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1. 发明授权

US5221460A Continuous autorefrigerative dewaxing crystallization using a centrifuge 失效
标题翻译：使用离心机连续自动进样结晶
公开(公告)号：US5221460A
公开(公告)日：1993-06-22
申请号：US704145
申请日：1991-05-22
申请人： Abraham R. DeKraker
发明人： Abraham R. DeKraker
IPC分类号： C10G73/06 , B01D9/00 , C10G73/32
CPC分类号： C10G73/32 , B01D9/0009
摘要： Hydrocarbon dewaxing using propane or other autorefrigerative dewaxing solvent can be practiced in a centrifuge wherein the centrifugal force generated in the centrifuge produces a pressure gradient permitting dewaxing to be practiced on a continuous basis.
摘要翻译：使用丙烷或其他自动制冷脱蜡溶剂的烃脱蜡可以在离心机中实施，其中在离心机中产生的离心力产生压力梯度，允许在连续的基础上进行脱蜡。

2. 发明授权

US4594142A Dewaxing waxy hydrocarbon oils using di-alkyl fumarate-vinyl laurate copolymer dewaxing aids 失效
标题翻译：使用富马酸二烷基酯 - 月桂酸乙烯酯共聚物脱蜡助剂来脱蜡蜡质油
公开(公告)号：US4594142A
公开(公告)日：1986-06-10
申请号：US727021
申请日：1985-04-25
申请人： Biddanda U. Achia , Abraham R. DeKraker , Albert Rossi
发明人： Biddanda U. Achia , Abraham R. DeKraker , Albert Rossi
IPC分类号： C10G73/02 , C10G73/04 , C10G73/12
CPC分类号： C10G73/04
摘要： A solvent dewaxing process is described comprising mixing a waxy hydrocarbon oil, preferably a waxy petroleum oil, most preferably a waxy lube or specialties oil, with dewaxing solvent and a dewaxing aid comprising (A) a dialkylfumarate-vinyl laurate copolymer and (B) a wax-naphthalene condensation copolymer, a dialkyl fumarate-vinyl acetate copolymer or an ethylene vinyl acetate copolymer and chilling the mixture to yield a slurry comprising solid particles of precipitated wax and a solution of dewaxed oil and solvent and separating said solid wax from dewaxed oil solution.
摘要翻译：描述了溶剂脱蜡方法，其包括将蜡质烃油，优选石蜡油，最优选蜡状润滑剂或特种油与脱蜡溶剂和脱蜡助剂混合，所述脱蜡助剂包含（A）富马酸二乙酯 - 月桂酸乙烯酯共聚物和（B）蜡 - 萘缩合共聚物，富马酸二乙酯 - 乙酸乙烯酯共聚物或乙烯 - 乙酸乙烯酯共聚物，并冷却该混合物以产生包含沉淀蜡的固体颗粒和脱蜡油和溶剂的溶液的浆料，并将所述固体蜡与脱蜡油溶液。

3. 发明授权

US4956492A Dialkyl fumarate - vinyl acetate copolymers useful as dewaxing aids 失效
标题翻译：用作脱蜡助剂的富马酸二烷基酯 - 乙酸乙烯酯共聚物
公开(公告)号：US4956492A
公开(公告)日：1990-09-11
申请号：US944545
申请日：1986-12-19
申请人： Abraham R. Dekraker , David J. Martella
发明人： Abraham R. Dekraker , David J. Martella
IPC分类号： C08F218/08 , C08F222/10 , C10G73/04
CPC分类号： C10G73/04 , C08F218/08 , C08F222/10
摘要： Copolymers of dialkyl fumarate and vinyl acetate having Specific Viscosities of at least 2.5 at 2% polymer concentration in xylene at 40.degree. C., and wherein at least 50 wt. % of said alkyl groups are C.sub.20 to C.sub.24, are useful as dewaxing aids, particularly in propane dewaxing.
摘要翻译：富马酸二乙酯和乙酸乙烯酯的共聚物，其在2％聚合物浓度下在40℃下在二甲苯中具有至少2.5的比粘度，并且其中至少50wt。所述烷基的％为C20至C24，可用作脱蜡助剂，特别是在丙烷脱蜡中。

4. 发明授权

US4670130A The use of dialkyl fumarate-vinyl acetate copolymers as dewaxing aids 失效
标题翻译：使用富马酸二乙酯 - 乙酸乙烯酯共聚物作脱蜡助剂
公开(公告)号：US4670130A
公开(公告)日：1987-06-02
申请号：US589536
申请日：1984-03-14
申请人： Abraham R. Dekraker , David J. Martella
发明人： Abraham R. Dekraker , David J. Martella
IPC分类号： C08F218/00 , C08F218/02 , C08F218/08 , C08F220/00 , C08F220/10 , C08F222/10 , C08F222/14 , C10G73/04
CPC分类号： C08F218/08 , C08F222/10 , C10G73/04
摘要： Copolymers of dialkyl fumarate and vinyl acetate having Specific Viscosities of at least 2.5 at 2% polymer concentration in xylene at 40.degree. C., and wherein at least 50 wt. % of said alkyl groups are C.sub.20 to C.sub.24, are useful as dewaxing aids, particularly in propane dewaxing.
摘要翻译：富马酸二乙酯和乙酸乙烯酯的共聚物，其在2％聚合物浓度下在40℃下在二甲苯中具有至少2.5的比粘度，并且其中至少50wt。所述烷基的％为C20至C24，可用作脱蜡助剂，特别是在丙烷脱蜡中。

5. 发明授权

US5400618A Integrated batch auto-refrigerative dewaxing employing thermocompressors 失效
标题翻译：采用热压机的集成批量自动制冷脱蜡
公开(公告)号：US5400618A
公开(公告)日：1995-03-28
申请号：US143426
申请日：1993-10-26
申请人： Abraham R. DeKraker
发明人： Abraham R. DeKraker
IPC分类号： B01D9/00 , C10G73/32 , B01D9/04 , C02F1/22
CPC分类号： C10G73/32 , B01D9/0009
摘要： Batch auto-refrigerative dewaxing processes employing at least two batch chilling vessels can be improved by integrating the batch auto-refrigerative dewaxing chilling cycles of the chilling vessels so as to have their cycles of operation overlap and use thermocompressors to recover the energy of the hot, high pressure cycle stream of one vessel by operation on the cooler, low pressure cycle stream of the other vessel to increase the pressure of said low pressure cycle stream. The overlap operation of the multiple batch chillers integrated through the thermocompressor will also permit running the cool, low pressure cycle to a pressure even lower than atmospheric without inleakage of air because of the vacuum effect generated by the hot, higher pressure stream running through the thermocompressor. Autorefrigerative dewaxing employs liquified normally gaseous solvents as the chilling solvents such as C.sub.3 -C.sub.4 alkanes/alkenes e.g. propane, propylene, butane, butylene and mixtures thereof.
摘要翻译：通过整合冷冻容器的批量自动制冷脱蜡冷冻循环，使其具有操作重复循环并使用热压机来回收热，冷热脱蜡的能量，可以提高采用至少两批批冷却容器的批量自动制冷脱蜡方法，一个容器的高压循环流通过在另一个容器的较冷的低压循环流上操作来增加所述低压循环流的压力。通过热压缩机集成的多批冷水机组的重叠操作也将允许将冷却的低压循环运行到甚至低于大气压的气压，而不会因空气而泄漏，这是由于通过热压机的热的较高压力流产生的真空效应。自动制冷脱蜡使用液化的通常气态溶剂作为冷却溶剂，例如C 3 -C 4烷烃/烯烃。丙烷，丙烯，丁烷，丁烯及其混合物。

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