Dow Silicones Corporation

Dow (shanghai) Holding Co., Ltd

Dow Corning Toray Company, Ltd.

Dow Global Technolgoies LLC

Chung Mien Kuo

Yu Chen

Yang Wayne Wang

Fuming Huang

Li Ding

Zhihua Liu

Seiji Hori

Takateru Yamada

Wenjie Chen

Xiaomei Song

Guodong Shen

Johnny Yan Zhou

Jo Gunn

Bruce Fuming Huang

Hongyu Cheng

A silicone release coating composition comprises:

Silicone release coating composition and low release force emulsion silicone release coating for films and papers having cured release coating

Disclosed is an emulsion type silicone pressure sensitive adhesive composition and a process for the production thereof. Also provided is an emulsion type silicone pressure sensitive adhesive composition, comprising: (A) 100 parts by weight of a silicone pressure sensitive adhesive; (B) 1-30 parts by weight of an emulsifier selected from the group consisting of a polyvinylalcohol and a polyether modified MQ resin wherein M is R 3SiO 1/2, and Q is SiO 4/2, wherein R represents C 1-20 alkyl; (C) water; and (D) catalyst.

Emulsion type silicone pressure sensitive adhesive composition and process for the production thereof

This invention relates to solventless release coating organopolysiloxane composition and sheet-form substrate having cured release coating, providing a solventless release coating organopolysiloxane composition having a viscosity of 50 to 3,000 mPa s, comprising (A) 100 parts of an organopolysiloxane fluid having a viscosity at 25&#xb0; C. of 10 to 1,000 mPa s and alkenyl content of 0.10 to 3.0 wt %; (B) 0.5 to 15 parts of a diorganopolysiloxane having a viscosity at 25&#xb0; C. of 10,000 to 150,000 mPa s, and 0.05 to 0.30% of alkenyl groups at the pendant position of its siloxane-chain and trialkylsiloxy-terminals; (C) a prescribed quantity of an organohydrogenpolysiloxane; and (D) a hydrosilylation reaction catalyst. Also, a cured release coating-bearing sheet-form substrate that has a cured coating from this solventless release coating organopolysiloxane composition is provided.

Solventless release coating organopolysiloxane composition and sheet-form substrate having cured release coating

A silicone emulsion comprises: (A) a silicone compound comprising an anchorage additive for enhancing the adhesion to a polymer film substrate; (B) at least one surfactant; and (C) water. The anchorage additive is the reaction product of (A1) a fluid polyorganosiloxane containing at least one alkenyl group and at least one silanol group with (A2) a hydrolysable silane containing at least one epoxide group. A water-based anchorage additive comprises the silicone emulsion. A silicone release coating composition comprises: (X1) the silicone emulsion; and (X2) at least one curable silicone composition, e.g. a water-based silicone release coating composition. The curable silicone release coating composition may be applied to a sheet-form substrate and cured to form a release-coated layer having good release property and improved rub-off resistance on the substrate.

Anchorage additive emulsion for silicone release coating composition

To provide a release modifier which provides a heavy release force to a cured release layer of silicone coating composition. The release modifier comprises an organopolysiloxane resin-organopolysiloxane condensation reaction product that is obtained by the condensation reaction of (a1) 100 weight parts of MQ-type organopolysiloxane resin in which the molar ratio of the M unit to the Q unit is 0.6 to 1.0 and the content of the hydroxyl group or alkoxy group is 0.3 to 2.0 weight % with (a2) 20 to 150 weight parts of chain-form diorganopolysiloxane that has an average degree of polymerization of 100 to 1000 and at least one hydroxyl group or alkoxy group; this organopolysiloxane resin-organopolysiloxane condensation reaction product preferably has a prescribed hydroxyl group content.

Release modifier and release coating organopolysiloxane composition

Growing community of inventors

Chung Li, Taiwan

Chung Mien Kuo