Isocyanate-functional cyclic carbonates

Patent metadata

Field	Value
Publication number	US-9567313-B2
Application number	US-201314424487-A
Country	US
Kind code	B2
Filing date	Aug 22, 2013
Priority date	Aug 28, 2012
Publication date	Feb 14, 2017
Grant date	Feb 14, 2017

Abstract

The invention relates to a process for preparing compounds containing isocyanate groups and cyclic carbonate structures, by reacting at least A) a monomeric diisocyanate with aliphatically, cycloaliphatically, araliphatically and/or aromatically bonded isocyanate groups with B) a hydroxy-functional cyclic carbonate, characterized in that component A) is reacted with component B) in an equivalents ratio of isocyanate groups to hydroxyl groups of at least 8:1. The invention further relates to the products obtainable by the process according to the invention, and to a composition comprising compounds containing isocyanate groups and cyclic carbonate structures. The invention additionally relates to the use of the products obtainable by the process according to the invention and of the composition as a starting component in the preparation of polyurethanes containing cyclic carbonate structures, crosslinkable binders, and also raw materials for coatings, sealants or adhesives.

First claim

The invention claimed is:

1. A composition comprising
a) a compound of the general formula (III) containing an isocyanate group and a cyclic carbonate structure,

b) a compound of the general formula (IV) containing cyclic carbonate structures,

and

c) a monomeric diisocyanate having aliphatically, cycloaliphatically, araliphatically and/or aromatically bonded isocyanate groups,
where, in the formulae (III) and (IV),
R is hydrogen or a saturated or unsaturated, linear or branched, aliphatic radical having 1 to 7 carbon atoms,
X is a linear or branched organic radical which has 1 to 36 carbon atoms and which may optionally contain ether, ester and/or carbonate groups,
n is 0 or 1 and
Y is a linear or branched, aliphatic or cycloaliphatic radical having 4 to 18 carbon atoms or an optionally substituted aromatic or araliphatic radical having 6 to 18 carbon atoms,

wherein, based in each case on the total amount of components a) and b), component a) makes up a proportion of ≧88% by weight, and component b) a proportion of ≦12% by weight, and component c) is present to an extent of ≦1% by weight, in the overall composition.

2. The composition as claimed in claim 1 , wherein component b) makes up a proportion of 0.5% to 12% by weight, based on the total amount of components a) and b).

3. A method comprising utilizing the composition as claimed in claim 1 as a starting component in the production of polyurethanes containing cyclic carbonate structures or as a starting component in the production of crosslinkable binders or as a starting component in the production of crosslinkable raw materials for varnishes, sealants or adhesives.

4. A polyurethane containing cyclic carbonate structures, prepared using the composition containing isocyanate groups and cyclic carbonate structures as claimed in claim 1 .

Assignees

• Bayer Materialscience Ag
• Covestro Deutschland Ag

Inventors

• Laas Hans-Josef

Classifications

• C07D319/06 Primary

  not condensed with other rings · CPC title

• C07D317/36

  Alkylene carbonates; Substituted alkylene carbonates · CPC title

• C08G18/282

  Alkanols, cycloalkanols or arylalkanols including terpenealcohols · CPC title

• C08G18/38 Primary

  having heteroatoms other than oxygen (C08G18/32 takes precedence) · CPC title

• C08G18/3218

  containing cyclic groups having at least one oxygen atom in the ring · CPC title