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公开(公告)号：DE59000043D1
公开(公告)日：1992-03-26
申请号：DE59000043
申请日：1990-04-30
Applicant: BASF AG
Inventor： WOLFF BERNARDO DR , MIELKE MANFRED , SEYBOLD GUENTHER DR , OSTERTAG WERNER DR , FRICKE JOCHEN PROF DR , CAPS ROLAND DR
IPC: C01B33/155 , C01B33/158 , C04B14/06 , C04B30/00 , F16L59/00 , F16L59/02 , F16L59/08
Abstract: The material is obtainable by a) reacting an aqueous dispersion of waterglass and a pigment with a strong acid and/or waterglass with a pigment-containing strong acid to give a pigment-containing silica hydrogel, the pigment being characterised in that it scatters, absorbs or reflects infrared radiation of wavelength 3 - 10 mu m, b) substantially freeing the pigment-containing silica hydrogel thus obtained from ionic constituents by washing out with water, c) displacing the water present in the hydrogel by means of a low- boiling liquid which is inert to the pigment-containing silica gel, d) heating the liquid-containing silica gel thus obtained with complete covering with the liquid to supercritical conditions and e) subsequently removing the liquid from the solid by flash evaporation at supercritical temperature.
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公开(公告)号：AT178922T
公开(公告)日：1999-04-15
申请号：AT95116927
申请日：1995-10-27
Applicant: BASF AG
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公开(公告)号：DE4439458A1
公开(公告)日：1996-05-09
申请号：DE4439458
申请日：1994-11-04
Applicant: BASF AG
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公开(公告)号：DE4236579A1
公开(公告)日：1993-12-09
申请号：DE4236579
申请日：1992-10-29
Applicant: BASF AG
Inventor： ALICKE GERHARD , WEILBACHER MANFRED DR , WOLFF BERNARDO DR , HEINEN HARTMUT DR , DIETZEN FRANZ-JOSEF DR , WEBER REINHOLD , HAHN MANFRED
Abstract: A process is disclosed for manufacturing slabs of cellular material having at least 20 mm thickness and at least 50 cm cross-section by extrusion of a mixture of a styrene polymer and 1 to 10% by weight of a foaming agent, in relation to the styrene polymer. The process is characterized in that the foaming agent contains at least one ether from the group of the dimethyl, methylethyl and methylvinyl ethers.
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公开(公告)号：ES2083504T3
公开(公告)日：1996-04-16
申请号：ES91119991
申请日：1991-11-23
Applicant: BASF AG
Inventor： WOLFF BERNARDO DR , HOHWILLER FRIEDER , SEYBOLD GUENTHER DR
Abstract: A composite foam of low thermal conductivity comprises a) 20-80% by volume of silica aerogel particles having a mean diameter of from 0.1 to 20 mm and a density of from 0.08 to 0.40 g/cm3, b) 20-80% by volume of a styrene polymer foam which surrounds the particles of component a) and binds them to one another and has a density of from 0.01 to 0.15 g/cm3, and, if desired, c) conventional additives in effective amounts.
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Patent Agency Ranking
公开(公告)号：DE58902064D1
公开(公告)日：1992-09-24
申请号：DE58902064
申请日：1989-04-29
Applicant: BASF AG
Inventor： WOLFF BERNARDO DR , SEYBOLD GUENTHER DR , KRUECKAU FRITZ ERNST
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公开(公告)号：ES2083504T5
公开(公告)日：1999-07-01
申请号：ES91119991
申请日：1991-11-23
Applicant: BASF AG
Inventor： WOLFF BERNARDO DR , HOHWILLER FRIEDER , SEYBOLD GUENTHER DR
Abstract: A composite foam of low thermal conductivity comprises a) 20-80% by volume of silica aerogel particles having a mean diameter of from 0.1 to 20 mm and a density of from 0.08 to 0.40 g/cm3, b) 20-80% by volume of a styrene polymer foam which surrounds the particles of component a) and binds them to one another and has a density of from 0.01 to 0.15 g/cm3, and, if desired, c) conventional additives in effective amounts.
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公开(公告)号：DE59107464D1
公开(公告)日：1996-04-04
申请号：DE59107464
申请日：1991-11-23
Applicant: BASF AG
Inventor： WOLFF BERNARDO DR , HOHWILLER FRIEDER , SEYBOLD GUENTHER DR
Abstract: A composite foam of low thermal conductivity comprises a) 20-80% by volume of silica aerogel particles having a mean diameter of from 0.1 to 20 mm and a density of from 0.08 to 0.40 g/cm3, b) 20-80% by volume of a styrene polymer foam which surrounds the particles of component a) and binds them to one another and has a density of from 0.01 to 0.15 g/cm3, and, if desired, c) conventional additives in effective amounts.
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公开(公告)号：AT134682T
公开(公告)日：1996-03-15
申请号：AT91119991
申请日：1991-11-23
Applicant: BASF AG
Inventor： WOLFF BERNARDO DR , HOHWILLER FRIEDER , SEYBOLD GUENTHER DR
Abstract: A composite foam of low thermal conductivity comprises a) 20-80% by volume of silica aerogel particles having a mean diameter of from 0.1 to 20 mm and a density of from 0.08 to 0.40 g/cm3, b) 20-80% by volume of a styrene polymer foam which surrounds the particles of component a) and binds them to one another and has a density of from 0.01 to 0.15 g/cm3, and, if desired, c) conventional additives in effective amounts.
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公开(公告)号：DE4402909A1
公开(公告)日：1995-08-03
申请号：DE4402909
申请日：1994-02-01
Applicant: BASF AG
Inventor： ALICKE GERHARD , DIETZEN FRANZ-JOSEF DR , HAHN KLAUS DR , WOLFF BERNARDO DR , WEBER REINHOLD
Abstract: Extruded closed-cell foam panels produced using a halogen-free blowing agent have a min. thickness of 20 mm and cross-section of at least 50 cm2. They have a thermoplastic matrix based on a styrene polymer and opt. additives which are insol. in the matrix and are free from halogenated gases. The novelty is that the matrix has a Vicat softening temp. VST B 50 (DIN 53460) of at most 100 deg C. and melt index MVR 200/5 (DIN 53735) of at least 5 ml/10 min. The prodn. of the boards by extruding a mixt. of plasticised thermoplastic matrix with 1-15 wt.% halogen-free blowing agent and opt. usual additives is also claimed.
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