Preparation method of steaming-resisting and boiling-resisting poly(vinylidene chloride) (PVDC) waterborne emulsion

A water-based emulsion, retort-resistant technology, applied in flexible coverings, coatings, packaging, etc., can solve the problems of invisible packaged objects, food that has not been sterilized by high temperature, and limited shelf life
CN102924643AActive Publication Date: 2013-02-13ZHEJIANG QUZHOU JUSU CHEM IND CO LTD +1
3 Cites 15 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
ZHEJIANG QUZHOU JUSU CHEM IND CO LTD
Publication Date
2013-02-13

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The invention discloses a preparation method of steaming-resisting and boiling-resisting poly(vinylidene chloride) (PVDC) waterborne emulsion. The preparation method adopts a vinylidene chloride monomer and a comonomer to perform copolymerization in a polymerizing kettle, the vinylidene chloride monomer, the comonomer and an assistant are added in a staged mode, and the reaction temperature and the reaction time are controlled to synthesize the steaming-resisting and boiling-resisting PVDC waterborne emulsion. The steaming-resisting and boiling-resisting PVDC waterborne emulsion prepared by means of the method is suitable for coating of two-way stretching nylon membranes, manufactured coating membranes are good in barrier property and have a good water-boiling- 'whitening' resisting characteristic, and the coating membranes are transparent in appearance after boiled with water and can be widely applied to packing materials of water-boiled sterilized foods including fruits, vegetables, fresh meat and the like.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention relates to a method for preparing a PVDC copolymer emulsion, more specifically, the invention relates to a method for preparing a retort-resistant PVDC aqueous emulsion. Background technique

[0002] Polyvinylidene chloride (PVDC) polymer material, as a packaging material with good comprehensive barrier properties, is safe and non-toxic, and has a wide range of applications in the field of food packaging. The application technology of general-purpose PVDC emulsion in food coating film BOPP and BOPET film is mature. However, there are following deficiencies in the packaging of boiled fruits and vegetables and fresh food:

[0003] 1. The packaged food provided needs to be cooked and processed by consumers before they can be eaten, which is a waste of time;

[0004] 2. The food provided has not been sterilized by high temperature and has a limited shelf life;

[0005] 3. The packaging is opaque, and the packaged objects cannot be seen. ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More