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US 2025/0051589 A1Published application
Coating composition for siliconization application
AssigneesDuPont Technology (Shanghai) Co., Ltd., Dupont Electronic Materials International, LLC
InventorsXiaoman Qi, Jian Lyu, Chen-Yang Shiang, Xiaogang Ma
Life of this patent
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Abstract
Provided herein is an organic solvent to solve silicone polymer, to coat the silicone polymer on at least a portion of the surface of an article such as needles, syringes, stoppers and medicine bottles.
Claims10
A coating composition comprising:
- (i) about 90-about 99 wt % of an organic solvent comprising:
- (a) about 25-about 50 wt % of hexamethyl disiloxane and
- (b) about 50-about 75 wt % of 1,1,1,4,4,4-hexafluoro-butene, and
- (ii) about 1-about 10 wt % of a silicone polymer.
1 more element
An organic solvent to solve a silicone polymer represented by the formula (I);
- (R1R2R3)3Si—O—[Si(R4)(R5)O]m—[Si(R6)(R7)O]n—Si(R8R9R10)3 (I)
- wherein R1-R10 are respectively selected from alkyl group having 1 to 4 carbon atoms, H, OH, phenyl, vinyl, alkoxy, ON═C, CH2(O)CHCH2OCH2CH2CH2, CH2CH2CH2NH2, CH2CH2CH2NHCH2CH2NH2 and OCOCH3,
- in which the organic solvent comprises:
- (a) about 25-about 50 wt % of hexamethyl disiloxane and
- (b) about 50-about 75 wt % of 1,1,1,4,4,4-hexafluoro-butene.
2 more elements
A method of forming a silicone polymer coating on at least a portion of a surface of an article, the method comprising the steps of:
- (i) preparing an organic solvent comprising:
- (a) about 25-about 50 wt % of hexamethyl disiloxane and
- (b) about 50-about 75 wt % of 1,1,1,4,4,4-hexafluoro-butene,
- (ii) mixing a silicone polymer and the organic solvent for about 1 to about 60 minutes to get a coating composition, then
- (iii) applying the coating composition on the surface of the article.
2 more elements
Dependencies are inferred from the claim text.