Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

A carbodiimide composition with suppressed yellowing, a stabilizer against hydrolysis and a thermoplastic resin composition

A hydrolysis-resistant stabilizer and carbodiimide technology, applied in the direction of chemical change-inhibiting compositions, organic chemistry, chemical instruments and methods, etc., can solve the problems of carbodiimide compound coloring, which cannot be said to be very satisfactory, and achieve Excellent heat resistance, excellent hydrolysis resistance, effect of improving hydrolysis resistance

Active Publication Date: 2005-03-09
NISSHINBO IND INC
View PDF33 Cites 19 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] However, despite such a proposal, for applications that place importance on color tone (fibers, films, boards, etc.), there is a problem that the carbodiimide compound as a hydrolysis-resistant stabilizer is colored due to yellowing, and it cannot be said that it is completely satisfactory.

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
  • A carbodiimide composition with suppressed yellowing, a stabilizer against hydrolysis and a thermoplastic resin composition

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0128] Hereinafter, the present invention will be described in more detail using examples. In addition, the physical properties in the examples were measured and evaluated by the following methods.

[0129] [Yellow Index (YI)]

[0130] The yellowness index (YIo) was measured according to the measurement conditions of JIS K7103. In addition, NF333 manufactured by Nippon Denshoku Kogyo Co., Ltd. was used as the color difference meter for measuring color.

[0131] [Thermal discoloration]

[0132] YI after being left to stand in a dryer at 120° C. for 75 hours was measured and calculated by the following formula (1).

[0133] Formula (1): ΔYI=YI-YIo

[0134] [solar discoloration]

[0135] With respect to the sample piece of the test sample, under the conditions of xenon BPT 60° C.×humidity 50%, YI after an irradiation time of 500 hours was measured and calculated by the following formula (2).

[0136] Formula (2): ΔYI=YI-YIo

[0137] [hydrolysis resistance]

[0138] For the ...

Synthetic example 1

[0144] Add 100 parts by weight of 4,4'-dicyclohexylmethane diisocyanate and 3-methyl-1-phenyl-2-phosphine-1-oxide Carbodiimidization reaction was performed at 185° C. for 24 hours while bubbling nitrogen gas into 0.5 parts by weight of the compound. The NCO% of the obtained carbodiimide was 2.4.

Synthetic example 2

[0146] Add 100 parts by weight of 4,4'-dicyclohexylmethane diisocyanate and 3-methyl-1-phenyl-2-phosphine-1-oxide Carbodiimidization reaction was carried out at 185° C. for 24 hours while bubbling nitrogen gas with 0.5 parts by weight of the compound and 1 part by weight of bis(2,4-di-tert-butylphenyl)pentaerythritol diphosphite. The NCO% of the obtained carbodiimide was 2.4.

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
thicknessaaaaaaaaaa
yellowness indexaaaaaaaaaa
degree of polymerizationaaaaaaaaaa
Login to View More

Abstract

A carbodiimide composition having an improved heat resistance which had been a conventional requirement for a carbodiimide compound to be compounded in an ester-group-containing resin or a biodegradable plastic, exhibiting no coloring problems due to yellowing, and having more superior stabilizing effect against hydrolysis, a stabilizer against hydrolysis mainly comprising the carbodiimide composition and a thermoplastic resin composition containing the same. More specifically, a carbodiimide composition comprising a carbodiimide compound (A) and an antioxidant (B), having not lower than 250 DEG C of 5 % weight loss temperature as determined by a thermogravimetric (TG) method, wherein an antioxidant (B) is dispersed and present in the composition by admixing during synthesis of a carbodiimide compound (A), a stabilizer against hydrolysis mainly comprising the carbodiimide composition and a thermoplastic resin composition containing the same.

Description

field of invention [0001] The present invention relates to a carbodiimide composition for suppressing yellowing, a hydrolysis-resistant stabilizer containing it as a main component, and a thermoplastic resin composition containing it, and more specifically, to a carbodiimide compound and an antioxidant . A carbodiimide composition whose 5% weight loss temperature is not lower than 250° C. according to the thermogravimetric (TG) method, a hydrolysis-resistant stabilizer mainly composed of it, and a thermoplastic resin composition containing it. Background technique [0002] Carbodiimide compounds have a carbodiimide group represented by [-N=C=N-] in the molecule, which can react with active hydrogen (carboxylic acid, amine, alcohol, mercaptan, etc.), excellent adhesion, Excellent heat resistance, can be made into various forms (varnish, powder, film, etc.) tablets and other uses. [0003] However, carbodiimide compounds have a problem that the yellowness index of the compou...

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): C07C267/00C08K5/00C08K5/29C08L67/00C08L79/08C08L101/02C08L101/16C09K15/08C09K15/32
CPCC08L67/00C08L79/08C08L2666/20C08K5/29
Inventor 高桥郁夫饭田浩贵中村典雅
Owner NISSHINBO IND INC
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com