ES471862A1 - Procedimiento para la obtencion de perlas esfericas de un hidrogel insoluble en agua, reticulado - Google Patents

Procedimiento para la obtencion de perlas esfericas de un hidrogel insoluble en agua, reticulado

Info

Publication number
ES471862A1
ES471862A1 ES471862A ES471862A ES471862A1 ES 471862 A1 ES471862 A1 ES 471862A1 ES 471862 A ES471862 A ES 471862A ES 471862 A ES471862 A ES 471862A ES 471862 A1 ES471862 A1 ES 471862A1
Authority
ES
Spain
Prior art keywords
weight
hydrogel
water
monomer
relative
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
ES471862A
Other languages
English (en)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Novartis AG
Original Assignee
Ciba Geigy AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ciba Geigy AG filed Critical Ciba Geigy AG
Publication of ES471862A1 publication Critical patent/ES471862A1/es
Expired legal-status Critical Current

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08FMACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F290/00Macromolecular compounds obtained by polymerising monomers on to polymers modified by introduction of aliphatic unsaturated end or side groups
    • C08F290/02Macromolecular compounds obtained by polymerising monomers on to polymers modified by introduction of aliphatic unsaturated end or side groups on to polymers modified by introduction of unsaturated end groups
    • C08F290/06Polymers provided for in subclass C08G
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08FMACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F220/00Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride ester, amide, imide or nitrile thereof
    • C08F220/02Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
    • C08F220/10Esters
    • C08F220/20Esters of polyhydric alcohols or phenols, e.g. 2-hydroxyethyl (meth)acrylate or glycerol mono-(meth)acrylate
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08FMACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F291/00Macromolecular compounds obtained by polymerising monomers on to macromolecular compounds according to more than one of the groups C08F251/00 - C08F289/00

Landscapes

  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Macromonomer-Based Addition Polymer (AREA)
  • Medicinal Preparation (AREA)
  • Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
  • Polymerisation Methods In General (AREA)

Abstract

Procedimiento para la obtención de perlas esféricas de un hidrogel insoluble en agua, reticulado, sensiblemente unitarias, con hasta un tamaño de 5mm de diámetro, obtenido por polimerización en suspensión de (A) un 95-30% en peso del hidrogel procedente de un monómero, monoolefínico, soluble en agua o de una mezcla de estos monómeros solubles en agua u de un 0-70% en peso, referido a la cantidad total de monómeros, de monómeros insolubles en agua, con la condición de que el hidrogel final no contenga más del 60% en peso de compuestos monómeros insolubles en agua, con (B) 5 a 70% en peso del hidrogel de un agente reticulador poliolefínico, en presencia de un iniciador de la plimerización en una solución concentrada acuosa de una sal inorgánica, caracterizado porque la polimerización se efectua en suspensión con un monómero mono-olefínico, el cual contiene al menos un 5% en peso del monómero total de un monómero de vinilo hidrófilo, hidroxi-sustituido, empleándose como agente reticulador un macrómero poliolefínico con un peso molecular de 400 a 8000 y como medio de suspensión un 0,01 a 5% en peso, basado en el hidrogel, de dióxidos metálicos, o sales de dióxidos metálicos, insolubles en agua, de tipo gelatina, fuertemente retenedores de agua, inorgánicos, bajo ausencia de alcali en exceso o de hidrosiliones libres.
ES471862A 1977-07-20 1978-07-19 Procedimiento para la obtencion de perlas esfericas de un hidrogel insoluble en agua, reticulado Expired ES471862A1 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US81740477A 1977-07-20 1977-07-20

Publications (1)

Publication Number Publication Date
ES471862A1 true ES471862A1 (es) 1979-02-01

Family

ID=25223018

Family Applications (1)

Application Number Title Priority Date Filing Date
ES471862A Expired ES471862A1 (es) 1977-07-20 1978-07-19 Procedimiento para la obtencion de perlas esfericas de un hidrogel insoluble en agua, reticulado

Country Status (7)

Country Link
EP (1) EP0000507B1 (es)
JP (1) JPS5440891A (es)
AT (1) AT366066B (es)
CA (1) CA1136317A (es)
DE (1) DE2862045D1 (es)
DK (1) DK149002C (es)
ES (1) ES471862A1 (es)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4914170A (en) * 1987-11-17 1990-04-03 Rohm And Haas Company Superabsorbent polymeric compositions and process for producing the same
ATE154049T1 (de) * 1988-02-26 1997-06-15 Ciba Geigy Ag Benetzbares, biegsames, sauerstoffdurchlässiges, quellbares polymer mit polyoxyalkyleneinheiten in der hauptkette und kontaktlinse
AU638239B2 (en) * 1989-03-23 1993-06-24 Nippon Shokubai Co., Ltd. Crosslinked spherical fine particles and process for producing the same; coating composition and peelable pressure-sensitive adhesive containing said crosslinked spherical fine particles; and article containing them in the form of laminar composite
FR2759702B1 (fr) 1997-02-14 1999-04-02 Essilor Int Compositions polymerisables comprenant un oligomere urethane comme agent de reticulation, polymeres et polymeres hydrates obtenus a partir de ces compositions, et articles finis et semi-finis formes a partir de ces polymeres
JP2005526879A (ja) * 2002-03-11 2005-09-08 ファースト ウォーター リミテッド 吸収性ハイドロゲル
ATE416223T1 (de) * 2003-08-29 2008-12-15 Mayo Foundation Hydrogel-porenbildner zur herstellung von biologisch abbaubaren gerüsten
CA2587308A1 (en) 2004-11-12 2006-05-18 Mayo Foundation For Medical Education And Research Photocrosslinkable poly(caprolactone fumarate)
AU2006242487B2 (en) 2005-04-29 2011-12-01 Mayo Foundation For Medical Education And Research Hydrophilic/hydrophobic polymer networks based on poly(caprolactone fumarate), poly(ethylene glycol fumarate), and copolymers thereof

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2801992A (en) * 1953-08-19 1957-08-06 Distillers Co Yeast Ltd Suspension stabilizer of magnesium hydroxide and excess alkali
CH616694A5 (en) * 1974-06-27 1980-04-15 Ciba Geigy Ag Process for the preparation of crosslinked, water-insoluble, hydrophilic copolymers

Also Published As

Publication number Publication date
EP0000507B1 (de) 1982-09-29
EP0000507A1 (de) 1979-02-07
CA1136317A (en) 1982-11-23
DK322778A (da) 1979-01-21
ATA523278A (de) 1981-07-15
DE2862045D1 (en) 1982-11-11
JPS5440891A (en) 1979-03-31
JPS614401B2 (es) 1986-02-10
AT366066B (de) 1982-03-10
DK149002C (da) 1986-08-25
DK149002B (da) 1985-12-16

Similar Documents

Publication Publication Date Title
CA1056092A (en) Water swellable poly (alkylene oxide)
DE3067033D1 (en) Process for preparing an alkali acrylate polymer having high salt solution-absorbency and polymer produced thereby
JPS57158209A (en) Production of bead-form highly water-absorbing polymer
EP0364175A3 (en) Process for the preparation of water-soluble cationic polymer
CN108559108B (zh) 一种具有pH响应的三维互穿网络水凝胶的制备方法
EP0882502A4 (en) WATER ABSORBING PRODUCT AND METHOD FOR THE PRODUCTION THEREOF
GB1552060A (en) Process for producing fluorinated copolymer having ion-exchange groups
ES471862A1 (es) Procedimiento para la obtencion de perlas esfericas de un hidrogel insoluble en agua, reticulado
EP0233014A3 (en) Polymers and processes for their production from water soluble monomers
GB1334278A (en) Organic metal complex and process for its production
GB1466944A (en) Macroreticular vinyl benzyl chloride polymers
GR3019153T3 (en) Process for the suspension polymerization of 4-acetoxystyrene and hydrolysis to 4-hydroxystyrene polymers
ES8107258A1 (es) Un procedimiento para preparar un polimero de un compuesto de vinilo
ES8107257A2 (es) Un procedimiento de polimerizacion en suspensionde monomero de cloruro de vinilo
ES466003A1 (es) Procedimiento mejorado para la polimerizacion de monomeros de vinilo.
MX167103B (es) Procedimiento para preparar un polimero de cloruro de vinilo
KR850000476A (ko) 비이드상 폴리머 및 그의 제조법
JPS56103207A (en) Preparation of dried high-molecular weight water-soluble polymer
JPS6270401A (ja) カルボキシアルキルキトサン粒状体の製造方法
GB997174A (en) Water-soluble polymers and method of making same
CN112354004A (zh) 医用水凝胶及其制备方法和应用
JPS5529579A (en) Polymerization of vinyl chloride
US3553178A (en) Carbon dioxide as an ethylene polymer coagulant
GB752265A (en) Manufacture of polyvinyl chloride resin
ES8300806A1 (es) Procedimiento para la obtencion de polvos de caucho de libre fluidez.

Legal Events

Date Code Title Description
FD1A Patent lapsed

Effective date: 19990503