Notice of Pre-AIA or AIA Status
The present application, filed on or after March 16, 2013, is being examined under the first inventor to file provisions of the AIA .
Claim Rejections - 35 USC § 103
The following is a quotation of 35 U.S.C. 103 which forms the basis for all obviousness rejections set forth in this Office action:
A patent for a claimed invention may not be obtained, notwithstanding that the claimed invention is not identically disclosed as set forth in section 102, if the differences between the claimed invention and the prior art are such that the claimed invention as a whole would have been obvious before the effective filing date of the claimed invention to a person having ordinary skill in the art to which the claimed invention pertains. Patentability shall not be negated by the manner in which the invention was made.
Claims 1-9 are rejected under 35 U.S.C. 103 as being unpatentable over U.S. Patent Pub. No. 2015/0159064 to Roock et al. in view of JP-2010-59362 to Sasano et al.
As to claims 1-9, Roock discloses a solventless (See Example) two-component structural polyurethane adhesive comprising an isocyanate component comprising an NCO-terminated prepolymer prepared from diphenylmethane diisocyanates that contain carbodiimide groups for good workability properties and high strengths (0057-0058) and from 50 to 95% by weight of an NCO-terminated polyurethane polymer derived from 4,4-MDI and polymeric polyols (0058-0060) that is reacted with a polyol component comprising mixtures of high molecular weight polyols and low molecular weight diols such as 1,4-butanediol or 1,2-ethanediol (Table 1).
Roock does not expressly disclose a polyol component containing a urethane polyol.
However, within the same field of endeavor, Sasano discloses a two-component polyurethane adhesive comprising an NCO-terminated isocyanate component and a polyol component containing 10-20% by weight of a polyurethane polyol having an hydroxy equivalent weight derived from a diol and a diisocyanate, preferably xylylene diisocyanate (0005-0006, 0024-0027, Examples).
At the time of filing it would have been obvious to a person of ordinary skill in the art to add the urethane polyol taught in Sasano to the polyol portion of Roock to improve adhesive strength even under severe storage conditions and provide excellent alkali resistance (0005)
Conclusion
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/MICHAEL L LEONARD/Primary Examiner, Art Unit 1763
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