Patent ID: 11912812
Assignee: REPSOL, S.A.
Field: Macromolecular chemistry, polymers (Chemistry)
Classification: CPC C | IPC C

Claim 0:
1. A stable modified polymer polyol dispersion of polymeric particles in a liquid polyol mixture, the stable modified polymer polyol dispersion is obtainable by a process comprising the preparation of polymeric particles, in the presence of the liquid polyol mixture, by
a. reacting in the liquid polyol mixture and under polymerisation conditions
at least one compound bearing at least one basic-nitrogen atom a.1) characterized by the presence in the molecule of at least one hydrogen atom attached to a nitrogen atom;
with
a mixture of compounds bearing a phosphorus atom a.2) comprising [bis(hydroxymethyl)phosphanyl]methanol (THP), a tetrakis(hydroxymethyl) phosphonium salt (THPX), [bis(hydroxymethyl)phosphoryl]methanol (THPO), ({[bis(hydroxymethyl)phosphanyl]methoxy}methanol (mTHP), {bis[(hydroxymethoxy)methyl]phosphanyl}methanol (dTHP), ({bis[(hydroxymethoxy)methyl]phosphanyl}methoxy)methanol (tTHP)), bis(hydroxymethyl)phosphorylmethoxymethanol (mTHPO), {bis[(hydroxymethoxy)methyl]phosphoryl}methanol (dTHPO) and ({bis[(hydroxymethoxy)methyl]phosphoryl}methoxy)methanol (tTHPO);
or
the mixture of condensation products a.3) resulting from the reaction of the mixture of compounds bearing a phosphorus atom a.2) as described above and at least one compound bearing at least one basic nitrogen atom a.1);

wherein the compound bearing at least one basic-nitrogen atom a.1) is selected from
melamine, trimethylol melamine, a compound of formula (I), a compound of formula (II); and
mixtures thereof;

wherein the compound of formula (I) is as follows

R1—NH2  (I)

wherein R1 is selected from —H, —(C1-C3)Alkyl, (C1-C3)Alkyl-CO—, NH2—CO—, —(CH2)n—NH2, —CN, —NH2, —SO2NH2, cyclohexyl, phenyl, —SO2OH and —NHCONHNH2; wherein n is an integer selected from 1-18;
and the compound of formula (II) is as follows:, wherein R2 is selected from NH═C<, O═C<, and S═C<; and R3 is selected from H, —CN, —NH2, —CONH2, —CONHCONH2, and —CONHCONHCONH2;
wherein the liquid polyol mixture comprises at least one base polyol and at least one monofunctional polyetheramine, the monofunctional polyetheramine having a propylene oxide content selected from 30-99 wt %.