US 5,208,072 AGranted

Mass treatment of cellulosic materials

AssigneeFMC Corporation

InventorsConrad W. Kamienski, Robert S. Wedinger

Life of this patent

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Abstract

This invention provides a process for deacidifying paper by contacting the paper with hydrocarbon or halocarbon solutions of certain magnesium and/or zinc alkoxyalkoxides which may have been treated with carbon dioxide to yield low viscosity solutions.

Claims19

Dependent claims

A process for deacidifying cellulosic materials comprising contacting the cellulosic material with a hydrocarbon or halocarbon solution or mixtures thereof containing an effective deacidifying amount of a composition selected from the group consisting of:

(A) a substituted metal alkoxide having the formula
X.sub.y M.sup.a (OR).sub.a--y.(R.sup.1 OH).sub.x
wherein:
(I) --OR is a group selected from 2-alkoxyalkoxy- and .omega.-alkoxypolyalkoxy- groups of the formula ##STR13## wherein R.sup.2 is selected from H and --CH.sub.3 and R.sup.3 is selected from alkyl groups of 1 to 18 carbon atoms, cycloalkyl groups of 3 to 18 carbon atoms and aryl, arylalkyl and alkylaryl groups of 6 to 18 carbon atoms and n is a value of 1 to 20;
(II) X-- is a group selected from
(a) 2-dialkylaminoalkoxy- and .omega.-dialkylaminopolyalkoxy groups of the formula ##STR14## wherein R.sup.2 is selected from hydrogen and methyl, R.sup.3 is selected from alkyl groups of 1 to 18 carbon atoms, cycloalkyl groups of 3 to 18 carbon atoms and aryl, arylalkyl and alkylaryl groups of 6 to 18 carbon atoms and n is a value of 1 to 20;
(b) a halogen selected from chlorine and bromine;
(c) an organic group --R.sup.4 wherein R.sup.4 is selected from the group consisting of alkyl groups containing 1 to 18 carbon atoms, cycloalkyl groups containing 3 to 18 carbon atoms and aryl, arylalkyl and alkylaryl groups containing 6 to 18 carbon atoms;
(d) an acyloxy group of the formula [--O(O)CR.sup.4 ] wherein R.sup.4 has the hereintobefore ascribed meaning;
(e) .omega.-alkoxypolyalkoxy- groups of the formula ##STR15## wherein R.sup.2, R.sup.3 and n have the herintobefore ascribed meanings;
(f) an alkoxy group --OR.sup.4 wherein R.sup.4 has the hereintobefore ascribed meanings;
(III) M is a metal selected from groups IIa and IIb of the Periodic Table and aluminum and mixtures thereof;
(IV) R.sup.1 OH is a compound in which R.sup.1 O is a group selected from
(e) alkoxy groups of the formula R.sup.4 O wherein R.sup.4 has the hereintobefore ascribed meanings;
(f) 2-alkoxyalkoxy- and .omega.-alkoxypolyalkoxy- groups of the formula ##STR16## wherein R.sup.2, R.sup.3 and n have the hereintobefore ascribed meanings;
(g) 2-dialkylaminoalkoxy- and .omega.-dialkylaminopolyalkoxy groups of the formula ##STR17## (V) a is the valence of the metal M;
(VI) y has a value between zero and one;
and
(VII) x has a value of zero to two;
(B) a carbonated substituted metal alkoxide having the formula
X.sub.y M.sup.a (OR).sub.a--y.(R.sup.1 OH).sub.x
in which either X.sub.y or --OR is carbonated wherein R.sup.1 OH, M, a, y and x have the hereintobefore ascribed meanings;
and
(I) --OR is a group selected from 2-alkoxyalkoxy-and .omega.-alkoxypolyalkoxy- groups of the formula ##STR18## wherein R.sup.2 is selected from H and --CH.sub.3 and selected from alkyl groups of 1 to 18 carbon atoms, cycloalkyl groups of 3 to 18 carbon atoms and aryl, arylalkyl and alkylaryl groups of 6 to 18 carbon atoms and n is a value of 1 to 20;
and
(II) X-- is a group selected from
(a) 2-dialkylaminoalkoxy- and .omega.-dialkylaminopolyalkoxy groups of the formula ##STR19## #wherein R.sup.2 is selected from hydrogen and methyl, R.sup.3 is selected from alkyl groups of 1 to 18 carbon atoms, cycloalkyl groups of 3 to 18 carbon atoms and aryl, arylalkyl and alkylaryl groups of 6 to 18 carbon atoms and n is a value of 1 to 20;
(b) an .omega.-alkoxypolyalkoxy- group of the formula ##STR20## wherein R.sup.2, R.sup.3 and n have the hereintobefore ascribed meanings;
and,
(c) an alkoxy group --OR.sup.4 wherein R.sup.4 has the hereintobefore ascribed meaning
(C) and mixtures of (A) and (B).

28 more elements

Dependencies are inferred from the claim text.

Facts

Application: 07/792,499Filed 13 Nov 1991 · division
Priority: 30 Sep 1988
Granted: 4 May 1993
Term ends: Not estimatedThe source records don’t support an estimate.

Classification4 codes

D21H 25/18
After-treatment of paper not provided for in groups D21H17/00 - D21H23/00: of old paper as in books, documents, e.g. restoring
C07C 43/11
Of polyhydroxy compounds: polyethers containing —O—n units with ≤ 2 n≤ 10
D21H
Pulp compositions
C07C
Acyclic or carbocyclic compounds

Family

Serial252,421Parent of this continuation · filed 30 Sep 1988
Serial630,721Parent of this division · filed 20 Dec 1990
US 5,104,997 AParent of this division · filed 14 Apr 1992
US 5,208,072 AThis patent

From the US filing history. Foreign family members aren’t listed.

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Abstract

(A) a substituted metal alkoxide having the formula
X.sub.y M.sup.a (OR).sub.a--y.(R.sup.1 OH).sub.x
wherein:
(I) --OR is a group selected from 2-alkoxyalkoxy- and .omega.-alkoxypolyalkoxy- groups of the formula ##STR13## wherein R.sup.2 is selected from H and --CH.sub.3 and R.sup.3 is selected from alkyl groups of 1 to 18 carbon atoms, cycloalkyl groups of 3 to 18 carbon atoms and aryl, arylalkyl and alkylaryl groups of 6 to 18 carbon atoms and n is a value of 1 to 20;
(II) X-- is a group selected from
(a) 2-dialkylaminoalkoxy- and .omega.-dialkylaminopolyalkoxy groups of the formula ##STR14## wherein R.sup.2 is selected from hydrogen and methyl, R.sup.3 is selected from alkyl groups of 1 to 18 carbon atoms, cycloalkyl groups of 3 to 18 carbon atoms and aryl, arylalkyl and alkylaryl groups of 6 to 18 carbon atoms and n is a value of 1 to 20;
(b) a halogen selected from chlorine and bromine;
(c) an organic group --R.sup.4 wherein R.sup.4 is selected from the group consisting of alkyl groups containing 1 to 18 carbon atoms, cycloalkyl groups containing 3 to 18 carbon atoms and aryl, arylalkyl and alkylaryl groups containing 6 to 18 carbon atoms;
(d) an acyloxy group of the formula [--O(O)CR.sup.4 ] wherein R.sup.4 has the hereintobefore ascribed meaning;
(e) .omega.-alkoxypolyalkoxy- groups of the formula ##STR15## wherein R.sup.2, R.sup.3 and n have the herintobefore ascribed meanings;
(f) an alkoxy group --OR.sup.4 wherein R.sup.4 has the hereintobefore ascribed meanings;
(III) M is a metal selected from groups IIa and IIb of the Periodic Table and aluminum and mixtures thereof;
(IV) R.sup.1 OH is a compound in which R.sup.1 O is a group selected from
(e) alkoxy groups of the formula R.sup.4 O wherein R.sup.4 has the hereintobefore ascribed meanings;
(f) 2-alkoxyalkoxy- and .omega.-alkoxypolyalkoxy- groups of the formula ##STR16## wherein R.sup.2, R.sup.3 and n have the hereintobefore ascribed meanings;
(g) 2-dialkylaminoalkoxy- and .omega.-dialkylaminopolyalkoxy groups of the formula ##STR17## (V) a is the valence of the metal M;
(VI) y has a value between zero and one;
and
(VII) x has a value of zero to two;
(B) a carbonated substituted metal alkoxide having the formula
X.sub.y M.sup.a (OR).sub.a--y.(R.sup.1 OH).sub.x
in which either X.sub.y or --OR is carbonated wherein R.sup.1 OH, M, a, y and x have the hereintobefore ascribed meanings;
and
(I) --OR is a group selected from 2-alkoxyalkoxy-and .omega.-alkoxypolyalkoxy- groups of the formula ##STR18## wherein R.sup.2 is selected from H and --CH.sub.3 and selected from alkyl groups of 1 to 18 carbon atoms, cycloalkyl groups of 3 to 18 carbon atoms and aryl, arylalkyl and alkylaryl groups of 6 to 18 carbon atoms and n is a value of 1 to 20;
and
(II) X-- is a group selected from
(a) 2-dialkylaminoalkoxy- and .omega.-dialkylaminopolyalkoxy groups of the formula ##STR19## #wherein R.sup.2 is selected from hydrogen and methyl, R.sup.3 is selected from alkyl groups of 1 to 18 carbon atoms, cycloalkyl groups of 3 to 18 carbon atoms and aryl, arylalkyl and alkylaryl groups of 6 to 18 carbon atoms and n is a value of 1 to 20;
(b) an .omega.-alkoxypolyalkoxy- group of the formula ##STR20## wherein R.sup.2, R.sup.3 and n have the hereintobefore ascribed meanings;
and,
(c) an alkoxy group --OR.sup.4 wherein R.sup.4 has the hereintobefore ascribed meaning
(C) and mixtures of (A) and (B).

28 more elements

Facts

Application

07/792,499Filed 13 Nov 1991 · division

Priority

30 Sep 1988

Granted

4 May 1993

Term ends

Not estimatedThe source records don’t support an estimate.

Classification4 codes

D21H 25/18
After-treatment of paper not provided for in groups D21H17/00 - D21H23/00: of old paper as in books, documents, e.g. restoring
C07C 43/11
Of polyhydroxy compounds: polyethers containing —O—n units with ≤ 2 n≤ 10
D21H
Pulp compositions
C07C
Acyclic or carbocyclic compounds