US12522956B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-12522956-B2 |
| Application number | US-201917418586-A |
| Country | US |
| Kind code | B2 |
| Filing date | Dec 6, 2019 |
| Priority date | Dec 27, 2018 |
| Publication date | Jan 13, 2026 |
| Grant date | Jan 13, 2026 |
A practical reading order for non-experts. Skip the full description unless you need deep technical detail.
What the patent document calls the invention.
A short plain-language summary of the technical disclosure.
Who owns or filed the patent and who is credited as inventor.
Filing, priority, publication, and grant dates set the timeline.
The legal scope of protection — read this for what is actually claimed.
Technology tags used to group this patent with similar filings.
Prior art links and similar publications in this corpus.
Official abstract text for this publication.
The present invention relates to a bundled yarn, comprising plural fibers integrated by a sizing agent, wherein the sizing agent is a modified polyvinyl alcohol comprising a structural unit (X) derived from an unsaturated carboxylic acid or derivative thereof in an amount of 0.1 to 10% by mole, taking the amount of all monomer units as 100% by mole, which modified polyvinyl alcohol has a saponification degree of 85% by mole or higher.
Opening claim text (preview).
The invention claimed is: 1 . A bundled yarn, comprising: plural fibers integrated by a sizing agent, wherein the sizing agent is a modified polyvinyl alcohol comprising a plurality of a structural unit (X) comprising a carboxylate unit, derived from an unsaturated carboxylic acid or derivative thereof in polymerized form, in range of from 2 to 9 mol. %, taking an amount of all monomer units as 100 mol. %, wherein the structural unit (X) comprises a structural unit of formula (X1) and (X2): X being H or a methyl group and Y being H, an alkali metal atom, or an alkyl group having 1 to 5 carbon atoms, wherein an X1/(X1+X2) molar amount ratio is in a range of from 0.90 to 0.99, wherein the modified polyvinyl alcohol has a saponification degree of 85 mol. % or higher, and wherein the bundled yarn has a fiber separation degree of 90% or higher. 2 . The bundled yarn of claim 1 , wherein the modified polyvinyl alcohol has a viscosity-average polymerization degree in a range of from 100 to 5,000. 3 . The bundled yarn of claim 1 , wherein the saponification degree of the modified poly vinyl alcohol is in a range of from 88 to 100 mol. %. 4 . The bundled yarn of claim 1 , wherein the unsaturated carboxylic acid or derivative thereof comprises a (meth)acrylic acid, a (meth)acrylic acid alkyl ester, a (meth)acrylic acid metal salt, or a mixture of two or more of any of these. 5 . The bundled yarn of claim 1 , wherein, in formula (X1) and/or (X2) X is a methyl group. 6 . The bundled yarn of claim 1 , wherein the plural fibers are poly vinyl alcohol fibers. 7 . The bundled yarn of claim 1 , wherein the plural fibers have an average fiber diameter in a range of from 3 to 900 μm. 8 . The bundled yarn of claim 1 , wherein the plural fibers have an aspect ratio in a range of from 50 to 2,500. 9 . The bundled yarn of claim 1 , having a fiber agglomeration degree of 10% or lower. 10 . The bundled yarn of claim 1 , wherein the saponification degree of the modified polyvinyl alcohol is in a range of from 90 to 99.9 mol. %. 11 . The bundled yarn of claim 1 , wherein the saponification degree of the modified polyvinyl alcohol is in a range of from 95 to 99.8 mol. %. 12 . The bundled yarn of claim 1 , wherein the modified polyvinyl alcohol has a viscosity-average polymerization degree in a range of from 100 to 4,000. 13 . The bundled yarn of claim 1 , wherein the modified polyvinyl alcohol has a viscosity-average polymerization degree in a range of from 300 to 3,500. 14 . The bundled yarn of claim 1 , wherein, in formula (X1) and (X2), X is H. 15 . The bundled yarn of claim 1 , wherein, in formula (X1) and (X2), X is a methyl group. 16 . The bundled yarn of claim 1 , wherein, in formula (X1) and/or (X2), Y is an alkyl group having 1 to 5 carbon atoms. 17 . The bundled yarn of claim 1 , wherein, in formula (X1) and/or (X2), Y is H. 18 . The bundled yarn of claim 1 , wherein, in formula (X1) and/or (X2), Y is an alkali metal atom. 19 . A hydraulic composition, comprising: the bundled yarn of claim 1 ; a cement component; an aggregate; and water. 20 . A molded body, obtained by curing the hydraulic composition of claim 19 .
polymers of unsaturated carboxylic acids or unsaturated organic esters, e.g. polyacrylic esters, polyvinyl acetate · CPC title
polymers of unsaturated alcohols, e.g. polyvinyl alcohol, or of their acetals or ketals · CPC title
Orientation of the fibers · CPC title
Organic · CPC title
Polyacrylates; Polymethacrylates · CPC title
Related publications grouped by family.
Answers are generated from the same data shown on this page.