Abstract: The invention relates to the use of butyl ionomers or partially halogenated butyl ionomers in reducing a population of and/or preventing accumulation of organisms. The organisms may be bacteria, algae, fungi, mollusca or arthropoda. The invention also relates to coatings for shaped articles comprising the butyl ionomers.

Abstract: A functional macromonomer, which is an isobutylene-rich polymer that homopolymerizes when initiated by a free-radical initiator, is described that has an acrylate moiety substituted by at least one substituent that bears a functional moiety. Methods of making functional macromonomers by ring-opening various anhydrides and methods of curing functional macromonomers are described. Cured products are halo-free thermosets that have only small amounts of initiator-derived byproducts and substantially no residual unreacted functionality, which is beneficial for chemical and physical stability.

Abstract: The invention relates to the use of butyl ionomers or partially halogenated butyl ionomers in reducing a population of and/or preventing accumulation of organisms. The organisms may be bacteria, algae, fungi, mollusca or arthropoda. The invention also relates to coatings for shaped articles comprising the butyl ionomers.

Abstract: Nucleophilic substitution reactions of halogenated polymers and azoles are used to produce derivatives of polyolefins bear pendant azolium ionomers. These uncured ionomers are useful in adhesive, antimicrobial applications, as well as in polymer composites and polymer blends. Furthermore, these azolium ionomers' ion pairs can bear reactive functionality, which provides access to further reactions that were unavailable using previous technology. Advantageously, such reactive ionomer derivatives of polyolefins can be cured by free radical and moisture-curing chemistry that was unaccessible to the halogenated polymer parent material.

Abstract: Nucleophilic substitution reactions of halogenated polymers and cross-linking nucleophiles are used to produce thermoset ionomers. These cured ionomers are useful in adhesive, antimicrobial applications, as well as in polymer composites and polymer blends. Furthermore, these thermoset ionomers' ion pairs can bear reactive functionality, which provides access to further reactions that were unavailable using previous technology.

Abstract: A process is described for isomerizing halogenated butyl rubber from a microstructure that is predominantly exo-methylene (secondary allylic halide) to one that is predominantly endo-halomethyl (primary allylic halide). Isomerized halobutyl rubber is a halobutyl rubber that is more reactive toward a wide range of nucleophiles, thereby supporting more efficient processes for producing a variety of butyl rubber derivatives. The process includes mixing halogenated butyl rubber and a catalytic amount of metal carboxylate and optionally heating to form isomerized halogenated butyl rubber, and may be conducted in the absence or presence of solvent.

Abstract: A polymer is described that is stable in the presence of a free-radical initiator, but which cures when subjected to a small amount of free-radical initiator when in the presence of a co-agent. The polymer's main chain comprises polymerized olefin monomers, isobutylene-co-isoprene, or isobutylene-co-methylstyrene. The polymer's side chains comprise a functionality that crosslinks when subjected to a free-radical initiator in the presence of a co-agent. Suitable co-agents include bis-maleimide. Methods for preparing and for crosslinking such polymers are described. Cured product is halo-free and has low odour.

Abstract: Halide displacement from brominated polyisobutylene-co-isoprene) (MIR) under homogeneous and phase-transfer catalyzed reaction conditions is used to prepare acrylate, styrenic and maleimide functionalized elastomers in high yield. These macro-monomer derivatives cross-link efficiently under peroxide initiation to give high modulus, thermoset products that cannot otherwise be accessed from isobutylene-rich elastomers. The extent of cure scales with content of activated C?C, and can extended by co-oligomerization of pendant unsaturation with that contained within multi-functional co-agents.

Abstract: Nucleophilic substitution reactions of halogenated elastomers and latent curatives are used to produce thermoset derivatives that are easily mixed at conventional compounding temperatures, but cure rapidly at conventional cure temperatures.

Abstract: Mixtures of halogenated elastomers and latent curatives are provided that cure when subjected to sufficient heat to decompose the latent curative. Decomposition products include CO2 and N-nucleophiles, which participate in nucleophilic substitution reactions leading to crosslinking of the elastomers. Transparent thermoset products that were free of voids were produced.

Abstract: Preparation of butyl rubber based graft co-polymers from halobutyl elastomers using phase transfer catalysts in the presence of a solution of an alkali metal salt of an oxygen or sulfur nucleophile that is bound to a polymeric substrate. Graft co-polymers can be produced of a butyl polymer (isobutene-coisoprene) and polymeric substrates such as polyethylene, polypropylene, polystyrene, polybutadiene, polysilanes, polysiloxanes, polyethylene glycol, polyethylene oxide, polyphosphazenes, polyferrocenes or their hybrids.

Abstract: The present invention provides a process for preparing a filled halobutyl elastomer, which includes mixing a halobutyl elastomer with at least one mineral filler and at least one phosphine modifier and optionally curing the filled elastomer with sulfur or other curative systems. Filled halobutyl elastomers prepared according to the present invention possess improved levels of filler dispersion which results in a reduction in the hardness of the compound and an increased tensile strength.

Abstract: A composite closure with a side seal proportioning lip is disclosed, with the closure including an outer plastic closure cap, and a plastic sealing liner positioned adjacent a top wall portion of the cap. The sealing liner includes a central disc-shaped portion, and an integral relatively thick, annular sealing bead portion. The closure is thus configured to effect a "top/side seal" with an associated container. The construction includes an annular liner-retaining lip having a relatively flexible annular inner edge portion which coacts with the sealing bead portion of the liner to self-adjust and proportion the degree of sealing engagement between the sealing bead portion of the liner and the associated container.