US 11,787,751 B2Granted

Water-absorbent resin and agricultural water-retaining material

AssigneeKuraray Co., Ltd.

InventorsMasahiro Baba, Toshinori Kato

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Abstract

A water-absorbent resin containing a vinyl alcohol-based polymer and having a crystal melting enthalpy of more than 0 J/g in a dry state.

Claims9

Dependent claims

A water-absorbent resin comprising a vinyl alcohol-based polymer, wherein the water-absorbent resin has a crystal melting enthalpy of more than 0 J/g in a dry state, and wherein the water-absorbent resin has a crosslinked structure.

Dependencies are inferred from the claim text.

Facts

Application: 16/957,635Filed 28 Dec 2018
Priority: JP 2017-25446828 Dec 2017
Published: US 2020/0347164 A15 Nov 2020
Granted: 17 Oct 2023
Term ends: Not estimatedThe source records don’t support an estimate.

Classification12 codes

C05G 3/80
Mixtures of one or more fertilisers with additives not having a specially fertilising activity: soil conditioners
A01G 27/00
Self-acting watering devices
C05G 3/70
Mixtures of one or more fertilisers with additives not having a specially fertilising activity: for affecting wettability, e.g. drying agents
C08F 8/28
Chemical modification by after-treatment: condensation with aldehydes or ketones

Family

US 2020/0347164 A1Pre-grant publication · published 5 Nov 2020
US 11,787,751 B2This patent

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

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