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CAPA® HC grades have been developed for use in speciality water borne polyurethane dispersions. These products all contain two hydroxyl functions for reaction with isocyanates and a pendant carboxylic group which remains unchanged in this reaction and can be used to disperse the urethane. CAPA® HC grades are all low melting waxes, in comparison with DMPA which is a high melting solid. CAPA® HC grades can be used to replace all or part of DMPA in anionic polyurethane dispersions.
CAPA® polyols are used as a soft segment in water borne polyurethane dispersions. Typical applications are:
- Water Borne PU Adhesives
- Water Borne PU Coatings
The benefits benefits provided by CAPA® products are:
- Good high temperature resistance.
- Long open time.
- Good bond strength.
- Good hydrolysis resistance.
- Good adhesion to leather.
- Wide temperature performance.
DMPA Initiated CAPA HC Grades (26 KB)
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Influence of Initiator in PU Elastomers (135 KB)
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Molecular Weight of CAPA HC Grades (27 KB)
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Solvent Based 2K PU Formulation Guidelines for CAPA Polyols with Aliphatic Isocyanates (97 KB)
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The Development of a Polyester Copolymer used to Produce PU Elastomers with High Hydrolytic Stability & Ease of Processing, CAPA 7203 (120 KB)
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| CAPA 2200 |
2000MWt, NPG initiated diol with faster reactivity
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| CAPA 2302 |
3000MWt, BDO initiated diol with faster reactivity
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| CAPA 2402 |
4000MWT, BDO initiated diol with faster reactivity
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