Mitsui Chemicals Patent, A61K 6/887, Zinc Catalyst Method
Summary
USPTO granted Patent US12605306B2 to MITSUI CHEMICALS, INC. on April 21, 2026, covering a method of manufacturing monomer compositions using a zinc catalyst combined with iso(thio)cyanate and alcohol compounds. The patent, filed on August 7, 2020 under application number 17628600, contains 15 claims and is classified under CPC A61K 6/887. Inventor Naoyuki Kakinuma developed the method where at least one of the iso(thio)cyanate compound or alcohol compound has a (meth)acryloyl group.
“A method of manufacturing a monomer composition includes a step of mixing a zinc catalyst (A), an iso(thio)cyanate compound (B) having an iso(thio)cyanate group, and an alcohol compound (C) having a hydroxy group, and at least one of the iso(thio)cyanate compound (B) or the alcohol compound (C) has a (meth)acryloyl group.”
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GovPing monitors USPTO Patent Grants - Pharma (A61K) for new healthcare & life sciences regulatory changes. Every update since tracking began is archived, classified, and available as free RSS or email alerts — 22 changes logged to date.
What changed
USPTO issued Patent US12605306B2 to Mitsui Chemicals, Inc. on April 21, 2026, granting exclusive rights to a method of manufacturing monomer compositions involving a zinc catalyst (A), an iso(thio)cyanate compound (B), and an alcohol compound (C). The composition requires that at least one of compounds B or C has a (meth)acryloyl group. The patent contains 15 claims and is classified under CPC A61K 6/887.
Manufacturers and chemical companies developing curable monomer compositions or polymerizable dental/industrial materials should review this patent to assess potential licensing needs or design-around considerations. The patent's broad claims covering zinc-catalyzed compositions with (meth)acryloyl functionality may be relevant to companies operating in the coatings, adhesives, sealants, or dental materials sectors.
Archived snapshot
Apr 22, 2026GovPing captured this document from the original source. If the source has since changed or been removed, this is the text as it existed at that time.
Method of manufacturing monomer composition, raw material composition, monomer composition, curable composition, and molded body
Grant US12605306B2 Kind: B2 Apr 21, 2026
Assignee
MITSUI CHEMICALS, INC.
Inventors
Naoyuki Kakinuma
Abstract
A method of manufacturing a monomer composition includes a step of mixing a zinc catalyst (A), an iso(thio)cyanate compound (B) having an iso(thio)cyanate group, and an alcohol compound (C) having a hydroxy group, and at least one of the iso(thio)cyanate compound (B) or the alcohol compound (C) has a (meth)acryloyl group.
CPC Classifications
A61K 6/887
Filing Date
2020-08-07
Application No.
17628600
Claims
15
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