Abstract: Adhesive compositions having optical clarity are disclosed. The compositions include saturated epoxy-functionalized compound; a heat cure system which includes an alicyclic anhydride and a cationic catalyst; a predominantly hydrophobic cross-linking (meth)acrylate in amounts sufficient to control the crosslinking density of the composition; and a photoinitiator to allow for initial fixturing of the composition prior to thermal cure. The compositions provide an optical transmittance of at least 95% and a yellowness (*b) of <1%.

Abstract: A method of making functional polyisobutylene (PIB)-containing oligomers and polymers. By the disclosed method, the synthesis of functional PIB-containing polymers can be achieved directly under cationic polymerization conditions and does not include any post-polymerization reactions. The desired functionality is introduced by direct Electrophilic Aromatic Substitution (EAS) reaction using substituted phenyl ring carrying desirable functionalities that do not react with Lewis acid but have weak association with Lewis acid, which still allow living polymerization and EAS reaction under living cationic polymerization conditions. In the disclosed method functional polyisobutylene or isobutylene containing oligomers and polymers can be prepared using stoichiometric or near stoichiometric ratios of the capping or functionalization reagent to polymer end-chain.

Abstract: A method of making functional polyisobutylene (PIB)-containing oligomers and polymers. By the disclosed method, the synthesis of functional PIB-containing polymers can be achieved directly under cationic polymerization conditions and does not include any post-polymerization reactions. The desired functionality is introduced by direct Electrophilic Aromatic Substitution (EAS) reaction using substituted phenyl ring carrying desirable functionalities that do not react with Lewis acid but have weak association with Lewis acid, which still allow living polymerization and EAS reaction under living cationic polymerization conditions. In the disclosed method functional polyisobutylene or isobutylene containing oligomers and polymers can be prepared using stoichiometric or near stoichiometric ratios of the capping or functionalization reagent to polymer end-chain.

Abstract: Curable sealant compositions having low temperature sealing ability improved over convention curable sealing compositions. The composition is flowable and can be cured to a cross linked form to provide cured reaction products that exhibit elastomeric properties. The curable elastomeric sealant composition can include a cross linkable elastomeric oligomer; an initiator or cross-linking agent; a glassy monomer and/or a rubbery monomer; and optionally one or more additives. Cured reaction products of the composition have a single Tg and retain a higher sealing force at low temperatures (but above the cured product Tg) as compared to a curable composition made from the same cross linkable elastomeric oligomer but without the glassy and/or rubbery monomer.

Abstract: Disclosed are single step and multi-step methods of making functional polyisobutylene (PIB)-containing oligomers and polymers and the materials made thereby. In the single step method a functional group containing PIB oligomer or polymer is made under cationic polymerization conditions in a direct, one step reaction. In the multi-step method a functional group containing PIB oligomer or polymer is made in a two-step process. The first step is performed under cationic polymerization conditions. The second step is performed under non-cationic polymerization conditions.

Abstract: Novel fluorinated compounds, their method of preparation and use are disclosed, as well as the incorporation of new and old fluorinated compounds in controlled radical polymerization processes to efficiently produce polymer compositions with unique and enhanced properties. Various cure mechanisms and types of end-uses are disclosed.

Abstract: A method of making functional polyisobutylene (PIB)-containing oligomers and polymers. By the disclosed method, the synthesis of functional PIB-containing polymers can be achieved directly under cationic polymerization conditions and does not include any post-polymerization reactions. The desired functionality is introduced by direct Electrophilic Aromatic Substitution (EAS) reaction using substituted phenyl ring carrying desirable functionalities that do not react with Lewis acid but have weak association with Lewis acid, which still allow living polymerization and EAS reaction under living cationic polymerization conditions. In the disclosed method functional polyisobutylene or isobutylene containing oligomers and polymers can be prepared using stoichiometric or near stoichiometric ratios of the capping or functionalization reagent to polymer end-chain.

Abstract: Disclosed are single step and multi-step methods of making functional polyisobutylene (PIB)-containing oligomers and polymers and the materials made thereby. In the single step method a functional group containing PIB oligomer or polymer is made under cationic polymerization conditions in a direct, one step reaction. In the multi-step method a functional group containing PIB oligomer or polymer is made in a two-step process. The first step is performed under cationic polymerization conditions. The second step is performed under non-cationic polymerization conditions.

Abstract: Curable sealant compositions having low temperature sealing ability improved over convention curable sealing compositions. The composition is flowable and can be cured to a cross linked form to provide cured reaction products that exhibit elastomeric properties. The curable elastomeric sealant composition can include a cross linkable elastomeric oligomer; an initiator or cross-linking agent; a glassy monomer and/or a rubbery monomer; and optionally one or more additives. Cured reaction products of the composition have a single Tg and retain a higher sealing force at low temperatures (but above the cured product Tg) as compared to a curable composition made from the same cross linkable elastomeric oligomer but without the glassy and/or rubbery monomer.

Abstract: Novel fluorinated compounds, their method of preparation and use are disclosed, as well as the incorporation of new and old fluorinated compounds in controlled radical polymerization processes to efficiently produce polymer compositions with unique and enhanced properties. Various cure mechanisms and types of end-uses are disclosed.