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US 2014/0275310 A1Published application
Novel polymer polyols based on natural oils polyols
AssigneeBayer MaterialScience AG
InventorsRick Adkins, Jiong England, Don Wardius
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Abstract
This invention relates to stable, low-viscosity polymer polyols and to a process for preparing these stable, low-viscosity polymer polyols. These polymer polyols comprise (a) a base polyol component that comprises a natural oil base polyol having a mean hydroxyl functionality of 1.7 to 5.0, a number average molecular weight of about 350 to about 725, and an OH number of 190 to 500.
Claims18
A stable, low-viscosity polymer polyol comprising the free-radical polymerization product of:
- (a) a clear liquid base polyol component comprising a natural oil base polyol having a mean hydroxyl functionality of 1.7 to 5.0, a number average molecular weight of about 350 to about 725 and an OH number of 190 to 500, and which comprises the transesterification/alkoxylation product of
- (i) at least one initiator comprising at least one Zerewitinoff-active hydrogen atom;
- (ii) a natural oil component or a mixture of natural oil components;
- and
- (iii) at least one alkylene oxide;
- in the presence of:
- (iv) at least one alkaline catalyst;
- wherein said alkylene oxide is completely reacted;
- (b) at least one ethylenically unsaturated monomer;
- and, optionally,
- (c) a preformed stabilizer;
- in the presence of:
- (d) a free-radical polymerization initiator;
- and, optionally,
- (e) a chain transfer agent.
12 more elements
A process for preparing a stable, low-viscosity polymer polyol comprising:
- (1) free-radically polymerizing:
- (a) a clear liquid base polyol component comprising a natural oil base polyol having a functionality of 1.7 to 5.0, a molecular weight of about 350 to about 725 and an OH number of 190 to 500, and which comprises the transesterification/alkoxylation product of
- (i) at least one initiator comprising at least one Zerewitinoff active hydrogen atom;
- (ii) a natural oil component or a mixture of natural oil components;
- and
- (iii) at least one alkylene oxide;
- in the presence of
- (iv) at least one basic catalyst;
- wherein said alkylene oxide is completely reacted;
- (b) at least one ethylenically unsaturated monomer;
- and, optionally,
- (c) a preformed stabilizer;
- in the presence of:
- (d) a free-radical polymerization initiator;
- and, optionally,
- (e) a chain transfer agent.
13 more elements
Dependencies are inferred from the claim text.