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Rosin modified composite resin and preparation method

A composite resin and rosin modification technology, applied in the field of rosin resin, can solve the problems of high risk, difficult price competition, high cost, etc., and achieve the effect of less process, lower production cost and sales price, and lower cost

Inactive Publication Date: 2012-07-04
NANJING HALIMA CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the rosin modified resin obtained by this process has been greatly improved in terms of color and performance, the price of the main raw material rosin (which has fluctuated greatly in recent years and was as high as 22,000 yuan / ton in early 2011) has a high cost and a high risk. Price competition with traditional raw materials petroleum resin and acrylic resin

Method used

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  • Rosin modified composite resin and preparation method
  • Rosin modified composite resin and preparation method
  • Rosin modified composite resin and preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Rosin modified composite resin formula: rosin 64g, fumaric acid 6g, pentaerythritol 12g, anti-3000.5g, DTBHQ0.5g, soybean oil 17g.

[0037] By the raw material of above-mentioned formula, prepare according to the following steps (full process is protected by nitrogen) rosin modified composite resin:

[0038] put the molten rosin into the reactor and raise the temperature to 160°C;

[0039] Add soybean oil, fumaric acid, anti-300;

[0040] After keeping warm for 30 minutes, add pentaerythritol, heat up to 270°C and keep warm;

[0041] After the sampling test is qualified, the pressure is reduced for 1 hour and then the temperature is lowered. When the temperature is lowered, 0.5g of DTBHQ is added.

Embodiment 2

[0043] Rosin modified composite resin formula: rosin 75g, maleic anhydride 4g, pentaerythritol 13g, anti-3000.5g, DTBHQ 0.5g, soybean oil fatty acid 7g.

[0044] By the raw material of above-mentioned formula, prepare according to the following steps (full process is protected by nitrogen) rosin modified composite resin:

[0045] put the molten rosin into the reactor and raise the temperature to 160°C;

[0046] Add soybean oil fatty acid, maleic anhydride, anti-300;

[0047] After keeping warm for 30 minutes, add pentaerythritol, heat up to 270°C and keep warm;

[0048] After the sampling test is qualified, the pressure is reduced for 1 hour and then the temperature is lowered. When the temperature is lowered, 0.5g of DTBHQ is added.

Embodiment 3

[0050] Rosin modified composite resin formula: rosin 70g, maleic anhydride 6g, pentaerythritol 13g, anti-300 0.5g, DTBHQ 0.5g, stearic acid 10g.

[0051] By the raw material of above-mentioned formula, prepare according to the following steps (full process is protected by nitrogen) rosin modified composite resin:

[0052] put the molten rosin into the reactor and raise the temperature to 160°C;

[0053] Add stearic acid, maleic anhydride, anti-300;

[0054] After keeping warm for 30 minutes, add pentaerythritol, heat up to 270°C and keep warm;

[0055] After the sampling test is qualified, the pressure is reduced for 1 hour and then the temperature is lowered. When the temperature is lowered, 0.5g of DTBHQ is added.

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Abstract

The invention discloses a rosin modified composite resin, which comprises the following raw materials in part by weight: 60 to 80 parts of rosin, 3 to 10 parts of conjugated polyprotic acid, conjugated polyanhydride or mixture of conjugated polyprotic acid and conjugated polyanhydride, 8 to 18 parts of polyol, 0.3 to 2 parts of pre-antioxidant, and 5 to 25 parts of vegetable oil, fatty acid or mixture of vegetable oil and fatty acid. The preparation method disclosed by the invention is to prepare rosin modified composite resin with high toughness, excellent film forming leveling property, high weather resistance and less pollution by subjecting raw materials to addition, esterification, ester exchange and other special modification reactions to increase the weather resistance and oxidation resistance of a resin structure. The preparation method can reduce production cost and environment pollution, and solve the problems of medium brittleness, poor leveling property, low weather resistance, and the like.

Description

technical field [0001] The invention relates to rosin resin, in particular to a rosin modified composite resin and a preparation method thereof. Background technique [0002] Rosin resin is a tackifying resin that is integral to the performance of road marking paints. In addition, road marking paint has high requirements for coating film-forming properties (leveling properties), weather resistance, abrasion resistance and color. With the continuous improvement of the quality requirements of road marking paint, its film forming and weather resistance are more and more concerned by users. However, road marking paints made of traditional rosin-modified resins have always had problems such as poor leveling, poor resin toughness, brittleness and fragility, and poor weather resistance. Although its weather resistance can be slightly improved by adding antioxidants such as optical stabilizers and DTBHQ (2,5-di-tert-butylhydroquinone), it is followed by cost increase and environme...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G63/52C08G63/56C08G63/78C08K5/13C08K5/375C09D167/08
Inventor 宋华陈金荣
Owner NANJING HALIMA CHEM
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