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US 2026/0193408 A1Published application
Methods of making compositions from olefin metathesis photopolymers
AssigneePolyspectra, Inc.
InventorsRaymond A. Weitekamp, Charles Friesen
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Abstract
Described herein, in part, are compositions and methods for processing and curing photopolymer compositions based on olefin metathesis.
Claims52
A method for preparing a cured composition, comprising:
- (a) providing a mixture comprising:
- (i) a latent ruthenium (Ru) complex;
- (ii) an initiator;
- and
- (iii) at least one polymer precursor;
- (b) exposing the mixture to electromagnetic radiation above a threshold energy to activate the initiator,
- wherein upon activation by the electromagnetic radiation above the threshold energy, the initiator reacts with the latent Ru complex to generate an activated Ru complex, and
- wherein the activated Ru complex reacts with the at least one polymer precursor to induce polymerization of the at least one polymer precursor to generate a plurality of curable photopolymers;
- (c) placing the plurality of curable photopolymers in a heat-transfer medium;
- and
- (d) exposing the plurality of curable photopolymers placed in the heat-transfer medium to electromagnetic radiation below the threshold energy,
- thereby preparing the cured composition.
9 more elements
A method of reducing oxidative decomposition of a plurality of curable photopolymers while curing the plurality of curable photopolymers with electromagnetic below a threshold energy, comprising:
- (a) providing a mixture comprising:
- (i) a latent ruthenium (Ru) complex;
- (ii) an initiator;
- and
- (iii) at least one polymer precursor;
- (b) exposing the mixture to electromagnetic radiation above the threshold energy to activate the initiator,
- wherein upon activation by the electromagnetic radiation above the threshold energy, the initiator reacts with the latent Ru complex to generate an activated Ru complex, and
- wherein the activated Ru complex reacts with the at least one polymer precursor to induce polymerization of the at least one polymer precursor to generate the plurality of curable photopolymers;
- and
- (c) placing the plurality of curable photopolymers in a heat-transfer medium comprising a solvent and at least one antioxidant;
- and
- (d) exposing the plurality of curable photopolymers placed in the heat-transfer mixture to the electromagnetic below the threshold energy.
9 more elements
A method for preparing a cured composition, comprising:
- (a) providing a mixture comprising:
- (i) a latent ruthenium (Ru) complex;
- (ii) an initiator;
- and
- (iii) at least one polymer precursor;
- (b) exposing the mixture to electromagnetic radiation above a threshold energy to activate the initiator,
- wherein upon activation by the electromagnetic radiation above the threshold energy, the initiator reacts with the latent Ru complex to generate an activated Ru complex, and
- wherein the activated Ru complex reacts with the at least one polymer precursor to induce polymerization of the at least one polymer precursor to generate a plurality of curable photopolymers;
- and
- (c) means for reducing oxidative decomposition of a plurality of curable photopolymers while curing the plurality of curable photopolymers with microwave or infrared radiation,
- thereby preparing the cured composition.
8 more elements
Dependencies are inferred from the claim text.