Hydrophilic ampholytic polymer

An amphoteric polymer, hydrophilic technology, applied to new hydrophilic amphoteric polymers, cleans, transports to the blood stream, learns or improves viscosity, can solve problems affecting drug absorption, and achieve improved adhesion , Antistatic adhesion effect

Inactive Publication Date: 2002-02-06
PMD控股公司
View PDF13 Cites 42 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Some compounds are known to affect the absorption of drugs by assisting the opening of these junctions

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0154] Preparation of HEMA / DMAPMA / MAA Amphoteric Polyelectrolytes in Solvent Mixtures

[0155] Reagent name

[0156] The solvent used was a mixture of two solvents ethyl acetate and cyclohexane. The surfactant used was a nonionic block copolymer surfactant sold under the tradename Hypermer by ICI Surfactants, Wilmington, DE.

Embodiment 2

[0158] Preparation of HEMA / DMAPMA / MAA Amphoteric Polyelectrolytes in Solvent Mixtures

[0159] Reagent name

Embodiment 3

[0161] Preparation of HEMA / DMAPMA / MAA / DMAAm Amphoteric Polyelectrolytes in Solvent Mixtures

[0162] Reagent name

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
glass transition temperatureaaaaaaaaaa
glass transition temperatureaaaaaaaaaa
Login to view more

Abstract

A novel hydrophilic ampholytic polymer synthesized by reacting polymerizable amino and carboxy functional ethylenically unsaturated monomers, together with a non-ionic hydrophilic monomer, to provide a polymer having a glass transition temperature (Tg) above about 50 DEG C, and optionally hydrophobic monomer(s), and cross-linking monomer(s). The copolymer is precipitated from a polymerization media which includes a suitable organic solvent. The resulting copolymer is in the form of a fine powder, with submicron particle size. As such it is suitable for use as a thickener or rheology modifier in personal care formulations, such as shampoo, conditioner, and the like, as a bioadhesive, and for other pharmaceutical applications.

Description

Background of the invention [0001] The present invention relates to a new hydrophilic amphoteric polymer. Hydrophilic polymers can associate with water, have an affinity for water, and dissolve in water. Amphoteric polymers or amphoteric polyelectrolytes are polymers having both cationic and anionic groups. Uses of the polymers of the invention are as rheology modifiers in cationic and low pH (acidic) systems, as bioadhesives, as agents for removing bile salts and inhibiting enzymes, and as phosphate binding agents. agent. [0002] Amphoteric polymers are well known. For example, US Patent Nos. 5,286,827, 5,216,098, 5,130,391, 5,116,927 and 5,075,399 teach superabsorbent crosslinked zwitterionic pair copolymers in powder form for incorporation into infant diapers. The amphoteric nature of the polymer facilitates the absorption of urine. [0003] Polymers useful as rheology modifiers or thickeners include nonionic, cationic, anionic, and associative thickeners. Nonionic p...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): A61K8/00A61K8/81A61K31/785A61K31/79A61K47/32A61P1/16A61P3/12A61P3/14A61P5/18A61P9/14A61P19/10A61P43/00A61Q5/02A61Q5/12A61Q11/00C08F220/00C08F220/28C08F220/34C08F220/56C08F226/00C08F226/06C09D157/12C11D3/20C11D3/37C11D17/08
CPCC08F220/34A61K2800/5428C08F226/06C08F220/56D06M15/263D06M15/267A61K8/8182C08F220/28A61Q5/02A61K47/32A61K8/8158A61Q5/12A61P1/16A61P3/12A61P3/14A61P5/18A61P9/14A61P19/10A61P43/00C08F220/20C08F220/04
Inventor R·加莱桂洛斯J·A·布德莱维奇J·A·奇阿莱里H·B·巴希纳Z·阿姆扎德
Owner PMD控股公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap