Unlock instant, AI-driven research and patent intelligence for your innovation.

Polylactide based compositions

A polylactide block and polymer technology, which is applied in the field of polylactide-based compositions, can solve the problems of low melting temperature and thermal stability of PLA, and PLA is not suitable for the application of heat.

Inactive Publication Date: 2020-05-19
TOTAL RES & TECH FELUY
View PDF10 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] Another problem with PLA is that the melting temperature and thermal stability are rather low, making PLA unsuitable for certain applications where even only small amounts of heat are involved

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Polylactide based compositions
  • Polylactide based compositions
  • Polylactide based compositions

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0261] All parts and all percentages in the following examples and throughout the specification are parts by weight or percentages by weight, respectively, unless otherwise indicated.

[0262] Material

[0263] Trans-β-farnesene was purchased from Amyris (CAS No. 18794-84-8). The structure of trans-β-farnesene is given by formula (I)

[0264]

[0265] Solvents such as methanol, chloroform and toluene were purchased from Sigma-Aldrich as anhydrous liquids.

[0266] n-Butyllithium was purchased from Sigma Aldrich.

[0267] Propylene oxide was purchased from Sigma-Aldrich.

[0268] Tin 2-ethylhexanoate was purchased from VWR (Alfa Aesar supplier) with a purity of 96%.

[0269] Lactide, purified L-lactide from Corbion (designated Puralact L) was used.

[0270] Ingeo TM Biopolymer 2500HP (PLA HP2500) was purchased from NatureWorks.

[0271] Table 1 shows the Ingeo TM Physical properties of Biopolymer 2500HP.

[0272] Table 1a

[0273]

[0274] PDLA D070 was purc...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
number average molecular weightaaaaaaaaaa
number average molecular weightaaaaaaaaaa
number average molecular weightaaaaaaaaaa
Login to View More

Abstract

The present invention relates to composition comprising at least two polymers, wherein, (a) the first polymer is a block copolymer comprising at least one polyfarnesene block and at least one poly-L-lactide block; and, (b) the second polymer is selected from poly-D-lactide, or a block copolymer 5 comprising at least one polyfarnesene block and at least one poly-D-lactide block; or, (a) the first polymer is a block copolymer comprising at least one polyfarnesene block and at least one poly-D-lactide block; and, (b) the second polymer is selected from poly-L-lactide, or a block copolymer 10 comprising at least one polyfarnesene block and at least one poly-L-lactide block. The present invention relates to a process for preparing said composition, articles comprising said composition, the useof block copolymers as nucleating agent and stereo-complex forming agent.

Description

technical field [0001] The present invention relates to compositions comprising polylactide-based polymers and uses thereof. Background technique [0002] Polylactide (also known as polylactic acid (PLA)) is a synthetic aliphatic polyester derived from renewable resources such as corn, sugar beet and cassava that can eventually degrade under composting conditions. [0003] Although attempts have been made to use PLA in a variety of end-use applications, PLA is known to be brittle and exhibit low toughness, which can lead to low impact strength products or articles. The impact resistance of PLA can be modified by using existing polymeric impact modifiers; however, currently available polymeric impact modifiers always reduce the transparency of PLA materials. Liquid plasticizers can be used at high levels (>15%) to improve the impact resistance of PLA, however there is migration of the plasticizer during the lifetime of the PLA blend. [0004] Impact modifiers such as rub...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/04C08G63/08C08F36/22
CPCC08F36/22C08G63/08C08L67/04C08L53/00
Inventor T.库平
Owner TOTAL RES & TECH FELUY