Optical elements comprising a fluorinated surface treatment comprising urethane, ester or phosphate linkages
Assignee3M Innovative Properties Company
InventorsZai-Ming Qiu, Naiyong Jing
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Abstract
The present invention relates to optical elements comprising fluorochemical surface treatments. The invention further relates to materials such as retroreflective sheetings, pavement markings and beaded projection screens comprising a binder and the surface treated optical elements.
Claims16
Optical elements having a fluorochemical surface treatment wherein the fluorochemical comprises the reaction product of
- a) at least one hydroxyl group containing non-fluorinated polyol;
- b) at least one hydroxyl group containing fluorinated monoalcohol;
- and
- c) a coreactant selected from
- i) polyisocyanates,
- ii) polycarboxylic acids and derivatives thereof, or
- iii) (poly)phosphoric acid derivatives.
Optical elements having a fluorochemical surface treatment wherein the fluorochemical comprises the reaction product of
- a) at least one hydroxyl group containing material reactant substituted with a silane group;
- and
- b) a coreactant selected from
- i) polyisocyanates,
- ii) polycarboxylic acids and derivatives thereof, or
- iii) (poly)phosphoric acid derivatives;
- wherein at least one reactant or coreactant comprises a fluorinated group.
Optical elements having a fluorochemical surface treatment wherein the fluorochemical comprises the reaction product of
- a) at least one hydroxyl group containing material reactant;
- and
- b) a coreactant substituted with at a silane group selected from
- i) polyisocyanates,
- ii) polycarboxylic acids and derivatives thereof, or
- iii) (poly)phosphoric acid derivatives;
- wherein at least one reactant or coreactant comprises a fluorinated group.
Optical elements having a fluorochemical surface treatment wherein the fluorochemical comprises the reaction product of
- a) at least one hydroxyl group containing material reactant;
- and
- b) a coreactant selected from
- i) polyisocyanates,
- ii) polycarboxylic acids and derivatives thereof, or
- iii) (poly)phosphoric acid derivatives;
- wherein at least one reactant or coreactant comprises a fluorinated group and the reaction product further comprises a long chain hydrocarbon monalcohol, a monofunctional fluorochemical, a water-solubilizing groups containing ingredient, silane group containing ingredient or mixture thereof.
Optical elements having a fluorochemical surface treatment wherein the fluorochemical comprises the reaction product of
- a) at least one hydroxyl group containing material reactant;
- and
- b) a polyisocyanate,
- wherein at least one reactant or coreactant comprises a fluorinated group and the reaction product further comprises a silane group.
Dependencies are inferred from the claim text.