Curable compositions based on multistage polymers
AssigneeArkema France
InventorsManjuli Gupta, Lucile Bonhoure
Life of this patent
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Abstract
Compositions which are curable by, for example, exposure to radiation to form useful articles such as three-dimensionally printed objects are prepared using multistage polymers, polymerizing organic substances and (meth)acrylic polymers. The multistage polymer is effective to toughen and impact modify the cured articles, yet the compositions prior to curing are relatively low in viscosity and agglomerate content even at high loadings of multistage polymer.
Claims18
A curable composition comprising component (a), component (b), component (c), and optionally component (d), wherein:
- a) component (a) is one or more multistage polymers;
- b) component (b) is one or more (meth)acrylic polymers (P1), which is or are the same or different in composition from any (meth)acrylic polymer present as part of the multistage polymer(s) of component (a);
- c) component (c) is one or more polymerizing organic substances selected from the group consisting of tetrahydrofurfuryl methacrylate, cyclic trimethylolpropane formal acrylate, methoxy polyethylene glycol monomethacrylates containing on average from about 6 to about 15 ethylene oxide units, polyethylene glycol dimethacrylates containing from about 3 to about 7 ethylene oxide units, 1,4-butanediol dimethacrylate, trimethylolpropane trimethacrylate, ethoxylated pentaerythiritol tetraacrylates containing from about 2 to about 6 ethylene oxide units, hydroxypropyl methacrylate, ethoxylated bisphenol A dimethacrylates containing from about 1 to about 12 ethylene oxide units, tricyclodecanemethanol acrylate, dicyclodecane dimethananol diacrylate, (meth)acrylate-functionalized urethane oligomers and combinations thereof;
- and
- d) optional component (d) is one or more photoinitiators.
A curable composition comprising component (a), component (b), component (c), and optionally component (d), wherein:
- a) component (a) is one or more multistage polymers;
- b) component (b) is one or more (meth)acrylic polymers (P1), which is or are the same or different in composition from any (meth)acrylic polymer present as part of the multistage polymer(s) of component (a);
- c) component (c) is one or more polymerizing organic substances comprising at least one polymerizing flexibilizer selected from the group consisting of (meth)acrylate-functionalized urethane oligomers, (meth)acrylate-functionalized polyester oligomers, (meth)acrylate-functionalized polyether oligomers, epoxy-functionalized oligomers and combinations thereof;
- d) optional component (d) is one or more photoinitiators.
The curable composition of 1, wherein the composition has a content of component (a) of at least 10 wt % and a viscosity at 25° C. of not greater than 10,000 mPa·s (cP).
Dependencies are inferred from the claim text.