The present invention provides a coated optical element including an optical substrate and a primer layer that is formed by cationic polymerisation of a coating composition containing an effective amount of an epoxy monomer and a vinyl ether monomer. The optical element may be an ophthalmic lens.

This invention relates to a process for preparing a stable low viscosity polymer polyol having a solids content of at least about 30% by weight. This process is particularly suitable for restarting the process of production after any reactor shutdown (planned or unplanned).

A graft copolymer comprising a backbone polymer and a branched-chain polymer, and represented by formula (I), ##STR00001##
where A, B, R.sub.a, R.sub.b, R.sub.c, R.sub.d, R.sub.e, R.sub.f, G.sub.1, G.sub.2, G.sub.3, G.sub.4, Y.sub.1, Y.sub.2, and k are as defined in the specification. A process for producing the grate copolymer, a process for preparing a gel polymer electrolyte including the graft copolymer, and an intermediate copolymer of the graft copolymer are also disclosed.

A graft copolymer comprising a backbone polymer and a branched-chain polymer, and represented by formula (I), ##STR00001##
where A, B, R.sub.a, R.sub.b, R.sub.c, R.sub.d, R.sub.e, R.sub.f, G.sub.1, G.sub.2, G.sub.3, G.sub.4, Y.sub.1, Y.sub.2, and k are as defined in the specification. A process for producing the grate copolymer, a process for preparing a gel polymer electrolyte including the graft copolymer, and an intermediate copolymer of the graft copolymer are also disclosed.

Disclosed are photoinitiators that are ultra violet (UV) reactive. The photoinitiators can be polymerized into polymeric backbones for use in UV curable hot melt pressure sensitive adhesives. The preferred polymeric backbones are acrylic-based polymers. The photoinitiators are very UVC sensitive and have excellent hot melt viscosity stability that is many fold higher than existing photoinitiators. The subject photoinitiators feature aryl ketones linked through an ether linkage to a variety of connector sequences that allow for polymerization of the photoinitiators.

A lactam-functionalized polymer is disclosed. The lactam-functionalized polymer includes lactam-functionalized polyacetal polyether, polyhemiaminal polyether or polyaminal polyether. The applications of the lactam-functionalized polymer are also disclosed.

Polymer latex binders useful for preparing coating compositions containing low levels of, or which are substantially free of, volatile organic compounds (VOCs) such as volatile freeze-thaw additives are prepared by multistage emulsion polymerization, wherein one stage provides a copolymer having a relatively high glass transition temperature and containing an oxyalkylene-containing (meth)acrylate comonomer.

Polymer latex binders useful for preparing coating compositions containing low levels of, or which are substantially free of, volatile organic compounds (VOCs) such as volatile freeze-thaw additives are prepared by multistage emulsion polymerization, wherein one stage provides a copolymer having a relatively high glass transition temperature and containing an oxyalkylene-containing (meth)acrylate comonomer.

The invention relates to the use polymers obtained by polymerization of ethylenically unsaturated acids or anhydrides onto unsaturation-containing polyether polyols for producing polyol dispersions by acidolysis of polyurethane waste, as well as to the use of the resulting polyol dispersions for producing polyurethanes.

The invention relates to the use polymers obtained by polymerization of ethylenically unsaturated acids or anhydrides onto unsaturation-containing polyether polyols for producing polyol dispersions by acidolysis of polyurethane waste, as well as to the use of the resulting polyol dispersions for producing polyurethanes.