IPC분류정보
| 국가/구분 |
United States(US) Patent
등록
|
| 국제특허분류(IPC7판) |
|
| 출원번호 |
US-0812854
(2008-12-08)
|
| 등록번호 |
US-8353983
(2013-01-15)
|
| 우선권정보 |
JP-2008-016559 (2008-01-28) |
| 국제출원번호 |
PCT/EP2008/067001
(2008-12-08)
|
| §371/§102 date |
20101012
(20101012)
|
| 국제공개번호 |
WO2009/095131
(2009-08-06)
|
|
발명자
/ 주소 |
- Sugiyama, Tomomi
- Sugamata, Takumi
|
| 출원인 / 주소 |
- Construction Research & Technology GmbH
|
| 인용정보 |
피인용 횟수 :
0 인용 특허 :
44 |
초록
▼
To provide shrinkage reducing agents which render excellent shrinkage reducing effect and frost-thaw resistance to cement compositions such as mortar and concrete without entraining excessive air, and exhibit excellent solution stability. The shrinkage reducing agent comprises a (poly)alkylene compo
To provide shrinkage reducing agents which render excellent shrinkage reducing effect and frost-thaw resistance to cement compositions such as mortar and concrete without entraining excessive air, and exhibit excellent solution stability. The shrinkage reducing agent comprises a (poly)alkylene compound having an unsaturated bond represented by the formula (1): R2O—R1—O-(A1O)n—R3 (1)-(A2O)m—R4 (2) (wherein R1 is a C2-10 hydrocarbon group having an unsaturated bond; R2 is hydrogen or the formula (2); R3 and R4 are each independently hydrogen or a C1-8 alkyl group; A1O and A2O are one or more kinds of C2-4 oxyalkylene groups; and n and m are mean addition numbers of moles of A1O and A2O, respectively, and 1 to 20).
대표청구항
▼
1. A shrinkage reducing agent comprising a (poly)alkylene compound having an unsaturated bond represented by the formula (1): R2O—R1—O-(A1O)n—R3 (1) wherein R1 is a C2-10 hydrocarbon group having an unsaturated bond; R2 is hydrogen; R3 is hydrogen or a C1-8 alkyl group; A1O is one or more kinds of
1. A shrinkage reducing agent comprising a (poly)alkylene compound having an unsaturated bond represented by the formula (1): R2O—R1—O-(A1O)n—R3 (1) wherein R1 is a C2-10 hydrocarbon group having an unsaturated bond; R2 is hydrogen; R3 is hydrogen or a C1-8 alkyl group; A1O is one or more kinds of C2-4 oxyalkylene groups; and n is the mean addition numbers of moles of A1O, and 1 to 20. 2. The shrinkage reducing agent according to claim 1, wherein the unsaturated bond of R1 is a triple bond. 3. The shrinkage reducing agent according to claim 1, wherein R1 is a butyne group. 4. The shrinkage reducing agent according to claim 1, comprising additional one or more kinds of shrinkage reducing agents represented by the formula (3): Q1-O—(B1O)r-Q2 (3) wherein Q1 is a C1-9 alkyl group or a C1-9 alkenyl group; Q2 is hydrogen or a C1-8 alkyl group; B1O is one or more kinds of C2-4 oxyalkylene groups: and r is a mean addition number of moles of B1O and 1 to 12. 5. A cement additive comprising one or more kinds of the shrinkage reducing agents according to claim 4 and a cement dispersant. 6. The cement additive according to claim 5, wherein the cement dispersant is one or more kinds of dispersants selected from the group consisting of lignin-based, melamine-based, naphthalene-based, oxycarboxylic acid-based and polycarboxylic acid-based dispersants. 7. The cement additive according to claim 5, wherein the cement dispersant is based on polycarboxylic acid. 8. The cement additive according to claim 6, wherein the polycarboxylic acid-based cement dispersant is an ester-based polycarboxylic acid copolymer comprising, as constituting units, a monomer 1 represented by the formula (4) and a copolymerizable unsaturated carboxylic acid monomer, and/or an ether-based polycarboxylic acid copolymer comprising, as constituting units, a monomer 2 represented by the formula (5) and the same or a different copolymerizable unsaturated carboxylic acid monomer: R5-(A3O)s—R6 (4) wherein R5 is a residue of unsaturated monocarboxylic acid or unsaturated dicarboxylic acid, represented by the formula (4a) wherein, R6, R7 and R9 are each independently hydrogen or a methyl group; R8 is hydrogen, a methyl group or COOM; M is hydrogen, alkaline metal, alkaline earth metal or (A4O)l—R10; A3O and A4O are one or more kinds of C2-4 oxyalkylene groups; R10 is hydrogen or a methyl group, s and 1 are mean addition numbers of moles of A3O and A4O, respectively, and 1 to 100; R11-(A5O)t—R12 (5) wherein R11 is a residue of unsaturated alcohol represented by the formula (5a); wherein, R12, R13, R14 and R15 are each independently hydrogen or a methyl group: A5O is one or more kinds of C2-4 oxyalkylene groups; u is an integer of 0 to 2; and t is a mean addition number of moles of (A5O) and 1 to 100. 9. A method of adding a cement admixture to a cement composition comprising adding to the cement composition a (poly)alkylene compound having an unsaturated bond represented by the formula (1) as a shrinkage reducing agent: R2O—R1—O-(A1O)n—R3 (1) wherein R1 is a C2-10 hydrocarbon group having an unsaturated bond; R2 is hydrogen; R3 is hydrogen or a C1-8 alkyl group; A1O is one or more kinds of C2-4 oxyalkylene groups; and n is the mean addition numbers of moles of A1O, and 1 to 20. 10. The method according to claim 9, wherein the unsaturated bond of R1 is a triple bond. 11. The method according to claim 9, wherein R1 is a butyne group. 12. The cement additive comprising one or more kinds of the shrinkage reducing agents according to claim 1 and a cement dispersant. 13. The cement additive according to claim 12, wherein the cement dispersant is one or more kinds of dispersants selected from the group consisting of lignin-based, melamine-based, naphthalene-based, oxycarboxylic acid-based and polycarboxylic acid-based dispersants. 14. The cement additive according to claim 12, wherein the cement dispersant is based on polycarboxylic acid. 15. The cement additive according to claim 13, wherein the polycarboxylic acid-based cement dispersant is an ester-based polycarboxylic acid copolymer comprising, as constituting units, a monomer 1 represented by the formula (4) and a copolymerizable unsaturated carboxylic acid monomer, and/or an ether-based polycarboxylic acid copolymer comprising, as constituting units, a monomer 2 represented by the formula (5) and the same or a different copolymerizable unsaturated carboxylic acid monomer: R5-(A3O)s—R6 (4) wherein R5 is a residue of unsaturated monocarboxylic acid or unsaturated dicarboxylic acid, represented by the formula (4a) wherein, R6, R7 and R9 are each independently hydrogen or a methyl group; R8 is hydrogen, a methyl group or COOM; M is hydrogen, alkaline metal, alkaline earth metal or (A4O)l—R10; A3O and A4O are one or more kinds of C2-4 oxyalkylene groups: R10 is hydrogen or a methyl group, s and l are mean addition numbers of moles of A3O and A4O, respectively, and 1 to 100; R11-(A5O)l—R12 (5) wherein R11 is a residue of unsaturated alcohol represented by the formula (5a); wherein, R12, R13, R14 and R15 are each independently hydrogen or a methyl group; A5O is one or more kinds of C2-4 oxyalkylene groups; u is an integer of 0 to 2; and t is a mean addition number of moles of (A5O) and 1 to 100.
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