摘要:
A calendar spread futures contract is a forward contract on the intermonth spread of futures contracts. The calendar spread futures contract can be independently traded and accounted for independent of the traditional roll periods of the complementary futures contracts. An open interest holder can hedge against price volatility in the related futures contracts that may occur prior to or during the roll period. In other words, the calendar spread futures contract locks in the current spread between the front-month contract and the first-deferred contract. Buying a calendar spread futures control is equivalent to buying the spread difference between the expiring contract and the second expiry. Selling a calendar spread futures contract is equivalent to selling the spread difference between the expiring contract and the second expiry.
摘要:
A method for removing one or more fluorinated alkenes from a fluid comprises the step of contacting the fluid with an N-, S-, or P-containing nucleophile for a time sufficient to form an N-, S-, or P-containing nucleophile-fluoroalkene adduct. The nucleophile, and therefore the adduct, can be covalently bonded, coated or sorbed to a particulate support which can be enmeshed in a porous, fibrous web. In a preferred embodiment the fluorinated alkene can have the formula wherein A=F or Rf; X=H, F, Cl, Rf, or YRf; Z= H, F, Cl, or Rf; and Y=O, N, or S; with the proviso that at least one A=F, and at most one of Z and X is H; wherein each Rf is independently selected from the group consisting of highly fluorinated or perfluorinated alkyl groups; and a combination of any two Rf groups can be linked to form a cyclic structure. The Rf alkyl chains may contain from 1-20 carbon atoms, with 1-12 carbon atoms preferred. The Rf alkyl chains may be straight, branched, or cyclic. Preferably, Rf is CF3, C2F5, or C3F7.
摘要翻译:从流体中除去一种或多种氟化烯烃的方法包括使流体与含有N-,S-或P的亲核试剂接触足够时间以形成含有N-,S-或P的亲核试剂的步骤 氟烯烃加成物。 亲核试剂,因此加合物可以共价键合,涂覆或吸附到可以嵌入多孔纤维网中的颗粒载体上。 在优选的实施方案中,氟化烯可以具有式F = F或Rf; X = H,F,Cl,Rf或YRf; Z = H,F,Cl或Rf; 和Y = O,N或S; 条件是至少一个A = F,并且Z和X中至多一个是H; 其中每个Rf独立地选自高氟化或全氟化的烷基; 并且可以连接任何两个Rf基团的组合以形成环状结构.Rf烷基链可以含有1-20个碳原子,优选1-12个碳原子。 Rf烷基链可以是直链,支链或环状的。 Rf优选为CF 3,C 2 F 5或C 3 F 7。
摘要:
A method for removing one or more fluorinated alkenes from a fluid comprises the step of contacting the fluid with an N-, S-, or P-containing nucleophile for a time sufficient to form an N-, S-, or P-containing nucleophile-fluoroalkene adduct. The nucleophile, and therefore the adduct, can be covalently bonded, coated or sorbed to a particulate support which can be enmeshed in a porous, fibrous web. In a preferred embodiment the fluorinated alkene can have the formula ##STR1## wherein A=F or R.sub.f ; X=H, F, Cl, R.sub.f, or YR.sub.f ; Z=H, F, Cl, or R.sub.f ; and Y=O, N, or S; with the proviso that at least one A=F, and at most one of Z and X is H; wherein each R.sub.f is independently selected from the group consisting of highly fluorinated or perfluorinated alkyl groups; and a combination of any two R.sub.f groups can be linked to form a cyclic structure. The R.sub.f alkyl chains may contain from 1-20 carbon atoms, with 1-12 carbon atoms preferred. The R.sub.f alkyl chains may be straight, branched, or cyclic. Preferably, R.sub.f is CF.sub.3, C.sub.2 F.sub.5, or C.sub.3 F.sub.7.
摘要翻译:从流体中除去一种或多种氟化烯烃的方法包括使流体与含有N-,S-或P的亲核试剂接触足够时间以形成含有N-,S-或P的亲核试剂的步骤 氟烯烃加成物。 亲核试剂,因此加合物可以共价键合,涂覆或吸附到可以嵌入多孔纤维网中的颗粒载体上。 在优选的实施方案中,氟化烯可以具有下式:其中A = F或Rf; X = H,F,Cl,Rf或YRf; Z = H,F,Cl或Rf; 和Y = O,N或S; 条件是至少一个A = F,并且Z和X中至多一个是H; 其中每个Rf独立地选自高氟化或全氟化的烷基; 并且任何两个Rf基团的组合可以连接形成环状结构。 Rf烷基链可以含1-20个碳原子,优选1-12个碳原子。 Rf烷基链可以是直链,支链或环状的。 Rf优选为CF 3,C 2 F 5或C 3 F 7。
摘要:
A calendar spread futures contract is a forward contract on the intermonth spread of futures contracts. The calendar spread futures contract can be independently traded and accounted for independent of the traditional roll periods of the complementary futures contracts. An open interest holder can hedge against price volatility in the related futures contracts that may occur prior to or during the roll period. In other words, the calendar spread futures contract locks in the current spread between the front-month contract and the first-deferred contract. Buying a calendar spread futures control is equivalent to buying the spread difference between the expiring contract and the second expiry. Selling a calendar spread futures contract is equivalent to selling the spread difference between the expiring contract and the second expiry.
摘要:
A futures contract in accordance with the principles of the present invention is a cash-settled correspondent to a physical delivery commodity futures contract that mirrors a physical delivery mechanism utilized to settle the corresponding physical-delivery commodity futures contract. A futures contract of the present invention references a basket of deliverable-grade commodities corresponding to a deliverable basket for a corresponding physical-delivery commodity futures contract. A futures contract of the present invention obeys the same schedule for last trading day and expiration as a corresponding physical delivery commodity futures contract. A futures contract of the present invention has tick sizes that may or may not differ from a corresponding physical delivery commodity futures contract. A futures contract of the present invention converges to a final settlement value equal to a conversion-factor-weighted price of whichever member of the deliverable basket is cheapest to deliver into the corresponding physical delivery commodity futures contract.
摘要:
A method for removing one or more fluorinated alkenes from a fluid comprises the step of contacting the fluid with an N-, S-, or P-containing nucleophile for a time sufficient to form an N-, S-, or P-containing nucleophile-fluoroalkene adduct. The nucleophile, and therefore the adduct, can be covalently bonded, coated or sorbed to a particulate support which can be enmeshed in a porous, fibrous web. In a preferred embodiment the fluorinated alkene can have the formula wherein A=F or Rf; X=H, F, Cl, Rf, or YRf; Z=H, F, Cl, or Rf; and Y=O, N, or S; with the proviso that at least one A=F, and at most one of Z and X is H; wherein each Rf is independently selected from the group consisting of highly fluorinated or perfluorinated alkyl groups; and a combination of any two Rf groups can be linked to form a cyclic structure. The Rf alkyl chains may contain from 1-20 carbon atoms, with 1-12 carbon atoms preferred. The Rf alkyl chains may be straight, branched, or cyclic. Preferably, Rf is CF3, C2F5, or C3F7.
摘要翻译:从流体中除去一种或多种氟化烯烃的方法包括使流体与含有N-,S-或P的亲核试剂接触足够时间以形成含有N-,S-或P的亲核试剂的步骤 氟烯烃加成物。 亲核试剂,因此加合物可以共价键合,涂覆或吸附到可以嵌入多孔纤维网中的颗粒载体上。 在优选的实施方案中,氟化烯可以具有式F = F或Rf; X = H,F,Cl,Rf或YRf; Z = H,F,Cl或Rf; 和Y = O,N或S; 条件是至少一个A = F,并且Z和X中至多一个是H; 其中每个Rf独立地选自高氟化或全氟化的烷基; 并且可以连接任何两个Rf基团的组合以形成环状结构.Rf烷基链可以含有1-20个碳原子,优选1-12个碳原子。 Rf烷基链可以是直链,支链或环状的。 Rf优选为CF 3,C 2 F 5或C 3 F 7。