US 11,535,979 B2Granted

Fiber material for cement reinforcement

AssigneeTeijin Limited

InventorsShuhei Okamura, Shintaro Shimada, Akira Teraoka, Takeya Dei

Life of this patent

Estimating the term…

Loading patent…

Abstract

Provided is a fiber material for cement reinforcement, configured such that a resin A containing an isocyanate compound as a constituent component is present inside a fiber bundled body, and a resin B containing an epoxy resin as a constituent component is present on a surface of the fiber bundled body. Further, it is preferable that the resin A contains a polyol or an epoxy compound as a constituent component in addition to the isocyanate compound, the resin B contains an acrylic-modified epoxy resin or a bisphenol-A epoxy resin as a main component, the fiber bundled body has a tensile strength of 7 cN/dtex or more, and the fiber bundled body includes 50 to 3,000 single fibers. The invention is also addressed to a concrete or mortar molded article using the above fiber material for reinforcement.

Claims16

Dependent claims

A concrete or mortar formed body, characterized in that the formed body comprises a fiber material for cement reinforcement,

wherein the fiber material is organic fibers,
wherein a resin A containing a dimethylpyrazole-blocked isocyanate compound or a caprolactam-blocked isocyanate compound as a constituent component is present inside a fiber bundled body, and a resin B containing an epoxy resin as a constituent component is present on a surface of the fiber bundled body,
wherein the resin A contains a sorbitol polyglycidyl ether epoxy compound as a constituent component in addition to the isocyanate compound,
and the resin B contains a bisphenol-A epoxy resin as a main component;
and
wherein the resin A is applied in an amount of 5.0 to 15.0 wt % relative to the total fiber weight, and the resin B is applied in an amount of 0.5 to 5.0 wt % relative to the total fiber weight.

3 more elements

Dependencies are inferred from the claim text.

Facts

Application: 17/023,970Filed 17 Sep 2020 · division
Priority: JP 2015-00772819 Jan 2015
Published: US 2021/0002819 A17 Jan 2021
Granted: 27 Dec 2022
Term ends: Not estimatedThe source records don’t support an estimate.

Classification10 codes

D06M 15/55
Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds: epoxy resins
C04B 14/38
Use of inorganic materials as fillers, e.g. pigments, for mortars, concrete or artificial stone; Treatment of inorganic materials specially…:…
C04B 16/0675
Fibrous: from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
C04B 18/022
Agglomerated materials , e.g. artificial aggregates: agglomerated by an organic binder

Family

PCT/JP2016/050901Parent of this division · filed 14 Jan 2016
US 2021/0002819 A1Pre-grant publication · published 7 Jan 2021
Application15/531,501Parent of this division
US 2017/0342654 A1Published application
US 11,535,979 B2This patent

From the US filing history. Foreign family members aren’t listed.