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

Claim 10:
11. The process according to claim 7, wherein the mixture of compounds bearing a phosphorus atom a.2) comprises:
I. [bis(hydroxymethyl)phosphanyl]methanol (THP) in a concentration selected from 35-85 mol %,
II. a tetrakis(hydroxymethyl) phosphonium salt (THPX) in a concentration selected from 0-30 mol %,
III. [bis(hydroxymethyl)phosphoryl]methanol (THPO) in a concentration selected from 1-15 mol %,
IV. {[bis(hydroxymethyl)phosphanyl]methoxy}methanol (mTHP) in a concentration selected from 0.4-40 mol %,
V. {bis[(hydroxymethoxy)methyl]phosphanyl}methanol (dTHP) in a concentration selected from 0-30 mol %,
VI. ({bis[(hydroxymethoxy)methyl]phosphanyl}methoxy)methanol (tTHP) in a concentration selected from 0-15 mol %,
VII. bis(hydroxymethyl)phosphorylmethoxymethanol (mTHPO) in a concentration selected from 0-20 mol %,
VIII. {bis[(hydroxymethoxy)methyl]phosphoryl}methanol (dTHPO) in a concentration selected from 0-10 mol %,
IX. ({bis[(hydroxymethoxy)methyl]phosphoryl}methoxy)methanol (tTHPO) in a concentration selected from 0-4 mol %;
X. optionally at least one other compound bearing a phosphorus atom;
being the sum total of phosphorus containing components of the mixture 100 mol %;

wherein the compound a.1) bearing at least one basic-nitrogen atom is selected from:
melamine, trimethylol melamine;
the compound of formula (I) wherein R1 is selected from H, methyl, —CN, CH3 CO—, and NH2—CO—; and
the compound of formula (II) wherein R2 is selected from O═C<; and S═C<; and R3 is H;
and mixtures thereof;

wherein the base polyol is an ethylene oxide capped polyether polyol having a content of terminal primary hydroxyl groups selected from 35-99.9%, a content of polyethylene oxide terminal blocks of 5-20 wt % and a OH functionality selected from 2 to 8; and
wherein the monofunctional polyetheramine has a propylene oxide content selected from 80-90 wt %, and a propylene oxide to ethylene oxide mol ratio selected from 4.5:1 to 12:1.