An air management system component containing a crosslinked fluoroelastomer layer obtained by crosslinking a fluoroelastomer composition that contains a peroxide-crosslinkable fluoroelastomer and a hydrotalcite compound. Also disclosed is the fluoroelastomer composition.

An air management system component containing a crosslinked fluoroelastomer layer obtained by crosslinking a fluoroelastomer composition that contains a peroxide-crosslinkable fluoroelastomer and a hydrotalcite compound. Also disclosed is the fluoroelastomer composition.

The present invention relates to a polymer alloy comprising a sulphur-containing aromatic polymer and at least one fluoroelastomer, which has improved dispersibility and improved mechanical properties. The invention also relates to a process for the preparation of said polymer alloy and to an article comprising the same.

The present invention relates to a polymer alloy comprising a sulphur-containing aromatic polymer and at least one fluoroelastomer, which has improved dispersibility and improved mechanical properties. The invention also relates to a process for the preparation of said polymer alloy and to an article comprising the same.

A curable composition capable of being cured at a low temperature of from room temperature to 150 C. is provided. The curable composition comprises a fluorinated polymer containing at least three functional groups represented by the following formula (F) and at least one curing agent selected from the group consisting of an isocyanate-type curing agent, a blocked isocyanate-type curing agent and an amino resin-type curing agent:
R.sup.f1COZ.sup.1(F)
(in the formula (1), R.sup.f1 is a fluoroalkylene group, or a fluoroalkylene group with at least two carbon atoms having an etheric oxygen atom between carbon-carbon atoms, Z.sup.1 is NR.sup.1NR.sup.2H or NR.sup.3OR.sup.4, and R.sup.1, R.sup.2, R.sup.3 and R.sup.4 are each independently a hydrogen atom or an alkyl group.)

A curable composition capable of being cured at a low temperature of from room temperature to 150 C. is provided. The curable composition comprises a fluorinated polymer containing at least three functional groups represented by the following formula (F) and at least one curing agent selected from the group consisting of an isocyanate-type curing agent, a blocked isocyanate-type curing agent and an amino resin-type curing agent:
R.sup.f1COZ.sup.1(F)
(in the formula (1), R.sup.f1 is a fluoroalkylene group, or a fluoroalkylene group with at least two carbon atoms having an etheric oxygen atom between carbon-carbon atoms, Z.sup.1 is NR.sup.1NR.sup.2H or NR.sup.3OR.sup.4, and R.sup.1, R.sup.2, R.sup.3 and R.sup.4 are each independently a hydrogen atom or an alkyl group.)

In a first aspect, the present invention relates to a process improvement additive suitable for polymer processing, wherein this process improvement additive comprises a carrier polymer, a binding component and one or more fluoropolymers and wherein this process improvement additive further comprises one or more zeolites. In a second aspect, the present invention relates to a method for processing a polymer, wherein a process improvement additive is added to the polymer prior to processing and wherein this process improvement additive comprises a carrier polymer, a binding component, one or more fluoropolymers and one or more zeolites.

In a first aspect, the present invention relates to a process improvement additive suitable for polymer processing, wherein this process improvement additive comprises a carrier polymer, a binding component and one or more fluoropolymers and wherein this process improvement additive further comprises one or more zeolites. In a second aspect, the present invention relates to a method for processing a polymer, wherein a process improvement additive is added to the polymer prior to processing and wherein this process improvement additive comprises a carrier polymer, a binding component, one or more fluoropolymers and one or more zeolites.

The invention pertains to a polyunsaturated compound having formula (I) [compound (DAIC-PFPE)]: T.sup.A-OR.sub.f-T.sup.A wherein: R.sub.f is (per)fluoropolyoxyalkylene chain [chain (R.sub.f)] comprising recurring units having at least one catenary ether bond and Sat least one fluorocarbon moiety; T.sup.A and T.sup.A, equal to or different from each other, are selected from the group consisting of: (i) C.sub.1-C.sub.24 (hydro)(fluoro)carbon groups, possibly comprising one or more than one of H, O, and Cl; and (ii) (hydro)(fluoro)carbon group comprising at least one diallylisocyanurate group of formula (A) wherein each of R.sup.1, R.sup.2, R.sup.3, R.sup.4, R.sup.5, and R.sup.6 is, independently, a hydrogen atom or a C.sub.1-C.sub.3 hydrocarbon group, preferably a hydrogen atom (group T.sup.DAIC), with the provisio that at least one of T.sup.A and T.sup.A is a group T.sup.DAIC, to a process for its manufacture and its use for curing fluoroelastomers, to fluoroelastomer compositions comprising the same, as well as to a process for producing fluororubber mouldings therefrom.

##STR00001##

The invention pertains to a polyunsaturated compound having formula (I) [compound (DAIC-PFPE)]: T.sup.A-OR.sub.f-T.sup.A wherein: R.sub.f is (per)fluoropolyoxyalkylene chain [chain (R.sub.f)] comprising recurring units having at least one catenary ether bond and Sat least one fluorocarbon moiety; T.sup.A and T.sup.A, equal to or different from each other, are selected from the group consisting of: (i) C.sub.1-C.sub.24 (hydro)(fluoro)carbon groups, possibly comprising one or more than one of H, O, and Cl; and (ii) (hydro)(fluoro)carbon group comprising at least one diallylisocyanurate group of formula (A) wherein each of R.sup.1, R.sup.2, R.sup.3, R.sup.4, R.sup.5, and R.sup.6 is, independently, a hydrogen atom or a C.sub.1-C.sub.3 hydrocarbon group, preferably a hydrogen atom (group T.sup.DAIC), with the provisio that at least one of T.sup.A and T.sup.A is a group T.sup.DAIC, to a process for its manufacture and its use for curing fluoroelastomers, to fluoroelastomer compositions comprising the same, as well as to a process for producing fluororubber mouldings therefrom.

##STR00001##