Oil resistant agent for waxes and pulp

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AI technical title is built by Patsnap AI team. It summarizes the technical point description of the patent document.
By using a water-dispersible composition of petroleum wax or microcrystalline wax with a median particle size of 0.01μm to 1μm on a pulp substrate and a dispersant, the problem of insufficient oil resistance of the pulp substrate is solved, and the effects of oil resistance and stain resistance are achieved. It is suitable for pulp molded products for food contact.

CN121399327APending Publication Date: 2026-01-23DAIKIN INDUSTRIES LTD

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Patent Information

Application Number: CN202480043333.4
Authority / Receiving Office: CN · China
Patent Type: Applications(China)
Current Assignee / Owner
Priority Date: 2023-09-07
Filing Date: 2024-08-08
Publication Date: 2026-01-23

Application Information

Patent Timeline

07 Sep 2023

Priority

08 Aug 2024

Application

CN202480043333.4

23 Jan 2026

Publication

CN121399327A

IPC: D21H19/18; C09K3/18

CPC: C08L91/06; D21H19/18; C08L91/08; D21H21/16; D21H17/60; D21H27/10; D21H27/30; D21H21/52

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Application Domain

Pulp properties modification Water-repelling agents addition

Technology Topics

Wax Polymer science

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AI Technical Summary

Technical Problem

There is no clear record or solution regarding the oil resistance performance of pulp substrates in the existing technology.

Method used

Petroleum wax or microcrystalline wax with a median volume particle size of 0.01 μm to 1 μm is used as an oil-resistant agent for pulp. It is combined with a dispersant to form a water-dispersible composition. By natural drying, particles with an average particle size of 0.01 μm to 1 μm and a charge density of -600 μeq/g to 100 μeq/g are formed for treating pulp substrates.

Benefits of technology

It achieves oil resistance to pulp substrates, endowing them with oil resistance, oil repellency and stain resistance, and is suitable for pulp molded products for food contact applications.

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Abstract

The present invention provides: a novel wax for use in an oil-resistant agent for paper pulp, the wax being wax particles having a median diameter (D50) of 0.01-1 [mu] m as measured by laser diffraction scattering, the oil-resistant agent for paper pulp being a water-dispersed composition, containing a wax and a dispersant, having a volume median diameter (D50) of 0.01-1 [mu] m, and having a median diameter (D50) of 0.01-1 [mu] m as measured by the laser diffraction scattering method; with this oil-resistant agent for pulp, it is possible to impart oil resistance to a pulp base material.

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