IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
UP-0782761
(2007-07-25)
|
등록번호 |
US-7838599
(2011-01-22)
|
우선권정보 |
DE-10 2006 034 893(2006-07-25) |
발명자
/ 주소 |
- Zöllner, Stephan
- Utesch, Nils
- Husemann, Marc
|
출원인 / 주소 |
|
대리인 / 주소 |
Norris McLaughlin & Marcus PA
|
인용정보 |
피인용 횟수 :
3 인용 특허 :
3 |
초록
▼
A Polyacrylate having an at least bimodal molecular weight distribution is disclosed. The polyacrylate is characterized by at least two maxima in the molar mass distribution curve, at points M1 and M2, with M1>M2, in which, viewed formally, there are at least two polymers, P1 and P2, each havin
A Polyacrylate having an at least bimodal molecular weight distribution is disclosed. The polyacrylate is characterized by at least two maxima in the molar mass distribution curve, at points M1 and M2, with M1>M2, in which, viewed formally, there are at least two polymers, P1 and P2, each having its own molecular weight distribution, the polymer P1 possessing a most frequent molar mass Mmax(P1) and the polymer P2 possessing a most frequent molar mass Mmax(P2), where Mmax(P1)>Mmax(P2), at least the polymer P1 being based on a monomer mixture comprising at least one monomer type selected from the group of the acrylic esters and of the methacrylic esters of the general formula H2C═CR1—COOR2 where R1═H or CH3 and where R2 represents an aliphatic hydrocarbon chain having 4 to 15 carbon atoms; and at least one olefinically unsaturated monomer type containing functional groups, wherein the functional groups of the at least one olefinically unsaturated monomer type are groups which are able to react for a thermal crosslinking reaction, and at least the polymer P1 has copolymerized monomers of the olefinically unsaturated monomer type containing groups that are reactive for a thermal crosslinking reaction, and is capable under the influence of thermal energy, where appropriate with addition of a catalyst, of entering into a crosslinking reaction.
대표청구항
▼
The invention claimed is: 1. Polyacrylate having an at least bimodal molecular weight distribution, characterized by at least two maxima in the molar mass distribution curve, at points M1 and M2, with M1>M2, in which there are at least two polymers, P1 and P2, each having their own molecular w
The invention claimed is: 1. Polyacrylate having an at least bimodal molecular weight distribution, characterized by at least two maxima in the molar mass distribution curve, at points M1 and M2, with M1>M2, in which there are at least two polymers, P1 and P2, each having their own molecular weight distribution, the polymer P1 having a weight-average molecular weight in the range of from about 800,000 g/mol to 2,000,000 g/mol, and a polydispersity of between 4 to 15 and possessing a most frequent molar mass Mmax(P1) and the polymer P2 having a weight-average molecular weight in the range of from about 50,000 g/mol to 250,000 g/mol, and a polydispersity of between 1.3 to 10 and possessing a most frequent molar mass Mmax(P2), where Mmax(P1)>Mmax(P2), at least the polymer P1 being based on a monomer mixture comprising (a) at least one monomer type selected from the group of the acrylic esters and of the methacrylic esters of the general formula H2C═CR1—COOR2 where R1═H or CH3 and where R2 represents an aliphatic hydrocarbon chain having 4 to 15 carbon atoms; (b) at least one olefinically unsaturated monomer type containing functional group able to react for a thermal crosslinking reaction, said functional groups selected from the group consisting of hydroxyl, epoxy, amide and isocyanate, and at least the polymer P1 has copolymerized monomers of the olefinically unsaturated monomer type containing groups that are reactive for a thermal crosslinking reaction, and is capable under the influence of thermal energy of entering into a crosslinking reaction. 2. Polyacrylate according to claim 1, wherein polymers P1 and P2 are both based on a monomer mixture of the stated composition. 3. Polyacrylate according to claim 1 wherein the reactive groups are able to react with themselves. 4. Polyacrylate according to claim 1 wherein the monomer type (b) is glycidyl methacrylate. 5. Polyacrylate according to claim 1 wherein there are at least two olefinically unsaturated monomer types, (b1) and (b2), containing groups that are reactive for a thermal crosslinking reaction, the reactive groups of one monomer type (b1) being capable, under thermal activation, of reacting with the reactive groups of the second monomer type (b2). 6. Polyacrylate according to claim 1 wherein at least one tackifying resin has been admixed with a weight fraction of 0%-50% by weight, based on the polyacrylate.
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