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Silicone block copolymers having amino-functional end-capping groups and methods of making and using same

A block copolymer, amino functional technology, used in textiles and/or other fibers, in the field of hair treatment, which can solve the problems of time-consuming and expensive

Active Publication Date: 2021-08-17
DOW SILICONES CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Preparing them can be expensive and / or time-consuming

Method used

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  • Silicone block copolymers having amino-functional end-capping groups and methods of making and using same
  • Silicone block copolymers having amino-functional end-capping groups and methods of making and using same
  • Silicone block copolymers having amino-functional end-capping groups and methods of making and using same

Examples

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Embodiment

[0222] These examples are intended to illustrate the invention to those of ordinary skill in the art and should not be construed as limiting the scope of the invention described in the claims.

[0223] All measurements and experiments were performed at 23°C unless otherwise specified.

reference example 1

[0224] Reference Example 1: Synthesis of Allylamino Hydroxy by Amination with Bis(2-Hydroxypropyl)amine

[0225] Bis(2-hydroxypropyl)amine (DIPA) ( 79.17g) and isopropanol (37.29g) were heated to 5OC. Allyl glycidyl ether (70 g) was added dropwise to the reaction and the amination reaction was carried out at 70°C overnight (15 hours) to ensure complete consumption of DIPA. The reaction device is improved to a simple distillation device. Isopropanol and excess allyl glycidyl ether were removed from the product by vacuum stripping at 120°C and 20 mmHg for 3 hours. The sample was cooled to below 70°C before the vacuum was broken with nitrogen, and then the product was decanted into a glass jar after cooling.

Embodiment 2

[0226] Example 2: Hydrosilylation to (diisopropanolamine) terminated 400 degree of polymerization (DP) DIPA

[0227] A three-necked round-bottomed flask equipped with a reflux condenser, nitrogen purge, stirrer, temperature controller with thermocouple, and heating mantle was charged with the material prepared in Reference Example 1 (1.72% by weight) and a SiH seal. Terminated siloxane (14.24% by weight) with a SiH concentration of 1600 ppm (20DP) as determined by FT-IR. The flask was heated to 70°C and 1% Karstedt's catalyst in isopropanol (IPA) (5 ppm Pt) was added as catalyst. The reaction temperature was maintained at 70 °C for one hour until [SiH] reached 1000 ppm to 1100 ppm. Allyl terminated siloxane (84.04% by weight; 179 Dp) was then added to the reaction with 1% Karstedt's catalyst in IPA (5 ppm Pt). The reaction was maintained at 70°C for 2 hours. The reaction was determined to be complete ([SiH] < 10 ppm) using FT-IR analysis. The viscosity of the final produ...

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Abstract

The present invention discloses a silicone block copolymer having amino functional end-capping groups, which can be used in personal care applications, especially hair care. Methods for preparing the silicone block copolymers are also described.

Description

[0001] Cross references to related patent applications [0002] Pursuant to 35 U.S.C. §119(e), this application claims the benefit of U.S. Provisional Patent Application No. 62 / 334060, filed May 10, 2016. US Provisional Patent Application No. 62 / 334060 is hereby incorporated by reference. technical field [0003] Disclosed are silicone block copolymers having amino-functional end-capping groups, methods of making the copolymers, and the use of the copolymers for treating hair, textiles and / or other fibers. Background technique [0004] Silicones have been widely used in the treatment of hair, textiles and other fibers. In particular, various amine functional silicones have been developed and sold under various trade names. A common problem associated with amine-functional silicones treated as textiles is their yellowing of textiles due to oxidation of the amine groups and the extensive hydrophobicity of the polydimethylsiloxane chains. Efforts over the years have therefor...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G77/26A61Q5/02A61Q5/12C08G77/44C08G77/50D06M15/643
CPCA61Q5/02A61Q5/12A61K8/898C08G77/12C08G77/20C08G77/26C08G77/44C08G77/50D06M15/6436A61K8/062A61K2800/10A61K2800/31A61K2800/48A61K2800/5426
Inventor Q·冯B·哈克尼斯K·T·阮H·施密特N·萨斯艾旺查隆B·约翰逊
Owner DOW SILICONES CORP