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Unsaturated polyesters

An unsaturated, polyester technology that is used in polyester coatings, chemical instruments and methods, polishing compositions, etc., and can solve problems such as accurate grading that has not yet been adopted

Inactive Publication Date: 2009-01-28
EVONIK DEGUSSA GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, precise grading has not yet been adopted

Method used

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  • Unsaturated polyesters
  • Unsaturated polyesters
  • Unsaturated polyesters

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0208] Embodiment 1 (polyester)

[0209] 3.3 mol tricyclodecane dimethanol mixture, 2.1 mol phthalic anhydride and 1.1 mol maleic anhydride were reacted in a reaction flask equipped with a distillation unit, a stirrer and a thermometer at 210° C. under a nitrogen atmosphere until reaching 15.9 mg KOH / g acid value and 36.0 mg KOH / g OH number.

[0210] m n =2100g / mol M w = 7200 g / mol, polydispersity = 3.4, glass transition temperature 62°C (no crystallization peak), as a 60% solution in xylene, viscosity 960 mPa·s, as a 60% solution in xylene , Garnder color value before / after heat load is 0.1 / 0.2, benzene content: <2mg / kg, formaldehyde content: <1mg / kg.

Embodiment 2

[0211] Embodiment 2 (polyester)

[0212] 5.3 mol tricyclodecane dimethanol mixture, 2.5 mol adipic acid and 2.5 mol maleic anhydride were reacted in a reaction flask equipped with distillation unit, stirrer and thermometer under nitrogen atmosphere at 210°C until 28 mg KOH / g acid value and 29 mg KOH / g OH number.

[0213] m n =2000g / mol M w =5200g / mol, polydispersity=2.6, glass transition temperature 9°C (no crystallization peak), as a 60% solution in xylene, viscosity 780mPa·s, as a 60% solution in xylene , Garnder color value before / after heat load is 0.1 / 0.1, benzene content: <2mg / kg, formaldehyde content: <1mg / kg.

[0214] The compatibility of the two inventive polyesters of Examples 1 and 2 was investigated. It has high compatibility with, for example, PVC, chlorinated rubber, nitrocellulose, ketone-aldehyde resins, alkyd resins, acrylate resins, polyesters, melamine resins, urea resins and polyisocyanates.

[0215]Resistance to yellowing under climatic conditions wa...

Embodiment 3

[0218] Embodiment 3 (polyester)

[0219] Put 9.9 mol tricyclodecane dimethanol mixture, 5.0 mol phthalic anhydride, 2.0 mol adipic acid and 3.0 mol maleic anhydride in a reaction flask equipped with a distillation unit, a stirrer and a thermometer at 210 ° C under a nitrogen atmosphere The reaction was carried out until the acid value of 32mgKOH / g and OH number of 27mgKOH / g were reached.

[0220] m n =2000g / mol M w =5900g / mol, polydispersity=3.0, glass transition temperature 46°C (no crystallization peak), as a 60% solution in xylene, viscosity 850mPa·s, as a 60% solution in xylene , Garnder color value before / after heat load is 0.1 / 0.2, benzene content: <2mg / kg, formaldehyde content: <1mg / kg.

[0221] The polyester of the present invention thus prepared was melted at about 120° C. in a closed container, mixed with dimethylethanolamine corresponding to a degree of neutralization of 1.0, and water was supplied, and vigorously stirred. Cooling to room temperature provided a ...

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Abstract

The present invention relates to unsaturated polyesters, more specifically to yellowing-resistant, low-viscosity, unsaturated, amorphous polyesters which are very substantially free of benzene and formaldehyde, and to a process for preparation thereof and to the use thereof as an adhesive component in coating compositions. The yellowing-resistant, low-viscosity, unsaturated, amorphous polyesters are composed of acid components and alcohol components, which is characterized in that based on the polyesters, the content of benzene is lower than 10mg / kg and the content of formaldehyde is lower than 10mg / kg; the molecular weight distribution polydispersity of the polyesters is 1.3-4.5; the content of tricyclodecane(mono- / di-)aldehyde in the bis(hydroxymethyl)tricyclo compound C) is lower than 2 weight percent; mono(hydroxymethyl)tricyclo [5.2.1.0<2,6>] decane in the compound C) is lower than 10 weight percent; and the content of chromium, nickel, copper, cadmium and plumbum in the compound C) is lower than 2mg / kg.

Description

technical field [0001] The present invention relates to anti-yellowing, low viscosity, unsaturated amorphous polyesters substantially free of benzene and formaldehyde, a process for their preparation, and their use as a binder component in coating compositions, said coating compositions For example on metal, mineral substrates or on substrates consisting of wood and plastics, so that the adhesion of these coating compositions is improved even under harsh ambient conditions. Background technique [0002] Unsaturated polyester resins (UP resins) are known. They are prepared by condensing saturated and unsaturated dicarboxylic acids or their anhydrides with diols. Its properties largely depend on the nature and quantity ratio of raw materials. [0003] As carriers for polymerizable double bonds, α,β-unsaturated acids are generally used, mainly maleic acid and / or its anhydride or fumaric acid; unsaturated diols are not critical. The higher the double bond content, in other wo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G63/52C08G63/78C09D167/06C09J167/06C09K3/10C09D11/10C09D11/16C09D17/00C09G1/16A61K8/85
CPCC09D167/06C09J167/06C08G63/553
Inventor P·格洛克纳A·韦宁
Owner EVONIK DEGUSSA GMBH
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