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Method for preparing resin with good low temperature fluidity

A low-temperature fluidity and resin technology, applied in the field of petrochemical industry, can solve the problems of insufficient penetration of carcass and tread rubber of retreaded tires, affect the bonding effect of carcass and tread, and poor fluidity, so as to achieve self-adhesive and mutual Excellent viscosity, improved internal quality, and good low-temperature fluidity

Active Publication Date: 2010-04-07
QINGDAO HAIJIA AJUVANTS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] For many years, because the resin used in the preparation of the "middle pad rubber" of retreaded tires is relatively hard and generally viscous, the hardness of the "middle pad rubber" produced is too high, and its fluidity is poor when used at low temperatures (50-60°C). The penetration of the tire carcass and tread rubber to the retreading is not enough, and it is necessary to spray glue on the tread and carcass to assist bonding during retreading, which affects the bonding effect between the carcass and the tread

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Embodiment 1: prepare a kind of resin with good low-temperature fluidity, the steps are as follows:

[0018] 1) Synthesis of rubber low-temperature fluidity polymer system: Take 1000 grams of styrene-indene-rich fraction, 0.1 grams of aluminum trioxide, stir and react at -25°C for 38 hours, and constantly fill in protective gas CO during the reaction 2 After completion of the reaction, 1 gram of methanol was added at a temperature of -15°C, stirred at a constant temperature for 3 hours, and after standing for 12 hours, the lower layer liquid was removed, and the residual fraction was removed by distillation at 200-220°C to obtain 700 grams of iodine Viscous liquid flowing at room temperature with a price of 155;

[0019] 2) Synthesis of bipolar resin: take 400 grams of octylphenol resin, 20 grams of rare earth chloride, 200 grams of methanol, and 200 grams of toluene, mix and stir for 4 hours, and obtain solid resin after removing methanol and toluene;

[0020] 3) Synt...

Embodiment 2

[0023] Embodiment 2: prepare a kind of resin with good low-temperature fluidity, the steps are as follows:

[0024] 1) Synthesis of rubber low-temperature fluidity polymer system: take 1000 grams of styrene-indene-rich fraction, 0.1 grams of aluminum trioxide, stir and react at -15°C for 48 hours, and constantly fill in protective gas CO during the reaction 2 After completion of the reaction, 1 gram of methanol was added at a temperature of -15°C, stirred at a constant temperature for 2 hours, and after standing for 8 hours, the lower layer liquid was removed, and the residual fraction was removed by distillation at 200-220°C to obtain 780 grams of iodine Viscous liquid flowing at room temperature with a price of 195;

[0025] 2) Synthesis of bipolar resin: take 400 grams of octylphenol resin, 20 grams of rare earth chloride, 200 grams of methanol, and 200 grams of toluene, mix and stir for 6 hours, and obtain solid resin after removing methanol and toluene;

[0026] 3) Synth...

Embodiment 3

[0029] Embodiment 3: prepare a kind of resin with good low-temperature fluidity, the steps are as follows:

[0030] 1) Synthesis of rubber low-temperature fluidity polymer system: take 1000 g of styrene-indene-rich fraction, 0.1 g of aluminum trioxide, stir and react at -20°C for 43 hours, and constantly fill in protective gas CO during the reaction 2 After completion of the reaction, 1 gram of methanol was added at a temperature of -15°C, stirred at a constant temperature for 2 hours, and after standing for 10 hours, the lower layer liquid was removed, and the residual fraction was removed by distillation at 200-220°C to obtain 740 grams of iodine Viscous liquid flowing at room temperature with a price of 175;

[0031] 2) Synthesis of bipolar resin: take 400 grams of octylphenol resin, 20 grams of rare earth chloride, 200 grams of methanol, and 200 grams of toluene, mix and stir for 5 hours, and obtain solid resin after removing methanol and toluene;

[0032] 3) Synthesis of...

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Abstract

The invention discloses a method for preparing a resin with good low temperature fluidity, which is implemented by the steps of: 1) mixing cut fraction rich in styrene-indene with dication catalyst and reacting, adding methanol after finishing reaction, standing for layering, taking the liquid of the lower layer, and distilling to obtain fluid sticky liquid; 2) mixing octyl group phenols resin, rare earth chloride, methanol and toluol and reacting when stirring, and removing methanol and toluol to obtain solid resin; and 3) mixing the sticky liquid, the solid resin, alkyne resin and white carbon black for reacting to obtain the resin with good low temperature fluidity. The inventive resin has good low temperature fluidity and stickiness, is applicable for production of wedge, and can realize bonding of tyre body and tyre surface; the vulcanization of wedge is not influenced in the process of vulcanizing the tyre in overhauling, the low temperature fluidity of the middle wedge is good, self-stickiness and mutual stickiness are excellent, and the inner quality of the tyre in overhauling is improved.

Description

technical field [0001] The invention relates to a preparation method of a resin with good low-temperature fluidity, belonging to the technical field of petrochemical industry. Background technique [0002] For many years, because the resin used in the preparation of the "middle pad rubber" of retreaded tires is relatively hard and generally viscous, the hardness of the "middle pad rubber" produced is too high, and its fluidity is poor when used at low temperatures (50-60°C). The penetration of the tire carcass and tread rubber to the retreading is not enough. During the retreading, it is necessary to spray glue on the tread and carcass to assist bonding, which affects the bonding effect between the carcass and the tread. Contents of the invention [0003] Aiming at the above-mentioned prior art, the present invention provides a method for preparing a resin with good low-temperature fluidity. The resin prepared by this method can be used in the production of rubber pads, ha...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L57/02C08L61/06C08K3/36C08F240/00C08F4/14
Inventor 宫相勤纪奎江宋伟徐伟韩涛
Owner QINGDAO HAIJIA AJUVANTS
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