| abstract |
The invention discloses a composite environment-friendly catalyst for polyester resin synthesis. The catalyst comprises stannous hydroxide and stannous oxalate. The stannous hydroxide in the environment-friendly composite catalyst provided by the invention has high catalytic activity, the synthetic polyester has high transparency, and has the effect of curing accelerator; Slightly turbid; stannous oxalate has a higher valence ratio than stannous hydroxide, adjust the appropriate ratio of stannous oxalate and stannous hydroxide, and try to increase the amount of stannous oxalate under the premise of clear and transparent polyester resin, so that the composite catalyst has higher Value for money. The composite environment-friendly catalyst is easy to prepare and does not need to adjust the polyester resin formula and process in the production of the polyester resin. The prepared polyester resin has no blooming substances, and satisfies the application fields of low temperature curing and no blooming. |