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Rosin esters and compositions thereof

A technology of rosin ester and rosin, which is applied in the direction of explaining cards, instruments, and chemical modification of natural resin, etc., and can solve the problems of rosin ester not having proper performance, poor oxidation stability, etc.

Inactive Publication Date: 2019-12-17
ARIZONA CHEM CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Although suitable for many applications, many existing rosin esters do not have suitable properties for specific applications
In particular, many commercially available rosin esters are colored (e.g. yellow or tan) and exhibit poor oxidation stability

Method used

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  • Rosin esters and compositions thereof
  • Rosin esters and compositions thereof
  • Rosin esters and compositions thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0099] general method

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Abstract

Rosin esters are provided. The rosin esters can exhibit improved color (e.g., the rosin esters can have a pure Gardner color of 8.5 or less), improved oxidation stability (e.g., when 1000 ppm or less of an antioxidant is combined with the In the presence of a combination of rosin esters, the rosin ester is capable of exhibiting an oxidation induction time of at least 75 minutes at 130°C), improved color stability (e.g., the rosin ester is heated to a temperature of 160°C for a period of 3 hours capable of exhibiting less than 10% pure Gardner color change), or a combination thereof. Also provided are polymeric compositions comprising the rosin esters and methods of making the rosin esters.

Description

technical field [0001] This application relates generally to rosin esters and methods of making and using them. Background technique [0002] Rosin esters, including those derived from polyols, have been known for over 50 years (see, eg, US Patent No. 1,820,265 to Bent et al.). Rosin esters are generally derived from rosin (which is primarily an isomeric C 20 tricyclic monocarboxylic acid) with an alcohol such as glycerol or pentaerythritol. The resulting rosin esters are used as additives in a variety of applications including, for example, as tackifiers in hot melt and pressure sensitive adhesives, modifiers for rubber and various plastics, emulsifiers for synthetic rubbers , the base material for chewing gum, resins in coating compositions such as traffic paints and inks, and sizing agents for papermaking. [0003] While suitable for many applications, many existing rosin esters do not possess suitable properties for particular applications. In particular, many commer...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09F1/04C08L93/04
CPCC08L93/04C09F1/04C08K5/01G09F1/04
Inventor 保罗·A·威廉斯劳埃德·A·纳尔逊
Owner ARIZONA CHEM CO
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