Aminoalkyl side chain modified double-end amino polydimethylsiloxane and preparation method thereof

• Main Author: PENG HUAYONG
• Format: Patent
• Language: Chinese; English
• Published: 25.05.2016
• Subjects: CHEMISTRY; COMPOSITIONS BASED THEREON; HUMAN NECESSITIES; HYGIENE; MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS; MEDICAL OR VETERINARY SCIENCE; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; PREPARATIONS FOR MEDICAL, DENTAL, OR TOILET PURPOSES; SPECIFIC USE OF COSMETICS OR SIMILAR TOILETPREPARATIONS; THEIR PREPARATION OR CHEMICAL WORKING-UP

The invention provides an aminoalkyl side chain modified double-end amino polydimethylsiloxane which is prepared by carrying out catalytic polymerization on methylcyclosiloxane, aminoalkylsilane and an amino end sealer used as main raw materials under the action of an alkaline silanolate catalyst. The molecular weight and nitrogen content can be regulated according to needs; and thus, the preparation method has the advantages of high flexibility and high practicality. The invention also provides a preparation method of the aminoalkyl side chain modified double-end amino polydimethylsiloxane. The preparation method is simple and easy to implement, and can easily implement industrial production. By using the alkaline silanolate as the catalyst, the catalyst is cheap and accessible, and has the advantages of simple after-treatment technique and high operability.