Claims
- 1. A random copolymer in free acid or salt form having the following formula ##STR7## in which M is a polysiloxane or a residue of a hydrophobic polyalkylene glycol having the formula ##STR8## wherein wherein Y is hydrogen, an alkali or alkaline earth metal ion, ferrous ion, aluminum ion, (alkanol)ammonium ion or (alkyl)ammonium ion,
- R is a C.sub.2-6 alkylene radical,
- R.sub.1 is a C.sub.1-20 alkyl, C.sub.6-9 cycloalkyl or phenyl group,
- R.sub.2 is hydrogen or R.sub.1,
- x, y and z are numbers from 1 to 100,
- m is a number from 1 to 100,
- n is a number from 10 to 100,
- p, q and r are numbers from 0-100, provided that at least one of p, q and r is at least 1 and that q>p+r provided that
- i) the ratio of x to (y+z) is from 1:10 to 10:1 inclusive,
- ii) the ratio of z:y is from 5:1 to 100:1, and
- iii) m+n=15-100, and
- iv) M is different from --(R--O).sub.m --R.sub.1.
- 2. A random copolymer according to claim 1 wherein M is a hydrophobic polyalkylene of formula II and R is --CH.sub.2 --CH.sub.2 --.
- 3. A random copolymer according to claim 1 wherein M is the residue of polysiloxane of the formula ##STR9## wherein R.sub.2 is hydrogen, a C.sub.1-20 alkyl, a C.sub.6-9 cycloalkyl or a phenyl group and q is a number from 1-100.
- 4. A process for the preparation of a copolymer according to claim 1 comprising reacting a random copolymer of the following formula ##STR10## with a compound of Formula IV
- R.sub.1 --O--(--R--O).sub.m --H (IV)
- as well as with a compound of Formula II ##STR11## or Formula III ##STR12## wherein R.sub.1 and R are defined in claim 1; R.sub.2 is hydrogen or R.sub.1 ; and p, q and r are numbers from 0-100, provided that at least one of p, q and r is at least 1 and that q>p+r in the appropriate amounts and optionally, forming a salt by reacting the resulting copolymer with an alkali or alkaline earth base, with ferrous or aluminum salts or with ammonia or with an alkylamino or alkanolamino compound.
- 5. A process for improving the fluidity of cementitious mixes comprising a hydraulic binder, aggregate and water, which process comprises the step of adding to the cementitious mix a random copolymer in free acid or salt form having the following formula ##STR13## in which M is a residue of a hydrophobic polyalkylene glycol or polysiloxane,
- wherein Y is hydrogen, an alkali or alkaline earth metal ion, ferrous ion, aluminum ion, (alkanol)ammonium ion or (alkyl)ammonium ion,
- R is a C.sub.2-6 alkylene radical,
- R.sub.1 is a C.sub.1-20 alkyl, C.sub.6-9 cycloalkyl or phenyl group,
- x, y and z are numbers from 1 to 100,
- m is a number from 1 to 100,
- n is a number from 10 to 100,
- provided that
- i) the ratio of x to (y+z) is from 1:10 to 10:1 inclusive,
- ii) the ratio of z :y is from 5:1 to 100:1,
- iii) m+n=15-100, and
- iv) M is different from (R--O).sub.m --R.sub.1.
- 6. The process of claim 5 in which the ratio of x to (y+z) is from 1:3 to 3:1.
- 7. The process of claim 5 wherein R is an ethylene group, R.sub.1 is methyl, the ratio of x to (y+z) is 1:1, m is a number of from 11-12 and n is a number from 18-25.
- 8. The process of claim 5 wherein the random copolymer has a weight-average molecular weight of from 5,000 to 100,000.
- 9. The process of claim 5 wherein M is the residue of a hydrophobic polyalkylene glycol.
- 10. The process of claim 5 wherein M is the residue of a copolymer consisting of units derived from ethylene oxide and propylene oxide having the formula ##STR14## in which R.sub.2 is hydrogen, a C.sub.1-20 alkyl, C.sub.6-9 cycloalkyl or phenyl group; p, q and r are numbers from 0 to 100 with the provisos that at least one of p,q, and r is at least 1, and that q>p+r.
- 11. The process of claim 10 wherein R is --CH.sub.2 --CH.sub.2 --.
- 12. The process of claim 5 wherein M is the residue of polysiloxane of the formula ##STR15## wherein R.sub.2 is hydrogen, a C.sub.1-20 alkyl, a C.sub.6-9 cycloalkyl or a phenyl group and q is a number from 1-100.
- 13. The process of claim 5 wherein M is the residue of a polypropylene glycol having from 10 to 200 units derived from propylene.
- 14. A cementitious mix comprising a cementitious product and a random copolymer in free acid or salt form having the following formula ##STR16## in which M is a residue of a hydrophobic polyalkylene glycol or polysiloxane,
- wherein Y is hydrogen, an alkali or alkaline earth metal ion, ferrous ion, aluminum ion, (alkanol)ammonium ion or (alkyl)ammonium ion,
- R is a C.sub.2-6 alkylene radical,
- R.sub.1 is a C.sub.1-20 alkyl, C.sub.6-9 cycloalkyl or phenyl group,
- x, y and z are numbers from 1 to 100,
- m is a number from 1 to 100,
- n is a number from 10 to 100,
- provided that
- i) the ratio of x to (y+z) is from 1:10 to 10:1 inclusive,
- ii) the ratio of z:y is from f:1 to 100:1, and
- iii) m+n=15-10, and
- iv) M is different from (R--O).sub.m --R.sub.1.
- 15. A cementitious mix according to claim 14 wherein M is the residue of a hydrophobic polyalkylene glycol.
- 16. A cementitious mix according to claim 15 wherein M is the residue of a copolymer consisting of units derived from ethylene oxide and propylene oxide having the formula ##STR17## in which R.sub.2 is hydrogen, a C.sub.1-20 alkyl, C.sub.6-9 cycloalkyl or phenyl group; p, q and r are numbers from 0 to 100 with the provisos that at least one of p,q, and r is at least 1, and that q>p+r.
- 17. A cementitious mix according to claim 16 wherein R is --CH.sub.2 --CH.sub.2 --.
- 18. A cementitious mix according to claim 14 wherein M is the residue of polysiloxane of the formula ##STR18## wherein R.sub.2 is hydrogen, a C.sub.1-20 alkyl, a C.sub.6-9 cycloalkyl or a phenyl group and q is a number from 1-100.
- 19. A cementitious mix according to claim 14 wherein M is the residue of a polypropylene glycol having from 10 to 200 units derived from popylene oxide.
- 20. A cementitious mix according to claim 14 wherein the random copolymer has an average molecular weight of from 10,000 to 30,000.
- 21. A cementitious mix according to claim 14 wherein the random copolymer is present in an amount from about 0.01 to 10% by weight based on the weight of the cement.
- 22. A cementitious mix according to claim 14 wherein the random copolymer is present in an amount from about 0.1 to 3% by weight based on the weight of the cement.
Priority Claims (1)
Number |
Date |
Country |
Kind |
40 42 182.1 |
Dec 1990 |
DEX |
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Parent Case Info
This is a continuation of application Ser. No. 08/272,709, filed Jul. 8, 1994, which in turn is a continuation-in-part of application Ser. No. 08/108,961, filed Aug. 18, 1993, which in turn is a continuation of application Ser. No. 07/814,020, filed Dec. 26, 1991, all now abandoned.
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Continuations (2)
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Parent |
272709 |
Jul 1994 |
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Parent |
814020 |
Dec 1991 |
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Continuation in Parts (1)
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108961 |
Aug 1993 |
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