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특허 상세정보

Bimodal acrylate pressure-sensitive adhesive compounds

국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판) C08F-008/00   
미국특허분류(USC) 525/191; 526/317.1; 525/222
출원번호 UP-0539865 (2003-11-24)
등록번호 US-7723436 (2010-06-14)
우선권정보 DE-102 59 458(2002-12-19)
국제출원번호 PCT/EP2003/013167 (2003-11-24)
§371/§102 date 20051130 (20051130)
국제공개번호 WO04/056884 (2004-07-08)
발명자 / 주소
출원인 / 주소
대리인 / 주소
    Norris McLaughlin & Marcus PA
인용정보 피인용 횟수 : 0  인용 특허 : 13
초록

The invention relates to a polyacrylate which as a result of a polymerization process has a broad, bimodal molecular weight distribution. These acrylate pressure-sensitive adhesives are preferably processed from the melt. The low molecular weight fraction lowers the flow viscosity, while the high molecular weight fraction results in the achievement of a high shear strength, following appropriate crosslinking, for the acrylate pressure-sensitive adhesive.

대표
청구항

We claim: 1. A process for preparing a polyacrylate having an at least bimodal molecular weight distribution, which comprises polymerizing a monomer mixture of a1) 70% to 100% by weight acrylic acid and/or acrylic esters of the formula CH2═C(R′)(COOR2), where R′═H or CH3 and R2 is an alkyl chain having 1 to 20 carbon atoms, and a2) 0 to 30% by weight olefinically unsaturated monomers containing functional groups, in an at least two-phase free-radical solvent polymerization in the presence of an organic solvent or in mixtures ...

이 특허에 인용된 특허 (13)

  1. Kotnour Thomas A. (Cottage Grove MN) Barber Ronald L. (Oakdale MN) Krueger Walter L. (St. Paul MN). Acrylate pressure-sensitive adhesives containing insolubles. USP1989064843134.
  2. Wendel Kurt,DEX ; Schwerzel Thomas,DEX ; Hirsch Guenter,DEX. Aqueous polymer dispersions. USP2000066080813.
  3. Wendel Kurt,DEX ; Schwerzel Thomas,DEX ; Hirsch Guenter,DEX. Aqueous polymer dispersions. USP1998015705563.
  4. Brahm Martin,DEX ; Margotte Dieter,DEX ; Wamprecht Christian,DEX ; Hovestadt Wieland,DEX ; Meixner Jurgen,DEX. Binder mixtures for two-component polyurethane coating compositions. USP1999126001931.
  5. McGrath James E. (Blacksburg VA) DePorter Craig D. (Blacksburg VA) Long Timothy E. (Rochester NY). Block polymers of methacrylates. USP1992035098959.
  6. Kotnour Thomas A. (Cottage Grove MN) Barber Ronald L. (Oakdale MN) Krueger Walter L. (St. Paul MN). Continuous free radial polymerization in a wiped-surface reactor. USP1986104619979.
  7. Baus Richard E. (Warminster PA) Swift Graham (Blue Bell PA). Emulsion polymer of heterogeneous molecular weight and preparation thereof. USP1985024501845.
  8. Kale Lawrence T. ; Jain Pradeep ; Kelley David C. ; Parikh Deepak R. ; Baker Sharon L. ; McKinney Osborne K.. Extrusion compositions having high drawdown and substantially reduced neck-in. USP1998065773155.
  9. Kale Lawrence T. ; Jain Pradeep ; Kelley David C. ; Parikh Deepak R. ; Baker Sharon L. ; McKinney Osborne K.. Extrusion compositions having high drawdown and substantially reduced neck-in. USP1999015863665.
  10. Husemann, Marc; Zollner, Stephan. Pressure sensitive adhesive, particularly for apolar surfaces. USP2003116652963.
  11. Williams Jeffrey D. (Washington DC) Young Marvin L. (Rockville MD) Ahmad Syed S. (Lanham MD) Ransohoff Jackson A. (Bethesda MD). Pressure-sensitive adhesives. USP1989034810523.
  12. Wildburg Gerald,DEX ; Wustefeld Renate,DEX ; Sack Heinrich,DEX ; Fickeisen Peter,DEX. Pulverulent adhesive. USP2000076084018.
  13. Dollase, Thilo; Husemann, Marc; Lühmann, Bernd. Strippable systems based on acrylic block copolymers. USP2004046723407.