A method and device for producing a solution of polyphosphoric acid from a feed solution P0 by the wet method is provided. An enriched phosphoric acid solution optionally mixed with a direct feed solution is pulverised in a flame of a combustion chamber in order to form the polyphosphoric acid solution. The combustion gases from the combustion chamber are placed in contact with the feed solution in a gas-acid contactor in order to increase the temperature and the P.sub.2O.sub.5 concentration thereof and thus to form an enriched phosphoric acid solution. A portion of the enriched phosphoric acid solution is conveyed with a flow rate of Qp into the combustion chamber in order to be pulverised in the flame. The rest of the enriched phosphoric acid solution is conveyed into a recirculation loop in order to be reinjected into the gas-acid contactor with a flow rate of Q2. The ratio of Qp/(Qp+Q2) is controlled with a predefined value.

Techniques regarding the synthesis of one or more polymers through one or more ring-opening polymerizations conducted within a flow reactor and facilitated by one or more anionic catalysts are provided. For example, one or more embodiments can comprise a method, which can comprise polymerizing, via a ring-opening polymerization within a flow reactor, a cyclic monomer in the presence of one or more anionic organocatalysts.

Techniques regarding the synthesis of one or more polymers through one or more ring-opening polymerizations conducted within a flow reactor and facilitated by one or more anionic catalysts are provided. For example, one or more embodiments can comprise a method, which can comprise polymerizing, via a ring-opening polymerization within a flow reactor, a cyclic monomer in the presence of one or more anionic organocatalysts.

A cross-linkable flame retardant material includes a terminal furan-containing flame retardant moiety. The terminal furan-containing flame retardant moiety includes a furan moiety bonded to a phosphorus moiety via a phosphoryl linkage or via a phosphinyl linkage.

Lithium battery electrolyte materials comprising fluorinated phosphonates and having a polymer structure defined by:

##STR00001##

where R.sup.1 is CF.sub.3, (CF.sub.2).sub.nCF.sub.3 and n is an integer ranging from 1 to 10, perfluoropolyether (PFPE), polyvinylidene fluoride (PVDF), polytetrafluoroethylene (PTFE), fluorinated ethylene propylene (FEP), ethylene fluorinated ethylene propylene (EFEP), or polyethylene tetrafluoroethylene (ETFE) and R.sup.2 is (CF.sub.2).sub.n and n is an integer ranging from 1 to 10, perfluoropolyether (PFPE), polyvinylidene fluoride (PVDF), polytetrafluoroethylene (PTFE), fluorinated ethylene propylene (FEP), ethylene fluorinated ethylene propylene (EFEP), or polyethylene tetrafluoroethylene (ETFE).

The invention pertains generally to a polymer composition comprising a certain secondary polymeric polyphosphite anti-oxidant, that can also act as a polymer processing aid alone or in combination with another polymer processing aid.

The invention pertains generally to a polymer composition comprising a certain secondary polymeric polyphosphite anti-oxidant, that can also act as a polymer processing aid alone or in combination with another polymer processing aid.

The present invention provides a cell culture container for long term non-adherent cell culture which comprises having a coating containing a copolymer which is a copolymer having a recurring unit which contains a group represented by the following formula (a), a recurring unit which contains a group represented by the following formula (b), and a recurring unit which contains a group represented by the following formula (c), and a molar ratio of the recurring unit which contains a group represented by the formula (c) being 1 to 50 mol % based on the whole copolymer, provided with at least a part of a surface thereof

##STR00001## [wherein, U.sup.a1, U.sup.a2, U.sup.b1, U.sup.b2 and U.sup.b3, R.sup.c, and An.sup. are as defined in the specification and Claims.]

A structure of phosphorous-containing functionalized poly(arylene ether), a preparation method thereof, and a composition prepared therefrom are provided. The curable (cross-linkable) composition includes an unsaturated monomer and a phosphorous-containing functionalized poly(arylene ether) having a polymerizable group and a molecular weight between 500 and 20,000. The composition provides excellent fluidity and fast curing rate. After curing, the composition exhibits excellent low dielectric coefficient and dielectric loss, high heat resistance and flame retardancy. It is suitable for prepregs, laminated sheets for printed circuits or the like.

A structure of phosphorous-containing functionalized poly(arylene ether), a preparation method thereof, and a composition prepared therefrom are provided. The curable (cross-linkable) composition includes an unsaturated monomer and a phosphorous-containing functionalized poly(arylene ether) having a polymerizable group and a molecular weight between 500 and 20,000. The composition provides excellent fluidity and fast curing rate. After curing, the composition exhibits excellent low dielectric coefficient and dielectric loss, high heat resistance and flame retardancy. It is suitable for prepregs, laminated sheets for printed circuits or the like.