica pigment for silicone rubber.
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Johnson Harlan B. (Rittman OH) Krivak Thomas G. (Akron OH) Longhini David A. (Uniontown OH), Preparation of amorphous, precipitated silica and siliceous filler-reinforced microporous polymeric separator.
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Bomal Yves,FRX ; Chevallier Yvonick,FRX ; Cochet Philippe,FRX, Process for the preparation of precipitated silica, new percipitated silicas containing aluminum and their use for the r.
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Bomal Yves,FRX ; Chevallier Yvonick,FRX ; Cochet Philippe,FRX, Process for the preparation of precipitated silica, new precipitated silicas containing aluminium and their use for the reinforcement of elastomers.
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Bomal Yves,FRX ; Chevallier Yvonick,FRX ; Cochet Philippe,FRX, Process for the preparation of precipitated silica, new precipitated silicas containing aluminum and their use for the r.
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Bomal, Yves; Chevallier, Yvonick; Cochet, Philippe, Process for the preparation of precipitated silica, new precipitated silicas containing aluminum and their use for the reinforcement of elastomers.
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Unger Klaus (Seeheim-Jugenheim DEX) Giesche Herbert (Kl.-Winternheim DEX) Kinkel Joachim (Guldental DEX), Spherical SiO₂ particles.
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[미국특허] Novel precipitated siliceous products and methods for their use and production 원문보기

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