Wet-type high-peel-strength polyurethane resin and preparation method thereof

A polyurethane resin, high peeling technology, applied in textiles and papermaking, etc., can solve the problems of peeling strength limitation, insufficient bonding force of polyurethane resin and base fabric, etc., achieve the effect of reducing soft segment crystallization, reducing cohesion, and improving peeling strength
CN110698637AActive Publication Date: 2020-01-17HEFEI ANLI POLYURETHANE NEW MATERIAL
5 Cites 5 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
HEFEI ANLI POLYURETHANE NEW MATERIAL
Publication Date
2020-01-17
Patent Text Reader

Abstract

The invention discloses a wet-type high-peel-strength polyurethane resin and a preparation method thereof. According to the invention, a special polyester polyol is adopted; the difference of the special polyester polyol from the common adipic acid series polyester in that the polyester polyol has a soft segment structure, the flexibility of the soft segment part in the molecular chain is reducedand the rigidity is increased due to the rigid chain segment with a benzene ring in the polyester polyol, so that the polyurethane resin has excellent peel strength; the terephthalic acid dihydric diol structure of the polyester is similar to the molecular structure of the polyester cloth, so that the resin can be well combined with a cloth base during tanning; and based on the low flexibility ofthe terephthalic acid chain segment, the crystallization of the soft segment is reduced, so that the phase separation of the soft segment and the hard segment is reduced, the cohesion is reduced, thecurling degree during leather surface drying is reduced, and the leather surface flatness is improved.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention relates to the technical field of polyurethane synthetic leather, in particular to a wet-type high-peeling-strength polyurethane resin and a preparation method thereof. Background technique

[0002] Wet-process polyurethane synthetic leather is the best substitute product for the new generation of natural leather. It has excellent properties, such as good air permeability, moisture permeability, smooth and plump feel and excellent mechanical strength, especially from the structure similar to natural leather. , so its products are widely used in clothing, shoes, bags, car cushions, sofas and other fields.

[0003] Among them, high-stripping polyurethane synthetic leather is very popular in the sports shoe market, and has gradually replaced genuine leather to process sports shoes. Higher peel strength means that it can remain intact under harsher physical and mechanical impacts, so the pursuit of higher peel strength has always been a mark...

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