Invention Grant
- Patent Title: Hot-melt pressure-sensitive adhesive composition based on polyurethane/(meth)acrylic
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Application No.: US16905976Application Date: 2020-06-19
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Publication No.: US11873429B2Publication Date: 2024-01-16
- Inventor: Guillaume Michaud , Aurelien Wiegand , Stephane Fouquay
- Applicant: BOSTIK SA
- Applicant Address: FR Colombes
- Assignee: Bostik SA
- Current Assignee: Bostik SA
- Current Assignee Address: FR Colombes
- Agency: NK Patent Law
- Priority: FR 07003 2019.06.27
- Main IPC: C09J7/38
- IPC: C09J7/38 ; B05D3/06 ; B05D5/10 ; C09J175/12 ; C08K5/105 ; C08K5/01 ; C09J7/35 ; C09J175/08 ; C08K5/00 ; C09J175/16
Abstract:
A hot-melt pressure-sensitive adhesive composition comprises:
a) at least one polyurethane comprising at least two end functional groups T of following formula (I):
—X—(C═O)—CH(RV)═CH2 (I)
b) at least one tackifying resin chosen from the following resins:
(b1) terpene/phenolic resins;
(b2) the resins resulting from the polymerization of α-methylstyrene, optionally followed by a reaction with at least one phenol;
(b3) the polymeric resins (optionally at least partially hydrogenated) resulting from mainly C9 aromatic fractions; and
c) at least one polymerization inhibitor.
The polyurethane(s) (a): tackifying resin(s) (b) ratio by weight ranges from 4:6 to 6:4. The said polyurethane (a) has a mean functionality of functional groups of formula (I) strictly of greater than 1.9.
a) at least one polyurethane comprising at least two end functional groups T of following formula (I):
—X—(C═O)—CH(RV)═CH2 (I)
b) at least one tackifying resin chosen from the following resins:
(b1) terpene/phenolic resins;
(b2) the resins resulting from the polymerization of α-methylstyrene, optionally followed by a reaction with at least one phenol;
(b3) the polymeric resins (optionally at least partially hydrogenated) resulting from mainly C9 aromatic fractions; and
c) at least one polymerization inhibitor.
The polyurethane(s) (a): tackifying resin(s) (b) ratio by weight ranges from 4:6 to 6:4. The said polyurethane (a) has a mean functionality of functional groups of formula (I) strictly of greater than 1.9.
Information query
IPC分类:
