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Plasticizer composition used for polyvinyl butyral and polyvinyl butyral composition

A polyvinyl butyral, composition technology, applied in the direction of layered products, chemical instruments and methods, glass/slag layered products, etc., can solve the adverse effects of glued glass, no durability, polyvinyl butyral film Inability to dissipate impact force, durability, etc.

Active Publication Date: 2012-07-25
CHANG CHUN PETROCHEMICAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

If it is outside this specific range, it cannot be compatible with too many plasticizers, and the obtained polyvinyl butyral film has high volatility at high temperature and has no durability. When the amount of plasticizer is too small, it cannot effectively make polyvinyl butyral plastic When it is melted, the obtained polyvinyl butyral film will not be able to dissipate the external impact force and take into account the durability, so when polyvinyl butyral is used to make laminated glass, it will have an adverse effect on the laminated glass

Method used

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  • Plasticizer composition used for polyvinyl butyral and polyvinyl butyral composition
  • Plasticizer composition used for polyvinyl butyral and polyvinyl butyral composition
  • Plasticizer composition used for polyvinyl butyral and polyvinyl butyral composition

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preparation example Construction

[0020] The polyvinyl butyral used in the present invention can be prepared by condensation reaction of polyvinyl alcohol with an average degree of polymerization of about 800 to 3000, preferably an average degree of polymerization of about 1000 to 2500, and butyraldehyde in the presence of a catalyst. are well known to those skilled in the art and therefore are not intended to limit the scope of the present invention.

[0021] The polyvinyl butyral used in the present invention obtained by the above method has a hydroxyl content of 15-30 wt%, preferably 15-25 wt%, most preferably 18-23 wt%.

[0022] The polyvinyl butyral composition of the present invention may contain other additives, and these additives are not particularly limited as long as they do not adversely affect the properties of the film made from the composition. Its non-limiting specific examples include, for example, ultraviolet absorbers such as benzotriazole series, Tinuvin.RTM.326, Tinuvin.RTM.320, Tinuvin.RT...

preparation example 1

[0029] Preparation Example 1: Preparation of polyvinyl butyral

[0030] Add 1000 kilograms of polyvinyl alcohol with a degree of polymerization of 1700 and a saponification value of 98.5mole% into 9000 liters of water, heat and dissolve, cool the solution to 16°C, add 115 kilograms of 35wt% hydrochloric acid and 590 kilograms of butyraldehyde for condensation reaction, and the reaction is maintained at 16°C until polyvinyl butyral precipitates out. Then the temperature was raised to 60°C. The reaction mixture was maintained at 60°C for 3 hours with stirring to complete the reaction. The polyvinyl butyral precipitate was washed with deionized water and then dried in a desiccator to obtain polyvinyl butyral with a hydroxyl content of 17.4 wt%.

preparation example 2

[0031] Preparation Example 2: Preparation of polyvinyl butyral

[0032] According to the method of Example 1, but with 550 kg of butyraldehyde instead of the amount of butyraldehyde in Example 1, polyvinyl butyral with a hydroxyl content of 21.8 wt% was obtained.

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Abstract

The invention discloses a plasticizer composition used for polyvinyl butyral and a polyvinyl butyral composition. The plasticizer composition comprises adipic acid bis(butyl diethylene glycol)ester having a formula (I) of C4H9-(OCH2CH2)2-O-C(=O)-(CH2)4-C(=O)-O-(CH2CH2O)2-C4H9 (I) and triethylene glycol dimethyl-(2-ethylhexyl acid)ester represented by a formula (II) of C4H9-CH(C2H5)-C(=O)-O-(CH2CH2O)3-C(=O)-CH(C2H5)-C4H9 (II). The plasticizer composition of the invention has high compatibility with the polyvinyl butyral, so the plasticizer composition can serve as a plasticizer in the polyvinyl butyral with a broader hydroxide radical content range.

Description

Technical field: [0001] The invention relates to a plasticizer composition, in particular to a plasticizer composition of polyvinyl butyral. Background technique: [0002] Typical polyvinyl butyral films can provide satisfactory mechanical properties, adhesive properties, encapsulation properties and film processability by means of plasticizers. Therefore, polyvinyl butyral can be widely used in the manufacture of laminated glass, and can be used in the automotive industry, construction and solar cells. [0003] In addition to providing the basic properties and safety of polyvinyl butyral as an interlayer of laminated glass, the plasticizer used in polyvinyl butyral film needs to consider the compatibility and durability of polyvinyl butyral resin. [0004] Choose a plasticizer with good compatibility with polyvinyl butyral resin to avoid adverse properties due to phase separation after processing. [0005] The volatility and migration of plasticizers have a serious impact...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08K5/11C08K5/103C08L29/14B32B17/06C03C27/12
Inventor 林育才蔡劲军何瑞庄
Owner CHANG CHUN PETROCHEMICAL CO LTD