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

Claim 2:
3. The stable modified polymer polyol according to claim 1, 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 %, and
IX. ({bis[(hydroxymethoxy)methyl]phosphoryl}methoxy)methanol (tTHPO) in a concentration selected from 0-4 mol %;
being the sum total of phosphorus containing components of the mixture 100 mol %.