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US 12,503,631 B2Granted
Curable silicone pressure sensitive adhesive emulsion and method for its preparation
AssigneesDow Global Technologies LLC, Dow Silicones Corporation
InventorsQiangqiang Yan, Yunlong Guo, Wenjie Chen, Li Ding, Peng Gao, Yan Zhou, Zhihua Liu
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Abstract
A method for preparing a curable silicone pressure sensitive adhesive emulsion includes preparing a dispersion of benzoyl peroxide and a phenoxy-functional alcohol and thereafter combining the dispersion with the other starting materials of the emulsion.
Claims14
A method for preparing a curable silicone pressure sensitive adhesive emulsion, the method comprising:
- 1) preparing a dispersion comprising, based on the weight of the dispersion
- A) >0 to <55 weight % benzoyl peroxide;
- B) 0 to ≤25 weight % water;
- and
- C) >20 weight % a phenoxy-functional alcohol selected from the group consisting of 1-phenoxy-2-propanol and 2-phenoxyethan-1-ol;
- and
- 2) combining the dispersion with starting materials comprising
- D) a bis-hydroxyl-terminated polydiorganosiloxane gum;
- E) a polyorganosilicate resin;
- F) an alcohol ethoxylate surfactant;
- G) additional water;
- optionally H) a bis-hydroxyl-terminated polydiorganosiloxane polymer;
- optionally I) a solvent;
- and
- optionally J) a biocide.
12 more elements
Dependencies are inferred from the claim text.