Water-soluble phenolic resin
What is water-soluble phenolic resin?
Our water-soluble phenolic resin is an anionic resin obtained by copolymerizing DHDPS (dihydroxydiphenyl sulfone) and a sulfonic acid compound such as phenolsulfonic acid.
Utilizing the strong electron-withdrawing properties and chemical stability of DHDPS's sulfonyl bonds, the high acidity of its hydroxyl groups, and its hydrogen bond strength, it is expected to be used in many applications.
We mass produce water-soluble phenol resin (product name: WSR-SP82), which is a copolymerization of DHDPS and phenolsulfonic acid at a ratio of 8:2.
Application examples
① Nylon fix agent
By using the ionic bond strength between the terminal amino group of the nylon fiber and the sulfonic acid group of the water-soluble phenol resin, and the hydrogen bond strength between the azo group of the acidic dye and the hydroxyl group of the water-soluble phenol resin, It is used.
Nylon fix agent dye fixation schematic diagram
② Cationic binder
By optimizing the molar ratio and molecular weight of DHDPS and sulfonic acid compounds,
we have found that it has high adhesion to substrates that do not have bonds such as
polyester and cellulose.
In addition to the hydrogen bond strength between the DHDPS hydroxyl group and the carbonyl
group or hydroxyl group of the base material, cross-linking (thermosetting) using a methylol
group at the end of the resol-type water-soluble phenolic resin shows high robustness.
Schematic diagram of binder function for cationic substances
Usage example (nylon fix agent)
Processing method
After dyeing nylon fiber with acid dye, acid dye is fixed with phenol resin.
process
Test equipment
- Infrared heating type rotating pot dyeing tester: Made by TEXAM Co., LTD. (UR; MINI-COLOR.V5)
- Auto mini setter: DAIEI KAGAKUSEIKI MFG.Co., LTD)
Test results
| Discoloration by fix processing | Laundry test (JIS-L-0844 A-2) | |||
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| Discoloration | Nylon | Rayon | ||
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| Our products DHDPS / DHDPS sulfonic acid novolak resin |
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| Our products DHDPS / phenol sulfonic acid-based resole resin |
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Usage example (cation dyeing treatment of regular polyester)
Processing method
As a pre-treatment, after fixing phenolic resin to regular polyester fiber, dye it with cationic dye.
process
Test equipment
- Infrared heating rotating pot dyeing tester: Made by TEXAM Co., LTD. (UR; MINI-COLOR.V5)
- Auto mini setter: DAIEI KAGAKUSEIKI MFG.Co., LTD)
Test results
| blank | Dyed cloth | Laundry test results JIS-L-0844 A-2 |
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| Estrol Yellow N-2RL 200% 1.0%o.w.f |
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| Estrol Red N-GSL 2.0%o.w.f |
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| Estrol Br.Blue N-RC(C) 2.0%o.w.f |
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Commercial Products
| Water Soluble Phenol Resins (WSR series) | ||
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ENCS | Registry No. 9-2533 |
| CAS | Registry No. 71832-81-0 | |
| EINECS | Registry No. 290-719-8(CAS:Registry No.90218-44-3) | |
| TSCA | registered | |
| Properties | ||
| Appearance | Light Brown | |
| pH | 9～10 | |
| Viscosity(25 ℃) | 100cps max. | |
| Solid content | 30% | |
| ※This product contains no acetic acid. | ||
Laboratory Products
| Phenolsulfonic acid resin |
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