Industrial Technology Research Institute

I-Min Tseng

Tung-Ying Kuo

Jih-Chen Huang

Wen-Chuan Shu

Jinn-Jong Wong

Chien-Shiun Liao

Sheng Te Yang

Chyuan Juang

Chia-Chang Lin

Wen-Tzong Liu

Wen-Chuan Hsu

Long-Shuen Jean

Hua-Tang Yue

Hua-Tang Yu

A method for preparing a phenol-formaldehyde resin is provided. The method includes extracting a biomass pyrolysis oil to obtain a first phenolic mixture, mixing the first phenolic mixture, furfural and an alkaline catalyst to proceed to a first polymerization reaction to form a phenol-formaldehyde resin precursor solution, and adding the alkaline catalyst to the phenol-formaldehyde resin precursor solution to proceed to a second polymerization reaction to form a phenol-formaldehyde resin solution. The disclosure also provides a resin material prepared from the phenol-formaldehyde resin. The disclosure further provides a method for preparing a resin molding material.

Method for preparing phenol-formaldehyde resins, resin materials and method for preparing resin molding materials

A high viscosity liquid is fed into a rotation pack bed at a position with a distance far enough from a rotation axis, creating a centrifugal force exerted on the high viscosity liquid overwhelming a drag thereof, so that it can flow radially through the rotation pack bed. A high pressure gas is introduced into the rotation pack bed peripherally and/or a suction force source is connected to a position near the rotation axis, so that a volatile component contained in the high viscosity fluid is entrained in the gas counter currently flowing through the rotation pack bed and withdrawn from the position near the rotation axis, or the volatile component exits from the position near the rotation axis in gas phase, and thus the volatile component is removed from the high viscosity liquid. A second fluid can also be fed into the rotation pack bed to react with the high viscosity liquid, so that a reaction product is formed, and a volatile side product is removed at the same time.

Method for removing volatile components from a high viscosity liquid by using rotation pack bed

The present invention provides a method for preparing polypropylene terephthalate/polyethylene terephthalate (PPT/PET) copolyester, which comprises a group of processes from (a) to (e). Process (a) comprises subjecting bis-2-hydroxyethyl terephthalate (BHET), pure terephthalic acid (PTA) and 1,3-propanediol (1,3-PDO) to undergo esterification reaction to produce BHET and bis-2-hydroxypropyl terephthalate (BHPT), and then subjecting BHET and BHPT to undergo copolymerization reaction. Process (b) comprises subjecting PTA and 1,3-PDO to undergo esterification reaction to produce BHPT, adding BHET, and then subjecting BHET and BHPT to undergo copolymerization reaction. Process (c) comprises subjecting BHET and BEPT to undergo copolymerization reaction. Process (d) comprises subjecting PTA, ethylene glycol (EG) and 1,3-PDO to undergo esterification reaction to produce BHET and BHPT, and then subjecting BHET and BHPT to undergo copolymerization reaction. Process (e) comprises subjecting BHPT, PTA and EG to undergo esterification reaction to produce BHPT and BHET, and then subjecting BHET and BHPT to undergo copolymerization reaction. The obtained preferred PPT/PET copolyester of the present invention has the following properties: intrinsic viscosity (IV)>0.6 dl/g, acid value (&mdash;COOH amount)<40 meq/kg, melting point&equals;190&deg; C.-250&deg; C., L*>60, and b*<12. Therefore, the PPT/PET copolyester of the present invention is suitable for use as fiber and engineering plastic.

Method for preparing polypropylene terephthalate/polyethylene terephtalate copolyester

The present invention provides a polyester fiber of easy dyeability. The propylene chain of polypropylene terephthalte (PPT) of easy dyeability is incorporated into the main chain of polyethylene terephthalate (PET), and a PPT/PET copolyester having both ethylene and propylene groups can thus be formed. The PPT/PET copolyester is then spun into a copolyester fiber. The copolyester fiber of the present invention can be successfully dyed with a disperse dye at a temperature below 100&deg; C. in the absence of a dye carrier.

Polyester fiber of easy dyeability

The present invention provides a novel poly(1,3-propylene terephthalate), which is prepared from reacting terephthalic acid and 1,3-propanediol in the presence of an effective catalytic amount of ethylene glycol titanate to undergo esterification to form a monomer; and polymerizing the monomer in the presence of an effective catalytic amount of antimony acetate to obtain poly(1,3-propylene terephthalate). The obtained poly(1,3-propylene terephthalate) (PPT) has an intrinsic viscosity (IV) of 0.65-0.91 dl/g, acid number (--COOH amount) of less than 40 meq/kg, and L*&gt;60. Without adding a pigment, the yellowness b* of PPT is below 9, even below 5. The yellowness b* of PPT even reaches below 3 when a pigment is incorporated.

Poly(1,3-propylene therephthalate)

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Nantou, Taiwan

I-Min Tseng