Preparation method for hydrolyzed silk protein paint

A technology for hydrolyzing fibroin and fibroin, which is applied in the preparation methods of peptides, protein coatings, chemical instruments and methods, etc., to achieve the effects of improving the hot stickiness and cold brittleness of resins, shortening the cross-linking curing time and soft hand feeling.

Active Publication Date: 2013-06-12
CHONGQING HANGFAN SILK TECH DEV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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  • Preparation method for hydrolyzed silk protein paint
  • Preparation method for hydrolyzed silk protein paint
  • Preparation method for hydrolyzed silk protein paint

Examples

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Embodiment 1

[0034] A method for preparing a hydrolyzed silk protein coating, which is prepared according to the following steps by using the following raw materials and the ratio of parts by weight:

[0035] (1) Hydrolyze silk, weigh 10 parts of silk, put the weighed silk into an enamel reactor, hydrolyze silk with 5.7N azeotropic hydrochloric acid at 80°C for 5 hours, then cool to room temperature, decolorize and remove impurities , filtered, dried into powder, dissolved in deionized water to make silk protein aqueous solution. Store for later use.

[0036] (2), the preparation of acrylic resin;

[0037] a. Pre-emulsification, add 40 parts of deionized aqueous solution with 2 parts of emulsifier into the reactor with agitator, condenser and thermometer, raise the temperature to 35 ° C, add 36.5 parts of butyl acrylate, 12.5 parts of methyl acrylate After mixing 1 part of acrylic acid and 0.5 part of diacetone acrylamide or ethyl acetoacetyl methacrylate, add the mixture dropwise to the r...

Embodiment 2

[0043] A method for preparing a hydrolyzed silk protein coating, which is prepared according to the following steps by using the following raw materials and the ratio of parts by weight:

[0044] (1) Hydrolyze silk, weigh 100 parts of silkworm cocoons (after stripping off pupal lining and cocoon clothing and remove impurities), put the weighed silkworm cocoons into an enamel reactor, and heat them with 5.7N azeotropic hydrochloric acid at 180°C Hydrolyze silkworm cocoons for 50 hours, then cool to normal temperature, decolorize, remove impurities, filter, dry into powder, dissolve with deionized water to make silk protein aqueous solution. Store for later use.

[0045] (2), the preparation of acrylic resin;

[0046] a. Pre-emulsification, add 40 parts of deionized aqueous solution with 6 parts of emulsifier into the reactor with agitator, condenser and thermometer, raise the temperature to 50 ° C, add 36.5 parts of butyl acrylate, 12.5 parts of methyl acrylate After mixing 1...

Embodiment 3

[0052] A method for preparing a hydrolyzed silk protein coating, which is prepared according to the following steps by using the following raw materials and the ratio of parts by weight:

[0053] (1) Hydrolyze silk, weigh 50 parts of silk, put the weighed cocoon or silk into the enamel reactor, hydrolyze the cocoon or silk with 5.7N azeotropic hydrochloric acid at 100°C for 30 hours, then cool to room temperature, Decolorization, impurity removal, filtration, drying into powder, dissolving with deionized water to make silk protein aqueous solution. Store for later use.

[0054] (2), the preparation of acrylic resin;

[0055] a. Pre-emulsification, add 40 parts of deionized aqueous solution with 4 parts of emulsifier into the reactor with agitator, condenser and thermometer, raise the temperature to 40 ° C, add 36.5 parts of butyl acrylate, 12.5 parts of methyl acrylate After mixing 1 part of acrylic acid and 1 part of diacetone acrylamide or ethyl acetoacetyl methacrylate, a...

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Abstract

The invention discloses a preparation method for hydrolyzed silk protein paint. The hydrolyzed silk protein paint is prepared from the following raw materials in parts by weight through the following steps of: (1), hydrolyzing silks; (2), preparing acrylic resins; and (3), preparing polyurethane to obtain the silk protein-polyurethane paint with the solid content of 20%-30%. According to the preparation method for the hydrolyzed silk protein paint disclosed by the invention, the characteristics including thermal viscosity, cold shortness, poor polishing performance and the like of the conventional resin are improved; and micromolecular acrylic resin and polyurethane prepolymer are used as cross-linking agents for carrying out cross-linking onto macromolecule silk protein to obtain the silk protein paint. The obtained product is green, environment-friendly, and strong in solvent resistance. Moreover, the paint has the excellent characteristics including the soft hand feeling and the like of the silk protein.

Description

technical field [0001] The invention relates to the field of coatings, in particular to a method for preparing hydrolyzed silk protein coatings. Background technique [0002] Polyurethane resins, acrylic resins, butadiene resins, and modified protein film-forming agents are often used as film-forming materials in coatings, among which acrylic resins and polyurethanes are the most used. Acrylic resin is synthesized by copolymerization of acrylate monomer and methacrylate monomer. The main absorption peak of acrylic resin is outside the solar spectrum range, so the prepared acrylic resin coating agent has excellent light resistance and Anti-aging properties. Polyurethane (referred to as PU) is a polymer made of polyisocyanate and polyether polyol or polyester polyol, small molecule polyol, polyamine or water and other chain extenders or crosslinking agents. Polyurethane products are widely used in automobile manufacturing, refrigerator manufacturing, transportation, civil en...

Claims

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Application Information

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IPC IPC(8): C09D175/08C09D189/00C08G18/64C08G18/62C08G18/48C08H1/00C08F220/18C07K1/12
Inventor 席星航王艳姣林云霞杨佩
Owner CHONGQING HANGFAN SILK TECH DEV
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