Photo-polymers and use thereof
OwnerNavin Suyal, Iain McEwaninventors
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Abstract
The present invention provides an optical polyacrylate polymer wherein at least 20% w/w of the total monomer repeating units are of the general formula (I): —(—CH2—C(R1) (COOR2)—)— wherein R1 is H or a C1 to C12 aliphatic and/or aromatic group, and R2 is an aliphatic and/or aromatic moiety containing at least one S atom. In further aspects, the present invention provides methods of making the above polymers, as well as planar lightwave circuits formed from such polymers.
Claims29
An optical polyacrylate polymer suitable for use in a planar lightwave circuit (PLC), wherein at least 20% w/w of the total monomer repeating units are of the general formula (I)
- —(—CH2—C(R1)(COOR2)—)— (I)
- wherein R1 is H or a C1 to C12 aliphatic and/or aromatic group, and R2 is an aliphatic and/or aromatic moiety containing at least one S atom, and wherein said polymer has a Tg (glass transition temperature) of at least 140° C.
A photo-polymerisable composition suitable for use in the preparation of an optical polyacrylate polymer suitable for use in a planar lightwave circuit (PLC), which polymer has a Tg (glass transition temperature) of at least 140° C., said composition comprising acrylate monomer in intimate admixture with a photo-initiator, wherein at least 20% w/w of the acrylate monomer is of the general formula (II)
- CH2═C(R1)COOR2 (II)
- wherein R1 is H or a C1 to C12 aliphatic and/or aromatic group, and R2 is an aliphatic and/or aromatic moiety containing at least one S atom.
An optical polyacrylate polymer suitable for use in a planar lightwave circuit (PLC), which polymer is obtainable by polymerisation of acrylate monomer wherein at least 20% w/w of the acrylate monomer is of the general formula (II)
- CH2═C(R1)COOR2 (II)
- wherein R1 and R2 have the same meaning as before, and wherein said polymer has a Tg (glass transition temperature) of at least 140° C.
Dependencies are inferred from the claim text.