Patent ID: 11859043
Assignee: MOMENTIVE PERFORMANCE MATERIALS INC.
Field: Macromolecular chemistry, polymers (Chemistry)
Classification: CPC C  B | IPC B  C

Claim 13:
14. A process for the preparation of silylated polyurethane polymer (i) from the reaction of polyol (ii) and/or hydroxyl-terminated polyurethane prepolymer (iii) with isocyanatosilane silylating agent (iv), or the reaction of polyisocyanate (v) and/or isocyanate-terminated polyurethane prepolymer (vi) with active hydrogen-containing silylating agent (vii), the process comprising:
employing at least one yttrium-containing catalyst (viii) for the preparation of the hydroxyl-terminated polyurethane prepolymer (iii), isocyanate-terminated polyurethane prepolymer (vi) and/or silylated polyurethane polymer (i).