EP0818496A2
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Method for making aqueous emulsions of functionalized organic polymers
Assignee: Dow Silicones Corp
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Filing: 1997-07-01
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Granted: —
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Expires: 2017-07-01
Abstract
Abstract There is claimed herein an aqueous emulsion comprising a functionalized organic polymer formed by mixing (a) a preformed aqueous emulsion comprising water, particles containing a plurality of silanol modified organic polymer molecules dispersed in the water, and a surfactant; (b) a functionalizing silane and (c) a tin catalyst. Depending on reaction conditions, these emulsions are predominantly non-precrosslinked and photocurable compositions that are crosslinked after application in either the wet or dry state.
Inventors
- 👤 Donald Taylor Liles
- 👤 David Logan Murray
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-08 12:43
CPC Classifications
C; C08; C08J; C08J3/00; C08J3/02; C08J3/03; C08J3/05; C08K; C08K5/00; C08K5/54; C08F; C08F8/00; C08F8/42; C08G; C08G77/00; C08G77/04; C08G77/32; C08J3/28; C08K5/04; C08K5/09; C08K5/098; C08K5/56; C08K5/57; C08J2383/00; C08J2383/04; C08L; C08L2201/00; C08L2201/54; C08L83/00; C08L83/04
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
103 words
A method for preparing an aqueous emulsion comprises
mixing: (A) a preformed aqueous emulsion comprising water,
particles of a plurality of silanol modified organic polymer
molecules dispersed in water and a surfactant; (B) a functionalizing silane having the formula R n QSiX 3-n or partial hydrolysis and condensation products thereof where Q is an organic functional group that does not prevent a
condensation reaction between X and silanol modified organic
polymer, R is Q or a saturated monovalent hydrocarbon group having
from 1 to 6 carbon atoms, X is a hydrolyzable group, n is 0, 1 or 2; and (C) an organotin catalyst.
Claim 2
Dependent Claim
95 words
The method according to claim 1, wherein Q is a group
selected from the group consisting of an acryloxyalkylene,
methacryloxyalkylene, vinyl, allyl , chloroalkylene, hexenyl
acrylamidoalkylene, trifluoromethylalkylene, alkylene
vinylether, glycidoxyalkylene, cyanoalkylene,
mercaptoalkylene, aminoalkylene, a group represented by the
formula HCl.ZN(H)-CH 2 CH 2 -N(Z)-CH 2 CH 2 CH 2 - or a group of the formula HCl.ZN(H)-CH 2 CH 2 -N(H)-CH 2 CH 2 CH 2 -, wherein Z is
-CH 2 (C 6 H 4 )-CH=CH 2 and the alkylene group is a divalent
saturated hydrocarbon group having from 2 to 6 carbon atoms.
Claim 3
Independent Claim
45 words
The method according to any of the preceding claims,
wherein R is Q or an alkyl radical having 1 to 4 carbon atoms,
X is an alkoxy group having 1 to 4 carbon atoms, the alkylene
group is propylene and n is 0 or 1.
Claim 4
Independent Claim
24 words
The method according to any of the preceding claims,
wherein the organotin catalyst is selected from tin (II)
carboxylate or dialkyl tin (IV) carboxylate.
Claim 5
Independent Claim
17 words
The method according to any of the preceding claims
further comprising the step of adding a filler.
Claim 6
Independent Claim
15 words
The method according to any of the preceding claims,
wherein the functionalizing silane is 3-acryloxypropylmethyldiethoxysilane.
Claim 7
Independent Claim
33 words
The method according to any of claims 1-5, wherein Q is
selected from the groups consisting of acryloxypropylene,
methacryloxypropylene, mercaptopropylene or propylene vinylether
groups and further comprising the step of adding a
photoinitiator.
Claim 8
Dependent Claim
18 words
A composition comprising a functionalized organic
emulsion polymer obtainable by the method according to any of
claims 1-6.
Claim 9
Dependent Claim
18 words
A photocurable coating composition comprising a
functionalized organic emulsion polymer obtainable by the
method according to claim 7.
Claim 10
Dependent Claim
22 words
A method for curing the photocurable coating composition
of claim 9 comprising the step of treating the aqueous emulsion
with ultraviolet light.
Claim 11
Dependent Claim
31 words
A method for curing the photocurable coating composition
of claim 9 comprising the steps of evaporating water to form a
dried emulsion and then treating the dried emulsion with
ultraviolet light.
References Cited (Backward Citations)
No citation records indexed.
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