Process for preparing organosilicon compounds containing organyloxy groups

Patent metadata

Field	Value
Publication number	US-2018194902-A1
Application number	US-201615742402-A
Country	US
Kind code	A1
Filing date	Aug 24, 2016
Priority date	Aug 31, 2015
Publication date	Jul 12, 2018
Grant date	—

Abstract

Synthesis of organyloxyfunctional organosilicon compounds is facilitated by a two-step process using a basic lithium, guanidine or amidine catalyst in the first step, and a phosphorus compound having a P═O linkage in a second step.

First claim

1 .- 9 . (canceled)

10 . A process for the production of compositions comprising organosilicon compounds having organyloxy groups, comprising:
in a first step mixing at least one organosilicon compound (E) comprising at least one silanol group with at least one compound (B) comprising at least two organyloxy groups in the presence of at least one base (C1) selected from the group consisting of guanidines, amidines, lithium-containing bases, and the mixtures thereof, and reacting the mixture to from a resultant reaction mixture, and in a second step admixing one or more phosphorus compounds (C3) having a P═O group with the resultant reaction mixture, wherein at least one phosphorus compound (C3) having a P═O group is selected from the group consisting of phosphorus compounds of the formula
O═PR 16 m (OR 17 ) n (OH) 3−(m+n)   (VII),

where m is 0 or 1, n is 0, 1, 2 or 3, m+n is 1, 2 or 3, R 16 is an optionally substituted hydrocarbon moiety, R 17 each is identical or different, and is an optionally substituted hydrocarbon moiety which is optionally interrupted by heteroatoms, is a triorganosilyl moiety bonded by way of Si, is an organoalkoxysilyl moiety bonded by way of Si, or is a phosphate moiety bonded by way of P,
with the proviso that if R 17 is an optionally substituted hydrocarbon moiety, then m is equal to 0 and n is equal to 1 or 2.

11 . The process of claim 10 , wherein at least one compound (B) is a compound comprising units of the formula:
R 1 c (OR 2 ) d (OH) e SiO (4−c−d−e)/2   (II),

where
R 1 are identical or different SiC-bonded hydrocarbon moieties,
R 2 each is identical or different and is a hydrocarbon moiety which is optionally interrupted by oxygen atoms,
c is 0, 1, 2 or 3,
d is 0, 1, 2, 3 or 4 and
e is 0 or 1,

with the proviso that the sum c+d+e≤4 and at least two —OR 2 moieties are present per molecule.

12 . The process of claim 10 , wherein (C1) comprises one or more guanidines.

13 . The process of claim 11 , wherein (C1) comprises one or more guanidines.

14 . The process of claim 10 , wherein the second step is carried out only when at least 50% or more of Si-bonded OH groups in component (E) have reacted with component (B) in the first step.

15 . The process of claim 11 , wherein the second step is carried out only when at least 50% or more of Si-bonded OH groups in component (E) have reacted with component (B) in the first step.

16 . The process of claim 10 , wherein mixing of the individual components both in the first step and in the second step takes place with exclusion of water from the surrounding atmosphere.

17 . A composition comprising at least one organosilicon compound (A) having organyloxy groups, and also comprising at least one salt (C) formed from one or more bases (C1) selected from guanidines, amidines, lithium-containing bases, and mixtures thereof, and from at least one phosphorus compound (C3) having a P═O group, selected from the group consisting of phosphorus compounds of the formula:
O═PR 16 m (OR 17 ) n (OH) 3−(m+n)   (VII),

where
m is equal to 0 or 1,
n is equal to 0, 1, 2 or 3,
m+n is equal to 1, 2 or 3,
R 16 is an optionally substituted hydrocarbon moiety,
R 17 is identical or different and is an optionally substituted hydrocarbon moiety which is optionally interrupted by heteroatoms, is a triorganosilyl moiety bonded by way of Si, is an organoalkoxysilyl moiety bonded by way of Si, or is a phosphate moiety bonded by way of P,

with the proviso that if R 17 is an optionally substituted hydrocarbon moiety, then m is equal to 0 and n is equal to 1 or 2.

18 . The composition of claim 17 , wherein the composition is a composition that is crosslinkable by a condensation reaction, comprising:
(A) organosilicon compounds having organyloxy groups, (B) organosilicon compounds having at least two organyloxy groups, (C) salt,
optionally
(C1) base,
(D) organic solvent,
(F) catalyst,
(G) calcium carbonate,

optionally
(G1) other fillers,

optionally
(H) plasticizers and

optionally
(I) other constituents.

19 . The composition of claim 17 , which is a composition crosslinkable by a condensation reaction, comprising
(A) organosilicon compounds having organyloxy groups, (B) organosilicon compounds having at least two organyloxy groups, (C) salt, (C3) phosphorus compound,
optionally
(D) organic solvent,
(F) catalyst,
(G) calcium carbonate, and

optionally
(G1) other fillers,

optionally
(H) plasticizers and

optionally
(I) other constituents.

20 . A molding produced by crosslinking composition of claim 17 .

21 . A molding produced by crosslinking composition of claim 18 .

Assignees

• Wacker Chemie Ag

Inventors

• Prasse Marko
• Ostendorf Detlev

Classifications

• C08K5/5425

  containing at least one C=C bond · CPC title

• C08K5/31

  Guanidine; Derivatives thereof · CPC title

• C08G77/395 Primary

  containing phosphorus · CPC title

• C08G77/08 Primary

  characterised by the catalysts used · CPC title

• C08G77/16

  to hydroxy groups · CPC title