Coloplast A/s

Lubrizol Advanced Materials, Inc.

Carsten Hoej

Niels Joergen Madsen

Christian B Nielsen

Umit G Makal

Petr Sehnal

Bo Rud Nielsen

Andrew Towns

David Jepson

The invention provides a method for the manufacture of a gel, said method comprising the steps of: providing a matrix composition comprising a polymeric photoinitiator of the general formula (I): Polymer-[CR&#x2014;CHR-Spacer(PI)](I) curing the matrix composition by exposing it to UV radiation and exposing the matrix composition to a swelling medium. The invention also relates to gels obtainable via the above method. The invention provides a hydrophilic gel precursor manufactured from the polymeric photoinitiator of Formula (I). Medical devices comprising the gels and hydrophilic gel precursors of the invention are provided. The invention also provides the use of a polymeric photoinitiator in the manufacture of a gel.

Hydrophilic gels derived from grafted photoinitiators

This invention relates to an alloy comprising polyurethane and polyolefin. It has now surprisingly been found that a specific composition of polyolefin and polyurethane has surprising mechanical properties and at the same time has transparent characteristics and/or appearance. The present invention provides an alloy with remarkable mechanical properties. The phases do not macro-phase separate. Thus, this stable and potentially broad interface is very effective in stress transfer when the alloy is strained. As one might expect, the hardness values for the alloys are in between the hardness values of each component but the other physical properties are no adjusted. In this way, when considering the hardness and mechanical values, these alloys behave like two compatible polymers.

Alloy comprising polyolefin and thermoplastic polyurethane

The invention provides a method for producing a polymeric photoinitiator of the general formula I: Polymer-[CR2-CHR-Spacer (PI)], (I) wherein m is an integer from 1-5000; n is a real number above 0 and below 5; each R group, independently, is a substituent independently selected from hydrogen, C1-C25 linear alkyl, C3-C25 branched alkyl, C3-C25 cycloalkyl, aryl, heteroaryl, &#x2014;OH, &#x2014;CN, halogens and amines and PI is a photoinitiator moiety. The method comprises grafting one or more photoinitiator moieties (PI), each of which comprises at least one activated alkene functional group, onto the polymer. Polymeric photoinitiators are also provided.

Grafted photoinitiators

Growing community of inventors

Slangerup, Denmark

Carsten Hoej