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公开(公告)号：ES2062265T3
公开(公告)日：1994-12-16
申请号：ES90121605
申请日：1990-11-12
Applicant: BASF AG
Inventor： GROPPER HANS , FUNK GUIDO , KOLK ERICH , OEDER DIETER
Abstract: The novel catalyst for the preparation of high-molecular-weight homopolymers or copolymers of ethene is obtainable by (1) treating a silicon dioxide-based support with (2) chromium trioxide or a chromium compound which can be converted into chromium dioxide under the conditions of step (3), and then (3) heating the resultant intermediate in an oxygen-containing stream of gas, where the support (1) is a specific silicic acid xerogel obtainable by extracting a maximum of 30% of water from a silicic acid hydrogel by means of alkanols, alkanones or mixtures thereof, and subsequently drying, comminuting and fractionating the product.
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Patent Agency Ranking2.发明专利
公开(公告)号：CA1222350A
公开(公告)日：1987-05-26
申请号：CA390931
申请日：1981-11-25
Applicant: BASF AG
Inventor： OEDER DIETER , DIETSCHE WOLFRAM , WEISS STEFAN , ZIEGLER WALTER , KUEPPERS PETER , HETTCHE ALBERT
IPC: C08F2/00 , C08F2/38 , C08F210/00 , C08F210/02 , C09G1/10 , C08F220/06
Abstract: EMULSIFIABLE HARD WAXES CONSISTING OF COPOLYMERS OF ETHYLENE WITH UNSATURATED CARBOXYLIC ACIDS Water-emulsifiable hard waxes consisting of homogeneous copolymers of ethylene with from 1 to 8 percent by weight, based on copolymer, of .alpha.-olefinically unsaturated C3-C8-carboxylic acids and having the following characteristic data: Melt index = 1,500 to 20 MFI units, measured at 160.degree.C under 325 g load Acid number = 10 to 60 H?ppler hardness = 400 to 800 bar, measured at 23.degree.C by DGF standard method M-III 9a (57).
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公开(公告)号：DE3938723A1
公开(公告)日：1991-05-29
申请号：DE3938723
申请日：1989-11-23
Applicant: BASF AG
Inventor： GROPPER HANS , FUNK GUIDO , KOLK ERICH , OEDER DIETER
Abstract: The novel catalyst for the preparation of high-molecular-weight homopolymers or copolymers of ethene is obtainable by (1) treating a silicon dioxide-based support with (2) chromium trioxide or a chromium compound which can be converted into chromium dioxide under the conditions of step (3), and then (3) heating the resultant intermediate in an oxygen-containing stream of gas, where the support (1) is a specific silicic acid xerogel obtainable by extracting a maximum of 30% of water from a silicic acid hydrogel by means of alkanols, alkanones or mixtures thereof, and subsequently drying, comminuting and fractionating the product.
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公开(公告)号：CA1077195A
公开(公告)日：1980-05-06
申请号：CA269026
申请日：1976-12-31
Applicant: BASF AG
Inventor： OEDER DIETER , GROPPER HANS , URBAN FRIEDRICH
Abstract: Ethylene polymers are manufactured by polymerizing ethylene under high pressure at high temperatures in an autoclave reactor. The heat of reaction generated by the polymerization is removed, within the reactor, by a cooling system in which the cooling medium is ethylene; the pressure of the monomer in the cooling system should differ by from 0 to 200 bars from the pressure prevailing in the polymerization system, and the temperature of the monomer on entering the cooling system is at least 40.degree.C lower than the temperature prevailing in the autoclave. The process permits an increase in the conversion achieved in the polymerization reaction.
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公开(公告)号：DE59005190D1
公开(公告)日：1994-05-05
申请号：DE59005190
申请日：1990-11-12
Applicant: BASF AG
Inventor： GROPPER HANS , FUNK GUIDO , KOLK ERICH , OEDER DIETER
Abstract: The novel catalyst for the preparation of high-molecular-weight homopolymers or copolymers of ethene is obtainable by (1) treating a silicon dioxide-based support with (2) chromium trioxide or a chromium compound which can be converted into chromium dioxide under the conditions of step (3), and then (3) heating the resultant intermediate in an oxygen-containing stream of gas, where the support (1) is a specific silicic acid xerogel obtainable by extracting a maximum of 30% of water from a silicic acid hydrogel by means of alkanols, alkanones or mixtures thereof, and subsequently drying, comminuting and fractionating the product.
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公开(公告)号：AT103615T
公开(公告)日：1994-04-15
申请号：AT90121605
申请日：1990-11-12
Applicant: BASF AG
Inventor： GROPPER HANS , FUNK GUIDO , KOLK ERICH , OEDER DIETER
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