| 摘要 |
New water base pressure sensitive adhesives with capability of use in production of high temperature quality masking tape are aqueous dispersions of the following mixture of components in the percentages by weight as specified: - Component Percentage - Adhesive entity 45 to 65 - Tackifier resin 20 to 40 - Plasticizer 1 to 20 - Stabilizer 0.1 to 10 - Curing entity 0.1 to 10 - Optional additives 0 to 20 - The various components constitute the disperse phase of the aqueous dispersion and have a combined weight of between about 30 to 70% of the total weight, the curing entity is a combination of a plurality of curing agents that exhibit different curing speeds and the adhesive entity is a combination of a plurality of adhesive elastomers having different molecular weights. High temperature quality masking tapes made from the new PS adhesives avoid "freeze down" and "ghosting".
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