DE1251320B - Ver drive for the production of hydroxymethylsiloxanes - Google Patents

Ver drive for the production of hydroxymethylsiloxanes

Info

Publication number
DE1251320B
DE1251320B DENDAT1251320D DE1251320DA DE1251320B DE 1251320 B DE1251320 B DE 1251320B DE NDAT1251320 D DENDAT1251320 D DE NDAT1251320D DE 1251320D A DE1251320D A DE 1251320DA DE 1251320 B DE1251320 B DE 1251320B
Authority
DE
Germany
Prior art keywords
formula
hydroxymethylsiloxanes
production
acid
ver drive
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.)
Pending
Application number
DENDAT1251320D
Other languages
German (de)
Inventor
Odenthal-Schlmghofen Dr Hans Niederprum Monheim Dr Wa' ter Simmler (RhId) Dr Hans Sattlegger, Koln-Buchheim
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.)
Bayer AG
Original Assignee
Bayer 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.)
Publication date
Publication of DE1251320B publication Critical patent/DE1251320B/en
Pending legal-status Critical Current

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Classifications

    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07FACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
    • C07F7/00Compounds containing elements of Groups 4 or 14 of the Periodic Table
    • C07F7/02Silicon compounds
    • C07F7/08Compounds having one or more C—Si linkages
    • C07F7/0834Compounds having one or more O-Si linkage
    • C07F7/0838Compounds with one or more Si-O-Si sequences
    • C07F7/0872Preparation and treatment thereof
    • C07F7/0874Reactions involving a bond of the Si-O-Si linkage
    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07FACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
    • C07F7/00Compounds containing elements of Groups 4 or 14 of the Periodic Table
    • C07F7/02Silicon compounds
    • C07F7/08Compounds having one or more C—Si linkages
    • C07F7/0834Compounds having one or more O-Si linkage
    • C07F7/0838Compounds with one or more Si-O-Si sequences
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08GMACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G77/00Macromolecular compounds obtained by reactions forming a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon in the main chain of the macromolecule
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08GMACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G77/00Macromolecular compounds obtained by reactions forming a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon in the main chain of the macromolecule
    • C08G77/04Polysiloxanes
    • C08G77/14Polysiloxanes containing silicon bound to oxygen-containing groups

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Health & Medical Sciences (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Catalysts (AREA)
  • Silicon Polymers (AREA)

Description

BUNDESREPUBLIK DEUTSCHLAND Int. Cl.:FEDERAL REPUBLIC OF GERMANY Int. Cl .:

C07fC07f

DEUTSCHESGERMAN

PATENTAMTPATENT OFFICE

AUSLEGESCHRIFTEDITORIAL

Deutsche Kl.: 12 ο-26/03German class: 12 ο-26/03

Nummer:
Aktenzeichen:
Anmeldetag:
Auslegetag:
Number:
File number:
Registration date:
Display day:

C07 F C07FC07 F C07F

1 251 320
F47467lVb/12o
20. Dezember 1965
5. Oktober 1967
1 251 320
F47467lVb / 12o
December 20, 1965
5th October 1967

7/ 08 + 7 / 187/08 + 7/18

.k.k

Gegenstand des Patents 1 236 505 ist ein Verfahren zur Herstellung von Hydroxymethylsiloxanen mit mindestens einer Struktureinheit der FormelThe subject of the patent 1 236 505 is a process for the production of hydroxymethylsiloxanes with at least one structural unit of the formula

HO-CH4-Si(CH^-(V1n HO-CH 4 -Si (CH ^ - (V 1n

worin /« = ! oder 2, und gegebenenfalls weiteren Struktureinheiten der Formelwhere / «=! or 2, and possibly others Structural units of the formula

worin η = 1, 2 oder 3 und jeder der Substituenten R ein Methyl- oder Phenylrest ist, durch Umestern der Acylreste von acyloxymethylsubstituierten Organosiliciumverbindungen mit einem Überschuß eines Alkohols in Gegenwart katalytischer Mengen einer Säure, das dadurch gekennzeichnet ist, daß man Acyloxymethylsiliciumverbindungen mit mindestens einer Struktureinheit der Formelwhere η = 1, 2 or 3 and each of the substituents R is a methyl or phenyl radical, by transesterification of the acyl radicals of acyloxymethyl-substituted organosilicon compounds with an excess of an alcohol in the presence of catalytic amounts of an acid, which is characterized in that acyloxymethylsilicon compounds with at least one Structural unit of the formula

(CH3)mSlR 3~m (CH 3 ) mSlR 3 ~ m

CH2-O-C- R'CH 2 -OC- R '

worin R' für H oder CH3 und R" für -OCH3, -OC2H5, -OC3H7,wherein R 'for H or CH 3 and R "for -OCH 3 , -OC 2 H 5 , -OC 3 H 7 ,

— O — C — R'- O - C - R '

oder — Oj/2 steht und im Falle R" == Οχ/2 gegebenenfalls weiteren Struktureinheiten der Formelor - Oj / 2 and, in the case of R ″ == Ο χ / 2, optionally further structural units of the formula

Verfahren zur Herstellung von
Hydroxymethylsiloxanen
Process for the production of
Hydroxymethylsiloxanes

Zusatz zum Patent: 1 236 505Addendum to the patent: 1 236 505

Anmelder:Applicant:

Farbenfabriken Bayer Aktiengesellschaft,Paint factories Bayer Aktiengesellschaft,

LeverkusenLeverkusen

Als Erfinder benannt:Named as inventor:

Dr. Walter Simmler, Odenthal-Schlinghofen;
Dr. Hans Niederprüm, Monheim (RhId.);
Dr. Hans Sattlegger, Köln-Buchheim
Dr. Walter Simmler, Odenthal-Schlinghofen;
Dr. Hans Niederprüm, Monheim (RhId.);
Dr. Hans Sattlegger, Cologne-Buchheim

Gegenstand des Hauptpatents ist weiterhin eine a5 Ausführungsform, die dadurch gekennzeichnet ist, daß man im Falle, daß mindestens einer der Reste R" die Formel -OCH3, -OC2H5, -OC3H7 oder — O — C(= O) — R' hat, die Umsetzung in Gegenwart von kondensationsfähigen Organosiliciumverbindungen mit mindestens einer Struktureinheit der FormelThe main patent is also an a 5 embodiment, which is characterized in that in the case that at least one of the radicals R "has the formula -OCH 3 , -OC 2 H 5 , -OC 3 H 7 or - O - C ( = O) - R 'has the reaction in the presence of condensable organosilicon compounds with at least one structural unit of the formula

worin a = 4 oder (m + 2) ist, und gegebenenfalls weiteren Struktureinheiten der Formelwhere a = 4 or (m + 2), and optionally further structural units of the formula

im Gemisch mit 5 bis 20 Mol Methanol oder Äthanol je Mol R' und einer katalytischen Menge p-Toluolsulfonsäure auf Temperaturen unterhalb 10O0C unter gleichseitigem Abdestillieren des dabei entstehenden Estert der Formelin admixture with 5 to 20 moles of methanol or ethanol per mole of R 'and a catalytic amount of the resulting esterified p-toluenesulfonic acid at temperatures below 10O 0 C under equilateral distilling off of the formula

R'C(O)OCH3 oder R7C(O)OC2H5 R'C (O) OCH 3 or R 7 C (O) OC 2 H 5

erhitzt und dabei gegebenenfalls die zur vollständigen Hydrolyse und Siloxankondensation stöchiometrisch erforderliche Menge Wasser während der Reaktion zufügt, worauf man die p-Toluolsulfonsäure mit einem Überschuß alkoholischer Kalilauge neutralisiert, das dabei ausgefallene Salz abfiltriert, das Filtrat unter Durchleiten von Kohlendioxyd bei 20 bis 300C durch Absaugen von flüchtigen Anteilen befreit und das hinterbliebene Endprodukt klarfiltriert.heated and optionally the stoichiometrically required amount of water for complete hydrolysis and siloxane condensation is added during the reaction, whereupon the p-toluenesulfonic acid is neutralized with an excess of alcoholic potassium hydroxide, the precipitated salt is filtered off, the filtrate is passed through at 20 to 30 ° C. freed of volatile components by suction and the remaining end product is filtered clear.

R»SiO4_„R »SiO 4 _"

durchführt.performs.

Gegenstand des Hauptpatents ist schließlich noch eine Ausführungsform, die dadurch gekennzeichnet ist, daß man im Falle, daß mindestens einer der Reste R" die Formel -OCH3, -OC2H5, -OC3H7 oder — O —C(=0) —R' hat, die Umsetzung in Gegenwart von hydrolysierbaren Organosiliciumverbindungen mit mindestens einer Struktureinheit der FormelFinally, the subject of the main patent is another embodiment which is characterized in that in the event that at least one of the radicals R "has the formula -OCH 3 , -OC 2 H 5 , -OC 3 H 7 or - O —C (= 0) —R 'has the reaction in the presence of hydrolyzable organosilicon compounds with at least one structural unit of the formula

Ra- mSi(OR"')mO4_o RamSi (OR "') mO 4 _ o

2
worin a = 4 oder (nif2) ist und R'" für CH3,
2
where a = 4 or (nif2) and R '"is CH 3 ,

709 650/434709 650/434

C2H6 oder C3H7 steht, und gegebenenfalls weiteren Struktureinheiten der FormelC 2 H 6 or C 3 H 7 , and optionally further structural units of the formula

durchführt und dabei die zur vollständigen Hydrolyse und Siloxankondensation stöchiometrisch erforderliche Menge Wasser während der Reaktion zufügt.carries out and thereby the stoichiometrically required for complete hydrolysis and siloxane condensation Add amount of water during the reaction.

In weiterer Ausbildung dieses Verfahrens wurdeIn further training this procedure was

nun gefunden, daß man mindestens den gleichen Erfolg erzielt, wenn man an Stelle von p-Toluolsulfonsäure Benzolsulfonsäure oder p-Chlorbenzolsulfonsäure verwendet.now found that you can achieve at least the same success if you replace p-toluenesulfonic acid Benzene sulfonic acid or p-chlorobenzenesulfonic acid is used.

CH3-C(^O)CH 3 -C (^ O)

Beispielexample

-O — CH2- Si(CHg)2- O — Si(CH3)2~CHä — O —C(= O) > HO —CH2-Si(CH3)2 —O — Si(CH3)2 — CH2 —OH-O - CH 2 - Si (CHg) 2 - O - Si ä (CH 3) 2 ~ CH - O -C (= O)> HO -CH 2 -Si (CH 3) 2 -O - Si (CH 3 ) 2 -CH 2 -OH

- CH3 + 2 HOCH3
2CH3-C(= O)-OCH3
- CH 3 + 2 UP 3
2CH 3 -C (= O) -OCH 3

Man löst 278 g (1 Mol) l,3-Di-(acetoxymethyl> tetramethyldisiloxan und 6,2 g Benzolsulfonsäure in 640 g (20 Mol) Methanol und destilliert aus dieser Lösung über eine Kolonne Essigsäuremethylester und überschüssiges Methanol unter Erhitzen bis auf 90° C (am Kolonnenkopf 70°C) ab. Den Rückstand mischt man mit einer Lösung von 2,3 g Kaliumhydroxyd in 30 cm3 Methanol, filtriert das ausgefallene Salz ab und verdampft aus dem Filtrat das restliche Lösungsmittel in einem durchgeleiteten Strom von Kohlendioxyd unter Erhitzen bis 900C und bis auf 3 Torr vermindertem Druck. Den Rückstand filtriert man klar und erhält als Filtrat mit praktisch vollständiger Ausbeute das l,3-Di-(hydroxymethyl)-tetramethyldisiloxan, das bei 20° C eine Dichte von 0,985 g/cm3 und eine Viskosität von 45 cP hat; 17,0 Gewichtsprozent Hydroxylgehalt, n2g = 1,4385.278 g (1 mol) of 1,3-di- (acetoxymethyl> tetramethyldisiloxane and 6.2 g of benzenesulfonic acid are dissolved in 640 g (20 mol) of methanol and methyl acetate and excess methanol are distilled from this solution over a column with heating to 90 ° C. (at the top of the column 70 ° C.) The residue is mixed with a solution of 2.3 g of potassium hydroxide in 30 cm 3 of methanol, the precipitated salt is filtered off and the remaining solvent is evaporated from the filtrate in a stream of carbon dioxide passed through with heating to 90 0 C and reduced to 3 torr pressure. the residue is filtered clear and obtained as a filtrate with virtually complete yield the l, 3-di- (hydroxymethyl) tetramethyldisiloxane, which at 20 ° C, a density of 0.985 g / cm 3 and has a viscosity of 45 cP; 17.0 weight percent hydroxyl content, n 2 g = 1.4385.

Das gleiche Ergebnis erzielt man, wenn man statt der Benzolsulfonsäure 7,5 g p-Chlorbenzolsulfonsäure verwendet und im übrigen gleichermaßen, wie vorangehend beschrieben, verfährt.The same result is achieved if 7.5 g of p-chlorobenzenesulfonic acid are used instead of the benzenesulfonic acid is used and otherwise proceeds in the same way as described above.

Zum Vergleich der katalytischen Wirksamkeit der verschiedenen aromatischen Sulfonsäuren wurden drei Versuche analog dem Beispiel durchgeführt, jedoch mit der Änderung, daß die Umesterungsreaktion jeweils nach 3 Stunden abgebrochen wurde, um den Fortgang der Umesterung durch Analyse deutlich erfassen zu können.To compare the catalytic effectiveness of the various aromatic sulfonic acids, three Experiments carried out analogously to the example, but with the change that the transesterification reaction was terminated after 3 hours in order to clearly record the progress of the transesterification by analysis to be able to.

Hydroxylgehalt
Gewichtsprozent
Hydroxyl content
Weight percent
VerseifungszahlSaponification number Brechungsindex
«*>
Refractive index
«*>
Vor der Reaktion .. . .Before the reaction ... . 0
14
15
17
0
14th
15th
17th
403
38
30
11
403
38
30th
11
1,4230
1,4335
1,4355
1,4380
1.4230
1.4335
1.4355
1.4380
Nach 3 Stunden mit
6 g Toluolsulfonsäure
6,2 g Benzolsulfonsäure
7,2 g p-Chlorbenzolsulfonsäure
After 3 hours with
6 g of toluenesulfonic acid
6.2 g benzenesulfonic acid
7.2 g of p-chlorobenzenesulfonic acid

Die Ergebnisse lassen erkennen, daß bei gleicher Größenordnung der Reaktionsbeschleunigung die in den Beispielen genannten Sulfonsäuren, insbesondere das Chlorderivat, sogar noch merklich wirksamer sind als die p-Toluolsulfonsäure.The results show that with the same order of magnitude of the reaction acceleration, the in the sulfonic acids mentioned in the examples, in particular the chlorine derivative, are even noticeably more effective than the p-toluenesulfonic acid.

Claims (1)

Patentanspruch:Claim: Verfahren zur Herstellung von Hydroxymethylsiloxanen mit mindestens einer Struktureinheit der FormelProcess for the preparation of hydroxymethylsiloxanes having at least one structural unit of formula HO - CH2 — Si (CH3)m — O3_ „HO - CH 2 - Si (CH 3 ) m - O 3 _ " 4545 5050 worin m = 1 oder 2, und gegebenenfalls weiteren Struktureinheiten der Formelwhere m = 1 or 2, and optionally further structural units of the formula worin η = 1, 2, oder 3 und jeder der Substituenten R ein Methyl- oder Phenylrest ist, nach Patent 1236 505, dadurch gekennzeichnet, daß man an Stelle von p-Toluolsulfonsäure Benzolsulfonsäure oder p-Chlorbenzolsulfonsäure verwendet. where η = 1, 2 or 3 and each of the substituents R is a methyl or phenyl radical, according to Patent 1236 505, characterized in that benzenesulfonic acid or p-chlorobenzenesulfonic acid is used instead of p-toluenesulfonic acid.
DENDAT1251320D 1965-07-22 Ver drive for the production of hydroxymethylsiloxanes Pending DE1251320B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DEF46679A DE1236505B (en) 1965-07-22 1965-07-22 Process for the production of hydroxymethyl-siloxanes
DEF0047467 1965-10-20

Publications (1)

Publication Number Publication Date
DE1251320B true DE1251320B (en) 1967-10-05

Family

ID=25976883

Family Applications (2)

Application Number Title Priority Date Filing Date
DENDAT1251320D Pending DE1251320B (en) 1965-07-22 Ver drive for the production of hydroxymethylsiloxanes
DEF46679A Pending DE1236505B (en) 1965-07-22 1965-07-22 Process for the production of hydroxymethyl-siloxanes

Family Applications After (1)

Application Number Title Priority Date Filing Date
DEF46679A Pending DE1236505B (en) 1965-07-22 1965-07-22 Process for the production of hydroxymethyl-siloxanes

Country Status (3)

Country Link
BE (1) BE684452A (en)
DE (2) DE1236505B (en)
GB (1) GB1121265A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009046254A1 (en) 2009-10-30 2011-05-19 Wacker Chemie Ag Process for the preparation of (hydroxymethyl) polysiloxanes

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4163830A (en) 1975-12-24 1979-08-07 Bayer Aktiengesellschaft Process for the production of new polysiloxane-polyoxyalkylene copolymers with reduced burning properties
DE3824287A1 (en) * 1988-07-16 1990-02-15 Bayer Ag N, N-DISUBSTITUTED OLIGO- AND POLYURETHANES, METHOD FOR THE PRODUCTION THEREOF AND THEIR USE IN THE PRODUCTION OF PLASTICS
DE102011080900A1 (en) 2011-08-12 2013-02-14 Wacker Chemie Ag Process for the preparation of (hydroxymethyl) polysiloxanes
DE102011080888A1 (en) 2011-08-12 2013-02-14 Technische Universität München Process for the preparation of poly (hydroxymethyl) -functional siloxanes and silica gels

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009046254A1 (en) 2009-10-30 2011-05-19 Wacker Chemie Ag Process for the preparation of (hydroxymethyl) polysiloxanes
US8822621B2 (en) 2009-10-30 2014-09-02 Wacker Chemie Ag Method for producing (hydroxymethyl)polysiloxanes

Also Published As

Publication number Publication date
GB1121265A (en) 1968-07-24
DE1236505B (en) 1967-03-16
BE684452A (en) 1967-01-03

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