Switch Materials, Inc.

Fpinnovations

Solutia Canada Inc.

Ali Hayek

Serguei Sviridov

Neil Robin Branda

Jeremy Graham Finden

Andreea Spantulescu

Kyle Andrew Hope-Ross

Simon James Gauthier

James Daniel Senior

Duhane Lam

Wadood Yasser Hamad

Thomas Hu

Wadood Y Hamad

A compound according to Formula IA and IB, reversibly convertible under photochromic and electrochromic conditions between a ring-open isomer A and a ring-closed isomer B is provided. For substitutent groups, Z is N, O or S; each Ris independently selected from the group consisting of H, or halo; each Ris independently selected from the group consisting of H, halo, a polymer backbone, alkyl or aryl; or, when both Rtogether form &#x2014;CH&#x2550;CH&#x2014; and form part of a polymer backbone; each Ris independently selected from the group consisting of H, halo, alkyl, alkoxy, thioalkyl or aryl; each Ris aryl; and each Ris independently selected from the group consisting of H, halo, alkyl, alkoxy, thioalkyl or aryl. 

Diarylethene compounds and uses thereof

A molecule possessing a primary or secondary amino group and an additional functionality capable of providing a novel or improved property to a cellulose material has been permanently attached to the cellulose material in aqueous media using a water-soluble carbodiimide as the coupling agent/activator. One such molecule is 5-aminofluorescein (abbreviated as 'A-fluo') and one such cellulose material is a papermaking pulp. Papers made from a pulp furnish containing, for example, 0.01 wt. % of the 'A-fluo'-attached pulp show an embedded marker feature authenticable upon UV or visible light excitation. The &#x201c;A-fluo&#x201d;-attached pulp can also be used for the marking and identification of a pulp furnish.

Cellulose materials with novel properties

Variable transmittance optical filters capable of transitioning from a light state to a dark state on exposure to UV radiation and from a dark state to a light state with application of an electric voltage are provided. The optical filters comprise a switching material that comprises one or more chromophores that have electrochromic and photochromic properties.

Variable transmittance optical filter and uses thereof

A method is conceived for producing hydrophobic lignocellulosics based on the graft copolymerisation of vinyl-type monomers onto the lignocellulosic backbone initiated by a redox couple initiator in aqueous medium. The green modification process can be carried out on any lignocellulosic material, for example, chemical, chemi-thermomechanical or thermo-mechanical pulps, bleached or unbleached. The technology disclosed in this invention yields individual lignocellulosic entities, for instance, hydrophobic pulp fibers, that can be used in combination with other fibers or polymers to produce nonwoven fibrous materials or composites. A significant aspect of the invention is that the modified lignocellulosic material possesses an efficient hydrophobic barrier and minimum interfacial energy to generate optimum adhesion when introduced to polymer resins. Hydrophobic lignocellulosics can have wide applications in products requiring high dimensional stability and excellent adhesion as in fiber-based packaging, decorative laminates, furniture and non-structural biocomposites.

Composite of hydrophobic lignocellulose material bonded to complementary material

Growing community of inventors

Burnaby, Canada

Ali Hayek