Process for preparing polyol dispersions

Patent metadata

Field	Value
Publication number	US-9234066-B2
Application number	US-99249209-A
Country	US
Kind code	B2
Filing date	May 11, 2009
Priority date	May 13, 2008
Publication date	Jan 12, 2016
Grant date	Jan 12, 2016

Abstract

The present invention relates to a dispersion comprising
(i) at least one liquid polymer and (ii) at least one polymer particle mixture comprising at least one meltable solid and at least one copolymer (C),

wherein said at least one copolymer (C) is a random copolymer synthesized from at least one α,β-ethylenically unsaturated monomer and at least one polymerizable polymer of the class of liquid polymers according to (i), to processes for preparing this dispersion, to the use of this dispersion to prepare polyurethanes, and to a process for preparing polyurethanes, in which at least one such dispersion is reacted with at least one polyisocyanate.

First claim

The invention claimed is:

1. A dispersion, comprising:
(i) at least one liquid polymer, which is a liquid at 25° C. and 1013 mbar and selected from the group consisting of a polyol, a polymeric isocyanate, a polyacrylate, a film-forming polymer, a polyurethane prepolymer, and polyisobutene; and
(ii) at least one polymer particle mixture comprising
(a) at least one thermoplastic polymer (P) selected from the group consisting of a polystyrene, a poly(styrene-co-acrylonitrile), a polyacrylate, a polymethacrylate, a polyolefin, a polyester, a polyamide, a thermoplastic polyurethane, and a copolymer comprising at least two monomers selected from the group consisting of styrene, an acrylate, a methacrylate, an olefin, a polyester monomer, and a polyamide monomer, and
(b) at least one random copolymer (C) synthesized from at least one α,β-ethylenically unsaturated monomer and at least one polymerizable liquid polymer selected from the group consisting of:
a polyol obtained from at least one unsaturated starter alcohol selected from the group consisting of an allylalcohol, isoprenol, and hydroxybutylvinylether, or at least one hydroxyalkyl(meth)acrylate;
a polyol obtained by reaction of a polyol with an unsaturated acid, which is (meth)acrylic acid;
a polyol obtained by reaction of a polyol with an unsaturated ester, which is a (meth)acrylic acid ester;
a polyol obtained by reaction of a polyol with an unsaturated isocyanate;
a polymeric isocyanate obtained by reaction of an NCO-terminated polymeric isocyanate with a hydroxylalkylacrylate;
a polymeric isocyanate obtained by reaction of an NCO-terminated polymeric isocyanate with a hydroxylalkylmethacrylate;
a polyurethane-prepolymer obtained by reaction of an NCO-terminated polyurethane prepolymer with a hydroxylalkylacrylate;
a polyurethane-prepolymer obtained by reaction of an NCO-terminated polyurethane prepolymer with a hydroxylalkylmethacrylate;
a poly(meth)acrylate obtained by reaction of a poly(meth)acrylate with an unsaturated alcohol; and
a polyisobutene obtained by reaction of polyisobutene-succinic acid-anhydride with an unsaturated alcohol.

2. The dispersion according to claim 1 , wherein the polyol is present and is at least one selected from the group consisting of a polyetherol, and a polyesterol.

3. The dispersion according to claim 1 , further comprising at least one emulsifier.

4. A process for preparing a dispersion according claim 1 , the process comprising:
(A) heating a first mixture (I) comprising
at least one thermoplastic polymer (P) selected from the group consisting of a polystyrene, a poly(styrene-co-acrylonitrile), a polyacrylate, a polymethacrylate, a polyolefin, a polyester, a polyamide, a thermoplastic polyurethane, and a copolymer comprising at least two monomers selected from the group consisting of styrene, a styrene, an acrylate, a methacrylate, an olefin, a polyester monomer, and a polyamide monomer,
at least one liquid polymer, which is a liquid at 25° C. and 1013 mbar and selected from the group consisting of a polyol, a polymeric isocyanate, a polyacrylate, a film-forming polymer, a polyurethane prepolymer, and polyisobutene, and
at least one random copolymer (C) synthesized from at least one α,β-ethylenically unsaturated monomer and at least one polymerizable liquid polymer selected from the group consisting of:
a polyol obtained from at least one unsaturated starter alcohol selected from the group consisting of an allylalcohol, isoprenol, and hydroxybutylvinylether, or at least one hydroxyalkyl(meth)acrylate;
a polyol obtained by reaction of a polyol with an unsaturated acid, which is (meth)acrylic acid;
a polyol obtained by reaction of a polyol with an unsaturated ester, which is a (meth)acrylic acid ester;
a polyol obtained by reaction of a polyol with an unsaturated isocyanate;
a polymeric isocyanate obtained by reaction of an NCO-terminated polymeric isocyanate with a hydroxylalkylacrylate;
a polymeric isocyanate obtained by reaction of an NCO-terminated polymeric isocyanate with a hydroxylalkylmethacrylate;
a polyurethane-prepolymer obtained by reaction of an NCO-terminated polyurethane prepolymer with a hydroxylalkylacrylate;
a polyurethane-prepolymer obtained by reaction of an NCO-terminated polyurethane prepolymer with a hydroxylalkylmethacrylate;
a poly(meth)acrylate obtained by reaction of a poly(meth)acrylate with an unsaturated alcohol; and
a polyisobutene obtained by reaction polyisobutene-succinic acid-anhydride with an unsaturated alcohol,

to give a second mixture (II); and
(C) cooling the second mixture (II).

5. The process according to claim 4 , further comprising after (A), and prior to (C):
(B) dispersing the second mixture (II).

6. A process for preparing a dispersion, the process comprising:
(A′) heating a first mixture (I′) comprising
at least one thermoplastic polymer (P) selected from the group consisting of a polystyrene, a poly(styrene-co-acrylonitrile), a polyacrylate, a polymethacrylate, a polyolefin, a polyester, a polyamide, a thermoplastic polyurethane, and a copolymer comprising at least two monomers selected from the group consisting of styrene, a styrene, an acrylate, a methacrylate, an olefin, a polyester monomer, and a polyamide monomer,
at least one liquid polymer, which is a liquid at 25° C. and 1013 mbar and selected from the group consisting of a polyol, a polymeric isocyanate, a polyacrylate, a film-forming polymer, a polyurethane prepolymer, and polyisobutene, and
at least one random copolymer (C′) synthesized from at least one α,β-ethylenically unsaturated monomer and at least one polymerizable liquid polymer selected from the group consisting of:
a polyol obtained from at least one unsaturated starter alcohol selected from the group consisting of an allylalcohol, isoprenol, and hydroxybutylvinylether, or at least one hydroxyalkyl(meth)acrylate;
a polyol obtained by reaction of a polyol with an unsaturated acid, which is (meth)acrylic acid;
a polyol obtained by reaction of a polyol with an unsaturated ester, which is a (meth)acrylic acid ester;
a polyol obtained by reaction of a polyol with an unsaturated isocyanate;
a polymeric isocyanate obtained by reaction of an NCO-terminated polymeric isocyanate with a hydroxylalkylacrylate;
a polymeric isocyanate obtained by reaction of an NCO-terminated polymeric isocyanate with a hydroxylalkylmethacrylate;
a polyurethane-prepolymer obtained by reaction of an NCO-terminated polyurethane prepolymer with a hydroxylalkylacrylate;
a polyurethane-prepolymer obtained by reaction of an NCO-terminated polyurethane prepolymer with a hydroxylalkylmethacrylate;
a poly(meth)acrylate obtained by reaction of a poly(meth)acrylate with an unsaturated alcohol; and
a polyisobutene obtained by reaction of polyisobutene-succinic acid-anhydride with an unsaturated alcohol,

to give a second mixture (II′);
(B) dispersing the second mixture (II′); and
(C) cooling the second mixture (II) with a cooling rate of at least 10 K/min.

7. The process according to claim 4 , wherein no shearing takes place in (C).

8. A dispersion obtained by the process according to claim 4 .

9. An automobile, architectural or roof coating, a sealant, a cement, paper, a textile, leather, an adhesive, a fuel additive composition, comprising the dispersion according to claim 1 .

10. A polyurethane, comprising the dispersion according to claim 1 .

11. A process for preparing a polyurethane, the process comprising reacting the dispersion according to claim 1 with at least one polyisocyanate.

12. The dispersion according to claim 2 , further comprising at least one emulsifier.

Assignees

• Freidank Daniel
• Emge Andreas
• Judat Sonja
• Engel Robert
• Martin Ingrid
• Danner Thomas
• Loeffler Achim
• Hess Stephan
• Basf Se

Inventors

• Freidank Daniel
• Emge Andreas
• Judat Sonja
• Engel Robert
• Martin Ingrid
• Danner Thomas
• Loeffler Achim
• Hess Stephan

Classifications

• C08J3/02

  Making solutions, dispersions, lattices or gels by other methods than by solution, emulsion or suspension polymerisation techniques · CPC title

• C08G18/0876

  the dispersing or dispersed phase being a polyol · CPC title

• C08G18/0871 Primary

  the dispersing or dispersed phase being organic · CPC title

• C08L75/04 Primary

  Polyurethanes · CPC title

• C09D175/04

  Polyurethanes · CPC title