Impact-cushioning particles, artificial turf structure, and paved structure

Patent metadata

Field	Value
Publication number	US-2025146231-A1
Application number	US-202519014799-A
Country	US
Kind code	A1
Filing date	Jan 9, 2025
Priority date	Jul 19, 2022
Publication date	May 8, 2025
Grant date	—

Abstract

Impact-cushioning particles contain a poly(3-hydroxybutyrate) resin component. The poly(3-hydroxybutyrate) resin component contains a copolymer component (A), and the copolymer component (A) includes a copolymer (A-1) and/or a copolymer (A-2). The impact-cushioning particles are suitable for use in artificial turf or a paved structure. Copolymer (A-1) is a copolymer of 3-hydroxybutyrate units and other hydroxyalkanoate units, in which the content of the other hydroxyalkanoate units is from 1 to less than 10 mol %. Copolymer (A-2) is a copolymer of 3-hydroxybutyrate units and other hydroxyalkanoate units, in which the content of the other hydroxyalkanoate units is 24 mol % or more.

First claim

1 - 10 . (canceled)

11 : An artificial turf structure, comprising artificial turf and the impact-cushioning particles comprising a poly(3-hydroxybutyrate) resin component, wherein
gaps between piles of the artificial turf are filled with the impact-cushioning particles, the poly(3-hydroxybutyrate) resin component comprises a copolymer component (A), the copolymer component (A) comprises a copolymer (A-1) and/or a copolymer (A-2), an average content of hydroxyalkanoate units other than 3-hydroxybutyrate units in the poly(3-hydroxybutyrate) resin component is from 10 to 25 mol %, the copolymer (A-1) is a copolymer of 3-hydroxybutyrate units and other hydroxyalkanoate units, wherein a content of the other hydroxyalkanoate units is from 1 to less than 10 mol %, and the copolymer (A-2) is a copolymer of 3-hydroxybutyrate units and other hydroxyalkanoate units, wherein a content of the other hydroxyalkanoate units is 24 mol % or more.

12 . (canceled)

13 : The artificial turf structure according to claim 11 , wherein a content of the copolymer (A-1) and/or the copolymer (A-2) is at least 50 wt % based on a total weight of the poly(3-hydroxybutyrate) resin component.

14 : The artificial turf structure according to claim 11 , wherein the poly(3-hydroxybutyrate) resin component has a melting point of from 120° C. to 170° C.

15 : The artificial turf structure according to claim 11 , wherein the other hydroxyalkanoate units are 3-hydroxyhexanoate units.

16 : The artificial turf structure according to claim 11 , comprising from 10 to 70 parts by weight of a plasticizer per 100 parts by weight of the total poly(3-hydroxybutyrate) resin component.

17 : The artificial turf structure according to claim 16 , wherein the plasticizer is a modified glycerin ester compound.

18 : The artificial turf structure according to claim 17 , wherein the modified glycerin ester compound comprises at least one compound selected from the group consisting of glycerin diacetomonolaurate, glycerin diacetomonooleate, glycerin monoacetomonostearate, glycerin diacetomonocaprylate, and glycerin diacetomonodecanoate.

19 : The artificial turf structure according to claim 18 , wherein the modified glycerin ester compound comprises glycerin diacetomonolaurate.

Assignees

• Kaneka Corp

Inventors

• Okura Tetsuo
• Tanaka Shigeru
• Ohta Koki
• Dohi Koichi

Classifications

• C08K5/0016

  Plasticisers · CPC title

• C08K5/103

  with polyalcohols · CPC title

• C08G63/06

  derived from hydroxycarboxylic acids · CPC title

• C08L67/04

  Polyesters derived from hydroxycarboxylic acids, e.g. lactones (C08L67/06 takes precedence) · CPC title

• E01C13/08 Primary

  Surfaces simulating grass {; Grass-grown sports grounds (grass-like surfaces for skiing E01C13/12)} · CPC title