Deodorizing agent for sulfur- or nitrogen-containing initiators
OwnerSue Ellen Williamson, JoAnn Arceneauxinventors
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Abstract
Cationic initiator compositions for initiating cationic polymerization which contain a sulfur- or nitrogen-containing initiator, such as a sulfonium salt photoinitiator, and a deodorizing agent are disclosed. The deodorizing agent reduces undesirable odors, such as the organosulfur/mercaptan/thio odor generated by the decomposition of the sulfonium salt initiator upon initiation. The deodorizing agent may be a free radical inhibitor or phenolic compound such as methylether of hydroquinone, toluhydroquinone and hydroquinone. Processes for making and using the composition are also disclosed. The composition has applications in the coating, photoresist, adhesion, graphic arts and sealant arts among others.
Claims23
A cationic initiator composition for initiating cationic polymerization comprising:
- a) a sulfur- or nitrogen-containing initiator and
- b) a deodorizing agent;
- wherein the deodorizing agent reduces the odor of the initiator composition upon initiation.
A curable cationic polymerizable composition comprising:
- a) a sulfonium salt initiator,
- b) polymerizable material, and
- c) a deodorizing agent;
- wherein the deodorizing agent reduces the odor of the composition upon initiation.
In a process for curing a cationic polymerizable composition containing:
- a) a sulfonium salt initiator and
- b) polymerizable material;
- the improvement which comprises adding a deodorizing agent to said composition in order to reduce the odor upon curing.
A photoresist composition comprising:
- a photoactive sulfonium salt,
- a resin binder and
- a deodorizing agent;
- wherein said deodorizing agent reduces the odor of the photoresist composition upon cure.
In a process for preparing a photoresist composition containing:
- a) a photoactive sulfonium salt and
- b) a resin binder;
- the improvement which comprises adding a deodorizing agent to said photoresist composition in order to reduce the odor upon curing.
Dependencies are inferred from the claim text.