Sarnia, Canada
Sarnia, Canada

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Patent
LANXESS Inc. | Date: 2017-01-04

There is provided a process for producing an ionomer comprising the steps of (a) admixing in a mixer a halogenated copolymer with at least one nitrogen and/or phosphorus based nucleophile and (b) extruding the mixture from step (a). The process takes place with high conversion and the resulting ionomer contains a low amount of residual nucleophile and has a low yellowness index.


Patent
LANXESS Inc. | Date: 2017-06-21

A process for producing an allylic alcohol functionalized butyl rubber involves contacting an epoxidized butyl rubber with benzoic acid, an analogue of benzoic acid or a C_(1)-C_(7) alkanoic acid. The process and a polymer compound comprising the epoxidized butyl rubber and the benzoic acid, analogue of benzoic acid or a C_(1)-C_(7) alkanoic acid provide a cost effective route to a polar functionalized butyl rubber, particularly to butyl rubber comprising allylic alcohol functional groups.


Patent
LANXESS Inc. and University of Western Ontario | Date: 2017-06-14

A polymer nanocomposite coating of an elastomeric film containing at least 30 wt% conductive nanoparticles based on combined weight of elastomer and conductive nanoparticles is provided. The conductive nanoparticles have an average particle size along each dimension of less than 500 nm for nanoparticles having an aspect ratio of less than 20:1 or have an average particle size along each dimension of less than 2000 nm for nanoparticles having an aspect ratio of 20:1 or greater. The conductive nanoparticles are formed into hierarchical micro- and nano-sized aggregates having re-entrant morphology. The coating is both superoleophobic and conductive and retains these properties even when stretched under strain to over 100%. The coatings may be produced with simple spray technology.


Patent
LANXESS Inc. | Date: 2017-06-21

A process for producing a crosslinked polymer involves contacting an epoxidized unsaturated isoolefin copolymer with a catalytic amount of an acid in an absence of a solvent. A process for producing a hydroxylated unsaturated isoolefin copolymer involves contacting an epoxidized unsaturated isoolefin copolymer with a catalytic amount of an acid in an absence of a solvent. A hydroxylated unsaturated isoolefin copolymer having hydroxyl groups in endo configurations may be produced thereby.


Patent
LANXESS Inc. | Date: 2017-06-21

A process for epoxidation of an unsaturated polymer involves mixing an unsaturated polymer and a peroxy acid in an absence of solvent to produce an epoxidized polymer. The process may require no catalyst, require no or little applied external heat input, require no applied cooling, require less epoxidation agent, be faster and/or result in more efficient conversion of the unsaturated polymer.


Patent
LANXESS Inc. and University of Western Ontario | Date: 2016-06-08

A polymer-drug conjugate, which can be used in medical applications such as stents, has at least one active agent conjugated through a carboxylic acid moiety to a copolymer derived from at least one isoolefin monomer and at least one copolymerizable monomer, where the copolymerizable monomer is at least one multiolefin monomer, a -pinene monomer or a mixture thereof. Such conjugates show improved adhesion to stainless steel and a substantial decrease in burst release of paclitaxel form a drug eluting stent (DES).


Patent
LANXESS Inc. | Date: 2016-05-04

An adhesive composition that contains a tackifier, a butyl rubber ionomer and a plasticizer. The hot melt adhesive compositions may exhibit one or more of improved creep resistance and improved adhesion.


Patent
LANXESS Inc. | Date: 2016-02-24

A polymeric compound involves a blend of 50 wt% or greater of a thermoplastic having an average melting point (T_(m)) of less than 200C and less than 50 wt% of a butyl rubber ionomer dispersed in a matrix of the thermoplastic, weights based on total weight of the thermoplastic and butyl rubber ionomer. Such blends may exhibit improved physical properties compared to unblended thermoplastic, particularly ultimate elongation and/or damping. The polymeric compounds are useful for forming a variety of articles of manufacture.


Patent
LANXESS Inc. | Date: 2016-09-28

A halogenated polyisoolefin copolymer is composed of at least one isoolefin monomer, at least one multiolefin monomer, a halogen content of 0.05-2.5 mol%, and a halogenated oligomer content of less than 65% of total oligomer content in the halogenated polyisoolefin copolymer. The copolymer has low halogen content and significantly reduced levels of halogenated oligomers. The copolymer is especially useful in the pharmaceutical and food industries, for example as pharmaceutical and food product seals and closures.


Patent
LANXESS Inc. | Date: 2016-01-13

A method of separating a polyisoolefin elastomer from non-polymeric components in an organic solvent involves ultrafiltration of a solution of the polyisoolefin elastomer and non-polymeric components in an organic solvent through a semipermeable membrane to substantially retain the polyisoolefin elastomer in a retentate and provide the non-polymeric components in a permeate. Advantageously, stabilizers for the polyisoolefin elastomer are retained in the retentate along with the polyisoolefin elastomer, permeate flux through the membrane is higher as concentration of the polyisoolefin elastomer in the solution increases up to a concentration limit, the separated polyisoolefin elastomer in the retentate has a molecular weight that can be substantially unchanged even when ultrafiltration is conducted at elevated temperature and the amount of polyisoolefin elastomer in the permeate is unmeasurable providing an oligomer-rich permeate uncontaminated by polyisoolefin elastomer.

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