Latex composition for dip molding, and molded product manufactured therefrom
A technology of dip molding and composition, applied to the latex composition used for dip molding, which can solve the physical properties of gloves (low tensile strength, elongation and modulus, long cross-linking aging of sulfur, glove denaturation, etc. problems, to achieve the effects of improved durability, improved syneresis, and good user experience
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
preparation example Construction
[0035] In the present invention, the preparation of the sodium polysulfide aqueous solution is not particularly limited, and can be prepared by methods known in the art. For example, the aqueous solution is prepared by dissolving sodium sulfide in distilled water to prepare a strongly alkaline aqueous solution, and then adding sulfur (S 8 ) powder [Macromol. Rapid Commun. 2015, 36, 1103-1107]. At this time, the concentration of the sodium polysulfide solution is preferably 5% by weight to 20% by weight in consideration of precipitation of sulfur in the aqueous solution.
[0036] This sodium polysulfide is used in an amount of 0.1 to 5 parts by weight, preferably 0.5 to 1 part by weight, relative to 100 parts by weight of the carboxylic acid-modified nitrile copolymer latex in terms of solid content. If the content of sodium polysulfide is less than the above-mentioned range, the above-mentioned effects cannot be ensured. On the contrary, if it exceeds the above range, synere...
Embodiment 1
[0091] Example 1: Preparation of Latex Compositions for Dip Molding and Dip Molded Articles
[0092] (Preparation of Carboxylic Acid Modified Nitrile Copolymer Latex)
[0093] A 10 L high pressure reactor equipped with a stirrer, thermometer, condenser and nitrogen inlet and configured for continuous addition of monomer, emulsifier and polymerization initiator was replaced with nitrogen. Thereafter, 2.5 parts by weight of alkane was added to the high pressure reactor with respect to 100 parts by weight of a monomer mixture of 25% by weight of acrylonitrile, 70% by weight of 1,4-butadiene and 5% by weight of methacrylic acid sodium benzenesulfonate, 0.5 parts by weight of t-dodecyl mercaptan, and 140 parts by weight of ion-exchanged water, and the temperature was raised to 48°C.
[0094] After raising the temperature, 0.25 parts by weight of potassium persulfate as a polymerization initiator was added. When the conversion rate reached 95%, the polymerization was terminated by...
Embodiment 2
[0103] Example 2: Preparation of Latex Compositions for Dip Molding and Dip Molded Articles
[0104] A latex composition for dip-molding was prepared in the same manner as in Example 1 except that hydrophilic sodium polysulfide was used in a proportion of 0.7 parts by weight, and a glove-shaped dip-molded article was prepared using it.
PUM
Property | Measurement | Unit |
---|---|---|
glass transition temperature | aaaaa | aaaaa |
particle size | aaaaa | aaaaa |
particle size | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
- R&D Engineer
- R&D Manager
- IP Professional
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com