Supercharge Your Innovation With Domain-Expert AI Agents!

Polyolefin graft copolymer/polyamide blend

A technology of graft copolymer and copolymer, applied in the field of composition of graft copolymer, can solve problems such as difficult dispersion

Inactive Publication Date: 2001-05-09
MONTELL TECH CO BV
View PDF16 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, it is difficult to disperse polar polyamide resin and non-polar polyolefin resin well

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0096] This example illustrates the effect of nylon 6 and impact modifiers on the properties of a graft copolymer having a propylene homopolymer backbone grafted with styrene / methacrylic acid copolymer (PP-graft (S / MAA)) . A composition containing maleic anhydride grafted polypropylene compatibilizer but no PP-graft-(S / MAA) graft copolymer was used as a control sample.

[0097] In this example and the following examples, the propylene homopolymer as the polymer backbone has the following properties: spherical shape, melt flow rate (MFR) at 230°C and 2160g is 10dg / min, porosity 0.44cc / g, Xylene insoluble matter at room temperature accounts for 96.5%, M w / Mn =5.

[0098] Monomers (60 / 40 styrene / methacrylic acid) were grafted onto the polypropylene backbone using the peroxide-initiated graft polymerization method described previously at a grafting temperature of 100°C. 95 parts by weight of monomers were added per 100 parts of polypropylene. tert-butylperoxy-2-ethylhexanoa...

Embodiment 2

[0111] This example illustrates the graft copolymerization of nylon 6 and an impact modifier to a propylene homopolymer backbone grafted with styrene / α-methylstyrene / maleic anhydride copolymer (S / MS / MA) influence on physical properties. A composition containing maleic anhydride grafted polypropylene compatibilizer but no PP-graft-(S / MS / MA) graft copolymer was used as a control sample.

[0112] At a grafting temperature of 90°C, the monomers (19.4% styrene, 44% α-methylstyrene, 36.5% maleic anhydride ) grafted on the polypropylene main chain. 95 parts by weight of monomers were added per 100 parts of polypropylene. Tert-butylperoxypivalate (1.5 pph active peroxide in 75% white spirit) was used as peroxide. Monomer was added at a rate of 1 pph / min over 95 minutes. Maleic anhydride was melted and also added at 1 pph / min over 95 minutes. The ratio of monomer to initiator (M / I) was 100:1. After the monomer feed was complete, the reaction conditions were maintained at 90°C for...

Embodiment 3

[0119] This example describes the effect of the molar ratio of styrene / methacrylic acid (S / MAA) in the graft copolymer on the properties of blends of the graft copolymer with polyamide, BMWD PP and rubber.

[0120] The graft copolymer was prepared as described in Example 1. The graft copolymer was then blended with the materials listed in Table 3 as described in Example 1.

[0121] The BMWD PP, polyamide, impact modifier, and antioxidant are the same as those used in Example 1.

[0122] The samples were compounded as described in Example 1, the pellets were dried after extrusion and injection test bars were molded. The measured mechanical properties are listed in Table 2. N. Y=not determined

[0123] table 3

[0124] The data show that S / MAA with a molar ratio of 60 / 40 has the best comprehensive performance. Increasing the MAA content above 50 mole percent can make the blend of graft copolymer and polyamide brittle.

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
flexural modulusaaaaaaaaaa
flexural modulusaaaaaaaaaa
porosityaaaaaaaaaa
Login to View More

Abstract

A polymer blend contains: 1) about 1 % to about 98 % of a graft copolymer comprising a backbone of a propylene polymer material having graft polymerized thereto monomers selected from a) at least one vinyl aromatic compound and an unsaturated carboxylic acid and b) at least one vinyl aromatic compound and an anhydride of an unsaturated acid or its acid form, wherein the polymerized monomers are present in an amount of about 10 to about 95 parts per hundred parts of the propylene polymer material, and 2) about 99 % to about 2 % of at least one polyamide resin. The composition optionally also contains about 2 % to about 30 % of one or more rubber components, about 5 % to about 90 % of a broad molecular weight distribution propylene polymer material, or both.

Description

field of invention [0001] The present invention relates to compositions comprising graft copolymers of polyamide resins and propylene polymer materials. background of the invention [0002] Blends of two or more polymers are often made to, for example, combine the desired properties of the individual polymers in the blend, giving the blend unique properties, or by combining inexpensive polymers in blends to produce lower cost polymer products. Various methods have been used to blend polyamide resins (such as nylon-6 and nylon 6,6) and polyolefin materials. Polyamide resins have excellent chemical and abrasion resistance, good oxygen barrier properties, good electrical properties, and excellent mechanical strength, but are highly moisture sensitive and difficult to process due to high melting temperatures. Polypropylene is a low-cost, low-density semi-crystalline polymer with excellent moisture resistance, recyclability and easy processing. [0003] However, it is difficul...

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): C08J5/00C08F255/00C08F255/02C08L51/06C08L77/00C08L77/02C08L77/06
CPCC08L77/02C08L77/00C08L51/06C08L77/06C08F255/00C08L2666/14C08L2666/24C08L51/00C08L23/10
Inventor A·J·小德尼古拉T·T·M·范
Owner MONTELL TECH CO BV
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com